新型现场计量装置接线检查方法的研究

A New Method for Field Electric Energy Metering Device Line Connecting Detection

电能计量装置的准确性和二次回路的接线正确与否关系到发电厂、电网经营企业和各类用户的经济利益,投运前必须进行测试。接线检查是保证计量准确和接线正确的有效手段,但现场开展计量接线检查工作时面临回路测量点选取困难、自动化程度低、对操作人员主观判断依赖性大、恢复接线时可能产生差错等问题,且存在误判风险。针对上述问题,文中提出一种新型现场计量装置接线检查方法并设计自动测试仪器实现方案,开发样机并分析验证其研制成果。测试验证结果表明,新型现场计量装置自动接线检查测试仪能够满足现场需求。

The accuracy of electric energy metering device and correctness of secondary line connection are related with the economic benefits of electric power plant, electric grid corporation and consumers. Line connection detection is an effective method to ensure metering accuracy and line connection correctness. However, many problems, such as difficulty of selecting measure point, low automation degree, strong dependence to operator＇s subjective judgment, and possible mistake in restoring lines may face with line connecting detection. To solve these problems, a new method and design scheme of field electric energy metering device line connection detection is proposed in this paper. A sample machine is developed using the proposed design. Experiment has been implemented, which approves that the new apparatus can satisfy the need of field work.