Hydroelectric units black start-up ability verification test method

Abstract

The invention provides a test method for validating the black start ability of a hydroelectric generating set, relating to the test method for a hydroelectric generating set and aiming to provide a test method for validating the black start ability of the hydroelectric generating set under the circumstance of unexpected power failure due to an accident of a power network. The method comprises the following steps in any sequence that: the black start ability of excitation equipment is validated by the test; the black start ability of a speed controller and an oil hydraulic system is validated by the test; the black start ability of auxiliary equipment of the generating set is validated by the test; the ability of the generating set to protect self when the black start is not successful is validated by the test; and the black start ability of the generating set is evaluated. The test method provides a basis for the black start operation in case of the accident, avoids the expansion of the accident because the black start operation is performed on the hydroelectric generating set without the black start ability, and is suitable for a hydraulic power plant or a hydraulic station to stimulate and validate whether the hydroelectric generating set has the black start ability.

Description

technical field [0001] The invention relates to a test method for verifying the black start capability of a hydroelectric generating set in a hydroelectric power plant under the condition of a power grid accident and unexpected power outage. Background technique [0002] Black start means that after the entire power grid or a certain power grid collapses and shuts down due to a fault, the system is completely powered off and is in a "black" state. capacity, gradually expand the scope of system recovery, and finally achieve the recovery and power supply of the entire system. [0003] The black start of the hydroelectric unit refers to the use of the characteristics of the hydroelectric unit to complete the self-start of the unit in the case of the disappearance of the plant AC power and the opening of the water inlet gate, or to use the emergency backup power of the hydropower station (station) (such as a diesel generator, etc.) to start the water inlet Gate and restore the ...

AI Technical Summary

Problems solved by technology

[0004] At present, the technical research on black start mainly involves the research on the recovery ability of power grid and the black start capability of thermal power units, but there is no relevant technical literature on the research on the black start capability of hydropower generating units in hydropower plants, which is one of the black start power sources. It is open, and there is no open test method for the black start capability verification of hydroelectric generating units in hydropower plants