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Substation power system is the to protect substation security , reliable operation is an important part , which is mainly composed of three parts of the station with AC power supply systems , DC power systems and AC uninterruptible power supply system . Stability of station equipment and reliable operation of the power system substation production station power system problems , will directly or indirectly affect the substation safety and reliable operation , severe will expand the scope of the accident , resulting in failure blackouts . Substation power of each subsystem decentralized design , the screen of an independent group , equipment manufactured by different vendors , installation , commissioning , power supply management system also assign different professionals , the lack of a unified design and management , preliminary design of substation stage , basically not the station into consideration the scope of the power system . Many problems have been difficult to adapt to the development of substation automation technology . The existing station with power supply in the integration of resources, level of automation , management mode , there are still much room for optimization , compact , economical and reliable substation integration of AC and DC power mode has broad application prospects . Rational allocation of station power load specification power supply wiring station power system security, stability , reliable operation of the foundation . In this paper, the substation power system key technologies , the station electricity load configuration , to come to the station with a load of configuration principle to reach the central station electricity load configuration to provide the basis for the purpose . AC power from the smart charging module online self-test , three aspects of the inverter technology , comprehensive self - transformation instance through the substation on the benefits of smart AC power applications , the design of a high-frequency switching power supply module output regulator , steady flow accuracy and ripple coefficient of online self-test approach , derived by comparing the use of the principle of the inverter power supply module in the substation . Finally, the station power integration program discusses , from the condition-based maintenance and asset life - cycle cost management perspective , the proposed solutions applicable to of digital substation integration Station power . With the construction, renovation and operation management of the power system in guiding the station , the station with power system security and reliability , and enhance maintainability and manageability of great significance .
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