Computer monitoring system introduced by the ELIN company, the plant on October 28, 1999 four generating units put into operation, has become the main power plant in southern Hunan province, to improve the power grid structure of Hunan has played a positive role. According to terms of the contract requirements for both Chinese and foreign, Dayuandu hydropower four units should have the black start function, in October 22, 1999 Dayuandu part engineering and technical personnel in conjunction with the Austrian company Yilin foreign experts on plant No.2 generator successfully conducted a black start test.

This paper will start generating set black problem, in terms of its purpose, significance, design, programming, operation, and so do some research, hoping to find something useful summary from the experimental analysis of the process, in order to achieve further improvement, promotion The purpose of generating black start, provide a reliable guarantee for the safe and economic operation of power systems. Starter motor bearing lubrication system pumps energy, under the control of black start the program, immediately shut down the unit from standby to start into a stationary state power state, to achieve rapid recovery from electricity power plant, near zone load, single supply and distribution lines as well as regional isolated power supply load, or rapid dispersion and disintegration of the system and network in the region under the command dispatcher, so as to achieve the purpose of expanding the restriction system accident.

Black start, by definition that is the whole plant at the power plant outage, short-term or longer interrupt AC auxiliary power supply, and the case of a generator governor hydraulic oil pressure regulation system remained relatively stable 20V DC battery supply only rely on fat 2 black start of significance in the power system, the case of system failure to make the grid collapse caused by large area power outage, the power plant will be a total power plant, factory and uninterrupted power supply to the user using the AC power goes off, the majority of power plants on the system collapse incompetent help, Only start the backup diesel generators for power arc door and sump, from the opposite side of the line to wait for the system to send power to the main transformer charging to restore auxiliary power, lack of ability to start generating units to the system power transmission. On how to take the initiative to save the system failure, restore power as quickly as possible from near area load, a single system for power transmission lines and to restore the system to normal operation, while efforts.

After 72 turbine generators on the 2nd black start process black start test preparations were made, the foreign staff of adjacent turbine generator started operating on the 2nd button, immediately and automatically start the generator, standby group speed n> 95%, DC Auto Power flashing people, about the 2nd time in 1min generator step-up transformer with 1 to 95% of rated voltage, the excitation current from the excitation power supply exit, generator excitation control automatically put into work units, will generate electricity Machine voltage rises rating. At the same time, I plant with a rated voltage to the bus segment, the 2nd generator AC auxiliary machinery and equipment have been automatically starts the generator into the normal working condition.