| 引用本文: | 侯俊贤,韩民晓,董毅峰,等.基于子网络收缩的输电断面搜索方法[J].电力系统保护与控制,2015,43(12):92-97.[点击复制] |
| HOU Junxian,HAN Minxiao,DONG Yifeng,et al.Transmission section searching method based on power system sub-network combination[J].Power System Protection and Control,2015,43(12):92-97[点击复制] |
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| 摘要: |
| 输电断面的强弱对整个电网的安全稳定性具有重要的影响。离线计算分析中主要采用人工分析的方式，而在线稳定评估系统应用中则需要能够自动识别系统的输电断面，以自动适应电网运行方式的变化。从实际电网输电断面的特点出发，针对高电压等级非电磁环网断面和电磁环网断面，提出了基于子网络自动收缩的输电断面搜索方法。首先，将整个网络按照厂站和供电区域进行简化。其次，以合并子网络所有送出线路为起点，关联子网络自动收缩，在所有功率送出线路中搜索高电压等级非电磁环网断面。以供电区域中的合并厂站功率送出高电压等级线路为起点，关联厂站自动收缩，在所有高电压等级功率送出线路中搜索电磁环网高电压等级线路。最后，采用华北-华中电网实际系统算例验证了方法的有效性。输电断面自动搜索是电力系统安全稳定状态在线自动分析的重要基础，具有重要的实际应用价值。 |
| 关键词: 输电断面 电磁环网 断面搜索 在线稳定评估 电力系统 |
| DOI：10.7667/j.issn.1674-3415.2015.12.015 |
| 投稿时间：2014-09-10修订日期：2014-12-29 |
| 基金项目: |
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| Transmission section searching method based on power system sub-network combination |
| HOU Junxian,HAN Minxiao,DONG Yifeng,WANG Yi,BU Guangquan |
| (North China Electric Power University, Beijing 102206, China;China Electric Power
Research Institute, Beijing 100192, China) |
| Abstract: |
| The stability of transmission section has great influence on whole power system stability. In offline simulation, the transmission section analysis is mainly analyzed by person. However, it should be analyzed automatically in order to suitable for power system network change when used in online stability assessment. Based on the characteristic of actual power system, the paper presents a transmission section automatic identification method based on sub-network combination, and the types of transmission line include high voltage electromagnetic loop section and non-electromagnetic loop section. Firstly, the whole power network is simplified according to substation and power supply area; then, starting from one subnet and considering one or more subnets automatic combination, the high voltage non electromagnetic loop sections are found from all the power out lines of one or more subnet; starting from one high voltage substation of power supply area and considering one or more substation automatic combination, the high voltage lines of electromagnetic loop sections are found from all the power out lines of one or more substation. Finally, the north China and central China interconnected power system is used to verify the validity of the method. The transmission section searching is an important basis of online power system stability assessment and has great practical application value. |
| Key words: transmission section electromagnetic loop section searching online stability assessment power system |
