Automatic closed-loop detection method for relay protection

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are normal is detected; a GOOSE command is sent and a flexible pressing plate needed by the test item is invested or withdrawn automatically; a fault analog quantity SMV is adjusted automatically to meet the setting requirements of a protection setting value; whether a detected relay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...

AI Technical Summary

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