Power outage means that after the power generation and power consumption are unbalanced in the independent control area of the power system, the power dispatching control mechanism is forced to manually issue dispatching instructions, manually open the power supply circuit breaker from the substation, increase the power generation output by means of power system mediation, take orderly power consumption measures, and stop the power system after the demand measurement response control load means are exhausted, and the power grid frequency and voltage are still lower than the national standards (regulations) to ensure the safe operation of the power grid, or the power grid operation indicators continue to develop in the direction of accidents.

legal ground

"Detailed Rules for the Implementation of the Electricity Law" Article 24 The State implements the policy of supplying and using electricity, and uses electricity safely, economically and in a planned way.

Measures for the supply and use of electric power shall be formulated by the State Council in accordance with this Law.