TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The system further comprises a temperature and pressure reducing device, an exhaust device and a steam turbine exhaust isolating valve. The temperature and pressure reducing device is used for starting electricity generation plant, reducing temperature and pressure of steam output from the boiler sub-system, where the temperature of steam does not reach the set value, and conveying into seawater desalination system. One end of the exhaust device is connected with the steam turbine sub-system, and its other end is connected with a steam turbine exhaust separating valve and the seawater desalination system. The boiler comprises a boiler, a boiler water feeding pump, an oxygen remover, a boiler control device and a boiler emergency shutdown device. The boiler is sequentially provided with the boiler feed pumps. The deaerator is connected with the seawater desalination system. The boiler control device is respectively connected with the boiler. The boiler feed pump is connected with deaerator. The boiler emergency shutdown device is used for boiler shutdown, when there is a need. The emergency stop signal is transmitted to steam turbine subsystem, and simultaneously audible and visual alarm signal is transmitted to the steam turbine subsystem. The operation of the steam turbine subsystem is stopped, after receiving emergency stop signal. The boiler control device comprises a combustion control module, a level control module, a main steam temperature control module and a deaerator liquid level control module. The combustion control module is used for controlling the combustion of the boiler combustion. The level control module is used for controlling the boiler water level. The main steam temperature control module is used for controlling the boiler main steam temperature. The deaerator liquid level control module is used for controlling the deaerator water tank. The seawater desalination system comprises a seawater desalination device, a condensed water pump, a condensed water processing device, a seawater desalination control device and a seawater desalination emergency shutdown device. The seawater desalination device is in turn connected with condensed water processing device through the condensed water pump. The condensed water processing device is connected with the deaerator. The seawater desalination device is used for desalination of distilled water, first-effect condensed water and brine. The distilled water is transported to the seawater desalination device through distilled water pump. The brine is transported to the seawater desalination device through the concentrated salt water pump. The first effect condensed water is transported to the boiler subsystem through the first effect condensate pump, and then conveyed to the first effect condensate treatment device for processing. The seawater desalination emergency shutdown device is used for desalination unit shutdown. The emergency stop signal is transmitted to steam turbine subsystem, and simultaneously audible and visual alarm signal is transmitted to steam turbine subsystem. The operation of steam turbine subsystem is stopped after receiving the emergency stop signal. The seawater desalination control device comprises a first-effect condensed water level control module, a distilled water level control module, a seawater flow control module and a vacuum control module. The first efficiency condensing water level control module is used to control the condensate water level of the first desalination device. The distilled water level control module is used to control the water level of distilled water desalination device. The seawater flow control module is used to control the seawater inflow in the seawater desalination device during seawater desalination process. The vacuum control module is used to start hydro-generation factory system, and make desalination device pump vacuum to the set value. The generator subsystem comprises a generating set and a generator emergency stop device. The generating set is connected with the steam turbine sub-system. The generator emergency stop device is used for the generating set shutdown, when there is need. The emergency stop signal is transmitted to steam turbine subsystem. The operation of steam turbine subsystem is stopped after receiving the emergency stop signal. The steam turbine sub-system comprises a steam turbine, a steam turbine control device and a steam turbine emergency shutdown device. The steam turbine is connected with the boiler, exhaust device and generator set. The steam turbine control device is respectively connected with steam turbine, generating set and seawater desalination device. The steam turbine emergency shutdown device is used for steam turbine machine shutdown, when there is need. The emergency stop signal is transmitted to the boiler emergency shutdown device and generator emergency shutdown device, and simultaneously audible and visual alarm signal is transmitted to both the devices. The operation of boiler emergency shutdown and generator emergency shutdown devices are stopped after receiving the emergency stop signal. The emergency stop signal is transmitted to stream turbine shutdown machine after receiving the seawater desalination emergency shutdown device. The emergency stop signal is transmitted to generator emergency shutdown device, after receiving from steam turbine shutdown device. The emergency stop signal is transmitted to the boiler emergency shutdown device, and simultaneously audible and visual alarm signal is transmitted to boiler emergency shutdown device. The operation of boiler emergency shutdown is stopped after receiving the emergency stop signal. The steam turbine control device comprises a rotating speed control module and a steam turbine valve position control module. The rotating speed control module is used for controlling the rotating speed of steam turbine so as to reach rated speed, generator set and grid. The steam turbine valve position control module is used for controlling a power generation set so as to reach the rated generating power. The steam turbine control device further comprises a light emitting power load control module or an exhaust pressure control module. The light emitting power load control module is used for controlling the generated energy of generator subsystem. The exhaust pressure control module is used for controlling the seawater desalination system for producing distilled water.