10 kV配电变压器经济运行方式的可行性及经济性分析

针对农村和城市小区的变压器长时间处于空载和轻载状态导致损耗增大的问题,提出了一种变压器组优化经济运行方案。以变压器实时负荷为主要控制参量优化组合变压器组的投切运行,采用电压互感器取能方案解决配电线路停运后变压器高低压侧断路器操作机构的取能问题(冷启动),保证了供电的及时性和变压器的自动投切。并以某小区变电箱内两台变压器组为例,定量分析了优化运行的经济效益,最后通过数字仿真验证了所提方案的可行性。

Feasibility and Economic Efficiency Analysis of Economic Operation Mode for 10 kV Distribution Transformer

As the transformers of rural and urban area are often in the state of no-load and light load, the power losses of system increase. This paper proposes a scheme to optimize the economic operation of a transformer unit. The switching of combined transformer unit is optimized by taking the real-time load of the transformer as the main control parameters. And then the voltage transformer is designed to provide energy for operating mechanism of circuit breaker on the high and low voltage side of the transformers when the distribution line is on the state of outage. In this method, the timeliness of the power supply and the automatic switching of the transformer are ensured. Finally, the feasibility of the design is verified by analyzing the economic benefits of two transformers in the transformer unit in a residential area.