基于N-1原则的输电断面传送功率能力分析

输电断面传送功率能力分析是电力系统的一个重要研究课题,文中依据电网分析中广泛采用的N-1原则,研究了输电断面潮流在N-1静态安全约束下的传输功率能力,建立了断面传输功率约束的详细数学模型以及基于直流潮流的简化模型并给出了求解方法,特别针对复杂大规模互联电网建立了交流潮流与有功功率约束相结合的实用模型,并给出了以电力系统分析综合程序(PSASP)和用户程序接口(UPI)为计算工具的算法.通过实际系统中的算例表明,该方法简捷、可靠,能够满足实际电网分析计算需要,具有实用价值.

ANALYSIS OF NETWORK TRANSMISSION CAPABILITY BASED ON N-1 PRINCIPLE

The analysis of transmission capability of network transmission interface is an important issue. This paper studies the transmission capability of network transmission interface under steady state security restriction with N-1 principle and sets up the detailed mathematical model of the power flow restriction on network transmission interface. The simplified model based on the DC power flow and the resolving method are also presented. Especially, on the basis of the complicated large-scale interconnected network, this paper provides the practical model combining the AC power flow with real power restriction .and presents an algorithm, which adopts PSASP and UPI as the calculating tools. The calculation examples of the actual system show that this method is novel, reliable, practical and competent for the actual system analysis.