Methods to Suppress Power Oscillation Caused by Disharmonized Voltage-Source-Controlled Units at Both Sides of Transmission Line

Qiyi Yu; Yi Tang; Senior Member; IEEE

doi:10.23919/PCMP.2024.000383

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Methods to Suppress Power Oscillation Caused by Disharmonized Voltage-Source-Controlled Units at Both Sides of Transmission Line

更新时间：2025-12-10

- Methods to Suppress Power Oscillation Caused by Disharmonized Voltage-Source-Controlled Units at Both Sides of Transmission Line
- Protection and Control of Modern Power Systems Issue 6, Pages: 15-30(2025)
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- DOI：10.23919/PCMP.2024.000383
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- Published：2025
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Qiyi Yu, Yi Tang, Senior Member, et al. Methods to Suppress Power Oscillation Caused by Disharmonized Voltage-Source-Controlled Units at Both Sides of Transmission Line[J]. Protection and Control of Modern Power Systems, 2025, (6): 15-30.
DOI：

Qiyi Yu, Yi Tang, Senior Member, et al. Methods to Suppress Power Oscillation Caused by Disharmonized Voltage-Source-Controlled Units at Both Sides of Transmission Line[J]. Protection and Control of Modern Power Systems, 2025, (6): 15-30. DOI： 10.23919/PCMP.2024.000383.

摘要

Abstract

Previous studies have demonstrated that disharmony among voltage-source-controlled units may occur on an AC transmission or distribution line under steady-state operating conditions or quasi-static operating conditions. To prevent disharmony oscillations from threatening the secure and stable operation of power grids

two novel disharmony oscillation suppression (DOS) methods are proposed in this paper. First

the oscillation characteristics of single-phase instantaneous current and power under disharmony operating conditions are investigated. The key parameters and typical indicators for monitoring disharmony oscillations

such as disharmony frequency and average power

are listed. Second

two DOS strategies are designed based on directly monitoring the frequency difference and indirectly monitoring line power

respectively. Finally

the characteristics of disharmony oscillations are thoroughly analyzed through a case study

and the proposed DOS strategies are validated in simulations using MATLAB/Simulink.

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references

3. S. Li, H. Wang, and Y. Huang et al. ( 2025, May ), “Small-signal stability and parameter regions analysis of grid-forming PV system based on matching control,” Power System Protection and Control, [Online]. Available: https://doi.org/10.19783/j.cnki.pspc.241744 (in Chinese).

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