Unified Residue Method for Design of Compact Wide-area Damping Controller Based on Power System Stabilizer

Qi, Jun; Wu, Qian; Zhang, Youbing; Weng, Guirong; Zhou, Dan

doi:10.35833/mpce.2018.000370

Cited by 23 publications

(12 citation statements)

References 25 publications

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“…From Table 1, the first step of the system emergency condition is concentrated through IAO identification schemes. In this case, researchers present different techniques as correlation coefficient [2,8,9], residue [3], gradient [4], eigenvalue analysis [5], WAMS-based data [6] and MIMO technique [7] to identify IAO in power systems. By identifying an IAO, the next step is devoted to controller performances through damping the oscillation.…”

Section: Literature Reviewmentioning

confidence: 99%

Adaptive criteria of estimating power system separation times based on inter‐area signal

Ranjbar

2023

IET Generation Trans & Dist

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This paper presents an online protective scheme of estimating critical inter‐area angle for controlling the inter‐area oscillations based on evaluating the rate of changes of rotor angle oscillations as an adaptive tripping index (ATI)‐based protective zone. For this purpose, by using wide area measuring system technology, oscillatory signals Δδ and Δω are measured which based on correlation coefficients criteria, coherent groups are identified which based on evaluating oscillating areas, inter‐area signals ΔδCOI‐AB and ΔωCOI‐AB are provided. In the case of evaluating an inter‐area oscillation, the proposed ATI scheme is activated which the first zero crossing point (ZCP0) of δCOI‐AB is determined as the critical criteria for estimating unstable situation. The proposed ATI approach consists of two adaptive protective zones ATI1 and ATI2 to estimate inter‐area oscillatory and inter‐area transient instabilities, respectively. The proposed ATI is an online and non‐model‐based scheme which evaluates the system dynamic stability through two straight and sinusoidal‐based adaptive zones. The effectiveness of the proposed ATI approach is evaluated on three different test systems IEEE 39‐bus, modified IEEE 39‐bus with converter‐based low inertia sources and a practical Iran nation power grid with presenting positive effects of damping inter‐area oscillations through different operational and topological conditions.

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Section: Literature Reviewmentioning

confidence: 99%

Adaptive criteria of estimating power system separation times based on inter‐area signal

Ranjbar

2023

IET Generation Trans & Dist

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“…Through Equation ( 2), the small-signal model of generator's current and voltage is derived as shown in Equation (3).…”

Section: System Modelingmentioning

confidence: 99%

“…The grid-connected inverters are the crucial component that delivers renewable energy and energy storage to the grid. The grid-connected inverter should play a more critical role in the power system [1][2][3][4][5][6]. Due to the negative damping effect of the power system, the phenomenon of low frequency oscillations (LFOs) often occurs on the transmission lines with long distances, heavy loads or weak connections.…”

Section: Introductionmentioning

confidence: 99%

Low Frequency Damping Control for Power Electronics-Based AC Grid Using Inverters with Built-In PSS

et al. 2021

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Low frequency oscillations are the most easily occurring dynamic stability problem in the power system. With the increasing capacity of power electronic equipment, the coupling coordination of a synchronous generator and inverter in a low frequency range is worth to be studied further. This paper analyzes the mechanism of the interaction between a normal active/reactive power control grid-connected inverters and power regulation of a synchronous generator. Based on the mechanism, the power system stabilizer built in the inverter is used to increase damping in low frequency range. The small-signal model for electromagnetic torque interaction between the grid-connected inverters and the generator is analyzed first. The small-signal model is the basis for the inverters to provide damping with specific amplitude and phase. The additional damping torque control of the inverters is realized through a built-in power system stabilizer. The fundamentals and the structure of a built-in power system stabilizer are illustrated. The built-in power system stabilizer can be realized through the active or reactive power control loop. The parameter design method is also proposed. With the proposed model and suppression method, the inverters can provide a certain damping torque to improve system stability. Finally, detailed system damping simulation results of the universal step test verify that the analysis is valid and effective.

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“…Design of WADCs considering time delays has been addressed, such as designing robust controllers to treat the time delay as a part of the system uncertainties [21][22][23], compensating the time delays by designing a delay compensator [24][25][26][27], delay-dependent stability analysis of WADC and using the calculated delay margins as an additional performance index [13,28,29]. However, those results usually only consider single time delay case or simplify multiple different time delays as a single time delay by assuming the time delays in different communication channels are the same.…”

Section: Introductionmentioning

confidence: 99%

Coordinated design of delay‐dependent wide‐area damping controllers considering multiple time delays

Yao

Yan

Liu

et al. 2021

IET Generation Trans & Dist

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This paper investigates coordinated design of multiple wide-area damping controllers (WADCs) for damping multiple inter-area oscillations considering communication delays in multiple control loop. Two approaches have been investigated: the sequential approach which uses the stability criteria for single delay and design the WADC independently, and the coordinated approach which employs a less conservative and fast Lyapunov stability criterion for linear system with multiple delays to calculate delay margins simultaneously and coordinately design the multiple WADCs. The sequential approach cannot reveal the interaction among several WADCs loops with multiple delays and may lead to inaccurate delay margins, while the coordinated approach takes into account interactions of delays between different WADC control loops and can result in accurate delay stable region and relationship between delay margins and the WADC gains. Gains of WADCs are determined based on a trade-off between damping performance and delay margin. Case studies are based on the modified IEEE 10-machine 39-bus power system equipped with two FACTS devices and two WADCs. The feasibility and effectiveness of the proposed approach is verified by simulation studies. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Unified Residue Method for Design of Compact Wide-area Damping Controller Based on Power System Stabilizer

Cited by 23 publications

References 25 publications

Adaptive criteria of estimating power system separation times based on inter‐area signal

Adaptive criteria of estimating power system separation times based on inter‐area signal

Low Frequency Damping Control for Power Electronics-Based AC Grid Using Inverters with Built-In PSS

Coordinated design of delay‐dependent wide‐area damping controllers considering multiple time delays

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