CN104359588A - Power cable temperature measuring device - Google Patents
Power cable temperature measuring device Download PDFInfo
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- CN104359588A CN104359588A CN201410655708.0A CN201410655708A CN104359588A CN 104359588 A CN104359588 A CN 104359588A CN 201410655708 A CN201410655708 A CN 201410655708A CN 104359588 A CN104359588 A CN 104359588A
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Abstract
Description
技术领域 technical field
本发明涉及电缆沟内电缆的温度测量装置，具体为电力电缆的测温装置。 The invention relates to a temperature measuring device for a cable in a cable trench, in particular to a temperature measuring device for a power cable.
背景技术 Background technique
随着电力系统的发展，电缆负载的电压和电流均不断提高，必然导致电缆运行时温升向极限温度接近；另外，在电缆接头和电力系统非正常工作（如超负荷、短路跳闸等）时，电缆的温升也可能出现异常情况。因此，如何采用有效的方式监测电缆在工作和运行过程中的温度变化状况，是保障电力系统安全的重要问题，对使用电力的生产和生活也具有非常重要的意义。 With the development of the power system, the voltage and current of the cable load are constantly increasing, which will inevitably lead to the temperature rise of the cable close to the limit temperature; , the temperature rise of the cable may also be abnormal. Therefore, how to use an effective method to monitor the temperature change of the cable during work and operation is an important issue to ensure the safety of the power system, and it is also of great significance to the production and life of using electricity.
传统测温方式一般采用热电偶或红外监测，但在高压电缆应用中，通过金属导线传递信号的热电偶存在高压安全问题；基于红外线技术的非接触测温又存在安装不便、温度测量易受环境干扰等问题。另外，上述两种测量方法都存在多点或分布式测量信号传输问题难以解决的问题。 Traditional temperature measurement methods generally use thermocouples or infrared monitoring, but in the application of high-voltage cables, thermocouples that transmit signals through metal wires have high-voltage safety issues; non-contact temperature measurement based on infrared technology is inconvenient to install, and temperature measurement is vulnerable to environmental conditions. interference etc. In addition, both of the above two measurement methods have the problem of multi-point or distributed measurement signal transmission that is difficult to solve.
发明内容 Contents of the invention
本发明为了解决传统的测温装置不能对电缆进行有效测温的问题，提供了电力电缆测温装置。 In order to solve the problem that the traditional temperature measuring device cannot effectively measure the temperature of cables, the invention provides a power cable temperature measuring device.
本发明是采用如下的技术方案实现的：电力电缆测温装置，包括光纤光栅温度传感器和感温光缆，光纤光栅温度传感器固定在电力电缆的电力电缆接头上，光纤光栅温度传感器的光纤光栅和与光纤测温系统连接的感温光缆熔接。 The present invention is realized by adopting the following technical scheme: power cable temperature measuring device, including fiber grating temperature sensor and temperature-sensing optical cable, fiber grating temperature sensor is fixed on the power cable joint of power cable, fiber grating of fiber grating temperature sensor and The temperature-sensing optical cable connected to the optical fiber temperature measurement system is welded.
光纤是由主要成分为SiO2的玻璃材料制成，具有良好的电绝缘性能，温度变化会使光纤材料的折射率和长度发生变化，或者使入射光的非线性散射（如拉曼散射或布里渊散射）信号波长发生变化，通过检测光纤折射率变化导致在光纤中传输的光波信号的变化，或散射光的波长或频率变化，就可以得到光纤所在位置的温度信息。光纤光栅温度传感器固定在电力电缆接头上，实时监测电力电缆接头的温度，即监测了电力电缆的温度，监测的温度由感温电缆传输到光纤测温系统，即可得到电力电缆的温度。 The optical fiber is made of glass material whose main component is SiO2, which has good electrical insulation properties. The temperature change will change the refractive index and length of the optical fiber material, or cause the nonlinear scattering of incident light (such as Raman scattering or Bury By detecting the change of the optical wave signal transmitted in the optical fiber caused by the change of the refractive index of the optical fiber, or the change of the wavelength or frequency of the scattered light, the temperature information of the position of the optical fiber can be obtained. The fiber optic grating temperature sensor is fixed on the power cable joint, and the temperature of the power cable joint is monitored in real time, that is, the temperature of the power cable is monitored. The monitored temperature is transmitted from the temperature sensing cable to the optical fiber temperature measurement system, and the temperature of the power cable can be obtained.
上述的一种电力电缆测温装置，感温光缆集成在电缆沟中的通信光缆内，减少电缆沟内施工量。 In the aforementioned power cable temperature measuring device, the temperature-sensing optical cable is integrated into the communication optical cable in the cable trench, reducing the amount of construction in the cable trench.
本发明提供了一种电力电缆测温装置，该电力电缆测温装置能方便有效的对电力电缆的温度进行监测，为电力系统的安全运行提供了保障。 The invention provides a power cable temperature measuring device, which can conveniently and effectively monitor the temperature of the power cable, and provides guarantee for the safe operation of the power system.
附图说明 Description of drawings
图1为本发明的结构示意图。 Fig. 1 is a structural schematic diagram of the present invention.
图中：1-电缆沟，2-电力电缆，3-电力电缆接头，4-光纤光栅温度传感器，5-感温光缆，6-光纤测温系统， 7-通信光缆。 In the figure: 1-cable trench, 2-power cable, 3-power cable connector, 4-optical fiber grating temperature sensor, 5-temperature-sensing optical cable, 6-optical fiber temperature measurement system, 7-communication optical cable.
具体实施方式 Detailed ways
电力电缆测温装置，包括光纤光栅温度传感器4和感温光缆5，光纤光栅温度传感器4固定在连接电力电缆2的电力电缆接头3上，光纤光栅温度传感器4的光纤光栅和与光纤测温系统6连接的感温光缆5熔接。 The power cable temperature measuring device includes a fiber grating temperature sensor 4 and a temperature sensing optical cable 5, the fiber grating temperature sensor 4 is fixed on the power cable joint 3 connected to the power cable 2, the fiber grating of the fiber grating temperature sensor 4 and the fiber optic temperature measuring system The temperature-sensitive optical cable 5 that 6 connects is welded.
上述的一种电力电缆测温装置，感温光缆5集成在电缆沟1中的通信光缆7内。 In the aforementioned power cable temperature measuring device, the temperature-sensing optical cable 5 is integrated in the communication optical cable 7 in the cable trench 1 .
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410655708.0A CN104359588A (en) | 2014-11-18 | 2014-11-18 | Power cable temperature measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410655708.0A CN104359588A (en) | 2014-11-18 | 2014-11-18 | Power cable temperature measuring device |
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| CN104359588A true CN104359588A (en) | 2015-02-18 |
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| CN201410655708.0A Pending CN104359588A (en) | 2014-11-18 | 2014-11-18 | Power cable temperature measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301723A (en) * | 2015-11-10 | 2016-02-03 | 江苏法尔胜光电科技有限公司 | Composite optical cable used for power cable connector temperature monitoring and monitoring system thereof |
| CN110926648A (en) * | 2019-11-15 | 2020-03-27 | 神华粤电珠海港煤炭码头有限责任公司 | High tension cable middle head optic fibre temperature measurement system |
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| CN201111993Y (en) * | 2007-10-09 | 2008-09-10 | 长江电缆有限公司 | Intelligent monitoring type power cable |
| CN201368778Y (en) * | 2008-12-22 | 2009-12-23 | 延安供电局 | Fiber grating power temperature monitoring system |
| CN201885824U (en) * | 2010-11-09 | 2011-06-29 | 成都智源电气有限责任公司 | Online distributing cable temperature monitoring device |
| CN102944801A (en) * | 2012-12-10 | 2013-02-27 | 天津亿利科能源科技发展股份有限公司 | Online monitoring system for carrying capacity of cable |
| CN102944263A (en) * | 2012-11-13 | 2013-02-27 | 武汉理工光科股份有限公司 | Cable tunnel multistate on-line monitoring system based on fiber grating sensing |
| CN204188307U (en) * | 2014-11-18 | 2015-03-04 | 国家电网公司 | Power cable temperature-measurindevice device |
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2014
- 2014-11-18 CN CN201410655708.0A patent/CN104359588A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201111993Y (en) * | 2007-10-09 | 2008-09-10 | 长江电缆有限公司 | Intelligent monitoring type power cable |
| CN201368778Y (en) * | 2008-12-22 | 2009-12-23 | 延安供电局 | Fiber grating power temperature monitoring system |
| CN201885824U (en) * | 2010-11-09 | 2011-06-29 | 成都智源电气有限责任公司 | Online distributing cable temperature monitoring device |
| CN102944263A (en) * | 2012-11-13 | 2013-02-27 | 武汉理工光科股份有限公司 | Cable tunnel multistate on-line monitoring system based on fiber grating sensing |
| CN102944801A (en) * | 2012-12-10 | 2013-02-27 | 天津亿利科能源科技发展股份有限公司 | Online monitoring system for carrying capacity of cable |
| CN204188307U (en) * | 2014-11-18 | 2015-03-04 | 国家电网公司 | Power cable temperature-measurindevice device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301723A (en) * | 2015-11-10 | 2016-02-03 | 江苏法尔胜光电科技有限公司 | Composite optical cable used for power cable connector temperature monitoring and monitoring system thereof |
| CN110926648A (en) * | 2019-11-15 | 2020-03-27 | 神华粤电珠海港煤炭码头有限责任公司 | High tension cable middle head optic fibre temperature measurement system |
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Application publication date: 20150218 |
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