昆山博格马丁电力技术有限公司_无功补偿组件_SVG_智能电容器_电抗器_无线火灾报警自动灭火_电能质量_有源滤波器_弧光保护

PRODUCTS & SOLUTIONS

联系电话 021-62603561

Home Page > Solutions > Fiber grating temperature measurement solution

Introduction to the scheme

I. Introduction to distributed temperature measurement system:

1.1 Cable status monitoring system solution

1.1.1 System description

The cable status monitoring system assesses the cable safe operation level, intelligently analyzes the cable current carrying quantity and gives early warning of cable failure information by monitoring the a series of parameters including cable temperature, partial discharge and shield circulating current to avoid electric accident caused by cable failure.

1.1.2 System functions

1) Cable and cable joint temperature monitoring

Real-time temperature monitoring and abnormal warning of the high voltage cable and its joint through distributed optical fiber temperature measurement system.

2) Carrying capacity monitoring

Calculate the cable core temperature, calculate and simulate the maximum carrying capacity under various running environments through the mathematical model of dynamic carrying capacity.

3) Sheath grounding current monitoring

Monitor the ground wire leakage current through the current transformer to achieve effective monitoring and abnormal warning of the sheath grounding current.

4) Partial discharge monitoring

Obtain the partial discharge information and analyze the cable and joint insulation through the high-frequency current transformer installed in the cable joint ground wire to provide basis for assessment of its insulation level and aging.

1.1.3 Engineering application

High-voltage power cable temperature monitoring

Cable joint temperature monitoring

1.2 Distributed optical fiber temperature measurement system of oil tank

1.2.1 System overview

The distributed optical fiber temperature measurement system of oil storage tank realizes the oil tank fire detection through real-time monitoring of the oil tank temperature changes.

1.2.2 System functions

1) Storage tank system fire monitoring

Achieve the purpose of storage tank fire detection through real-time monitoring of oil tank top temperature.

2) Differential and constant temperature alarm

Prompt the alarm information when the tank temperature exceeds the setting range.

3) Intelligent alarm

Drive the sound-light alarm and SMS alarm and notify relevant personnel to treat.

4) Intelligent interface

The system can be interconnected with other systems through the standard interface.

1.2.3 System performance

1) Monitoring distance: 15km

2) Temperature measurement range: -190-750℃ (depending on the detection optical fiber)

3) Temperature measurement accuracy: ±1 degree

4) Response time: less than 5s

II. Introduction to fiber grating temperature measurement system:

2.1 Transformer temperature measurement system

2.1.1 System overview

The transformer fiber grating online monitoring system can achieve real-time accurate winding temperature measurement, achieve comprehensive monitoring of the temperature in the transformer, accurately measure the transformer winding temperature and control real-time fan cooling pump and other cooling systems to greatly prolong the service life of the power equipment transformer, guarantee the power supply at peak load and minimize the unplanned accidents, so as to improve the operation safety and reliability of the whole system.

2.1.2 System functions

1) Use fiber grating sensor for temperature measurement, with zero drift and long life

2) Pure optical fiber probe, intrinsic safety and high-voltage insulation

3) Self-diagnostic function to prevent false positives and false negatives

4) Small probe size for easy installation

2.1.3 System indicators

1) Number of channels: 4 (extendable)

2) Temperature measurement range: -40~300℃

3) Temperature measurement accuracy: ±1 degree

4) Resolution: 0.1 degree

5) Response time: 25ms

2.2 Switch cabinet fiber grating temperature measurement system

2.2.1 System overview

Online real-time temperature monitoring of the power switch cabinet is an important guarantee for safety of the switch cabinet. Poor contact, oblique plugging and other reasons in the switch cabinet result in overheat and even burn the equipment. Poor contact of high voltage cable joint and connector results in abnormal overheating and accelerates insulation aging and breakdown, which is the main failure form of the high voltage switch cabinet. The switch cabinet fiber grating online monitoring system is characterized by insulation, contact type, long-time running and real-time monitoring and is very suitable for temperature monitoring of the power switch cabinet.

2.2.2 System composition

系统主要由光纤解调仪、光纤光栅温度传感器和传输光缆等组成。光纤光栅解调仪主机放置在监控中心控制室内，温度传感器并联安装在开关柜内电缆接头、动静触点等处，通过主传输光缆连接到解调仪上。

2.2.3 System advantages

Intrinsic safety, anti-thunder and anti-explosion, anti-electromagnetic interference and complete insulation

High sensitivity, high measurement accuracy and fast response time

Multi-level alarm mode: constant temperature alarm, differential temperature alarm, SMS alarm and sound-light alarm

Long system service life and meeting real-time online and 24h uninterrupted monitoring

Stable and reliable system can be used in humid and severe environment

Large monitoring capacity, synchronous scanning of all channels and optional frequency

2.2.4 System applications

The system applies to the temperature monitoring of contacts in the power switch cabinets in the power plants and substations:

Switch cabinet cable joint

Busbar joint

Moving and fixed contacts

Switch contact

2.2.5 System indicators

Number of channels: 4 (extendable)

Wavelength: 1525-1565

Temperature accuracy: less than 0.1℃

Scanning frequency: 25Hz

Communication interface: RJ45/RS232/RS485

Working temperature: 0-50℃

Power supply: 220V

Application domain

Related case

Scheme selection如需更详细技术资料，请致电021-62603561

● Distributed temperature measurement system model

BGMD-DTS

● Fiber grating temperature sensor Model

1) Fiber grating temperature sensor BGMD-SR-TE01

2) Fiber grating temperature sensor BGMD-SR-TE02

Above method源文件下载

Related products查看更多