适合风雨气候的电力系统风险评估模型与方法

莫若慧; 左俊军; 龙裕芳; 兰飞; 胡剑琛; 李献; 吴锋; 祁永福; 吴云亮

doi:10.3969/j.issn.1000-7229.2015.02.004

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电力建设 ›› 2015, Vol. 36 ›› Issue (2) : 21-26. DOI: 10.3969/j.issn.1000-7229.2015.02.004

理论研究

适合风雨气候的电力系统风险评估模型与方法

莫若慧1，左俊军2，龙裕芳2，兰飞2，胡剑琛1，李献1，吴锋1，祁永福1，吴云亮1

作者信息 +

Risk Assessment Model and Method of Power System in Storm Climate

MO Ruohui1, ZUO Junjun2, LONG Yufang2, LAN Fei2, HU Jianchen1, LI Xian1, WU Feng1, QI Yongfu1, WU Yunliang1

Author information +

文章历史 +

摘要

建立了风雨气候的电力系统风险评估模型，弥补了传统风险评估模型中忽略风雨气候影响使评估结果过于乐观的不足。采用最优交流潮流模型计算系统切负荷量，在得到最小切负荷量的同时，可评估系统低电压风险，解决了传统方法用直流潮流模型无法直接评估节点低电压风险的问题。利用最优潮流模型求取系统切负荷量，有效改善由于潮流计算不收敛，而导致无法得到切负荷量或切负荷量计算不准确的问题。最后利用该方法对改造后的IEEE-RT79系统进行计算，结果表明该方法有效可行。对改造后的系统进行线路过载和低电压风险评估，评估结果可以为风雨气候条件下电网的规划及运行提供参考依据。

Abstract

This paper established a risk assessment model for power system in storm climate, to make up the weakness of traditional risk assessment that the model ignored the climate impact of wind and rain so that assessment results were too optimistic. The optimal AC power flow model was used to calculate the system load shedding, obtain the minimum load shedding and assess the low voltage risk of system, which could effectively improve the problem in traditional DC power flow model that the low voltage risk of nodes could not be directly assessed. The system load shedding was obtained with using optimal power flow, which could effectively improve the problem that the power flow calculation did not converge so that the load shedding could not be obtained or the calculation of the load shedding was inaccurate. Finally, this method was used to calculate the modified IEEE-RT79 system. The results show that the proposed method is effective and feasible. Meanwhile, the overload risk and low voltage risk of modified system were assessed, whose results could provide a reference basis for the planning and operation of power grid in storm climate.

导出引用

莫若慧，左俊军，龙裕芳，兰飞，胡剑琛，李献，吴锋，祁永福，吴云亮. 适合风雨气候的电力系统风险评估模型与方法[J]. 电力建设. 2015, 36(2): 21-26 https://doi.org/10.3969/j.issn.1000-7229.2015.02.004

MO Ruohui1, ZUO Junjun2, LONG Yufang2, LAN Fei2, HU Jianchen1, LI Xian1, WU Feng1, QI Yongfu1, WU Yunliang1. Risk Assessment Model and Method of Power System in Storm Climate[J]. Electric Power Construction. 2015, 36(2): 21-26 https://doi.org/10.3969/j.issn.1000-7229.2015.02.004

参考文献

[1]王磊，赵书强，张明文．考虑天气变化的输电系统可靠性评估［J］．电网技术，2011，35（7）：66-70．

Wang Lei, Zhao Shuqiang, Zhang Mingwen. Reliability evaluation of transmission system considering weather change［J］. Power System Technology, 2011（7）:66-70.

［2］林智敏，林韩，温歩瀛．天气条件相依失效模型的电力系统可靠性评估［J］．华东电力，2008，36（1）：81-84．

Lin Zhimin, Lin Han, Wen Buying. Power system reliability evaluation based on weather dependent failure models［J］. East China Electric Power, 2008,36（1）:81-84.

［3］Billinton R，Acharya J．Consideration of multi-state weather models in reliabiliy evaluation of transmission and distribution systems［J］．IEEE Transactions on Power Systems，2003，8（40）：619-622．

［4］陈永进，任震，黄雯莹．考虑天气变化的可靠性评估模型与分析［J］．电力系统自动化，2004，28（21）：17-20．

Chen Yongjin, Ren Zhen, Huang Wenying. Model and analysis of power system reliability evaluation construction weather change［J］.Automation of Electric Power Systems,2004,28（21）:17-21.

［5］刘文颖，杨楠，张建立，等．计及恶劣天气因素的复杂电网连锁故障事故链模型［J］．中国电机工程学报，2012，7（32）：53-59,191．

Liu Wenying, Yang Nan, Zhang Jianli, et al. Complex grid failure propagating chain model in consideration of adverse weather［J］. Proceedings of the CSEE, 2012（7）:53-59,191.

［6］张勇军，黄慧，刘洋海，等．含分布式水电的电网雷击风险评估［J］．华南理工大学学报：自然科学版，2011，39（10）： 127-131．

Zhang Yongjun, Huang Hui, Liu Yanghai et al. Lightning strike risk evaluation of power grid with distributed hydropower［J］. Journal of South China University of Technology （Natural Science Edition）, 2011，39（10）:127-131（in Chinese）.

［7］张勇军，许亮，吴成文．计及多因素的电网冰灾风险评估模型研究［J］．电力系统保护与控制，2012，40（15）： 12-16．

Zhang Yongjun, Xu Liang, Wu Chengwen. Research on ice disaster risk evaluation model of power system considering multi-factors［J］. Power System Protection and Control, 2012,40（15）:12-16.

［8］陈为化，罗龙．电力系统线路过载的风险评估与预防控制［J］．华东电力，2008，36（7）：42-45．

Chen Weihua, Luo Long. Risk assessment and preventive control for power system overload［J］. East China Electric Power,2008,36（7）:42-45.

［9］陈为化，江全元，曹一家．基于风险理论的复杂电力系统脆弱性评估［J］．电网技术，2005，29（4）：12-17．

Chen Weihua, Jiang Quanyuan, Cao Yijia, et al. risk-based vulnerability assessment in complex power systems［J］. Power System Technology,2005, 29（4）:12-17.

［10］吴旭，张建华，吴林伟，等．输电系统连锁故障的运行风险评估算法［J］．中国电机工程学报，2012，34（32）：74-82,12．

Wu Xu, Zhang Jianhua, Wu Linwei, et al. Method of operational risk assessment on transmission system cascading failure［J］. Proceedings of the CSEE, 2012,32（34）:74-82,12.

［11］汪隆君，李博，王钢，等．计及电网变化过程的地区电网运行风险评估［J］．电力系自动化，2011，1（35）：18-22．

Wang Longjun, Li Bo, Wang Gang, et al. Operational risk assessment of regional power grid considering developing process［J］. Automation of Electric Power Systems, 2011,35（1）:18-22.

［12］陈曦．基于风险理论的电力系统静态安全性评估方法研究［D］．武汉：华中科技大学，2012．

Chen Xi. A research on power system static security assessment method based on risk theory［J］. Wuhan: Huazhong University of Science ＆ Technology, 2012.

［13］郭永基．电力系统可靠性分析［M］．北京：清华大学出版社, 2003．

［14］李文沅．电力系统风险评估模型、方法和应用［M］．北京：科学出版社，2006．

［15］赵晋泉，叶君玲，邓勇．直流潮流与交流潮流的对比分析［J］．电网技术，2012，36（10）：147-152．

Zhao Jinquan, Ye Junling, Deng Yong. Comparative analysis on DC power flow and AC power flow［J］. Power System Technology,2012,36（10）:147-152.

［16］赵渊，周家启，刘洋．发输电组合系统可靠性评估中的最优负荷削减模型分析［J］．电网技术，2004，10（28）：34-37．

Zhao Yuan, Zhou Jiaqi, Liu Yang. Analysis on optimal load shedding model in reliability evaluation of composite generation and transmission system［J］. Power System Technology, 2004, 28（10）:34-37.

［17］Hua W，Sasaki H，Kubokawa J．An interior point nonlinear programming for optimal power flow problems with A novel data structure［J］．IEEE Transactions on Power Systems，1998，3（13）：870-876．