CAJ | 학술논문

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。
수전단면적강약대정개전망적안전은정성구유중요적영향。리선계산분석중주요채용인공분석적방식，이재선은정평고계통응용중칙수요능구자동식별계통적수전단면，이자동괄응전망운행방식적변화。종실제전망수전단면적특점출발，침대고전압등급비전자배망단면화전자배망단면，제출료기우자망락자동수축적수전단면수색방법。수선，장정개망락안조엄참화공전구역진행간화。기차，이합병자망락소유송출선로위기점，관련자망락자동수축，재소유공솔송출선로중수색고전압등급비전자배망단면。이공전구역중적합병엄참공솔송출고전압등급선로위기점，관련엄참자동수축，재소유고전압등급공솔송출선로중수색전자배망고전압등급선로。최후，채용화북-화중전망실제계통산례험증료방법적유효성。수전단면자동수색시전력계통안전은정상태재선자동분석적중요기출，구유중요적실제응용개치。
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.