南方电网技术2015，Vol.9Issue(6)：75-79,5.DOI:10.13648/j.cnki.issn1674-0629.2015.06.013
基于参数优化的交流系统短路电流计算方案
AC Short-Circuit Current Calculation Scheme Based on Parameter Optimization
张帆 1赵勇 1苏寅生 2李智欢 2杨银国3
作者信息
- 1. 南方电网科学研究院, 广州510080
- 2. 中国南方电网电力调度控制中心, 广州510623
- 3. 广东电网电力调度控制中心, 广州510620
- 折叠
摘要
Abstract
In view of unreasonable and even often optimistic assessment of power system short-circuit current, based on analysis of basic principles of AC short-circuit current calculation, from the perspective of result modification, a set of short-circuit current calcu-lation scheme is provided. Firstly, a linear modification formula to calculate the short-circuit current, including the coefficient of cur-rent correction K and the deviation of current ΔI is given;and then the optimization principles and the objective function for determi-ning the above two parameters based on actual short-circuit faults are proposed, which can promise the calculating results with high precision under the premise of not lower than measured values. Application of this scheme to actual short-circuit current evaluation of CSG reveals that, compared with existing schemes, the proposed scheme promises the results with conservation and precision, and can be regarded as an effective supplement for short-circuit current calculating tools.关键词
短路电流计算/周期性分量/线性修正/参数优化/短路故障Key words
short-circuit current calculation/periodic component/linear modification/parameter optimization/short-circuit faults分类
信息技术与安全科学引用本文复制引用
张帆,赵勇,苏寅生,李智欢,杨银国..基于参数优化的交流系统短路电流计算方案[J].南方电网技术,2015,9(6):75-79,5.
