Analysis of the error of the developed method of determination the active conductivity reducing the insulation level between one phase of the network and ground, and insulation parameters in a non-symmetric network with isolated neutral with voltage above 1000 V

International Conference "Actual Problem of Electromechanics and Electrotechnology"

无线电电子学;机械制造

Utegulov, B.B.^1

Energy Department, S. Seifullin Kazakh Agro-Technical University, 62 Pobeda avenue, Astana, Kazakhstan^1

关键词: Asymmetric networks;    Electrical networks;    Indirect measurements;    Insulation level;    Measuring instruments;    Neutral voltage;    Relative mean square errors;    Symmetric network;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/313/1/012015/pdf
DOI  :  10.1088/1757-899X/313/1/012015

来源: IOP

【 摘 要 】

In the work the study of the developed method was carried out for reliability by analyzing the error in indirect determination of the insulation parameters in an asymmetric network with an isolated neutral voltage above 1000 V. The conducted studies of the random relative mean square errors show that the accuracy of indirect measurements in the developed method can be effectively regulated not only by selecting a capacitive additional conductivity, which are connected between phases of the electrical network and the ground, but also by the selection of measuring instruments according to the accuracy class. When choosing meters with accuracy class of 0.5 with the correct selection of capacitive additional conductivity that are connected between the phases of the electrical network and the ground, the errors in measuring the insulation parameters will not exceed 10%.