陈庆;周海强;朱斌;苏大威;钱礼明;鞠平;徐春雷;张琦兵;

• 1:江苏省电力公司
• 2:河海大学能源与电气学院

摘要(Abstract)：

系统失去大功率电源后,要保持暂态稳定并过渡到新的稳态运行点,此时有可能需要补充一定量的减负荷控制,以消除断面超供、备用不足、频率偏低等问题。为降低减负荷控制的经济代价,同时使各负荷中心事故评级尽量均衡,提出了协调经济性及事故评级的紧急减负荷控制优化方法。首先,进行计及电网频率变化的增广潮流计算,并据此分析减负荷控制对系统静态运行点、频率及备用水平的影响;接着,以归一化的经济代价及减负荷率均衡性指标的加权和为目标函数,在考虑电压、支路潮流、频率偏移等约束的基础上,构建紧急减负荷控制优化问题的数学模型;然后,引入罚函数,将其转化为仅含潮流等式约束的优化问题,并应用改进粒子群算法求出最优减负荷率;最后,以IEEE 10机39节点系统为例,分析了失去大功率电源后受端系统的减负荷协调优化控制。结果表明,与常见的最小经济代价及等切负荷率控制方案相比,协调优化控制不仅经济代价较小,且事故评级相对均衡,具有较好的综合性能。

关键词(KeyWords)： 减负荷;事故评级;增广潮流计算;协调优化控制;改进粒子群算法

Abstract:

Keywords:

基金项目(Foundation): 国家电网公司科技项目资助(SGJS0000DKJS1501031)~~

作者(Author): 陈庆;周海强;朱斌;苏大威;钱礼明;鞠平;徐春雷;张琦兵;

Email:

DOI: 10.13335/j.1000-3673.pst.2016.04.010

参考文献(References)：

• [1]王建明,孙华东,张健,等.锦屏—苏南特高压直流投运后电网的稳定特性及协调控制策略[J].电网技术,2012,36(12):66-70.Wang Jianming,Sun Huadong,Zhang Jian,et al.Stability characteristics and coordinated control strategy of interconnected grid integrated with UHVDC transmission line from Jinping to Sunan[J].Power System Technology,2012,36(12):66-70(in Chinese).
• [2]郑传材,管霖.云广特高压直流故障特性及其强迫停运对受端系统影响评估[J].电网技术,2012,36(1):32-38.Zheng Chuancai,Guan Lin.Assessment on fault characteristics of Yunnan to Guangdong UHVDC transmission and the influence of forced outage on power system at receiving end[J].Power System Technology,2012,36(1):32-38(in Chinese).
• [3]刘晓明,刘玉田,邱夕兆.±600 k V银东直流闭锁后的紧急切负荷决策[J],电力自动化设备,2012,32(4):96-99.Liu Xiaoming,Liu Yutian,Qiu Xizhao.Emergency load shedding after Yindong 660 k V DC block fault[J],Electric Power Automation Equipment,2012,32(4):96-99(in Chinese).
• [4]徐泰山,李峰,张建新,等.各类紧急减负荷控制的在线风险评估和协调决策方案[J].电力系统自动化,2015,39(20):91-96.Xu Taishan,Li Feng,Zhang Jianxin,et al.Online risk assessment and coordinated decision scheme for emergency load shedding control[J].Automation of Electric Power Systems,2015,39(20):91-96(in Chinese).
• [5]袁季修.防止电力系统频率崩溃的紧急控制[J].电力自动化设备,2002,22(4):1-4.Yuan Jixiu,Emergency control for preventing frequency collapse of power system[J].Electric Power Automation Equipment,2002,22(4):1-4(in Chinese).
• [6]梁志峰,葛睿,董昱,等.印度“7×30”、“7×31”大停电事故分析及对我国电网调度运行工作的启示[J],电网技术,2013,37(7):1841-1848.Liang Zhifeng,Ge Rui,Dong Yu,et al.Analysis of large-scale blackout occurred on July 30 and July 31,2012 in India and its lessons to China’s power grid dispatch and operation[J],Power System Technology,2013,37(7):1841-1848(in Chinese).
• [7]张执超,王增平,方攀宇.基于频率和电压稳定的紧急控制策略研究[J],电力系统保护与控制,2013,41(3):149-159.Zhang Zhichao,Wang Zengping,Fang Panyu.Emergency control strategy based on frequency and voltage stability[J].Power System Protection and Control,2013,41(3):149-159(in Chinese).
• [8]吴军,涂光瑜,罗毅,等.电力系统分层紧急负荷控制[J].电力系统自动化,2006,30(20):26-31.Wu Jun,Tu Guangyu,Luo Yi,et al.Hierarchical load emergency control of power system[J].Automation of Electric Power Systems,2006,30(20):26-31(in Chinese).
• [9]徐珊,刘文颖,唐哲,等.基于功率缺额灵敏度分析的切负荷算法[J],中国电力,2009,42(2):9-12.Xu Shan,Liu Wenying,Tang Zhe,et al.A load shedding method based on the power vacancy sensitivity analysis[J].Electric Power,2009,42(2):9-12(in Chinese).
• [10]王刚,张雪敏,梅生伟,等.基于逐次优化的电力系统紧急切负荷算法[J].清华大学学报:自然科学版,2009,49(7):927-931.Wang Gang,Zhang Xuemin,Mei Shengwei,et al.Emergency load shedding algorithm for power systems based on successive optimization[J].Journal of Tsinghua University:Sci&Tech,2009,49(7):927-931(in Chinese).
• [11]武鹏,程浩忠,屈刚.电网规划中区间最小切负荷量的计算方法[J].中国电机工程学报,2008,28(22):41-46.Wu Peng,Cheng Haozhong,Qu Gang.Algorithm to solve interval minimum load cutting problem for transmission planning[J].Proceedings of the CSEE,2008,28(22):41-46(in Chinese).
• [12]中华人民共和国国务院.电力安全事故应急处置和调查处理条例[EB/OL].2011-07-15[2015].Http://www.gov.cn/zwgk/2011-07/15/content_1906887.htm.
• [13]赵强,张丽,王琦,等.系统负荷频率特性对电网频率稳定性的影响[J].电网技术,2011,35(3):69-73.Zhao Qiang,Zhang Li,Wang Qi,et al.Impact of load frequency characteristics on frequency stability of power systems[J].Power System Technology,2011,35(3):69-73(in Chinese).
• [14]张伯明,陈寿孙,严正.高等电力网络分析[M].2版.北京:清华大学出版社,2007:246-248.
• [15]燕萍.计及频率变化的电力系统仿真潮流程序[J].华东电力,1994(7):13-16.Yan Ping.The simulation program with consideration of frequency variation for power system[J].East China Electric Power,1994(7):13-16(in Chinese).
• [16]李生虎,贾树森,孙莎莎.交直流系统中低频减载与负荷恢复的静态优化算法[J].电网技术,2011,35(7):71-75.Li Shenghu,Jia Shusen,Sun Shasha.A static optimization algorithm of under frequency load shedding and load recovery for AC/DC power systems[J].Power System Technology,2011,35(7):71-75(in Chinese).
• [17]诸骏伟,电力系统分析(上册)[M].北京,电力出版社,1994:54-60.
• [18]杨玲玲,马良.非线性规划的混沌粒子群优化算法[J].计算机技术与发展,2012,22(10):15-17.Yang Lingling,Ma Liang.A chaos particle swarm optimization algorithm for nonlinear programming problem[J].Computer Technology and Development,2012,22(10):15-17(in Chinese).
• [19]Zimmerman R D,Murillo-Sánchez C E,Thomas R J.MATPOWER:steady-state operations,planning and analysis tools for power systems research and education[J].IEEE Transactions on Power Systems,2011,26(1):12-19.