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On-line monitoring of SF6 micro-water density
Category: Product Center
Key words: equipment
Product Description
System Introduction
This product implements the SF6Gas micro-water pressure density data real-time monitoring, data remote transmission, fault warning, background display and trend analysis, for the condition maintenance and intelligent substation construction to provide reliable information and important support. The system is suitable for high-voltage switches and combined electrical equipment such as SF6The on-line monitoring of gas micro-water and pressure density, the equipment is stable and reliable, the power supply is reliable, and the ability to resist strong electromagnetic interference is strong, which effectively improves the safety and service life of the equipment.
Functional features
◎ The device can collect SF in real time6Gas pressure, temperature, density and micro-water (optional) data, and processing upload background system;
◎ The use of high stability sensor, the output linearity is good, high precision, detection module comes with temperature compensation to ensure the reliability and stability of the output value;
The external structure of the transmitter is suitable for measurement in the environment of high-frequency electric field interference. The signal and the digital part are integrated locally to reduce interference coupling and improve the stability and reliability of the long-term operation of the circuit of the detection module;
IED device adopts high-precision reference compensation and high-precision custom filtering algorithm to filter out interference and ensure stable and reliable data;
◎ The dustproof and waterproof grade of sensors and accessories reaches IP65 grade.
Main technical parameters
| Serial Number |
Parameters |
Detection range |
Accuracy |
| 1 |
PressureForce |
|
±1%FS |
| 2 |
denseDegree |
|
±1%FS |
| 3 |
TemperatureDegree |
|
± 0.5 ℃ |
| 4 |
Micro water (optional) |
|
±2%FS |
| 5 |
DewPoint |
|
±2℃ |
| 6 |
Micro water alarm threshold |
300ppmv (settable) |
|
| 7 |
Density (pressure) alarm threshold |
0.52MPa (settable) |
|
| 8 |
Density (pressure) alarm canceled |
0.53MPa (settable) |
|
| 9 |
Density (pressure) blocking threshold |
0.50MPa (settable) |
|
| 10 |
Density (pressure) lockout release |
0.51MPa (settable) |
|
| 11 |
Working ringEnvironment |
Temperature:-40 ℃ ~ +65 ℃, relative humidity ≤ 95% RH |
|
| 12 |
Protection, etc.Level |
IP65 |
|
| 13 |
Communication partyType |
RS485IEC61850 through IED |
|
system composition
SF6 pressure density micro-water online monitoring is mainly composed of sensors (including three-way valve), hubs and SF6 monitoring IED. Each sensor is first connected to the hub through RS485, and then connected to SF6 monitoring IED through the hub. SF6 monitoring IED is uploaded to the background monitoring system through IEC61850. As shown in the following figure:
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