Automatic variable-frequency cathode protection station control method for restraining subway direct current interference
A cathodic protection and DC interference technology, which is applied in the field of automatic frequency conversion cathodic protection station control, can solve problems such as difficult to work normally, frequent positive and negative alternation of pipe-ground potential, and large amplitude changes, etc., and achieves obvious interference suppression effect and maintenance management project The effect of less quantity and convenient construction
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[0022] An automatic frequency conversion cathodic protection station control method for suppressing subway DC interference, including the following contents:
[0023] According to the characteristics of the impact of subway DC interference on pipelines, the developed automatic frequency conversion cathodic protection station control technology should have the following main technical performance or key points:
[0024] 1. Collection and analysis of interference source information
[0025] 1.1 Collect and sort out the test data in the preliminary general test (preparatory test) stage. The investigation and testing of the subway DC traction system shall be carried out in accordance with the provisions of Article 4.2.2 and 4.3.2 of the current national standard "Technical Standard for Direct Current Interference Protection of Buried Steel Pipelines" GB 50991, and focus on the following materials:
[0026] 1) Collect and sort out the soil resistivity and pipe / ground potential test data ob...
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