摘要
提出了考虑频率特性和断面传输有功功率约束的潮流模型。该模型在考虑频率电压调节特性的潮流方程基础上,增加了断面传输有功功率方程,并对互联区域两端的平衡机组增加了有功调节变量及其控制方程。其中,平衡机组的调节功率等于其所在控制区的区域控制偏差(area control error,ACE)、有功网损偏差和超短期预测有功负荷偏差之和。通过对IEEE 118节点测试系统的仿真分析,验证了新模型的必要性和有效性,同时结果也表明所建模型能够有效提高频率和断面传输有功的控制水平。
A power flow model, in which both frequency characteristic and constraint of active power transmitted via tie line are considered, is proposed. Based on power flow equations, in which both regulation characteristics of frequency and voltage are considered, the equation of active power transmitted via tie line is added to the proposed model, and the active power regulation variable and its control equation are added to the power-balancing units located at both ends of the interconnected power grid, and the regulating power of the balancing units are equal to the sum of the area control error （ACE）, the active network loss error and the ultra-short forecasted active power error in the controlled area where the power-balancing units located. The necessity and effectiveness of the proposed model are validated by simulation results of IEEE 118-bus test system, meanwhile, simulation results also show that the proposed model can effectively improve the control level of frequency and the active power transmitted via tie line.
出处
《电网技术》
EI
CSCD
北大核心
2015年第1期236-241,共6页
Power System Technology
基金
国家自然科学基金资助项目(51177178)~~
关键词
互联电力系统
潮流计算
频率特性
断面传输有功功率约束
interconnected power system power flow calculation frequency characteristics constraint of active power transmitted via tie line
