SF6 gas density relay online monitoring system application case- SF6在线监测系统_SF6检漏仪_SF6传感器_SF6密度继电器

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SF6安全保障专家

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SF6 gas density relay online monitoring system application case

发布时间：2020-06-04 来源：ydlcb 浏览次数：40次

The density of SF6 gas is indirectly expressed by the pressure value of SF6 gas after temperature compensation. SF6 density relay works under the rated pressure, when the ambient temperature changes, the pressure of SF6 gas also changes, and the temperature compensation device inside the density relay automatically compensates its changed pressure, so that its pressure does not change with the temperature change. When the gas leaks for some reason, the pressure drops and drops to the alarm setting value, the density relay outputs the group (alarm) signal and the device performs air recharging. When the pressure continues to drop and drops to the lock setting value, the density relay outputs the second group (lock) signal and the control system blocks, thus realizing the protection of the high voltage switch and the power grid equipment.

The optical fiber is used as the communication medium to remotely monitor the SF6 gas density in the density container. When the density value reaches the set value, the alarm is generated. It has real-time remote transmission of SF6 gas density change data to realize online remote monitoring function. It is suitable for the monitoring of high pressure system, realizes the function of online remote monitoring, and can realize the local indication and control of the instrument. Strong anti-interference ability, strong static environment. Optical fiber communication interface, large data capacity, fast communication speed, strong adaptability, long service life, all monitoring points at intervals can be interconnected with higher-level IED through self-developed optical fiber interface, reducing the number of interfaces to save IED resources. Technical indicators: Through the inspection and testing of Shanghai Instrument intelligent control system, in line with professional identification standards.

SF6 gas density online monitoring system sulfur hexafluoride (SF6) is a non-toxic, tasteless, colorless, odorless, non-combustible synthetic gas, with general dielectric incomparable insulation characteristics and arc extinguishing ability, widely used in the world's power industry in high-voltage circuit breakers and substation equipment. Almost become high voltage, ultra-high voltage circuit breakers and GIS in the insulation and arc extinguishing medium. The density of SF6 gas is the main indicator of the insulation and arc extinguishing performance of the gas, so the operation regulations of the National Power Company mandate that the density of SF6 gas must be tested regularly before and during the operation of the equipment. WINFOSS-D6 remote transmission density relay

Product functions and features: 1, interval as a unit of small monitoring system, compact economy; 2. On-site real-time visual display of SF6 temperature, pressure and density of each gas chamber in the system; 3, flexibly set alarm limit value, local query historical alarm information; 4, local control remote density relay communication status, easy maintenance; 5, HMI embedded configuration software, stable and reliable operation; Touch screen design, intuitive and easy to operate; 6, the use of electromechanical integrated design of the remote SF6 relay. Indication and alarm using the traditional mechanical structure, signal acquisition and remote transmission using transmitters and electronic chips, two sets of monitoring systems independent and reliable operation, to achieve equipment safety double insurance.

1, the mechanical dial type SF6 density relay display density value and contact output and SF6 gas temperature, pressure, density sensor digital signal output integration, to achieve the physical interface and digital information dual comparison relationship; 2, realize the traditional density relay remote communication function, online real-time monitoring and collection of SF6 gas temperature, pressure and density data parameters in SF6 electrical equipment; 3, the gas leakage in the equipment in advance alarm function, and can be judged according to the set alarm value. System advantages: 1, the use of remote transmission type SF6 density relay, not only can maintain the original SF6 gas alarm and lock the contact function, but also can realize the gas density, pressure, temperature digital signal output to achieve remote transmission function, for a comprehensive grasp of the operating state of high voltage equipment to provide conditions. 2, after the realization of online monitoring, improve the ability of operation and maintenance personnel to identify, greatly reduce the pressure of staff, improve the real data of substation equipment operation and safety production, and can provide the basis for the status monitoring and maintenance of high-voltage equipment, to meet the needs of the development of smart grid.