Automatic closed-loop detection method for relay protection

A relay protection and detection method technology, which is applied in the field of automatic closed-loop detection of relay protection, can solve problems such as low efficiency, immature detection method of on-site relay protection devices, and failure to meet on-site maintenance-free requirements, etc.

Inactive Publication Date: 2018-05-08
YANCHENG POWER SUPPLY CO STATE GRID JIANGSU ELECTRIC POWER CO +2
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0009] The invention provides an automatic closed-loop detection method for relay protection, which greatly improves the efficiency, accuracy and reliability of relay protection detection, aiming at problems such as immature detection methods, low efficiency, and failure to meet on-site maintenance-free requirements for on-site relay protection devices. The degree of standardization improves the efficiency and safety of operation and maintenance of the entire power system

Method used

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Embodiment Construction

[0025] The specific implementation manner of a relay protection automatic closed-loop detection method of the present invention will be described in detail below.

[0026] The relay protection automatic closed-loop detection method of the present invention specifically comprises the following steps:

[0027] Step (1): The operator starts the test;

[0028] Step (2): Read the information of the relay protection device under test, load the test items, and generate a test plan;

[0029] Step (3): Check whether the AC current, voltage zero drift and linearity meet the requirements, if so, go to step (4), if not, issue a sampling abnormality alarm;

[0030] Step (4): Check whether the switching input and output are normal, if yes, go to step (5), if not, issue an alarm for abnormal switching value;

[0031] Step (5): Send the GOOSE command to automatically cast and withdraw the soft pressure plate required for the test item;

[0032] Step (6): Automatically adjust the fault anal...

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Abstract

The invention provides an automatic closed-loop detection method for relay protection. The method comprises: information of a detected relay protection device is obtained, a test item is loaded, and atest plan is generated; whether alternating current and voltage zero drifts and linearity meet the requirements is checked; whether open-in and open-out operations are normal is detected; a GOOSE command is sent and a flexible pressing plate needed by the test item is invested or withdrawn automatically; a fault analog quantity SMV is adjusted automatically to meet the setting requirements of a protection setting value; whether a detected relay protection device acts correctly is determined; a next test item is carried out until all test items are completed; all tests are completed and then atest report is generated automatically. According to the invention, an automatic closed-loop detection method for relay protection is provided to solve problems that the existing on-site relay protection device detection method is not mature, has the low efficiency, and does not meet the field maintenance-free requirement. Therefore, the efficiency, safety, and standardization degree of the relayprotection detection are improved substantially; and the maintenance and operation efficiency and safety of the entire power system are improved.

Description

technical field [0001] The invention belongs to the technical field of electric power detection, in particular to an automatic closed-loop detection method for relay protection. Background technique [0002] The in-situ relay protection device is installed near the primary equipment, the liquid crystal interface is canceled, and the standard connector is used externally. The test method is different from the conventional protection. It is difficult to carry out the on-site test work, and a large amount of test work needs to be carried out in the factory. At present, the following outstanding problems need to be solved in the detection of in-situ relay protection devices. [0003] (1) In-situ protection has not yet formed a mature standardized detection system [0004] There are many differences between in-situ secondary equipment and traditional relay protection equipment. One is to cancel the LCD panel design of the in-situ protection device, and it is necessary to combin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/003
Inventor 徐以超朱俊铭胡国波
Owner YANCHENG POWER SUPPLY CO STATE GRID JIANGSU ELECTRIC POWER CO
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