暂态能量函数法用于可靠性安全性评估

Transient energy function algorithm for reliability security evaluation

针对可靠性安全性评估计算复杂和计算速度慢 ,提出了基于 Monte- Carlo模拟法和暂态能量函数法相结合的评估可靠性安全性评估的方法 ,定义了相应可靠性指标。充裕度评估和安全性评估是发输电合成系统可靠性分析的两个方面 ,充裕度是在静态条件下电力系统满足用户电力和电能量的能力 ,安全性是在动态条件下电力系统经受住突然扰动并不间断地向用户提供电力和电能量的能力。论文提出了将充裕度评估和安全性评估相结合进行可靠性分析的模型、算法和计算步骤 ,并编写了相应程序。算例表明 ,该模型和算法是可行的 。

A reliability security evaluation algorithm is proposed based on Monte Carlo simulation and the transient energy function. Indices are defined to describe the reliability security. The reliability assessment of composite power system consists of adequacy and security evaluations. The adequacy evaluation describes the static performance of the power system based on the power flow calculation, while the security is the ability of the system to withstand disturbances analyzed using the transient analysis. A new reliability evaluation algorithm combining adequacy and security is presented. The validity of the algorithm is verified by the numerical results for a sample system with 4 generators and 11 buses.