Abstract: The device for cooperation control of the EMS and the DMS comprises: a calculation unit for calculating an AQI index on the basis of target system information and power flow calculation data; a determination unit which determines whether or not to perform reactive power cooperation control switching of the DMS on the basis of the calculated AQI index and the amount of needed local reserve reactive power (Qreq), and which determines a suppliable reactive power capacity on the basis of the amount of needed local reserve reactive power (Qreq) and a suppliable reactive power range; and a control unit which transmits a cooperation control mode switching control signal so as to switch the DMS to a reactive power cooperation control mode if it is determined that reactive power cooperation control switching of the DMS is to be performed, and which controls the DMS to supply reactive power.

Abstract: The device for cooperation control of the EMS and the DMS comprises: a calculation unit for calculating an AQI index on the basis of target system information and power flow calculation data; a determination unit which determines whether or not to perform reactive power cooperation control switching of the DMS on the basis of the calculated AQI index and the amount of needed local reserve reactive power (Qreq), and which determines a suppliable reactive power capacity on the basis of the amount of needed local reserve reactive power (Qreq) and a suppliable reactive power range; and a control unit which transmits a cooperation control mode switching control signal so as to switch the DMS to a reactive power cooperation control mode if it is determined that reactive power cooperation control switching of the DMS is to be performed, and which controls the DMS to supply reactive power.

Abstract: A switch according to the invention comprises a enclosure that is solid insulated and includes an electric power source side bushing portion, an electric load side bushing portion, and an accommodation body portion having air filled therein; a main circuit switch installed, for each pole, and having a vacuum interrupter that switches an electric power circuit by receiving a switching driving force from a common actuator; and an earth switch installed including a first fixed contactor to be earthed; a second fixed contactor electrically connected to the electric power source side connection conductor; and a movable blade connected to the common actuator, and movable to a first position for contacting the first fixed contactor and to a second position for contacting the second fixed contactor, by the switching driving force from the common actuator.

Abstract: A solid insulated switchgear having at least one circuit switches for switching a three-pole AC circuit includes a plurality of bus-bars for pole. Each of the bus-bars for pole being providing correspondingly for each pole comprises a ring-shaped bus-bar portion electrically connecting the arc extinguishing mechanisms for the same pole, and each having an internal electrical conductor portion and an external solid insulated mold portion in which the conductor portion is built; and a plurality of extended connecting portions respectively extended from the ring-shaped bus-bar portion while being space apart from one another in a circumferential direction so that the plurality of circuit switches are connected in the state in which the plurality of circuit switches are separated from one another.

Abstract: Disclosed is an external connector for a solid insulated load break switchgear. A semi-conductive layer for uniformly distributing an inner field is formed in a body part of a connector to uniformly distribute an inner field. This may prevent partial lowering of an insulating performance of the connector to enhance the insulating performance of the connector. Furthermore, a semi-conductive layer for uniformly distributing an outer field is formed between the connector and a bushing coupled to an upper end of the connector, and between the connector and a plug coupled to a lower end of the connector. This may allow an electric field to be uniformly distributed to a part connected to a ground surface of an arc extinguishing part.

Abstract: A switch according to the invention comprises a enclosure that is solid insulated and includes an electric power source side bushing portion, an electric load side bushing portion, and an accommodation body portion having air filled therein; a main circuit switch installed, for each pole, and having a vacuum interrupter that switches an electric power circuit by receiving a switching driving force from a common actuator; and an earth switch installed including a first fixed contactor to be earthed; a second fixed contactor electrically connected to the electric power source side connection conductor; and a movable blade connected to the common actuator, and movable to a first position for contacting the first fixed contactor and to a second position for contacting the second fixed contactor, by the switching driving force from the common actuator.

Abstract: A switchgear for a ground distribution line includes a base frame, vacuum switch units each installed on the base frame and configured by laying a first vacuum interrupter and a second vacuum interrupter within an epoxy resin mold, the first vacuum interrupter opening or closing a main circuit between a power source side and a load side and the second vacuum interrupter opening or closing a ground circuit, a main circuit interface protruding from one side of each vacuum switch unit, and a phase connector interface protruding from the other side of each vacuum switch unit in the same direction as the main circuit interface.

Abstract: A solid insulated switchgear having at least one circuit switches for switching a three-pole AC circuit includes a plurality of bus-bars for pole. Each of the bus-bars for pole being providing correspondingly for each pole comprises a ring-shaped bus-bar portion electrically connecting the arc extinguishing mechanisms for the same pole, and each having an internal electrical conductor portion and an external solid insulated mold portion in which the conductor portion is built; and a plurality of extended connecting portions respectively extended from the ring-shaped bus-bar portion while being space apart from one another in a circumferential direction so that the plurality of circuit switches are connected in the state in which the plurality of circuit switches are separated from one another.

Abstract: Provided is an optimized system voltage control method through coordinated control of reactive power source, which analyzes the location for reactive power compensation and the effect of applying compensation equipment by calculating the reactive power and voltage sensitivity of a power system, thus improving the voltage quality of the power system.

Abstract: A monitoring system using a real-time simulator, providing a simulation environment of a real electric power system that enables testing of a new electric power system control facility. The operation of the new electric power system control facility and effects thereof on a real electric power system can be evaluated before actual installation. The monitoring system includes a test piece installed in an electric power system; a simulator connected to the test piece, and deriving electric power system simulation data by simulating the electric power system with respect to the test piece; a multimedia interface (MMI) platform interworking with the simulator, providing the simulator with electric power system status data for simulating the electric power system, and receiving the electric power system simulation data from the simulator; and an MMI client interworking with the MMI platform to display the electric power system simulation data from the MMI platform.

Abstract: Disclosed is an external connector for a solid insulated load break switchgear. A semi-conductive layer for uniformly distributing an inner field is formed in a body part of a connector to uniformly distribute an inner field. This may prevent partial lowering of an insulating performance of the connector to enhance the insulating performance of the connector. Furthermore, a semi-conductive layer for uniformly distributing an outer field is formed between the connector and a bushing coupled to an upper end of the connector, and between the connector and a plug coupled to a lower end of the connector. This may allow an electric field to be uniformly distributed to a part connected to a ground surface of an arc extinguishing part.

Abstract: A switchgear for a ground distribution line includes a base frame, vacuum switch units each installed on the base frame and configured by laying a first vacuum interrupter and a second vacuum interrupter within an epoxy resin mold, the first vacuum interrupter opening or closing a main circuit between a power source side and a load side and the second vacuum interrupter opening or closing a ground circuit, a main circuit interface protruding from one side of each vacuum switch unit, and a phase connector interface protruding from the other side of each vacuum switch unit in the same direction as the main circuit interface.

Abstract: A monitoring system using a real-time simulator, providing a simulation environment of a real electric power system that enables testing of a new electric power system control facility. The operation of the new electric power system control facility and effects thereof on a real electric power system can be evaluated before actual installation. The monitoring system includes a test piece installed in an electric power system; a simulator connected to the test piece, and deriving electric power system simulation data by simulating the electric power system with respect to the test piece; a multimedia interface (MMI) platform interworking with the simulator, providing the simulator with electric power system status data for simulating the electric power system, and receiving the electric power system simulation data from the simulator; and an MMI client interworking with the MMI platform to display the electric power system simulation data from the MMI platform.

Abstract: Provided is an optimized system voltage control method through coordinated control of reactive power source, which analyzes the location for reactive power compensation and the effect of applying compensation equipment by calculating the reactive power and voltage sensitivity of a power system, thus improving the voltage quality of the power system.

Abstract: The present invention relates to novel oxazolidinone derivatives, their pharmaceutically acceptable salts and a process for the preparation thereof. More particularly, the present invention relates to oxazolidinone derivatives having pyridine or pyrimidine moeity substituted by heterocycle and heteroaromaticcycle at 4-position of phenyl ring. The compounds of the present invention have wide antibacterial spectrum, superior antibacterial activity and low toxicity, such that the compound of this invention can be used as an antibacterial agent.

Abstract: The present invention relates to novel oxazolidinone derivatives, their pharmaceutically acceptable salts and a process for the preparation thereof. More particularly, the present invention relates to oxazolidinone derivatives having pyridine or pyrimidine moeity substituted by heterocycle and heteroaromaticcycle at 4-position of phenyl ring. The compounds of the present invention have wide antibacterial spectrum, superior antibacterial activity and low toxicity, such that the compound of this invention can be used as an antibacterial agent.