The application discloses a kind of self-adapting current protection method,
system, equipment and medium, belong to
relay protection technical field, method includes: analog
power output generates typical scene set, extracts fluctuation characteristics, constructs self-adapting model and generates dynamic reference, combines fault characteristic and outputs real-time threshold and executes protection decision.
System includes data generation and scene
simulation module, characteristic index extraction module, boundary parameter definition module, self-adapting model construction and reference generation module, real-time threshold output module, protection action decision module: the present application is by constructing
distributed power output generation model and self-adapting setting calculation model, in
steady state, linear follow-up is realized to
power fluctuation using
transfer function, in
transient state, current limit is calculated in combination with fault ride-through mechanism.Realize that protection setting value is in real time self-adapting matching to complex operating condition, avoid the risk of distribution network protection misoperation and refusal caused by
new energy output randomness, guarantee the stable operation of
system.