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Power substation S-shaped primary through-flow system and method

A substation and flow-through technology, which is applied in the field of substation S-type primary flow-through system, can solve the problems of long-time flow-through test, frequent operation of circuit breakers, and low test efficiency, so as to save flow-through test time, save test time, The effect of ensuring accuracy

Active Publication Date: 2017-05-31
XIAN XIRE ENERGY SAVING TECH
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  • Claims
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Problems solved by technology

In the existing one-time flow test, the primary circuit of the substation is usually passed through in sections. When completing each section of flow, it is necessary to frequently operate the circuit breaker, isolation switch and grounding switch. The flow test takes a long time and the test efficiency is low. and unreliable issues

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  • Power substation S-shaped primary through-flow system and method
  • Power substation S-shaped primary through-flow system and method

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Embodiment Construction

[0047] The technical solutions of the present invention will be further described in detail below through the accompanying drawings and embodiments.

[0048] like figure 1 and figure 2 As shown, a S-type primary flow method for a substation according to the present invention includes the following steps:

[0049] 1) Carry out the preparation for the S-type primary flow test of the substation, and go to step 2) after all the preliminary preparations are completed;

[0050] 2) Turn on the power supply of the current meter 9, adjust the output of the current meter 9 to half the rated current, and enter step 3);

[0051] 3) measure and record the actual current of each interval CT secondary side when the current meter 9 outputs half the rated current, then enter step 4);

[0052] 4) Determine whether the measured value of the CT secondary side current of each bay is consistent with the theoretical calculation value of the CT secondary side when the current meter 9 applies half...

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Abstract

The invention belongs to the technical field of power debugging and power tests, and particularly relates to a power substation S-shaped primary through-flow system and method. In primary through flow, the method comprises the steps of connecting the head portion of an S shape of a primary loop of a power substation to the output end of a through flow instrument, connecting the tail portion of the S shape to an earth screen to be connected with the input end of the through flow instrument, measuring and recording actual current of all interval CT secondary sides in two situations that the through flow instrument outputs half rated current and rated current, and checking correctness of the primary loop and a secondary loop of a design drawing, thus guaranteeing correctness of CT ratio and polarity configuration and guaranteeing that a CT secondary loop has no open circuit phenomenon. The S-shaped through-flow method disclosed by the invention has the advantages of enabling a through-flow test to be finished in one time, avoiding segmented through flow and frequent disconnector operation, further saving through-flow test time, achieving high test efficiency, high test accuracy, high practicability, convenience in use, and capability of quickly and accurately recognizing defects of a CT mutual inductor, and being suitable for the field of through-flow tests of small, medium and large power substations.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of electric power debugging and electric power testing, and in particular relates to an S-type primary current flow system and method for a substation. [0003] Background technique: [0004] At present, my country's economy is developing rapidly, and people's quality of life is improving day by day. Electric power has become the cornerstone of today's social energy due to its advantages of green environmental protection, high conversion and transmission efficiency, easy management, and dispatch control. At the beginning of the 13th Five-Year Plan, my country's infrastructure is still expanding and improving. The demand for power energy is increasing day by day, the scale of the power system is expanding, and the number of substations under construction is increasing. Basically, during the construction and commissioning of the substation, it is necessary to ensure that all CT current transformers have ...

Claims

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Application Information

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IPC IPC(8): G01R31/06G01R29/20G01R35/02
CPCG01R29/20G01R31/72G01R35/02
Inventor 寇水潮兀鹏越柴琦居文平梁舒婷张钢吴利平
Owner XIAN XIRE ENERGY SAVING TECH
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