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Method and system for monitoring intelligent transformer substation sulfur hexafluoride breaker characteristics

An intelligent substation, sulfur hexafluoride technology, applied in circuit devices, information technology support systems, electrical components, etc., can solve problems such as troublesome calibration, waste of manpower, material resources, financial resources, and low measurement accuracy, so as to reduce power outages Overhaul, avoid waste, improve reliability

Inactive Publication Date: 2015-01-28
NANYANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The density relay is a mechanical device with low measurement accuracy and requires daily inspections. It is very troublesome to calibrate it (some density relays need to be disassembled and calibrated), and it also wastes SF6 gas. a lot of work
In addition, inspection personnel, inspection vehicles, inspection equipment and high-value SF6 gas are required to complete the inspection work, resulting in a lot of waste of manpower, material resources, and financial resources.

Method used

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  • Method and system for monitoring intelligent transformer substation sulfur hexafluoride breaker characteristics
  • Method and system for monitoring intelligent transformer substation sulfur hexafluoride breaker characteristics
  • Method and system for monitoring intelligent transformer substation sulfur hexafluoride breaker characteristics

Examples

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Embodiment 1

[0029] Such as figure 1 , figure 2 and image 3 As shown: the present invention provides a method for monitoring the characteristics of sulfur hexafluoride circuit breakers in intelligent substations. By configuring SF6 gas polymer film capacitive humidity sensors, density sensors, and temperature sensors, long-term on-line monitoring of SF6 gas in the circuit breaker. Moisture, temperature and its change trend, the data is transmitted to the DSP chip through the transmitter, and the change curve of the corresponding index is given. When the relevant index reaches the alarm state, the alarm or the alarm device is automatically activated. When the relevant index exceeds the standard and reaches a dangerous state When the alarm occurs, the circuit breaker automatically activates the locking unit to prohibit the circuit breaker from operating, and sends the data information and alarm information to the monitoring base station. The monitoring base station summarizes the informat...

Embodiment 2

[0032] Such as figure 1 , figure 2 and image 3 As shown: the present invention also provides a monitoring system for the characteristics of sulfur hexafluoride circuit breakers in intelligent substations, including a monitoring device, a monitoring base station and a centralized control center. The monitoring device includes a data acquisition unit, a display unit, a DSP chip, and an alarm unit And locking unit, described DSP chip is connected with described data acquisition unit, display unit, alarm unit and locking unit, and described monitoring base station comprises main control PC, and described DSP chip is through RS485 communication interface and described main control PC connected, the monitoring base station is connected to the centralized control center through a wireless mobile public network or a wired optical fiber. The monitoring device is used to collect the information of the sulfur hexafluoride circuit breaker and store it in the DSP chip. Compared with th...

Embodiment 3

[0037] Such as figure 1 , figure 2 and image 3 As shown: the present invention also provides a monitoring system for the characteristics of sulfur hexafluoride circuit breakers in intelligent substations, including a monitoring device, a monitoring base station and a centralized control center. The monitoring device includes a data acquisition unit, a display unit, a DSP chip, and an alarm unit And locking unit, described DSP chip is connected with described data acquisition unit, display unit, alarm unit and locking unit, and described monitoring base station comprises main control PC, and described DSP chip is through RS485 communication interface and described main control PC connected, the monitoring base station is connected to the centralized control center through a wireless mobile public network or a wired optical fiber. The monitoring device is used to collect the information of the sulfur hexafluoride circuit breaker and store it in the DSP chip. Compared with th...

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Abstract

The invention discloses a method and system for monitoring intelligent transformer substation sulfur hexafluoride breaker characteristics. The characteristics of the temperature, the humidity and the pressure of a sulfur hexafluoride breaker are monitored, the sulfur hexafluoride breaker moves when monitored values exceed safety values, collected information is gathered to a centralized control center, and the centralized control center is in remote communication with an operation and maintenance worker for achieving unattended operation of a transformer substation. The system comprises a monitoring device, a monitoring base station and the centralized control center, the monitoring device comprises a data acquisition unit, a display unit, a DSP chip, an alarm unit and a locking unit, the monitoring base station comprises a master control PC, the DSP chip is connected with the master control PC through an RS485 communication interface, the monitoring base station is connected with the centralized control center through a wireless and mobile public network or wired optical fibers, and alarming and locking motion point communication teletransmission of the breaker can be achieved; in addition, the monitoring base station can be connected into a background operation system to be connected with an upper computer, and therefore real-time monitoring and real-time display are realized.

Description

technical field [0001] The invention relates to the technical field of on-line monitoring of substation equipment, in particular to a method and system for monitoring the characteristics of a sulfur hexafluoride circuit breaker in an intelligent substation. Background technique [0002] As a non-combustible synthetic gas, SF6 has extremely stable chemical properties. Its insulation capacity under normal pressure is more than 2.5 times that of air, and its arc extinguishing capacity is 100 times that of air. It has incomparable insulation and arc extinguishing characteristics of general dielectrics. . Therefore, with the development of science and technology and economy, sulfur hexafluoride switches and hermetic combined electrical appliances (GIS) using sulfur hexafluoride (SF6) gas with excellent electrical insulation and arc extinguishing properties as the insulating and arc extinguishing medium have become Widely used in power systems, it is gradually replacing the previ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
CPCY02E60/00Y04S10/16
Inventor 于善华
Owner NANYANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER
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