With the development of power system in China, the indoor substation has been widely used in large and medium-sized city: because SF6 is widely used in indoor substation circuit breaker. While the SF6 leakage is inevitable to encounter problems, SF6 concentration in the air will endanger the personal safety of operation personnel: in order to protect the personal safety of substation operating personnel, I the company developed the SF6 gas leakage monitoring system. SF6 gas leakage monitoring system is mainly composed of two parts: one is the sister of a detection system, used SF6 content, collecting the position of indoor oxygen content and temperature, humidity, and sent to the host processing: the host processing system, used to measure the value of the collection of detection system, regularly keep the measured value to the database, at the same time the measurement results and set the limit values are compared. If there are more limited, an alarm signal is generated. And the control node is connected with fan, wind wind starting opportunity, avoid a crisis face.
System function
● SF6 gas concentration detection function, temperature and humidity alarm function
● oxygen content detection function of SF6 gas content exceed the standard or hypoxia, automatically start the fan exhaust function
The temperature and humidity detection function of the timing and the forced ventilation function
● SF6 gas content exceed the standard alarm function, data storage and query functions
● the oxygen alarm, remote data transmission function
System features
Support power line carrier communication, without the need to set up network chromium. Save the construction of manpower.
It also supports RS232, RS485, Ethernet interface, can set up communication network.
◆ applicable to 500KV, 220KV, 110KV, 35KV, 10 KV voltage SF6 switch room and switchgear room (GIS room).
◆ adopts imported high sensitivity SF6 and oxygen sensor, and equipped with auxiliary temperature and humidity sensors, fast, stable, reliable.
The multi sensors, multi azimuth installation, ensure the alarm quickly, timely, accurate.
◆ adopts embedded industrial computer as a management unit, with a user-friendly interface, clear structure, simple and clear, easy to operation and query.
The large capacity memory, solid record form, meet customer requirements for data storage capacity and storage time.
Environmental conditions
★ altitude: ≤ 5000m
★ environment temperature: -30 ℃ ~+60 ℃
★ atmospheric pressure: 56~106kPa
★ relative humidity: 5%~95%
The main technical indicators
The input power supply: 185~265VAC SF6 alarm concentration: 50~1500PPM (identified)
● response time: ≤ 10 seconds the temperature measurement range: -30~99 ℃
● oxygen concentration measurement range: 1.0%~50.0% the humidity measurement range: 0~99%
● oxygen concentration measurement precision: < 0.5%
The sensor model description
|
Name
|
Model
|
SF6 sensor
|
Oxygen sensor
|
Temperature sensor
|
Humidity sensor
|
|
Four in one
|
YX-SF6-01A
|
Yes
|
Yes
|
Yes
|
Yes
|
|
Three in one
|
YX-SF6-01B
|
Yes
|
Yes
|
Yes
|
No
|
|
Two-in-one
|
YX-SF6-01C
|
Yes
|
Yes
|
No
|
No
|
|
Single SF6 probe
|
YX-SF6-01D
|
Yes
|
No
|
No
|
No
|
Power line carrier code design diagram
