考虑多直流协调恢复的换相失败预测控制启动值优化方法

WANG Yu

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考虑多直流协调恢复的换相失败预测控制启动值优化方法

更新时间：2025-08-13

- 考虑多直流协调恢复的换相失败预测控制启动值优化方法
- Automation of Electric Power Systems Vol. 42, Issue 22, Pages: 85-90(2018)
- 作者机构：
  
  南瑞集团(国网电力科学研究院)有限公司,江苏省,南京市,211106
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2018
- 稿件说明：
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WANG Yu. [J]. Automation of electric power systems, 2018, 42(22): 85-90.
DOI：

WANG Yu. [J]. Automation of electric power systems, 2018, 42(22): 85-90. DOI：

摘要

换相失败预测控制环节在降低换相失败概率和连续换相失败风险的同时，往往需要交流系统提供更强的无功支撑，进而对直流自身及其他直流的换相失败特性和恢复特性产生影响。首先分析了直流恢复能力及其恢复过程中多馈入直流的无功支撑耦合影响，综合考虑直流近区动态无功补偿设备的支撑能力，提出一种考虑多馈入直流交互作用的直流换相失败预测环节启动门槛值优化方法，以实现多回直流的协调恢复，降低直流发生连续换相失败风险和直流换相失败对电网的功率冲击。基于实际多馈入直流电网的仿真算例验证了所提方法的有效性。

Abstract

Commutation failure prediction control(CFPREV)is equipped to reduce the probability of commutation failure and the risk of continuous commutation failure

but when it acts

more reactive power is required from AC system

which will affect the commutation failure characteristics and the recovery process of the AC and DC interconnected system. The reactive support coupling influence of multi-infeed DC in the restorability and restore process of the HVDC system is analyzed

and then an optimization method of CFPREV startup threshold is proposed considering the influence of the support ability of dynamic reactive power compensation devices

to achieve coordinated recovery of the whole system and reduce the risk of continuous commutation failure and its power impact on AC system. The effectiveness of the proposed method is verified based on the actual multi-infeed DC power grid simulation.

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Coordinated Control Method for Commutation Failure Prevention Considering Reactive Power Interaction Among Multiple HVDC Systems

Preventive Strategy for Mitigation of Commutation Failure Based on Finite Time Domain Prediction Algorithm of DC Current

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