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Application of IEEE STD 519-1992 Harmonic Limits
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IEEE Std 519-1992 is a useful document for understanding harmonics and applying harmonic limits in power systems. Despite many years of good use there is still some confusion about how to apply certain aspects of the standard. This paper discusses some of those, as well as related issues that are helpful in working with harmonic limits. There is considerable debate as to precisely how some elements of IEEE Std 519-1992 should be interpreted. This paper presents the authors' views on some of the more ambiguous elements of the standard and on the application of harmonic limits in general
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... 519 recommends specific limits to ensure the quality of power at the PCC. According to [9], it stipulates that the total harmonic distortion should not exceed 5%, and individual voltage distortion should be within 3%. Additionally, it provides guidelines for limiting the current distortion concerning the short circuit current (Isc) to load current ratio (IL), emphasizing the attenuation of higher-order harmonic components. ...
... Standards and regulations [1], [2], [3], [4], [9], [10][34] ✓ Different modeling methods [18], [20], [35] SRF and SF Filter designing [10], [36], [37], [38], [39] with minimum energy storage Different control techniques [21], [22], [17], [40]. [41] VOC with PI and PR controllers Controller tuning techniques [23], [24] ZN, PSO and GA implementation ...
... The plant function, considering all aspects outlined in section III, and tested it in MATLAB/SIMULINK. This testing helps us select accurate parameters in line with standard requirements [4], [9]. The controller gain values have been diligently calculated using three distinct methods to optimize controller performance during operation. ...
... Similarly, as per IEEE standard 519-1992, the total harmonic distortion (THD) rate must be less than 5% of the fundamental frequency, and each particular harmonic distortion should not be more than 3% [6]. If the THD exceeds the abovementioned limit, it will be considered a severe power quality concern. ...
... If the THD exceeds the abovementioned limit, it will be considered a severe power quality concern. According to international standards, such systems are not recognized [6]. As a result, the lifespan of electronic equipment is shortened because of the harm done to its delicate components [7]. ...
... The lowest THD percentage was observed with SPWM with ANN control strategy, with only 1.83% THD. However, both controllers with different inverter types have almost similar values and whiten accepted levels which are below the 5%THD [6]. ...
Photovoltaic (PV) solar energy is considered one of the highest renewable energy (RE) resources worldwide. Hence, PV system installation capacity is increasing, triggering new power quality problems in grid systems. Some examples of these problems include unbalanced voltages, fluctuating power levels, harmonic distortions, or reverse power flow. To mitigate the adverse impacts of PV integration on voltage regulation and harmonic distortion in electrical distribution systems, a distribution static synchronous compensation (D-STATCOM) is considered a solution. A simulation study is performed by modeling a power system model with an integrated PV system and D-STATCOM. Two control schemes, proportional-integral (PI) and artificial neural network (ANN), were applied within the internal control of D-STATCOM to enhance the power quality of the power system. Two different inverter configurations were adapted, a sinusoidal pulse width modulation (SPWM) and a hysteresis current controller (HCC). Results are obtained as voltage profiles for all the considered control schemes with different inverter types under different contingency conditions. The performance is also evaluated by control characteristics evaluation for different controllers. The controller ANN has better performance than the PI controller and it can mitigate power quality problems and the impact of the PV integration on voltage regulation and harmonic distortion.
... 519 recommends specific limits to ensure the quality of power at the PCC. According to [9], it stipulates that the total harmonic distortion should not exceed 5%, and individual voltage distortion should be within 3%. Additionally, it provides guidelines for limiting the current distortion concerning the short circuit current (Isc) to load current ratio (IL), emphasizing the attenuation of higher-order harmonic components. ...
... Standards and regulations [1], [2], [3], [4], [9], [10][34] ✓ Different modeling methods [18], [20], [35] SRF and SF Filter designing [10], [36], [37], [38], [39] with minimum energy storage Different control techniques [21], [22], [17], [40]. [41] VOC with PI and PR controllers Controller tuning techniques [23], [24] ZN, PSO and GA implementation ...
... The plant function, considering all aspects outlined in section III, and tested it in MATLAB/SIMULINK. This testing helps us select accurate parameters in line with standard requirements [4], [9]. The controller gain values have been diligently calculated using three distinct methods to optimize controller performance during operation. ...
In this study the grid impedance-based stability is concerned and improve the inverter stability for lower-voltage distribution networks. Also proposes the optimal filter and controller parameters for weak grids, considering IEEE std 519. The two methods are employed to enhance the inverter stability: (A). Changing the output impedance of the VSI by adjusting the grid-side inductance, (B). Optimizing the parameters for filter design and VSI controller. Ziegler-Nichols (ZN), Particle Swarm Optimization (PSO) and a real coded Genetic Algorithm (GA) are used to obtain the optimized CCL parameters to maintain the VSI stability and Total Harmonic Distortion (THD) level at the Point of Common Coupling (PCC) during the parametric uncertainty. The VSI-based system connected to the weak grid and in standalone mode is simulated on a real-time simulator, i.e., Typhoon HIL, to validate the effectiveness of obtained optimized CCL parameters by changing various conditions like filter inductance variation, grid Short Circuit Ratio (SCR), output power regulation and sudden load change in a standalone distribution network. The MATLAB/SIMULINK with m-files is utilized for the parameters optimization and controller model simulation purposes for VSI-based system. This paper presents a comprehensive review on how to choose the best inverter component parameters and their impact under different real-world conditions, whether the inverter is connected to the grid or not.
... In Fig. 10, the voltage of the sinusoidal network is without distortion. But the network voltage, in Fig. 11, has a series of harmonic components according to the IEEE 519-1992 standard [30], the amount of harmonic distortion of the total voltage is limited to 5%. Accordingly, we have considered the amount of voltage distortion to be 4.82%, which has 3.5%, 3%, 1% and 1% of the fifth, 7th, 11th and 13th harmonic, respectively. ...
... So, the amount of harmonic distortion of the flow in Fig. 14. is 19.4% for the Fuzzy PI controller and 2.39% for the novel proposed ones. According to the standards IEEE 1547 and IEEE 519-1992 [30], which allows the harmonic value of current up to 5%, it is a suitable value. All numerical results were derived after 25 runs according to the Monte Carlo simulation [31,32]. ...
The importance and application of state-of-the-art control techniques in the grid networks of inverter-based distributed generation units not only improve the performance in unbalanced situations but also supplement the efficiency of the system in normal conditions. Intelligent control is necessary and mandatory due to the unbalanced load distribution that occurs permanently in the three phases of the microgrid. A current controller, in this research, used in distributed generation sources is presented and is designed to compensate for high harmonics and a suitable dynamic speed to track the reference current in a short transient time. Our innovative controller is composed of a repetitive control to eliminate harmonics and an adaptive fuzzy type-2 proportional-integral (PI) control. This controller not only performs simultaneous compensation of harmonics and has a suitable dynamic response to track the reference current in a small transient time, but also improves the bandwidth and stability of the system. Finally, the performance and result of the controller are shown by simulation for a three-phase converter connected to the network of local non-linear loads.
... Therefore, it essential to measure, analysed and limit harmonics in electrical system. There are various national and international standards governing the limits of total harmonic distortion (TDH) like IEEE 519, IEC 61000, EN 50160 and NRS 048-02 [4,5] etc. The recommended practices and harmonic limits prescribed by IEEE519-2014 and IEC 61000-3-4 are widely used by the commercial simulation programs to calculate and analysed the harmonic current, voltage and Total Demand Distortion (TDD). ...
In this paper the methodology for harmonic and energy saving analysis for a laboratory building at the university campus in Oman have been proposed. The harmonics generated by the two variable frequency drives used for heating, ventilating and air conditioning of the building was modelled and simulated using SOLV and ETAP simulation software. The current and voltage distortion levels were measured under different loading scenarios. It is observed that lower order odd harmonics are dominating and can be mitigated using advanced universal harmonic filter to compliance the IEEE519 standard. The simulated results have revealed that about 10% of total energy consumed by induction motors can be saved by using VFDs along with extenuating all prevailing harmonics of the HVAC system.
At present, microgrids (μGs) are a focal point in both academia and industry due to their capability to sustain operations that are stable, resilient, reliable, and of high power quality. Power converters (PCs), a vital component in μGs, enable the decentralization of power generation. However, this decentralization introduces challenges related to power quality. This paper introduces a μG model, based on the IEEE 14-bus distribution system, with the objective of investigating power quality when the μG is operating in conjunction with the conventional power grid. The μG model was developed using MATLAB-Simulink®, a tool specialized for electrical engineering simulations. The results obtained undergo thorough analysis and are compared with the compatibility levels set by the IEEE-519 standard. This method enables a precise evaluation of the μGs’ capacity to maintain acceptable power quality levels while interconnected with the conventional power grid. In conclusion, this study contributes significantly to the field of μGs by providing a detailed and quantitative assessment of power quality. This will assist in the design and optimization of μGs for effective implementation in real-world electric power systems.
The authors report the changes that are included in the revised Standard IEEE-519. In order to better understand what the standard means in practical terms, two applications of the standard are discussed in detail: a large industrial plant furnished at transmission voltage and several users on a single distribution feeder. An outline of the standard's contents is given, its introduction and scope are reproduced, and samples of harmonic filter specifications are provided
Price and Performance Considerations for Harmonic Solutions
- D J Carnovale
- T J Dionise
- T M Blooming
D. J. Carnovale, T. J. Dionise, and T. M.
Blooming,
"Price
and
Performance
Considerations for Harmonic Solutions,"
Power Systems World, Power Quality 2003
IEEE Recommended Practices and Requirements for Harmonic Control in Electric Power Systems
IEEE Std 519-1992, "IEEE Recommended
Practices and Requirements for Harmonic
Control in Electric Power Systems," ©
Institute of Electrical and Electronics
Engineers, Inc. 1993.