多直流异步互联系统中频率限制器的控制策略优化设计

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多直流异步互联系统中频率限制器的控制策略优化设计

更新时间：2025-08-13

- 多直流异步互联系统中频率限制器的控制策略优化设计
- Automation of Electric Power Systems Vol. 42, Issue 12, Pages: 167-172(2018)
- 作者机构：
  
  华南理工大学电力学院,广东省,广州市,510641
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2018
- 稿件说明：
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GAO Qin. [J]. Automation of electric power systems, 2018, 42(12): 167-172.
DOI：

GAO Qin. [J]. Automation of electric power systems, 2018, 42(12): 167-172. DOI：

摘要

云南电网通过多回直流输电系统和南方电网东部主网异步联网运行

直流频率限制器(frequency limit controller

FLC)在送端系统频率控制中发挥重要作用。在楚穗直流单极闭锁试验中

暴露了FLC与一次调频动作不匹配、直流输电系统长时间处于过负荷运行状态的问题。针对此问题

建立FLC详细的数学模型

通过FLC动态调节过程的分析

阐明FLC不同模型的调节特征

以及与一次调频的协调配合关系。在此基础上

通过时域仿真法研究了FLC备用容量、死区设置对频率峰值和FLC调节量释放过程的影响

提出FLC 调频策略的优化设计方案

并基于特征值灵敏度方法重新设计调速器参数

优化其动态性能。采用所提方案能够充分发挥FLC对频率峰值的抑制作用

同时与一次调频配合

保证其调节量的快速释放

实际运行结果验证了优化策略的有效性。

Abstract

Yunnan power grid asynchronously interconnects with the main grid of China Southern Power Grid by multiple high voltage direct current (HVDC) transmission systems

and the frequency limit controller (FLC) plays a significant role in the frequency control of sending-side system. In the HVDC single-polar block experiment

which is called Chuhui DC system

some HVDC transmission lines operate in an overloaded mode for a long time because of the mismatching between FLC and primary frequency control(FPC). By analyzing the dynamic regulation process of the FLC

regulatory characteristics of different models of the FLC and the coordinated cooperation relationship with primary frequency regulation are clarified. On the basis of that

the paper analyzes the influence of FLC reserve capacity

dead band on the frequency peak and releasing process of FLC by time domain simulation and a frequency modulation strategy of FLC is proposed. Furthermore

the governor parameters are redesigned by eigenvalue sensitivity method for improving the dynamic performance of FPC

which can make the best of FLC on frequency peak restriction and cooperate with primary frequency regulation in the meanwhile to guarantee the rapid release of its adjustment. The results of operation show the availability of proposed strategies.

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Related Institution

Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education (Shandong University)

Southwest Branch of State Grid Corporation of China

NARI Group Corporation (State Grid Electric Power Research Institute)

State Key Laboratory of Power Grid Safety and Energy Conservation (China Electric Power Research Institute)

National Key Laboratory of Power Systems in Shenzhen (Shenzhen International Graduate School, Tsinghua University)

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