Power grid relay protection setting key node screening method and device, terminal and medium
A key node and relay protection technology, applied in the field of electric power, can solve problems such as low reliability
Pending Publication Date: 2022-03-04
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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[0004] This application provides a method, device, terminal and medium for screening key nodes of power grid relay protection setting, which are used to solve the problem of low reliability in the existing technology of screening key nodes that need to be tuned based on historical data combined with personal experience during the special operation of the power grid technical issues
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[0045] The embodiment of the present application provides a method, device, terminal, and medium for screening key nodes for relay protection setting of the power grid, which are used to solve the problem of selecting key nodes that need to be set based on historical data combined with personal experience in the prior art during special operation of the power grid. low technical issues.
[0046] In order to make the purpose, features and advantages of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the following The described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts...
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The invention discloses a power grid relay protection setting key node screening method and device, a terminal and a medium. According to the method provided by the invention, on the basis of the obtained power grid network topology, the cohesion degree, the protection response sensitivity and the protection response adaptability index of the power grid nodes are respectively calculated by combining the correlation state between the nodes in the power grid network topology, the average distance, the impedance parameter and other data; on the basis of the condensation degree, the protection response sensitivity, the protection response matching degree and the weight coefficient, the attention degree of the target nodes is calculated in a weighted summation mode, so that key nodes are determined by comparing the attention degrees of different target nodes; the technical problem that the reliability is low when key nodes needing to be set are screened according to historical data in combination with personal experience during special operation of a power grid in the prior art is solved.
Description
technical field [0001] The present application relates to the field of electric power technology, and in particular to a method, device, terminal and medium for screening key nodes of power grid relay protection setting. Background technique [0002] With the rapid development of the scale of the national power grid, the grid structure is becoming more and more complex, which puts forward higher requirements for the safe and stable operation of the power grid. In addition to the normal operation mode, the power grid also has special operation modes caused by various reasons, such as DC blocking, common mode faults, natural disasters, high proportion of new energy access, abnormal operation during the "first set" period of major equipment, etc. Among them, the problems caused by the risk of safe and stable operation of the power grid may not only cause the instability of the power grid, but also cause the outage of some primary and secondary equipment, making the power grid i...
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IPC IPC(8): H04L41/12G06Q10/06G06Q50/06H02H7/26
CPCH04L41/12G06Q10/06393G06Q50/06H02H7/26
Inventor 涂思嘉孙嘉弥杜翠苏寅生马骞赵利刚
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD