Min Zhang's research while affiliated with State Grid Electric Power Research Institute and other places

Publications (35)

Article
In order to analyze the impact of power flow transfer of the DC grid on safe operation, this paper studies the calculation methods of power flow transfer of the DC grid under master–slave control and droop control, including the calculation of power flow transfer in line disconnection situation and converter power changing situation. Through the pr...
Article
Taking on the problems of unstable reconstruction performance and high reconstruction method computational cost induced by the unpredictability of the measurement matrix during power quality signal reconstruction, this research provides a power quality reconstruction model based on a self-encoding network and compressed sensing for the first time....
Article
Power quality analysis and governance need the identification of power quality issues. With the use of smart meters and various smart collection devices, more and more power quality data are collected, and the massive data collection brings pressure on communication, storage and computation to the conventional algorithm for identifying and classify...
Article
The development of the DC distribution system (DCDS) has attracted increasing attention, due to its technological superiorities in integrating new energy sources and DC power loads more friendly and effectively. In this paper, a comprehensive evaluation method is proposed for the medium-low medium–low voltage DCDS to handle the voltage sag assessme...
Article
Full-text available
A three-phase three-wire voltage source converter (VSC) can produce third harmonics when it is operated under an unbalanced condition. It is essential to understand the mechanism of the production of this third harmonic and to assess its impact on power systems. Therefore, this paper presents an analytical model of the VSC under the unbalanced cond...
Article
Full-text available
A virtual power plant (VPP) can aggregate distributed renewable energy and flexible load to participate in the electricity market as a virtual controllable assembly. This pattern can effectively avoid the bidding risk of users, and produce cooperation benefits such as reducing transaction costs. Reasonable profit allocation is the key factor to det...
Article
In order to enable the permanent magnet synchronous generator (PMSG)-based wind turbine (WT) to capture more wind energy while providing fast frequency supports effectively during disturbances, this paper proposes a time-sharing frequency coordinated control (TFCC) strategy. Firstly, a rotor virtual inertia control and a DC-link virtual inertia con...
Article
Full-text available
The fault current level analysis is important for bipolar DC grids, which determines the operation and protection requirements for the grids. The DC grid topology significantly impacts the current path and then the fault current level of the grid, which makes the grid topology design a cost-efficient and effective fault current limitation solution....
Article
Full-text available
In order to effectively evaluate the reactive power support capability of new energy stations, an evaluation system is established with the high voltage ride through(HVRT) capability, low voltage ride through (LVRT) capability and reactive power support capability selected as the evaluation index. And then, a comprehensive evaluation method to effe...
Article
Full-text available
As photovoltaic, wind power and other new energy sources are connected to the power grid on a large scale, the research on key technologies of microgrid needs to be further improved. Since most distributed generation and energy storage devices are mostly powered by direct current, DC distribution technology has got more and more attention. Aiming a...
Article
Full-text available
In this paper, it researches the DC-ring distribution network protection scheme. Firstly, it analyzes the fault characteristics of the voltage source converter (VSC) during the DC line-to-ground. Secondly, it proposes a DC distribution network protection scheme based-on local measurement. The quadratic time-varying function is utilized to predict t...
Conference Paper
In order to avoid the harmonics of traction power supply system delivered to superior power system substation and have a detrimental effect on the quality of public power grid, the scheme, substation equipped with passive filters, processing the problem of harmonics delivered to power system substation was proposed in this paper. Based on the measu...

Citations

... Recently, profit allocation for a virtual power plant (VPP)-based electricity market model was introduced for several other objectives, such as fairness of profit allocation, the attraction of participating entities, and stability of cooperative alliance. To solve this, a market model, multi-objective evolutionary optimization algorithm is used by the authors of [31]. To encourage consumers, a real-time pricing (RTP) and demand response (DR) program are mathematically modelled and implemented to solve energy management problems via scheduling residential loads. ...
... In order to fully tap the application potential of energy storage, some studies propose the concept of shared energy storage (Zhao et al., 2020). Some studies propose a business model for utility-scale shared energy storage systems (Ben-Idris et al., 2021), while other studies analyze the complementary and controllable capabilities of energy storage that promote new energy consumption, and study the multiple energy storage sharing mechanism (Xv et al., 2022). Further, some studies use a hybrid storage system for energy sharing within the prosumers' community (Mussadiq et al., 2022). ...
... The inverters adopting current-controlled VSG (i-VSG) control strategy are regarded as the current source, which synchronize with the grid by PLLs. In this control mode, the VSG control emulates the SG's primary voltage and frequency regulation characteristics by adding droop characteristics and virtual inertia to the control loop (Fan et al., 2021). The output of the SG emulation control part in i-VSG is the reference value of the output power and the central control equations are shown in Eqs 4, 5 with the illustration in the Figure 3. ...
... However, due to the constraints of policies and regulations, environmental protection and costs, the newly proposed power transmission lines have been reduced and limited. Simultaneously, renewable energy's sharply increasing also makes the traditional transmission line face the power fluctuation pressure [3], such that developing new power transmission technology and increasing existing AC transmission lines' capacity is the more useful method to improve the large-scale power grid efficiency [4]. ...
... It can be seen that LCC-HVDC are widely used for supplementary damping. But compared with the voltagesourced converter-based (VSC) HVDC, the LCC-HVDC is usually suffered from the commutation failure problem (Zhang, 2021). So, some people start designing the supplementary damping control through the VSC-HVDC system. ...
... Backhaus et al. [11], who used the average power conversion efficiencies, suggested a more detailed simulation-based study be conducted using power converter efficiency curves that take into account converter performance at part load conditions. The authors in [12] examined the efficiency of RER-based DC and AC MGs and established a selection principle for distribution system type based on an analysis of the system loss rate. Nonetheless, the investigation took static converter efficiency into account. ...
... Set ⟵ + 1, and return to step 1. The flowchart of the iteration process can be described in Fig.11 Solve the tractable conic program (31) Solve the tractable conic program (30) Obtain the solution set ...
... In the weak grid studies, a robust current control is used to improve the converter's stability [14], a grid impedance estimation based adaptive control is used to maintain the converter's stable operation in [15], a quasi-proportional resonance feedforward control is used to enhance the converter's robust ability [16], a small-signal disturbance compensation control is used to mitigate the weak grid's influence [17], a novel grid voltage feedforward control is used to suppress the effect of grid voltage harmonics [18], all these studies greatly improve the performance of the converter in weak grid. However, the studies are mainly based on traditional nonlinear control, some complex models are needed, and a large amount of computation are also needed in practical application. ...
... In [4], based on the uncertainty of renewable energy, a regional energy transport planning model is established to minimize the social cost. In [5], unit combination with multi regional security constraints is established, and the risk of power grid operation in typical scenarios is quantified to improve the solution speed of unit combination scheme and reduce the impact of wind power uncertainty. ...
... The performance exerted by PPF depends on two key factors: the circuit topology and the selection of the proper parameters. Therefore, designing a PPF seems challenging due to the uncertain operating conditions requiring continuous measurements [8]. Accordingly, several methods have been presented in the literature to overcome these issues [9,10]. ...