STANDBY DIESEL GENERATOR STATION AUTOMATIC CONTROL SYSTEM (SDGS ACS)

SDGS ACS is one of the main parts of emergency power supply systems of all channels of a unit’s safety system. SDGS ACS together with other adjacent systems assures control of startup, connection to a network and power operation of a DGU diesel-generator unit, control of excitation and protection of a generator, control of auxiliary equipment.

Main functions of SDGS ACS:

• automatic maintenance in readiness and startup of DGU on receipt of commands from the safety control system;
• automatic, automated, and manual control of DGU startup/stop from controls;
• automatic maintenance of DGU power operation;
• emergency or normal stop of DGU on actuation of protections;
• control of equipment of a compressor plant and an air dryer package;
• continuous automatic archiving, warning, displaying, and recording of technological and electrical parameters, events, and states during operation of SDGS ACS;
• automatic emergency and preliminary alarm with generation of generalized signals on display panels of MCR, BCR;
• transmission to unit’s IVS of data on values of technological parameters, modes of operation of SDGS ACS, state of protections, interlockings.

System advantages:

• redundancy of equipment assuring functions of startup and maintaining DGU at power;
• implementation of hardware and software for instrumentation and control equipment of SDGS ACS using own developments of SRPA “Impulse”, including equipment to control and regulate rotational speed of DGU, relay protections, and automation;
• monitoring of electrical and technological parameters of DGU, continuous self-diagnostics of all components of the system;
• ergonomic and user-friendly operator interface.

Implementation facility: Zaporizhzhya NPP.