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A Gas Density Monitoring System

A gas density and monitoring system technology, applied in the field of electric power, can solve problems such as hidden dangers in safe operation and affecting electrical performance of equipment, and achieve the effects of improving test accuracy, ensuring grid safety, and measuring accuracy

Active Publication Date: 2022-02-25
SHANGHAI ROYE ELECTRICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the high-voltage electrical equipment is currently SF 6 For gas insulated equipment, if the gas density decreases (such as caused by leakage, etc.), it will seriously affect the electrical performance of the equipment and cause serious hidden dangers to safe operation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] figure 1 It is a schematic circuit diagram of a gas density monitor used for high-voltage electrical equipment in Embodiment 1 of the present invention. Such as figure 1 As shown, a gas density monitor includes: an intelligent microprocessor 202 , a pressure sensor 201 , a temperature sensor 3 , a communication module 4 , and a memory 2021 . The pressure sensor 201 communicates with the gas path of the gas density monitor. The intelligent microprocessor 202 is connected with the temperature sensor 3 , the pressure sensor 201 and the communication module 4 respectively.

[0079] The intelligent microprocessor 202 obtains the pressure signal collected by the pressure sensor 201 and the temperature signal collected by the temperature sensor 3 at a set sampling frequency, and calculates the corresponding gas density value P according to the gas pressure-temperature characteristic 20 (that is, the pressure value P at 20°C 20 ). Described intelligent microprocessor 202 c...

Embodiment 2

[0105] Figure 4 It is a gas density monitoring system of the second embodiment of the present invention. Such as Figure 4 As shown, multiple high-voltage electrical equipment equipped with sulfur hexafluoride gas chambers and multiple gas density monitors are sequentially connected to the background monitoring terminal through a hub and an IEC61850 protocol converter. Wherein, each gas density monitor is respectively arranged on the high-voltage electrical equipment of the corresponding sulfur hexafluoride gas chamber.

[0106] In this embodiment, the background monitoring terminal PC communicates with multiple hubs HUB (HUB1, HUB2, ... HUBm) through the hub HUB0. Each hub HUB is connected to a group of gas density monitors, for example, hub HUB1 is connected to gas density monitors Z11, Z12, ... Z1n, hub HUB2 is connected to gas density monitors Z21, Z22, ... Z2n, ..., and hub HUBm is connected to gas Density monitors Zm1, Zm2, ... Zmn, where m and n are both natural num...

Embodiment 3

[0109] Figure 5 It is a gas density monitoring system according to the third embodiment of the present invention. Compared with the second embodiment, this embodiment adds a network switch Gateway, a comprehensive application server Server, and a protocol converter / online monitoring intelligent unit ProC. In this embodiment, the background monitoring terminal PC is connected to two comprehensive application servers Server1 and Server2 through the network switch Gateway, and the two comprehensive application servers Server1 and Server2 communicate with multiple protocol converters / online monitoring intelligence through the station control layer A network and B network. The unit ProC (ProC1, ProC2, ... ProCn) communicates, and the protocol converter / online monitoring intelligent unit ProC communicates with multiple hubs HUB (HUB1, HUB2, ... HUBm) through the R5485 network. Each hub HUB is connected to a group of gas density monitors, for example, hub HUB1 is connected to gas d...

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Abstract

The application discloses a gas density monitoring system, including: a background monitoring terminal, which realizes remote communication with at least one gas density monitor through communication equipment; the communication device is used to realize data transmission between the background monitoring terminal and the gas density monitor The gas density monitor includes, but is not limited to, one of a remote gas density relay, a gas density transmitter, and a gas density system; the background monitoring terminal or / and the gas density monitor include a depth calculation unit, The depth calculation unit converts the corresponding gas density value P 20 Perform in-depth calculation and processing to obtain accurate density values. The gas density monitoring system disclosed in this application can perform accurate online monitoring and fault diagnosis of gas-insulated electrical equipment, and can detect gas leakage in gas-insulated electrical equipment in a more timely manner to protect the power grid. Safety.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a gas density monitoring system applied to high-voltage and medium-voltage electrical equipment. Background technique [0002] Currently, SF 6 (Sulfur hexafluoride) electrical equipment has been widely used in the power sector, industrial and mining enterprises, and promoted the rapid development of the power industry. In recent years, with the rapid economic development, the capacity of my country's power system has expanded rapidly, and SF 6 The amount of electrical equipment is increasing. SF 6 The role of gas in high-voltage electrical equipment is arc extinguishing and insulation, and SF in high-voltage electrical equipment 6 If the density of the gas decreases and the moisture content exceeds the standard, it will seriously affect the SF 6 Safe operation of high-voltage electrical equipment: SF 6 The reduction of gas density to a certain extent will lead to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N9/00G01D21/02G05B19/042
CPCG01N9/00G01D21/02G05B19/0423
Inventor 金海勇郭正操黄小泵曾伟郝彩侠王乐乐
Owner SHANGHAI ROYE ELECTRICAL CO LTD
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