一种不停电自动快速调电装置二次回路的研究

Study of the Secondary Circuit of Automatic and Fast Power Dispatching Device without Interruption

随着电力系统500 k V网架的加强及地区220 k V电网规模的不断扩大,220 k V电网分层分区运行成为电网发展的必然。在500 k V、220 k V电磁环网开环运行方式下,110 k V变电站或线路存在跨片区分列运行的方式。当隶属于不同分区的110 k V变电站合环操作时,环流过大可能引起设备过载甚至开关跳闸。为避免这种情况的发生,传统合环方式一般采用先断后通原则进行操作,将造成用户短时停电,影响供电连续性。为了解决以上问题,需要研究电网开环运行方式下不停电自动快速调电装置。不停电自动快速调电装置的二次回路涉及模拟量采集、开关量输入和开关量输出等部分。为保证它的动作的可靠性,需要研究其二次回路应满足的技术要求。

With the enhancement of 500 k V grid in power system and the enlargement of 220 k V grid scale, the 220 k V grid operation is the necessity of power grid development. Under the open loop operation of 500 k V and 220 k V electromagnetic ring network, 110 k V substations or lines have a cross section running mode. When the 110 k V substations belong to different partitions, the circulation is too large to cause equipment overload and even switch tripping. In order to avoid this happening, the traditional loop closing operation usually adopts the principle of first break and back pass, which will cause users to cut off power for a short time and affect the continuity of power supply. In order to solve the above problems, it is necessary to study the automatic and fast automatic power regulation device under the open loop operation of the power grid. The two circuits of the automatic and fast automatic power control device are involved in the analog acquisition, the input of the switch quantity, the output of the switch quantity and so on. In order to ensure the reliability of the operation, the technology of the secondary circuit should be studied. Requirement