Jing Ma

Jing Ma
North China Electric Power University | NCEPU · School of Electrical and Electronic Engineering

Ph. D.

About

125
Publications
6,360
Reads
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1,435
Citations
Citations since 2017
30 Research Items
954 Citations
2017201820192020202120222023050100150
2017201820192020202120222023050100150
2017201820192020202120222023050100150
2017201820192020202120222023050100150
Introduction
Skills and Expertise
Additional affiliations
April 2008 - December 2015
North China Electric Power University
Position
  • Professor (Associate)

Publications

Publications (125)
Article
This paper addresses the problem that grid-connected doubly-fed induction generators (DFIG) with virtual inertia control cannot simultaneously take into account both rotor angle stability and system frequency regulation. Based on the dynamic energy curvature, a method of suppressing low frequency oscillation that considers the effect of frequency r...
Article
When the LCC-HVDC transmission system restarts at fault, the high restart DC pulsed current will deliver a second impact on the system, causing the transient power angles of rectifier-side generators to swing. In order to solve this problem, a method for the optimization of fault transient operation characteristics of the AC/DC system based on the...
Article
In LCC-HVDC system, existing DC line protection methods have poor immunity to the fault resistance in internal fault cases, and easily mal-operate in external fault cases. In view of this problem, a new pilot directional protection scheme for HVDC lines based on grounding resistance is proposed. First, the impedance characteristic equations of the...
Article
Full-text available
Concerning the difficulty in determining the restart strategy for AC/DC interconnected systems, this paper proposes a method of calculating the optimal restart strategy for AC/DC interconnected systems based on dynamic energy. First, a dynamic energy function that characterises the stability of system is constructed. Then, the analytical expression...
Article
Full-text available
Currently available research on the oscillatory stability of doubly‐fed induction generator (DFIG) integrated power system can hardly depict the dynamic characteristics of DFIGs with inertia support capability. The dynamic energy stability region of DFIG‐integrated power system with virtual inertia is constructed in this paper. First, a dynamic mod...
Article
Full-text available
A new transient stability control strategy for the Line‐Commutated‐Converter based High‐Voltage‐Direct‐Current (LCC‐HVDC) receiving‐end system based on the gradient of dynamic energy is proposed to deal with this problem. Firstly, in the whole process from fault occurrence to fault removal, a dynamic energy function representing the stability of th...
Article
HVDC restart failure can cause the DC power interruption, which may further result in the transient power angle of the rectifier-side AC system to go unstable. Concerning this problem, a transient stability analysis method considering dynamic changes of converter topologies during the whole process of the DC restart failure is proposed. First, dyna...
Article
China's railway has been experiencing rapid growth recently. The achievement of solar energy for the increasing electricity consumption in the rail sector attracts significant attentions. In this paper, the available solar energy on the covered land and trackside land in the rail itself is assessed for further utilization. The development of the ra...
Article
In view of the mal-operation of AC line distance protection due to DC commutation failure caused by the inverter-side AC system fault, a new AC line distance protection principle for AC/DC hybrid system based on fault component energy equation is proposed. First, by comparing the pre-fault and post-fault conducting states of converter valves, the e...
Article
The integral link of current loop PI controller of grid-tied converter and the line inductance form the intrinsic dq frame sub- and super-synchronous resonant points. This paper studies the mechanism of simultaneous instability of dq frame sub- and super-synchronous oscillations (SSO/SPO) by analyzing the interaction energy corresponding to the SSO...
Article
In grid-tied type-4 wind turbine generator (WTG) system, the frequency of sub/super-synchronous oscillation varies in a wide range, making it difficult to suppress the oscillation. In view of this problem, an active damping control strategy based on energy feedback is proposed. First, the energy balance equation of stored energy, dissipation energy...
Article
Concerning the difficulty in predicting commutation failure in HVDC transmission system, a commutation failure prediction method based on the energy accumulation characteristic of 12-pulse inverter is proposed. First, the operation characteristic of valve-side current in the commutation process is analyzed. And then, according to the characteristic...
Article
Full-text available
Abstract Concerning the poor immunity of DC line protection to fault resistance in the case of internal fault and its mal‐operation proneness in the case of external fault, a new pilot directional protection scheme for HVDC line in AC/DC hybrid system based on the polarity of inductive energy is proposed. First, by analysing the conducting state of...
Article
In this paper, a new AC line pilot protection scheme for AC/DC hybrid system based on composite-mode model is proposed. First, taking commutation failure into consideration, 1-mode and 2-mode equivalent instantaneous models of inverter in different operating conditions are built. Second, according to the equivalent instantaneous inductances of inve...
Article
Concerning the difficulty in unified modeling of direct-drive wind farm with virtual inertia and the unknown cause of low frequency oscillation, a detailed model of integrated dissipation energy of direct-drive wind farm is built. First, the integrated dissipation energy model of direct-drive wind farm containing virtual inertia and PLL is built. O...
Article
For DC line protection in AC/DC hybrid system, concerning its poor immunity to fault resistance in the case of inzone fault and mal-operation problem in the case of out-of-zone fault, a new pilot directional protection scheme based on the voltage difference between positive and negative poles is proposed. First, by analyzing the operating condition...
Article
Complex dynamic interaction between type-4 wind turbine generator (WTG) and ac grid causes sub-synchronous oscillation (SSO). In view of this problem, this paper proposes a stability analysis method based on interaction energy that can explicitly reveal how (positively or negatively) and to which degree the various interaction links between subsyst...
Article
Concerning sub-synchronous oscillation caused by the integration of DFIG to power grid via series compensation line, an active damping control strategy based on remodeling of multiple energy branches in DFIG is proposed. First, according to the flow path of oscillation components, DFIG energy branches are divided. Second, potential energy and dissi...
Article
In view of the complex correlation between Doubly Fed Induction Generator (DFIG) internal components and control links which makes it difficult to locate the oscillating source in the equipment level, a DFIG equipment-level oscillating source locating method based on dynamic energy flow is proposed. Firstly, the energy correlation topology network...
Article
Concerning the variation of power system operating condition caused by time-varying factors such as wind generator output power fluctuation and load change, an adaptive control strategy for time-varying power system based on continuous Markov model is proposed in this paper. First, the Lyapunov functional containing the continuous Markov time-varyi...
Article
In view of the low reliability of traditional protection in the distribution network caused by the massive integration of DGs (distributed generation), an adaptive directional current protection scheme based on fault steady-state component is proposed in this paper. First, by analyzing the fault transient characteristics and fault equalization meth...
Article
Concerning multi-source oscillation scenes, an oscillation centre identification method based on the variation trend of bus frequency is proposed. First, according to the amplitude and phase relationship between voltage and current at any point in the system, the functional expression of the frequency of voltage and current is derived. Then, the va...
Article
When fault occurs in the grid, the short circuit characteristics of doubly-fed induction generator (DFIG) are more complicated due to the coupling influence of generator electromagnetic transient and converter regulation. In view of this problem, a DFIG stator/rotor short circuit current calculation method considering the transient regulation of bo...
Article
In view of frequent multi-machine power system oscillations in power grid which may cause traditional oscillation blocking and re-opening schemes to be completely invalid, a distance protection oscillation blocking and re-opening scheme in multi-machine power system oscillation scenes is proposed in this paper. First, the ride-through trajectory of...
Article
In view of the sensitivity and selectivity problems in DFIG (doubly-fed induction generator) wind farm collector line protection, a new adaptive distance protection scheme is proposed. First, according to the geometric distribution characteristics of the collector line voltage and current, the equation of voltage drop from the relaying point to the...
Article
In view of the incorrect operation of local protection caused by multiple distributed generations (DGs) and branches in distribution system, a regional protection scheme for distribution network based on logical information is proposed here. Moreover, a regional centralised protection system in parallel with and independent from the existing protec...
Article
In view of the problem that the detailed model of doubly-fed induction generator (DFIG) considering virtual inertia control is high ordered and difficult to analyse, a reduced-order model for DFIG that is applicable to small-signal stability analysis is presented. First, according to the attenuating speed of each state variable, the dynamic charact...
Article
A new pilot protection scheme for transmission line based on virtual sequence transition impedance is proposed in this paper. When the out-zone fault occurs, the value of the imaginary part of the virtual sequence transition impedance is greater than the relay setting value of fault location. For internal faults, the current calculated is high as t...
Article
Concerning the stochastic excitation caused by wind power fluctuation and the stochastic parameter of virtual inertia caused by wind speed uncertainty, a power system stability analysis method considering the Wiener noise is proposed in this paper. First, based on the reduced-order model of DFIG retaining virtual inertia control and phase-locked lo...
Article
Traditional distance protection may mal-operate or refuse to operate in the case of non-metallic faults, endangering the safety of power system. Therefore, a new adaptive distance protection scheme based on the impedance complex plane is proposed in this study. First, by utilising the phase relationship between the negative sequence current at the...
Article
A method to analyze the time-delay stability of stochastic power system with wind power connection is proposed in this paper. First, the reduced-order electromagnetic model of double fed induction generator (DFIG) suitable for time-delay stability analysis is established. Meanwhile, the mechanical power of DFIG is selected as the stochastic excitat...
Article
A new method based on fault chains and the Markov process for analyzing time-delay power system stability is proposed in this article. First, reasonable fault chains are formed using the fault chain generation method based on network power flow. Second, by combining the fault chains and Markov processes, a class of Lyapunov–Krasovskii functionals c...
Article
In view of the maloperation problem in traditional distance protection zone-III caused by overload in lines, an adaptive overload identification method based on the complex phasor plane is proposed in this paper. First, according to the geometric distribution of the measured phasors under different operating conditions, the virtual voltage drop pha...
Article
When grid fault occurs, the doubly fed induction generator short-circuit currents are very complex due to the interaction between the doubly fed induction generator and the grid. As the capacity of wind power generation increases, it has become vital to analyze and evaluate the doubly fed induction generator stator/rotor short-circuit currents corr...
Article
Concerning the difficulty in quantitatively describing the influence of different disturbances on power system stability, a novel composite energy stability region (ESR) is proposed in this study based on the dynamic damping theory. First, considering the influence of time-variant factors in the oscillation process on the dynamic characteristics of...
Article
A new method to analyze the stability of power system with multiple operating conditions considering the stochastic characteristic of wind speed is proposed in this study. First, the parameter Weibull model is used to do fitting prediction of the wind speed variation trend in the short term. Second, the wind speed is divided into different interval...
Article
A method to analyze the angle stability of power system with multiple operating conditions considering cascading failure is proposed in this paper. First, considering stochastic events such as uncertain operation of protection/breaker and system hardware failure, the system operating condition set is determined based on the flow transfer theory and...
Article
Doubly fed induction generator (DFIG) wind turbines with virtual inertia control are coupled to power system in dynamic characteristics, and the control input of virtual inertia control is directly affected by the tracking ability of phase-locked loop (PLL). Thus, it is urgent to study the impact of DFIG wind turbines with virtual inertia control o...
Article
A novel line pilot differential protection principle based on the virtual impedance of fault component is proposed in this paper. First, according to the fault component of the measured current and voltage at both line ends, the fault component of the current and voltage at the line midpoint is calculated. Second, the virtual impedance is defined a...
Article
In view of fault resistance to the influence of distance protection, a new adaptive distance protection scheme for a transmission line is proposed in this article. First, according to the geometric distribution of the measured phasors in fault conditions, the voltage drop equation is established and the adaptive setting coefficient is defined. On t...
Article
A day dispatch strategy for the integrated system (IS) of wind/photovoltaic/pumped-storage/gas-turbine-power/energy-storage plant is proposed in this paper based on the time-frequency scales of power of wind/photovoltaic (PWP). Based on the day-ahead dispatch strategy, the day dispatch optimization model of the IS is first established, and then acc...
Article
Abstract—Current research on short-circuit currents of the doubly fed induction generator is all based on the traditional flux analysis theory. In this article, a novel method to calculate the doubly fed induction generator stator and rotor short-circuit currents is proposed based on the fault equivalent network. First, the fault network is decompo...
Article
In order to improve the performance of the conventional distance protection scheme under high-resistance fault, an adaptive distance protection scheme is proposed in this paper. First, according to the geometric distribution characteristics of voltage and current in the system, the equation of voltage drop from the relaying point to the fault point...
Article
This paper presents a one-terminal fault-location method for interline and grounded faults of double-circuit transmission lines considering the distributed parameter. The influence of mutual inductances is taken into account in a six-sequence network of a distributed parameter model. And the compensation voltage with the help of a co-rotating zero-...
Article
A novel method based on multi-parameter 2nd order perturbation sensitivity is proposed to analyze the low-frequency oscillation modes in large-scale interconnected power system, since the low-frequency oscillation mode change is hard to determine due to the violent fluctuation of multiple parameters during operation. Firstly, the multi-parameter 2n...
Article
The development of large inter-connected power grid poses an urgent need for better adaptability of the backup protection. In this paper, a wide area backup protection tripping strategy based on directional weighting is proposed, on the premise that the fault component has been identified by the limited wide area centralized backup protection. Firs...
Article
In view of the requirement for instantaneity on power system topology analysis, a novel power system topology analysis method is proposed in this paper. For the plant-station topology method, the nodes that represent the circuit breakers are numbered according to the graph theory. On this basis, combining the main wiring characteristics and the swi...
Article
Due to the impossibility for the equilibrium-point eigenvalue method to reflect the oscillation characteristic of the fault system correctly, and the difficulty in choosing the window length using a trajectory eigenvalue method, a model-trajectory method is proposed to analyze the eigenvalue of a fault system. First, the system is equated by the mu...
Article
Abstract—A new fault phase selection method for transmission lines is proposed in this article. First, fault phase selection factors are constructed based on the relationship between the fault current of each phase and the fault current difference of the other two phases at a relay point. By analyzing different characteristics of fault phase select...
Article
A new adaptive interphase backup protection scheme based on intelligent electronic devices (IEDs) is proposed in this paper. When the system is in normal operation state, the backup protection areas are divided according to the operation status and topology of the primary and secondary devices in the power grid. When fault is detected in the system...
Article
A novel method is proposed in this paper to determine the time-delay stability upper-bound of the power system with wide-area damping controllers based on the improved free-weighting matrix and Generalized Eigenvalue Problem (gevp). First, a new class of Lyapunov–Krasovskii functional is constructed and its derivative function along the system is g...
Article
In view of the time delay and potential information loss problem in wide-area data acquisition, a wide-area backup protection algorithm based on the distance protection fitting factor is proposed in this paper. First, the contribution of the distance protection operating information to fault identification is defined as the distance protection cont...
Article
Concerning the maloperation or operation-rejection problem caused by the fault resistance, a novel line protection scheme for a single-phase-to-ground fault based on voltage phase comparison is proposed. First, according to phase relationship between the negative-sequence current at the relaying point and the negative-sequence current at the fault...
Conference Paper
The value setting of the traditional distance protection has become very difficult for the distribution system with distributed generators (DGs) owing to the randomness of the DG output power. This paper proposes a new adaptive distance protection scheme to solve this problem. Firstly, on the basis of the connected point of DGs, the protected feede...
Article
SUMMARYA novel load transfer strategy based on the power transfer capability for main-transformer fault is proposed in this paper. First, the distribution network is simplified to a series of main-transformers inter-connected units and the main-transformers linkage matrix is formed. On this basis, the load transfer area is divided into load transfe...
Article
A power restoration strategy for the distribution network based on the weighted ideal point method is proposed in this paper. First, with the power loss, voltage quality and load balancing as the reconfiguration goal, the comprehensive evaluation function is established. And then, the rough set theory is used to calculate the weight coefficients of...
Article
In view of the potential problems in the system such as sustained oscillation and low damping ratio, which are not considered in traditional small-signal stability region (SSSR), an improved SSSR (ISSSR) calculation method based on the guardian map is proposed. First, according to the map theory, the system is mapped from the ISSSR to the negative...
Article
In view of the reduced low-frequency oscillation damping effect caused by inaccurate modeling of the power system due to various uncertainties, a Youla parameterization robust control strategy considering system uncertainties is proposed in this article. First, the uncertainties of the measurement error and parameter estimation are described by the...
Article
An adaptive damping control scheme based on the dual Youla parameterization is proposed in this paper for inter-area low frequency oscillations. First, a set of observer-based feedback controllers are pre-designed using ${rm H}_{2} /{rm H}_{infty}$ robust control method for a set of nominal operating conditions. Second, the power system and control...
Article
This paper presents a perturbation based method for small-signal stability analysis in microgrid based on the uncertainty of microgrid parameters. The small-signal state-space model is built including the dynamic characteristics of the controllers, the power measurement and the system circuit and load dynamics model. The system eigenvalues of opera...
Article
This paper presents a fitting degree-based multi-fault location algorithm for complex large power grid utilizing wide-area information. Firstly, fault injection current of the equivalent fault points is used in the equivalent model. Then the correlation matrix is formed by the network topology and associated nodal injection current and a network is...
Article
An adaptive damping control scheme based on the classification and regression tree (CART) using wide-area signals is proposed. A family of robust multiple-input multiple-output controllers are designed offline and used in real-time after the current operating point is retrieved from phasor measurement unit (PMU) data with CART interpolation. When t...
Article
Photovoltaic power generation has become one of the state's strategic emerging industries. So the related technology is more and more important. Since the power of photovoltaic system fluctuates randomly, it has drawn much attention to smooth the power output of photovoltaic power generation. An optimal power smoothing control strategy of photovolt...
Article
Abstract—Common wide-area signal selection methods hardly guarantee the control effect of a closed-loop system. In addition, signals selected by these methods could not adapt to different types of controllers and have poor robustness against system uncertainty. Addressing these problems, an optimal signal selection method based on the contribution...
Article
SUMMARYA day-ahead dispatch strategy for the integrated system of wind/photovoltaic/pumped-storage/gas-turbine-power/energy storage is proposed based on the multi-frequency scale power of wind/photovoltaic (PWP). First, filter analysis of the PWP is carried out according to the control target of the system to get the components of PWP under differe...
Article
Since the equilibrium-point eigenvalue method cannot correctly reflect the oscillation characteristics of faulty system and the trajectory eigenvalue method is difficult to set its window length, an eigenvalue analysis method suitable for faulty system is proposed, which equates the system after fault removing by mutual factor, calculates the post-...
Article
SUMMARY In order to achieve stable operation of the microgrid under different modes, a multiple-loop feedback controller is designed in this paper using the inverter output voltage, the capacitor voltage, and the capacitor current as the feedback variable for the outer, middle, and inner loop, respectively. Control parameters are calculated by the...
Article
In view of the low frequency, low damping ratio and long duration characteristics of the inter-area oscillation mode, the stable region is firstly extended by the eigenvalue shifted factor in this paper. Furthermore, a non-convex stable region is designed which can stabilize the system rapidly. Then a mixed H2/H∞ multi-objective robust control stra...
Article
A novel method was proposed to analyze oscillation modals applying 2nd order sensitivity matrix based multiple parameters, since the changed parameters of large-scale connected power grids made the analysis of low-frequency oscillation modals difficult. The 2nd order sensitivity matrices based multiple parameters for eigenvalue and eigenvector were...
Article
Full-text available
A new adaptive voltage protection scheme suitable for distribution networks with potential distributed generation (DG) inserts is proposed in this paper. Firstly, the intelligent electronic devices (IEDs) are utilized to store relevant line parameters, obtain real-time voltage and current data, and facilitate communication among the IEDs. On this b...
Article
In this paper, the different singularity characteristics of differential current of transformer differential protection under inner-zone and out-zone faults are analyzed while the current transformer is saturated. Then, using grille fractal, a new approach to prevent maloperation of transformer differential protection is proposed. Combining the pro...
Article
An operation betweenness based method to assess overloaded lines is proposed. Based on electrical network theory, firstly the branch current sharing factors are deduced; then the operation betweenness of transmission line is defined; finally, on this basis the overload vulnerability of transmission line is assessed. In the proposed method, the impa...
Article
When multiple operating parameters of power system vary severely, it is difficult to continuously describe the damping ratio of oscillation mode and system operational states by interval model, for which, a method of small signal stability analysis based on second order perturbation theory is proposed. The complex second order perturbation model of...
Article
The application of phasor measurement unit (PMU) measurements and adaptive wide-area damping control based on federated Kalman filters are investigated. The Kalman filters used for estimating the operating conditions are federated using chi-square variables and a confidence interval. When the power system is operating precisely at a preselected ope...
Article
Conventional active islanding detection approaches are devastating to distributed generation, while passive islanding detection methods have the disadvantage of a non-detection zone. To solve these two problems, a novel islanding detection method employing positive feedback of voltage harmonic distortion is presented. By introducing a positive feed...
Article
This paper presents a novel method to identify inrush current and internal fault current using the two-instantaneous-value-product algorithm to extract the variation feature of the fundamental current amplitude. First, the two-instantaneous-value-product algorithm is developed, and different variation trends of the fundamental current amplitude for...
Article
An adaptive current protection scheme is proposed for the protection of power systems with penetration of distributed generation (DG). In this scheme, steady state fault current of the related power transmission lines is derived from steady state network equivalent reduction. Then, settings criteria for adaptive primary and backup protection are es...
Article
In allusion to the difficulty of determining low-frequency oscillation modals under evident fluctuation of operational parameters of large-scale complex power grid, a method is proposed to analyze oscillation modals by interval models and complex modal second-order perturbation theory. Firstly, interval distribution models of frequency, damping and...
Conference Paper
A method for computing interval eigenvalues of closed-loop system is proposed using interval theory for low-frequency oscillation in power system. Firstly, the closed-loop system state matrix based on interval parameters is deduced, then, the algorithm for estimating the lower and upper bounds of the interval complex eigenvalues using matrix pertur...
Conference Paper
A new algorithm is proposed to locate multi-fault based on fault fitting degree for complex large power grid. In the normal operating condition, the node admittance matrix is formed according to the network topology structure. When multiple faults occur, by analyzing the fault branch node voltage equation, the fault equivalent model of fault branch...
Conference Paper
A new method is presented to analyze the low frequency oscillation eigenvalues of uncertain system based on second-order perturbation theory. Firstly, the oscillation modes are calculated by first-order and second-order perturbation when system topology changes. Then, with second-order perturbation and interval extension, the interval of eigenvalue...
Conference Paper
Inter-area oscillation modes could be changed with the parameters of large scale power system varying. Therefore, complex modal perturbation is proposed to make modal analysis of inter-area oscillations considering uncertainties in this paper. The 1st order perturbation is applicable for the case of small modification of the parameter. However, if...
Article
Full-text available
This paper presents a systematic design procedure for a wide-area damping controller (WADC) employing Energy Storage Systems (ESSs). The WADC is aimed at enhancing the damping of multiple inter-area modes in a large scale power system. Firstly, geometric measures of controllability and obsevability are used to select the control locations for ESSs...
Conference Paper
This paper proposes a method to analyze the low frequency oscillation (LFO) eigenvalues of uncertain system based on second-order perturbation. Firstly, the uncertain parameters are described by the interval models. Then, with second-order perturbation and interval extension, the upper and lower bounds of eigenvalues are calculated. Finally, the in...
Conference Paper
This paper presents a fitting degree-based multi-fault location algorithm for complex large power grid utilizing wide-area information. Firstly, fault injection current of the equivalent fault points is used in the equivalent model. Then the correlation matrix is formed by the network topology and associated nodal injection current and a network is...
Conference Paper
A method to analyze the low frequency oscillation of the uncertain electric power system is proposed. When the structure of the system changes, based on the system reduced admittance matrix, the classic generator model, and the data acquired by PMU, the change of the system state matrix can be calculated by using Taylor series expansion. With the i...
Conference Paper
The application of PMU measurements and perfect regulation with robust control to damp inter-area oscillations is investigated. Combined with the robust control theory, a perfect regulation control with robust performance is obtained. The closed loop eigenvalues are gradually increasing from the under damping or negative damping to positive damping...
Conference Paper
A novel islanding detection method without devastation and without non-detection zone is proposed. Firstly, the topology of the negative sequence of the microgrid is analyzed when the microgrid operates in grid-connected and islanded. Secondly, according to the changes of equivalent impedance of the negative sequence network, a islanding detection...
Conference Paper
This paper deals with the robust control problem for damping power system low-frequency oscillations considering the uncertainties. In the process of designing the damp controller, uncertain parameters are introduced into perturbation matrix, meanwhile, both the H∞ disturbance depression and the optimal H2 performances of the closed-loop control sy...
Conference Paper
This paper presents a perturbation based method for small-signal stability analysis in microgrid based on the uncertainty of microgrid parameters. The small-signal state-space model is built including the dynamic characteristics of the controllers, the power measurement and the system circuit and load dynamics model. The system eigenvalues of opera...