计及功率平衡含风电的发电系统可靠性评估

doi:10.11930/j.issn.1004-9649.2017.06.146.06

中国电力 ›› 2017, Vol. 50 ›› Issue (6): 146-151.DOI: 10.11930/j.issn.1004-9649.2017.06.146.06

计及功率平衡含风电的发电系统可靠性评估

卢佳

太原工业学院,山西太原 030008

收稿日期:2016-12-08 出版日期:2017-06-20 发布日期:2017-07-12
作者简介:卢佳（1980-）,女,山西保德人,硕士,讲师,从事电力系统稳定分析及新能源研究。E-mail: lujia@126.com

Reliability Evaluation of Power Generation System with Wind Power and Reactive Power Balance

LU Jia

Taiyuan Institute of Technology, Taiyuan 030008, China

Received:2016-12-08 Online:2017-06-20 Published:2017-07-12

摘要/Abstract

摘要： 建立了风电场可靠性评估模型,研究了无功功率对含风电场的发电系统可靠性评估的影响,介绍了有功功率短缺、无功功率短缺和电压越限对电力系统可靠性的影响,利用故障重数截止法对系统状态进行筛选,采用三级切负荷策略分别从有功功率和无功功率2方面分析其可靠性问题。根据第三级切负荷策略可确定最佳无功补偿位置,应用就地无功补偿代替负荷切除可有效解决电压越限问题。研究了基于风电功率调整的最大消纳能力情况下的系统可靠性问题,确定了风电接入对系统可靠性的最大贡献。最后以某地区220 kV系统为算例,验证了所提策略的有效性。

关键词: 风电, 无功平衡, 可靠性评估, 电压越限, 三级切负荷, 无功补偿

Abstract: The reliability evaluation model of wind farm is established. The influence of reactive power on the reliability assessment of power systems with wind farms is analyzed. The influence ofactive power shortage, reactive power shortage and voltage violation on power system reliability are introduced. Filtered by fault cutoff method, three stages of load-shedding strategies are adoptedin reliability analysis from both active and reactive power aspects. The third stage load shedding strategy has ability to determine the best location for reactive power compensation. The voltage violation can be reduced effectively by changingload shedding tolocal reactive power compensation.System reliability is analyzed based on maximum absorptive capacity of wind power integration. Calculation results on a 220 kV system validates proposed strategy.

Key words: reactive power balance, reliability assessment, three load shedding, reactive power compensation

中图分类号:

TM614

卢佳. 计及功率平衡含风电的发电系统可靠性评估[J]. 中国电力, 2017, 50(6): 146-151.

LU Jia. Reliability Evaluation of Power Generation System with Wind Power and Reactive Power Balance[J]. Electric Power, 2017, 50(6): 146-151.

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计及功率平衡含风电的发电系统可靠性评估

Reliability Evaluation of Power Generation System with Wind Power and Reactive Power Balance

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