电力系统保护与控制Issue(19)：132-139,8.
大电网在线动态安全评估系统电网模型特性分析
Study of the characteristics of grid model for online dynamic security assessment system in bulk power systems
丁平 1徐友平 2汪剑波 2黄羽鹏 3王俊梅 4高波 1陆俊 1严剑峰 1于之虹1
作者信息
- 1. 中国电力科学研究院,北京,100192
- 2. 华中电力调控分中心,湖北 武汉,430000
- 3. 中国长江三峡集团公司,湖北 宜昌,443002
- 4. 重庆市电力公司,重庆,400014
- 折叠
摘要
Abstract
Two main characteristics of grid model in data of on line dynamic security assessment system for bulk power system are pointed out, which include loads hanging on 220 kV buses and equating generators, in which booster transformer’s highest voltage level is 110 kV, (110 kV generators for short), into load of constant impedance. Their impacts on the following analysis and calculation are expounded and proved. It is found that the dynamic stability of large disturbances varies with the fault position and grid's status, the oscillation mode related to the 110 kV generators is eliminated in the small signal stability analysis, and the calculation value of short-circuit current is smaller based on the style of case, but for the calculation value of short-circuit current based on the power flow, it is larger due to loads equivalents while smaller due to generations equivalents. The conclusions are validated by operation data of Huazhong grid with Power System Analysis Software Package (PSASP).关键词
在线动态安全评估/电网模型/大扰动动态稳定/小扰动动态稳定/短路电流Key words
online dynamic security assessment/grid model/dynamic stability of large disturbances/dynamic stability of small disturbances/short-circuit current分类
信息技术与安全科学引用本文复制引用
丁平,徐友平,汪剑波,黄羽鹏,王俊梅,高波,陆俊,严剑峰,于之虹..大电网在线动态安全评估系统电网模型特性分析[J].电力系统保护与控制,2013,(19):132-139,8.
