考虑电压和热稳定约束的可利用传输能力的快速算法

在现代电力市场环境,可利用传输能力(ATC)需要尽快提供给使用方。而在计算中要考虑的所有N-1故障因素导致了ATC计算任务非常繁重。基于此,提出了一种应用故障过滤与排序技术的ATC快速计算方法。首先,采用迭代线性潮流法(ILPF)对电网的N-1故障进行排序以筛选出热稳定极限和电压幅值约束条件下最严重的故障情况;然后,应用原始-对偶内点法对最严重故障情况进行ATC的计算,解决了ATC计算的耗时问题。算法的有效性通过IEEE30母线系统的仿真得到了验证。

A fast computation method for available transfer capability based onvoltage and thermal constraints

In the circumstances of modern deregulation,Available Transfer Capability(ATC) must be provided to the consumers as quickly as possible,while it is a big burden to compute ATC because of taking account of all N-1 outage contingencies.Therefore,this paper proposes a fast computation method to obtain the exact solutions of ATC by means of contingency screening technique.First,the Iterative Linear AC Power Flow(ILPF) method is used for screening the N-1 contingency throughout the network to identify the severest contingency cases with respect to the thermal and voltage magnitude limits,and the Primal-Dual Interior Point Method(PDIPM) is used to obtain the exact solutions of ATC according to the results of contingency screening.The proposed computation method reduces the execution time of computing ATC.The effectiveness of the proposed method is demonstrated through IEEE 30 bus systems.