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山东电网投运了电网电量计量系统 ,电厂侧的关口电能表移到了电厂的出线或主变高压侧。由于电能计量回路没有监控设备 ,电厂的关口电能表和计量回路有了故障不能及时发现 ,故研制了电厂关口表监控报警装置。该监控报警装置使用了辅助信号采集模块 ,它由主机 (工控机 )和采集模块 2部分组成。该装置在山东莱城电厂进行了现场试验 ,试验结果表明 :采用采集模块后 ,对电能计量装置二次回路压降的影响可忽略不计。已有 9家发电厂安装了该装置的Ⅲ、IV型机 ,运行状态良好
Shandong Power Grid put into operation the grid electricity metering system, power plant side of the pass meter moved to the power plant outlet or main transformer high-pressure side. Because there is no monitoring device for the energy metering circuit, the power meter and the metering circuit of the power plant can not be found in time, so a monitoring and warning device for the power plant gateway has been developed. The monitoring alarm device uses the auxiliary signal acquisition module, which consists of the host (IPC) and acquisition module 2 parts. The device was tested in Shandong Laicheng Power Plant. The experimental results show that the impact of the secondary circuit voltage drop of the energy metering device is negligible after the acquisition module is adopted. There are nine power plants installed the device Ⅲ, IV-type machine, running in good condition