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山东大学学报 (工学版) ›› 2020, Vol. 50 ›› Issue (3): 98-103.doi: 10.6040/j.issn.1672-3961.0.2019.575

• 电气工程 • 上一篇    下一篇

考虑同步调相机无功特性的多馈入直流同时换相失败风险评估方法

麻常辉1(),王亮2,谭邵卿3,卢奕3,*(),马欢1,赵康1   

  1. 1. 国网山东省电力公司电力科学研究院, 山东 济南 250002
    2. 国网山东省电力公司, 山东 济南 250001
    3. 电网智能化调度与控制教育部重点实验室(山东大学), 山东 济南 250061
  • 收稿日期:2019-10-08 出版日期:2020-06-20 发布日期:2020-06-16
  • 通讯作者: 卢奕 E-mail:machanghui@163.com;luyi_ee@mail.sdu.edu.cn
  • 作者简介:麻常辉(1975—)，男，山东烟台人，教授级高级工程师，博士，主要研究方向为电网规划,电力系统安全分析与控制. E-mail:machanghui@163.com
  • 基金资助:
    国网山东省电力公司科技资助项目

Multi-infeed HVDC simultaneous commutation failure risk evaluation method considering synchronous condenser reactive power

Changhui MA1(),Liang WANG2,Shaoqing TAN3,Yi LU3,*(),Huan MA1,Kang ZHAO1   

  1. 1. State Grid Shandong Electric Power Research Institute, Jinan 250002, Shandong, China
    2. State Grid Shandong Electric Power Company, Jinan 250001, Shandong, China
    3. Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education (Shandong University), Jinan 250061, Shandong, China
  • Received:2019-10-08 Online:2020-06-20 Published:2020-06-16
  • Contact: Yi LU E-mail:machanghui@163.com;luyi_ee@mail.sdu.edu.cn
  • Supported by:
    国网山东省电力公司科技资助项目

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摘要：

针对加装同步调相机后多馈入直流输电系统同时换相失败问题,提出一种考虑同步调相机无功电压特性的风险评估方法。分析同步调相机、直流系统和静态无功补偿装置的无功电压特性,并推导出多馈入交互因子(multi-infeed interaction factor, MIIF)计算公式。根据换相失败本质定义换相失败评估因子(commutation failure estimate factor, CFEF),并基于CFEF提出含同步调相机的多馈入直流系统同时换相失败风险评估方法。以山东电网为例进行验证,结果表明所提方法能够准确、有效评估多馈入直流输电系统同时换相失败,并且在直流输电系统前期规划、保证交直流系统安全稳定运行等方面具有重要价值。

关键词: 多馈入直流输电系统, 多直流换相失败, 同步调相机, 多馈入交互因子, 换相失败评估因子

Abstract:

In order to improve the "Strong alternating current and weak direct current" characteristics of multi-infeed high voltage direct current systems, the synchronous condenser gradually gained attention.For the problem of multi-infeed high voltage direct current with synchronous condenser simultaneous commutation failure, a risk evaluation method considering the synchronous condenser reactive voltage characteristics was proposed. Firstly, the reactive voltage characteristics of the synchronous condenser were analyzed, and the multi-infeed interaction factor was calculated by reactive voltage sensitivity of the synchronous condenser, high voltage direct current system and static reactive power compensation device. Then, based on the nature of the commutation failure, the commutation failure evaluation factor was defined, and the simultaneous commutation failure risk of the multi-infeed high voltage direct current system with synchronous condenser was evaluated. Finally, the Shandong power grid was taken as an example to verify the results that the proposed method could effectively evaluate the multi-infeed high voltage direct current simultaneous commutation failure, and it was important in the early planning of the high voltage direct current transmission system and ensuring the stability and security of the power system.

Key words: multi-infeed HVDC, simultaneous multi-HVDC commutation failures, synchronous condenser, multi-infeed interaction factor, commutation failure estimate factor

中图分类号: 

  • TM721.1

图1

山东电网交直流馈入示意图"

表1

山东直流系统CFEF"

直流名称昭沂低端昭沂高端鲁固低端鲁固高端银东直流
CFEF0.103 10.104 50.165 60.164 20.145 7

表2

未加装调相机山东直流系统MIIF"

待评估直流故障直流
沂南智圣鸢都青州胶东
临特—0.355 670.264 280.571 400.433 38
智圣0.295 72—0.304 440.534 860.349 55
鸢都0.211 110.292 54—0.442 330.352 02
青州0.243 340.273 640.235 73—0.262 29
胶东0.215 510.208 940.219 100.306 58—

表3

加装调相机山东直流系统MIIF"

待评估直流故障直流
沂南智圣鸢都青州胶东
临特—0.355 190.263 320.570 020.432 20
智圣0.293 60—0.302 190.531 140.346 85
鸢都0.210 440.292 21—0.441 260.351 11
青州0.242 830.273 430.235 14—0.261 52
胶东0.215 110.208 730.218 640.305 85—

图2

智圣故障后山东直流系统运行情况"

表4

山东直流系统仿真结果"

待评估直流故障直流
沂南智圣昌乐青州胶东
昭沂——换相失败换相失败换相失败
鲁固换相失败换相失败——换相失败
银东换相失败换相失败换相失败换相失败—
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