| 引用本文: | 潘学萍,李乐,黄华,颜君凯,杨洛.综合灵敏度和静态电压稳定裕度的直流受端交流系统电压薄弱区域评估方法[J].电力自动化设备,2019,39(3): |
| PAN Xueping,LI Le,HUANG Hua,YAN Junkai,YANG Luo.Method for evaluating voltage weak area of AC power system at DC receiving end considering sensitivity and static voltage stability margin[J].Electric Power Automation Equipment,2019,39(3): |
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| 摘要: |
| 提出综合无功-电压灵敏度与静态电压稳定裕度的直流受端交流系统电压薄弱区域评估方法，并在灵敏度及静态电压稳定计算中计及了负荷静态电压特性。以计及负荷静态电压特性的交直流电力系统潮流方程为基础，计算交流节点电压相对于直流落点无功功率的灵敏度；基于连续潮流法，计算计及负荷静态电压特性的直流受端交流系统静态电压稳定裕度，综合这2个指标识别电压薄弱区域。并进一步地比较了不同ZIP负荷占比、不同直流控制方式对直流落点近区交流系统电压薄弱区域评估的影响。 |
| 关键词: 交直流互联电力系统 无功-电压灵敏度 静态电压稳定裕度 负荷静态电压特性 电压薄弱区域 |
| DOI：10.16081/j.issn.1006-6047.2019.03.001 |
| 分类号:TM712 |
| 基金项目:智能电网与保护国家重点实验室开放课题 |
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| Method for evaluating voltage weak area of AC power system at DC receiving end considering sensitivity and static voltage stability margin |
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PAN Xueping1, LI Le1, HUANG Hua2, YAN Junkai1, YANG Luo2
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1.College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China;2.NARI Group Corporation(State Grid Electric Power Research Institute),Nanjing 211106, China
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| Abstract: |
| A method for evaluating voltage weak area of AC power system at DC receiving end considering both reactive-voltage sensitivity and static voltage stability margin is proposed, and the static voltage characteristics of load are considered during the calculation of sensitivity and static voltage stability. Firstly, the sensitivity of voltage at AC node to reactive power at DC node is calculated based on power flow equation of AC/DC power system, in which the load static voltage characteristics of load are considered. Secondly, the static voltage stability margin considering the load static voltage characteristics is calculated based on the continuation power flow. Finally, the voltage weak area of AC power system at DC receiving end is evaluated by reactive-voltage sensitivity combing with static voltage stability margin. Furthermore, the effects of different ZIP load ratios and DC control ways on evaluating voltage weak area of AC power system at DC receiving end are compared. |
| Key words: AC/DC interconnected power system reactive-voltage sensitivity static voltage stability margin static voltage characteristics of load voltage weak area |
