3/2接线方式同期回路改造

针对许多3/2接线方式的变电站采用旧的同期装置及同期回路在并网时出现的同期问题，分析了问题的主要原因，并通过简化原同期切换回路中刀闸辅助触点串联回路或串联逻辑，提出了3/2接线方式下新的同期电压切换回路和同期装置改善措施，使得3/2接线方式的变电站同期操作趋于合理、完善、安全。

Alteration concurrent loop of 3/2 connection mode in bus-connection system

By introducing the condition of the old concurrent switch equipments used in many 3/2 electrical connection mode in substation and the problem of the concurrent switch loop while the grid-connection, this paper analyzes the main courses. It also predigests the series loop or the series logic of the isolator switch accessorial connection point in the older concurrent switch loop, and puts forward a new concurrent switch loop and some amelioration measures of the switch equipments. In this way ,the concurrent...