Research on Dynamic Characteristics and Excitation Control of High-Voltage Direct-Connected Synchronous Condenser

Yang Ruiman; Xiao Shiyong; Zhao Xinyu

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Research on Dynamic Characteristics and Excitation Control of High-Voltage Direct-Connected Synchronous Condenser

POWER CAPACITOR & REACTIVE POWER COMPENSATION

Research on Dynamic Characteristics and Excitation Control of High-Voltage Direct-Connected Synchronous Condenser
高压直挂型调相机动态特性及励磁控制研究
School of Electrical Engineering,Northeast Electric Power University,Jilin 132012,China
(2026)
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Yang Ruiman, Xiao Shiyong, Zhao Xinyu. Research on Dynamic Characteristics and Excitation Control of High-Voltage Direct-Connected Synchronous Condenser[J/OL]. Power Capacitor & Reactive Power Compensation, 2026.
DOI：

Yang Ruiman, Xiao Shiyong, Zhao Xinyu. Research on Dynamic Characteristics and Excitation Control of High-Voltage Direct-Connected Synchronous Condenser[J/OL]. Power Capacitor & Reactive Power Compensation, 2026. DOI：

摘要

针对高比例新能源电力系统电压波动特性突出、动态稳定支撑不足及常规分布式调相机配置升压变压器并网导致响应滞后、功率损耗偏大等问题，依据高压电缆绕组电机结构特性，建立了15Mvar-35kV高压直挂型调相机及传统分布式调相机机网动态仿真模型，开展了电压突变动态工况模拟分析，同时比对两类分布式调相机的动态运行表现，深入剖析了高压直挂型调相机动态特性

揭示了无升压变压器结构的设计优越性，验证了其深度调相能力；针对励磁控制的性能需求，设计了PID、模糊PID、变论域模糊PID励磁控制策略并开展了性能测试。研究表明，高压直挂型调相机可快速提供动态无功支撑，变论域模糊PID控制可提升励磁响应速度并抑制超调，提升系统动态无功支撑与电压稳定能力。

Abstract

Aiming at prominent voltage fluctuation

insufficient dynamic stability support in power systems with high penetration of new energy

as well as delayed response and large power loss caused by step-up transformers equipped in conventional distributed synchronous condensers

dynamic simulation models of 15Mvar-35kV high-voltage direct-connected synchronous condenser and traditional distributed synchronous condenser are established based on structural characteristics of high-voltage cable winding motors. Dynamic simulation analysis under sudden voltage variation conditions is carried out

and dynamic operating performances of the two types of condensers are compared. The dynamic characteristics of high-voltage direct-connected synchronous condenser are thoroughly analyzed

the design merits of transformer-free structure are clarified

and its deep phase modulation capability is verified.In accordance with performance requirements of excitation control

PID

fuzzy PID and variable universe fuzzy PID excitation control strategies are designed and tested. The results show that high-voltage direct-connected synchronous condenser can supply dynamic reactive power support rapidly. Variable universe fuzzy PID control accelerates excitation response and restrains overshoot

effectively improving dynamic reactive power support and voltage stability of power systems.

关键词

Keywords

references

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