Abstract—Industrial Energy Measurement System (IEMS) used for measurement of electrical energy consumed by high-tension industrial consumers. It consists of three current transformers (CTs) and three potential transformers (PTs). Cost of IEMS increases with improvement in its accuracy class. The contribution of this article is that, it adduces design and development of high accuracy class and cost-effective IEMS. To accomplish this, a novel Industrial Energy Measurement-Error Compensation Unit (IEM-ECU) is proposed. To realize this, first, the three different accuracy classes, viz. 0.2, 0.5, and 1.0 IEMS are fabricated in the laboratory. Characteristics of every CT and PT are determined. Second, the proposed error correction algorithm is implemented in real time to improve errors of IEMS. Finally, the experimental results are depicted in LabVIEW for mixed class of CTs and PTs. Various experimental tests have been performed and results are validated by comparing the results obtained from digital storage oscilloscope. These results clearly illustrate that the proposed IEM-ECU not only convert lower accuracy class IEMS to higher accuracy class but it also gives flexibility to use available class of CTs and/or PTs, if required under contingency. Thereby, considerable cost savings can be achieved as the performance of lower accuracy class matches with the higher accuracy class.

中文翻译：

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工业电能计量误差补偿装置的设计与开发

摘要—工业能源测量系统 (IEMS) 用于测量高压工业消费者消耗的电能。它由三个电流互感器 (CT) 和三个电压互感器 (PT) 组成。IEMS 的成本随着其精度等级的提高而增加。本文的贡献在于，它引入了高精度等级和高性价比IEMS的设计和开发。为此，提出了一种新型工业能源测量误差补偿单元 (IEM-ECU)。要实现这一点，首先，三个不同的精度等级，即。0.2、0.5 和 1.0 IEMS 在实验室制造。确定每个 CT 和 PT 的特性。其次，实时实施所提出的纠错算法以改善IEMS的错误。最后，实验结果在 LabVIEW 中描述为 CT 和 PT 的混合类。已经进行了各种实验测试，并通过比较从数字存储示波器获得的结果来验证结果。这些结果清楚地表明，所提出的 IEM-ECU 不仅将较低精度等级的 IEMS 转换为较高精度等级，而且如果在紧急情况下需要，它还可以灵活地使用可用等级的 CT 和/或 PT。因此，由于较低精度等级的性能与较高精度等级相匹配，因此可以实现可观的成本节约。这些结果清楚地表明，所提出的 IEM-ECU 不仅将较低精度等级的 IEMS 转换为较高精度等级，而且如果在紧急情况下需要，它还可以灵活地使用可用等级的 CT 和/或 PT。因此，由于较低精度等级的性能与较高精度等级相匹配，因此可以实现可观的成本节约。这些结果清楚地表明，所提出的 IEM-ECU 不仅将较低精度等级的 IEMS 转换为较高精度等级，而且如果在紧急情况下需要，它还可以灵活地使用可用等级的 CT 和/或 PT。因此，由于较低精度等级的性能与较高精度等级相匹配，因此可以实现可观的成本节约。