考虑风电场调控裕度的风火打捆直流外送系统无功电压紧急控制策略

doi:10.11930/j.issn.1004-9649.202211016

中国电力 ›› 2023, Vol. 56 ›› Issue (4): 77-87.DOI: 10.11930/j.issn.1004-9649.202211016

• 新能源基地经直流送出系统稳定性分析与控制技术 • 上一篇下一篇

考虑风电场调控裕度的风火打捆直流外送系统无功电压紧急控制策略

周文俊¹, 曹毅¹, 李杰¹, 金涛¹, 陈文剑², 周霞²

1. 国网江苏省电力有限公司, 江苏南京 210008;
2. 南京邮电大学先进技术研究院, 江苏南京 210023

收稿日期:2022-11-03 修回日期:2023-03-10 出版日期:2023-04-28 发布日期:2023-04-26
作者简介:周文俊(1986-),男,博士,高级工程师,从事电网调度运行、电力系统技术研究,E-mail:328282662@qq.com;曹毅(1984-),男,硕士,工程师,从事电网调度运行、新能源并网研究,E-mail:478690256@qq.com;李杰(1982-),男,硕士,工程师,从事电网调度运行,E-mail:183813318@qq.com;金涛(1980-),男,博士,研究员级高级工程师,从事电网调度运行研究,E-mail:lang80hua@126.com;陈文剑(1997-),男,硕士研究生,从事电力系统稳定研究工作,E-mail:1221056010@njupt.edu.cn;周霞(1978-),女,通信作者,博士,高级工程师,从事电力系统分析与控制方面的研究工作,E-mail:zhouxia@njupt.edu.cn
基金资助:
国家自然科学基金资助项目（多重耦合不确定影响下智能电网多时空尺度协调控制与主动防御，61933005）

Reactive Voltage Emergency Control Strategy of Wind-Thermal-Bundled DC Transmission System Considering Wind Farm Regulation Margin

ZHOU Wenjun¹, CAO Yi¹, LI Jie¹, JIN Tao¹, CHEN Wenjian², ZHOU Xia²

1. State Grid Jiangsu Electric Power Co., Ltd., Nanjing 210008, China;
2. Institute of Advanced Technology, Nanjing University of Posts and Telecommunications, Nanjing 210023, China

Received:2022-11-03 Revised:2023-03-10 Online:2023-04-28 Published:2023-04-26
Supported by:
This work is supported by National Natural Science Foundation of China (Multi Temporal and Spatial Scale Coordinated Control and Active Defense of Smart Grid under the Influence of Multiple Coupling Uncertainties, No.61933005).

摘要/Abstract

摘要： 为抑制直流送端电网暂态过电压，充分发挥风电在风火打捆直流外送系统功率调节作用，提出了一种考虑风电场调控裕度的无功电压紧急控制策略。首先，分析换相失败故障下风火打捆系统电气量变化及故障引发直流送端过电压机理；其次，在遭遇换相失败故障后通过降低直流输送功率抑制直流系统连续换相失败，减少故障恢复期间系统无功需求，分析功率速降后系统无功潮流变化；再次，针对盈余无功导致送端暂态高压提出直流送端无功电压紧急控制策略，根据超短期预测风速对风电场无功裕度进行分配，针对不同情形设计具有多种工作模式的风机控制器；仿真结果表明：所提控制方法能够较好地解决风火打捆直流外送系统直流送端暂态过电压问题。

关键词: 风火打捆直流外送, 电压越限, 自适应无功控制策略, 自适应下垂控制, 有功削减控制

Abstract: In order to suppress the transient overvoltage of direct current (DC) sending-end power grid and make full use of wind power in the power regulation of wind-thermal-bundled DC transmission system, a reactive voltage emergency control strategy considering wind farm regulation margin is proposed. Firstly, the change in the electrical quantity of the wind-thermal-bundled system under commutation failure and the overvoltage mechanism of the DC sending end caused by the failure are analyzed. Secondly, after the commutation failure, the continuous commutation failure of the DC system is suppressed by reducing the DC transmission power. Therefore, the reactive power demand of the system during the fault recovery period is reduced, and the reactive power flow change in the system after the power drop is analyzed. Thirdly, the reactive voltage emergency control strategy of the DC sending end is proposed for the transient high voltage of the sending end caused by surplus reactive power. The reactive power margin of the wind farm is allocated according to the ultra-short-term predicted wind speed, and the wind turbine controller with multiple working modes is designed for different situations. Finally, the simulation results show that the proposed control method can better solve the transient overvoltage problem at the DC sending end of the wind-thermal-bundled DC transmission system.

Key words: wind-thermal-bundled DC transmission, voltage out of limit, adaptive reactive power control strategy, adaptive droop control, active power reduction control

周文俊, 曹毅, 李杰, 金涛, 陈文剑, 周霞. 考虑风电场调控裕度的风火打捆直流外送系统无功电压紧急控制策略[J]. 中国电力, 2023, 56(4): 77-87.

ZHOU Wenjun, CAO Yi, LI Jie, JIN Tao, CHEN Wenjian, ZHOU Xia. Reactive Voltage Emergency Control Strategy of Wind-Thermal-Bundled DC Transmission System Considering Wind Farm Regulation Margin[J]. Electric Power, 2023, 56(4): 77-87.

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https://www.electricpower.com.cn/CN/Y2023/V56/I4/77

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考虑风电场调控裕度的风火打捆直流外送系统无功电压紧急控制策略

Reactive Voltage Emergency Control Strategy of Wind-Thermal-Bundled DC Transmission System Considering Wind Farm Regulation Margin

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考虑风电场调控裕度的风火打捆直流外送系统无功电压紧急控制策略

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