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Method for realizing synchronous sampling of voltage and current by utilizing wireless communication mode

A synchronous sampling, voltage and current technology, applied in the direction of measuring current/voltage, measuring electrical variables, instruments, etc.

Inactive Publication Date: 2014-05-07
STATE GRID JIANGSU ELECTRIC POWER CO LIANYUNGANG POWER SUPPLY CO +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since they are all weak signals, the signals are susceptible to interference, the signal attenuation is relatively large in long-term operation, and the workload of on-site cable laying is relatively large.

Method used

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Embodiment Construction

[0017] The specific technical solutions of the present invention are further described below, so that those skilled in the art can further understand the present invention, without limiting their rights.

[0018] A method for realizing synchronous sampling of voltage and current by means of wireless communication, the steps of which are as follows:

[0019] (1) The system has a main control device and multiple distributed measurement devices, all of which have wireless transceiver functions;

[0020] (2) The main control device sends an instruction to the distributed measurement device to enter the synchronous measurement preparation state through wireless means, and the instruction includes the sampling frequency and sampling times;

[0021] (3) After receiving the instruction, the distribution measurement device returns the instruction character to the main control device, indicating that the instruction is received, and enters the state of accepting the next instruction;

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Abstract

The invention provides a method for realizing synchronous sampling of voltage and current by utilizing a wireless communication mode. The method comprises the following steps: a system is provided with one master control device and multiple distribution measuring devices and all have wireless receiving and transmitting functions; the master control device transmits instructions for preparing, sampling and uploading sampling data to the distribution measuring devices via a wireless mode, and after the instructions are received by the distribution measuring devices, data sampling and uploading are performed; and the sampling data are analyzed and processed by the master control device. Voltage and current of high-voltage devices are sampled by adopting the wireless connection mode so that a conventional method of utilizing cables to perform wired sampling is substituted, a large amount of onsite cable laying work is saved, cost is saved and stability of signals is greatly enhanced via onsite digitalization.

Description

technical field [0001] The invention relates to a method for synchronous sampling of voltage and current, in particular to a method for realizing synchronous sampling of voltage and current of high-voltage equipment by means of wireless communication. Background technique [0002] In a substation, the resistive component (or capacitive component) of the leakage current of high-voltage equipment is an important characteristic quantity for judging the operating state of high-voltage equipment. The on-line monitoring system of high-voltage equipment needs synchronous sampling of voltage and current to calculate the resistive component and capacitive component of leakage current. [0003] The traditional method is to introduce voltage and current signals into the data acquisition board to realize synchronous sampling, and then the CPU can calculate the resistive current (or capacitive current) through a certain algorithm. Generally, the current signal is obtained by using the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00G08C17/02
Inventor 衡思坤朱立位尹雷韦海荣
Owner STATE GRID JIANGSU ELECTRIC POWER CO LIANYUNGANG POWER SUPPLY CO