摘要
电能计量装置的运行误差直接对供用电双方贸易结算的准确性产生很大的影响,因此对于电能计量装置的运行状态评价显得尤为重要。本文将电能计量装置分为电能表、电流互感器、电压互感器和二次回路四个部件进行分析,总结了对各个部件运行误差的影响因素。此外,还从电网运行工况的角度对电能计量装置运行误差的影响进行了分析和说明。针对现行电能计量装置周期现场检验的不足,本文提出了新型运行状态评价方法。该方法通过对电能计量装置运行状态进行监测,来获取运行环境下的电压、电流、频率等运行状态数据,结合现场周期检验得到的误差数据,再加上实际电网运行环境对电能计量装置运行状态准确性、可靠性的影响,对其进行综合评价。该方法从各方面提取了多项指标,并制定相应的权重,共同构成状态评价标准。根据状态评价结果,提出相应的电能计量装置检验策略。
The operation errors of the electric energy metering device directly affect the accuracy of the trade settle-ment for both sides of the power supply. So, it is important for state evaluation on the operation of the electric energy metering device. This paper divides the electric energy metering device into four parts：electric energy meter, current transformer, voltage transformer and the secondary loop. The influencing factors on operation errors of each part are summarized. In addition, the influence of power grid operation condition is analyzed and illustrated. Aiming at the shortages of the device test, an new operation state evaluation method is put forward. Based on the operation state of electric energy metering device test, the data of voltage, current, frequency, etc. , can be obtained. Combining with the periodic inspection data, and taking into account influence of the actual power grid operation environment on the accuracy and reliability of the energy metering device, the comprehensive evaluation can be made. A number of indi-cators from all sides and the corresponding weights are chosen and formulated to establish the state evaluation stand-ard. According to the state evaluation results, different inspection strategies are proposed.
出处
《电工电能新技术》
CSCD
北大核心
2014年第5期76-80,共5页
Advanced Technology of Electrical Engineering and Energy
关键词
电能计量装置
运行误差
状态评价
electric energy metering device
operation errors
state evaluation
