DC power transmission deep-well-type earth electrode temperature measurement device, DC power transmission deep-well-type earth electrode temperature online monitoring system and DC power transmission deep-well-type earth electrode temperature online monitoring method
A technology of direct current transmission and temperature measuring devices, which is applied to measuring devices, thermometers, and thermometers with physical/chemical changes. temperature and other issues
Inactive Publication Date: 2017-06-09
CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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Problems solved by technology
One of the common methods is the vertical shallow-buried grounding electrode scheme. The electrodes of the vertical shallow-buried grounding electrode are buried about 40m below the ground. A number of temperature sensors are placed in several electrode wells for temperature monitoring, but the traditional sensor temperature measurement process can only measure the temperature at a certain point. To test a full range of temperatures, a large number of sensors are required, the price is expensive, and the failure rate of the sensors high
On the other hand, the core component of the traditional sensor temperature measurement process is the optical fiber sensor. After the electrode is filled with petroleum coke, it will bear a certain pressure. The general temperature sensor’s environmental compressive strength is 1MPa, and the electrode well is tens of meters. It can withstand the pressure of petroleum coke. If the electrode well is very deep, reaching about 1000m, then the ambient pressure will reach 10MPa, and the sensor will not work normally, so the traditional sensor temperature measurement technology is not suitable for temperature monitoring of deep well type grounding electrodes
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[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.
[0026] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical", "horizontal", "left", "right" and similar expressions are for the purpose of illustration only and do not represent the only embodiment.
[0027] Unless otherwise defi...
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The invention relates to a DC power transmission deep-well-type earth electrode temperature measurement device which comprises the components of an electric feeding rod which is arranged underground, a temperature measuring fiber which is fixed on the electric feeding rod, and a signal demodulator which converts the optical signal of the temperature measuring fiber to a temperature signal. The signal demodulator is electrically connected with the temperature measuring fiber. The temperature measuring fiber extends from the bottom end of the electric feeding rod to the top end. Because the temperature feeding fiber is utilized, temperature monitoring on the whole range of the electric feeding rod can be realized. The DC power transmission deep-well-type earth electrode temperature measurement device has advantages of ultra-simple structure, convenient construction, high maintainability and high reliability.
Description
technical field [0001] The invention relates to the technical field of ground electrode temperature measurement, in particular to a direct current transmission deep well type ground electrode temperature measurement device, an online temperature monitoring system and a monitoring method thereof. Background technique [0002] The DC transmission system in my country mostly adopts the neutral point grounding method at both ends of the bipolar poles. To construct a DC transmission system using this grounding method, it is necessary to build a DC grounding pole at the sending end and the receiving end. One of the common methods is the vertical shallow-buried grounding electrode scheme. The electrodes of the vertical shallow-buried grounding electrode are buried about 40m below the ground. A number of temperature sensors are placed in several electrode wells for temperature monitoring, but the traditional sensor temperature measurement process can only measure the temperature at ...
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Login to View More IPC IPC(8): G01K11/32
CPCG01K11/32
Inventor 彭冠炎伦振坚刘继权贾红舟孔志达
Owner CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD