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AI for protection systems

AI for protection systems

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The reliable operation of large power systems with small stability margins is highly dependent on control systems and protection devices. Progress in the field of microprocessor systems and demanding requirements in respect of the performance of protective relays are the reasons for digital device applications to power system protection. The superiority of numeric protection over its analogue alternatives is attributed to such factors as accurate extraction of the fundamental voltage and current components through filtering, functional benefits resulting from multi-processor design and extensive self-monitoring, etc. However, all these reasons have not led to a major impact on speed, sensitivity and selectivity of primary protective relays, and the gains are only marginal; this is so because conventional digital relays still rely on deterministic signal models and a heuristic approach for decision making, so that only a fraction of the information contained within voltage and current signals as well as knowledge about the plant to be protected is used.

Inspec keywords: power system reliability; power system protection; power system stability; power engineering computing; artificial intelligence; relay protection; power system relaying

Other keywords: artificial intelligence; protective relays; protection devices; reliable operation; protection systems; large power systems; microprocessor systems; small stability margins; control systems; AI

Subjects: Power system protection

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