Watthour meter remote verify monitoring system

A technology of electric energy metering device and monitoring system, which is applied in the direction of measuring device, electrical signal transmission system, measuring electrical variables, etc., can solve the problems of long verification cycle and single detection method, achieve wide applicability, comprehensive performance evaluation, and reduce faults The effect of duration

Inactive Publication Date: 2008-04-16
红相电力(上海)有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to provide a verification and monitoring system that can implement all-round online monitoring of the working status of the electric energy metering device and has a remote communication function in view of the shortcomings of the current electric energy metering device with single detection means and long verification period

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  • Watthour meter remote verify monitoring system

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0011] See figure 1 . The remote verification and monitoring system of the electric energy metering device is composed of an on-site unit 14, an on-site computer 12 and a remote computer 13, wherein the on-site unit 14 includes an internal standard watt-hour meter 6, a microprocessor unit 8, an isolation transformer 9, and an on-site display Unit 10, remote communication unit 11; the secondary side voltage of the voltage transformer 2 and the secondary side current of the current transformer 1 are simultaneously connected to the standard watt-hour meter 6 and the tested watt-hour meter 7 inside the local unit 14; The microprocessor unit 8 inside the ground unit 14 can simultaneously receive the power pulses output by the standard watt-hour meter 6 and the checked watt-hour meter 7, and calculate the metering error of the checked watt-hour meter 7; the ...

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Abstract

The invention provides a remote checking and monitoring system for electrical energy measuring instrument, the system is composed of a local unit, a local computer, a remote computer; a local display unit and a remote communication unit are connected with a microprocessor unit; the local computer and the remote computer are connected with the remote communication unit; the secondary voltage of a voltage transformer and the secondary current of a current transformer are connected with a checked ammeter and a standard ammeter in the local unit at a same time. The invention has the advantages that: firstly, an omni-bearing test for the whole electrical energy measuring system can be realized; secondly, a real-time on-line test for the electrical energy measuring system is realized; thirdly, the invention is provided with a remote communication function; fourthly, the invention can be interfaced with electrical energy measuring instruments of different types and from different factories; fifthly, the problems existing in the electrical energy measuring work of electrical customers can be accurately grasped.

Description

technical field [0001] The invention relates to an online calibration monitoring system capable of remotely monitoring the operating characteristics of an electric energy metering device, which is mainly used for real-time monitoring of the error of the entire metering circuit from the secondary side of the transformer to the watt-hour meter when the electric energy metering device is running with electricity and exceptions. Background technique [0002] A complete energy metering device includes voltage transformers, current transformers, secondary cable loops, and energy meters. At present, the detection of electric energy metering devices is carried out by using a variety of detection equipment: the error characteristics of current transformers and voltage transformers are mainly carried out by various portable calibrators in the power outage state, and the error characteristics of watt-hour meters are mainly used The field calibrator of the electric energy meter is carr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00G01R35/02G01R35/04G08C19/00
Inventor 杨成理查德·道林何肖军张建
Owner 红相电力(上海)有限公司
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