High-voltage/UHV DC interference mitigation system and method for long-distance oil and gas pipelines
A technology for UHV DC and long-distance pipelines, which is applied in the system field of mitigating high-voltage/UHV DC interference in long-distance oil and gas pipelines. It can solve the problems of wide range of influence, increased stripping of anti-corrosion layers of long-distance oil and gas pipelines, hydrogen embrittlement corrosion leakage and even explosions. , long-distance oil and gas pipelines, etc., to achieve the effects of high efficiency, safety assurance, and conflict relief
Inactive Publication Date: 2019-01-25
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
The impact of this current on long-distance oil and gas pipelines is strong and wide-ranging, seriously affecting the normal operation of the cathodic protection system of buried pipelines, and greatly increasing the risks of anti-corrosion layer peeling, hydrogen embrittlement, corrosion leakage, and even explosion on long-distance oil and gas pipelines
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[0021] Such as figure 1 As shown, the high-voltage / ultra-high-voltage DC interference mitigation system for oil and gas long-distance pipelines in the present invention includes a mitigation ground bed 1, a cable 2, an intelligent two-way forced flow device 3 and a control reference electrode 4, and the mitigation ground bed 1 passes through the cable 2 is connected to the anode terminal 8 of the intelligent two-way forced flow device 3, the oil and gas long-distance pipeline is connected to the cathode terminal 6 of the intelligent two-way forced flow device 3 through the cable 2, and the control reference electrode 4 is connected through the cable 2 It is connected with the control reference electrode terminal 5 of the intelligent two-way forced flow device 3 , and the zero position female connection post 7 of the intelligent two-way forced flow device 3 is connected with the zero position female connection through the cable 2 .
[0022] In order to ensure the safety of the ...
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The invention discloses a mitigation system and a mitigation method for high-voltage and extra-high voltage direct-current interference of a long-distance oil and gas pipeline, and relates to a system and a method for mitigating the high-voltage and extra-high voltage direct-current interference of the long-distance oil and gas pipeline. The mitigation system and the mitigation method for the high-voltage and extra-high voltage direct-current interference of the long-distance oil and gas pipeline provided by the invention are economical and effective. The mitigation system disclosed by the invention comprises a mitigation ground bed (1), cable (2), an intelligent bidirectional forced drainage device (3) and a control reference electrode (4). The mitigation method disclosed by the invention comprises the following steps: (1) carrying out field research on the long-distance oil and gas pipeline and a grounding electrode of a high-voltage and extra-high voltage direct-current transmission system; (2) testing the pipe-to-soil potential offset of the long-distance oil and gas pipeline; (3) according to the test result, installing the mitigation system at the position where the pipe-to-soil potential offset is higher; and (4) after the installation of the mitigation system is completed, carrying out inspection before a machine is started, and after the machine is confirmed, starting the intelligent directional forced drainage device.
Description
technical field [0001] The invention relates to the field of long-distance oil and gas pipelines, in particular to a system and method for alleviating high-voltage / ultra-high-voltage DC interference of long-distance oil and gas pipelines. Background technique [0002] With the proposal of a series of major national strategies such as the "Belt and Road Initiative", "Beijing-Tianjin-Hebei Coordinated Development" and "Yangtze River Economic Belt", oil and gas pipelines and high-voltage / ultra-high-voltage DC transmission lines have entered a period of large-scale construction. Different from high-voltage AC transmission lines, HV / UHV DC transmission systems include DC grounding electrodes, and there are two operating modes: bipolar operation and unipolar operation. [0003] Typically, HV / UHVDC transmission systems operate with bipolarity. The bipolar operation mode is to use the positive and negative pole wires to connect with the positive and negative poles of the converter ...
Claims
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IPC IPC(8): H01R4/66
CPCH01R4/66
Inventor 罗春平沈李沪潘友生梁建超沙振华高翔柳良启肖强荣傅军杰陈亮汪华明
Owner CHINA PETROLEUM & CHEM CORP