Method for testing synthetic measuring error of high tension electric energy metering installation

Abstract

The invention provides a method for testing the integrating measurement error of a measurement device of high-voltage electric energy and comprises the following steps: a pulse collecting and sending equipment is used for implementing the electric energy pulse sampling of an electric energy meter of the measurement device of high-voltage electric energy, and the collected electric energy pulse is sent out immediately through the radio signal representing the electric energy pulse; a radio receiving equipment is used for receiving the radio signal representing the electric energy pulse which is sent by the pulse collecting and sending equipment, restoring the radio signal to the pulse signal, and sending the pulse signal to an on-site testing meter of an AC meter which is connected with the radio receiving equipment; the on-site testing meter of the AC meter implements the voltage and electric current sampling and the electric energy testing on a low-voltage end of an electric transformer; the on-site testing meter of the AC meter computes and displays the integrating measurement error of the measurement device of high-voltage electric energy according to the input parameters which are related to the electric transformer. The method implements the remote sampling and the real-time transmission of the electric energy pulse of the electric energy meter to be tested and achieves the goal that the measured error is closer to be accurate.

Description

technical field [0001] The invention relates to a method for testing a measurement error, in particular to a method for testing a comprehensive measurement error of a high-voltage electric energy metering device. Background technique [0002] The high-voltage electric energy metering device is an important equipment for electric power metering. Its comprehensive metering error is the basic element to measure whether the equipment is running normally. Test to judge whether the high-voltage electric energy metering device meets the working requirements. [0003] In the prior art, there are many methods for testing the comprehensive measurement error of the high-voltage electric energy metering device, but most of the methods follow the traditional test idea, which has the following disadvantages: the test method is clumsy, the efficiency is low, and the test error is not accurate enough; because of this , this type of method has been phased out; [0004] In recent years, for...

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Problems solved by technology

[0003] In the prior art, there are many methods for testing the comprehensive measurement error of the high-voltage electric energy metering device, but most of the methods follow the traditional test idea, which has the following disadvantages: the test method is clumsy, the efficiency is low, and the test error is not accurate enough; because of this , this type of method has been phased out;

[0005] (1) Since the extension transmits power data to the host, the power is the average value, and the real-time performance is poor. When the host uses the power value and the sampled pulse signal to calculate the error, the error stability is not good;

[0006] (2) Due to the need to input parameters and display related results on the host side, the host must have a keyboard, display unit and computing unit, the system is complex, the cost is high, and at the same time, the host unit is relatively large;

[0007] (3) When the main engine calculates the error, because the loss of the power transformer is not considered, the calculation result cannot accurately reflect the comprehensive error of the high-voltage electric energy metering device, especially when the load rate of the power transformer is small, this method will have a greater deviation

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