WO2014046466A1 - Ems 및 dms의 협조제어 장치 및 방법 - Google Patents
Ems 및 dms의 협조제어 장치 및 방법 Download PDFInfo
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- WO2014046466A1 WO2014046466A1 PCT/KR2013/008416 KR2013008416W WO2014046466A1 WO 2014046466 A1 WO2014046466 A1 WO 2014046466A1 KR 2013008416 W KR2013008416 W KR 2013008416W WO 2014046466 A1 WO2014046466 A1 WO 2014046466A1
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- reactive power
- dms
- ems
- cooperative control
- power supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B15/00—Systems controlled by a computer
- G05B15/02—Systems controlled by a computer electric
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/50—Controlling the sharing of the out-of-phase component
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Definitions
- the present invention relates to an apparatus and method for cooperative control of smart EMS and DMS.
- the present invention relates to an EMS and DMS cooperative control apparatus and method for cooperatively controlling EMS and DMS to maintain the voltage quality of a system.
- an individual voltage compensator eg, a capacitor, a reactor, a flexible AC transmission system (FACTS), etc.
- FACTS flexible AC transmission system
- the operation method using the voltage compensator is effective in maintaining the voltage of each substation, it is inefficiently operated because it does not consider the reactive power sources installed nearby to maintain the voltage quality of the entire system.
- VMS voltage management system
- VMS divides the entire power system into several electrically controlled voltage control zones for voltage quality control through voltage control.
- VMS selects representative substations for each voltage controlled area.
- the VMS coordinates and controls reactive power sources (eg generators, capacitors, reactors, FACTS, etc.) installed in the local system to maintain a constant voltage (eg 1.0 pu) at selected representative substations. .
- VMS is to control the voltage of transmission substation (154kV or more) and is installed in the central energy management system (EMS), or it is configured and operated as a separate device.
- EMS central energy management system
- the distribution system below 22.9kV is treated as a load and is not included in the operation target, but is made through an automatic voltage regulator (AVR) of the transformer.
- AVR automatic voltage regulator
- the AVR operates independently of the EMS and maintains the secondary voltage of the 154kV / 22.9kV transformer within a certain range.
- DMS distribution management system
- the current grid 10 is associated with a plurality of loads 20 and a plurality of generators 30 (eg, distributed power supplies, etc.). That is, the power grid 10 is further connected to distributed power sources such as wind, solar, tidal, energy storage device, fuel cell.
- distributed power sources such as wind, solar, tidal, energy storage device, fuel cell.
- the EMS 40 (or VMS) and the DMS 50 are installed and operated for the entire operation of the power system including maintaining the voltage quality of the power grid. That is, EMS or VMS is connected to the transmission system to maintain the voltage quality of the transmission system, and DMS is connected to the distribution system to maintain the voltage quality of the distribution system.
- the transmission system maintains the voltage quality of the transmission system using the voltage control through the individual voltage compensator installed in the transmission class substation in the EMS.
- the voltage control method using the VMS may be used instead of the voltage control method using the voltage compensator.
- the voltage control of the power transmission system by EMS (or VMS) and the voltage control of the power distribution system by DMS are performed independently, but the power transmission system and the power distribution system are interconnected through a 154kV / 22.9kV transformer.
- the energy resources connected to can be fully utilized in the transmission system.
- the voltage of the power transmission system is appropriately controlled through EMS (or VMS) in order to ensure the maximum reserve of pure reactive power in the system in order to prevent widespread power outage due to voltage instability in case of an accident.
- EMS or VMS
- DMS linked to the distribution system is responsible for the operation of the complex distribution system, including the control of the voltage of the distribution system. That is, the DMS cooperatively controls various distributed power supplies and various voltage compensation devices connected to the distribution system to maintain the voltage of the distribution system within a certain voltage range.
- Korean Patent Laid-Open Publication No. 10-2010-0047726 (name: Optimal grid voltage control method through reactive power source cooperative control) refers to a technique for performing cooperative control of a reactive power source using a change amount of reactive power.
- Korean Patent No. 10-1039425 (name: voltage control system and voltage control method of the power system) refers to a technique for performing cooperative control of the reactive power source by using the reactive power margin of the reactive power source.
- the present invention has been proposed in view of the above-described circumstances, and the power transmission system provides a reserve power insufficient in reactive power sources of the distribution system based on the reactive power reserve power detected by the power transmission system and the required reactive power reserve power calculated by the EMS.
- An object of the present invention is to provide a cooperative control apparatus and method for EMS and DMS.
- a cooperative control apparatus for an EMS and a DMS includes an input unit for receiving EMS information from an EMS and receiving DMS information from a DMS; An operation unit for calculating an AQI index based on the target system information and the bird calculation data included in the input EMS information; Based on the calculated AQI index and the amount of reactive power reserve (Qreq) included in the input EMS information, it is determined whether the DMS switches to reactive power cooperative control, and the amount of reactive power reserve (Qreq) included in the EMS information is determined. And a determination unit to determine the amount of reactive power supply available based on the reactive power supply range included in the DMS information.
- the cooperative control mode switch control signal is transmitted to switch the DMS to the reactive power cooperative control mode, and the DMS is controlled to supply reactive power corresponding to the determined reactive power supply amount to a higher layer. It includes a control unit.
- the input unit receives EMS information including target system information, local representative voltage reference value (Vref), current calculation data, and local reactive power reserve (Qreq) from the EMS, and the reactive power control reference value (Qref), invalid from the DMS.
- the arithmetic unit Based on the target system information included in the EMS information, the arithmetic unit shortens the target regional system into one equivalent busbar, connects a virtual generator to the equivalent busbar, and changes the reactive power output in the set range while performing bird flow calculation in each case. To perform.
- the calculation unit detects the vertex of the curve in the XY graph generated using the reduced voltage value Va of the target busbar and the reactive power amount Qc of the virtual generator, and calculates the y coordinate size of the detected vertex AQI. Calculate with exponent
- the determination unit determines that the reactive power cooperative control is switched.
- the determination unit judges the local reactive power reserve Qreq as the reactive power supply available, and the local reactive power reserve Qreq is invalid. If the power supply range is exceeded, the maximum value of the reactive power supply range is determined as the amount of reactive power supply.
- a cooperative control method for EMS and DMS comprising: receiving EMS information and DMS information by an input unit; Calculating, by the operation unit, the AQI index based on the target system information and the bird calculation data included in the input EMS information; Determining, by the determination unit, whether the DMS switches the reactive power cooperative control based on the calculated AQI index and the amount of reactive power reserve Qreq in the region included in the input EMS information; Transmitting, by the controller, the cooperative control mode switching control signal to switch the DMS to the reactive power cooperative control mode when it is determined in the determining step that the reactive power cooperative control switching of the DMS is performed; Determining, by the determining unit, the amount of reactive power supply available based on the amount of reactive power reserve Qreq in the region of the input EMS information and the range of available reactive power supply of the input DMS information; And controlling, by the controller, the DMS to supply reactive power corresponding to the determined reactive power supply available
- the receiving step may include receiving, by the input unit, EMS information including target system information, region representative voltage reference value (Vref), current calculation data, and required reactive power reserve amount (Qreq) in the region; And receiving, by the input unit, DMS information including a reactive power control reference value (Qref) and a reactive power supply range available from the DMS.
- EMS information including target system information, region representative voltage reference value (Vref), current calculation data, and required reactive power reserve amount (Qreq) in the region
- DMS information including a reactive power control reference value (Qref) and a reactive power supply range available from the DMS.
- the calculating of the AQI index may include, by the calculating unit, shortening the target area system into one equivalent bus based on the target system information included in the EMS information; Connecting the virtual generator to the equivalent bus line by the operation unit to perform tidal current calculation in each case while changing the reactive power output within a setting range; Generating, by the operation unit, an XY graph generated by using the reduced voltage value Va of the target bus bar and the reactive power amount Qc of the virtual generator among the tide calculation results; Detecting a vertex of a curve in the generated XY graph by the calculation unit; And calculating, by the calculating unit, the y coordinate size of the detected vertex as an AQI index.
- the determination unit determines that the reactive power cooperative control switching is performed if the calculated AQI index is less than the reactive power control reference value Qref.
- the determination unit determines that the amount of reactive power reserve Qreq in the region is available for reactive power supply if the amount of reactive power reserve Qreq in the region is within the range of available reactive power supply. However, if the required reactive power reserve (Qreq) in the region exceeds the reactive power supply range, the maximum value of the reactive power supply range is determined as the reactive power supply amount.
- the cooperative control apparatus and method of the EMS and DMS provides a reserve power insufficient in the reactive power sources of the distribution system on the basis of the reactive power reserve force detected in the transmission system and the reactive power reserve force calculated by the EMS.
- the system voltage quality can be efficiently maintained, and the effective system voltage quality can be maintained even when the reactive power source is increased.
- 1 to 4 are diagrams for explaining a conventional cooperative control method.
- FIG. 5 is a block diagram illustrating an apparatus for cooperative control of an EMS and a DMS according to an embodiment of the present invention.
- FIG. 6 is a diagram for describing an input unit of FIG. 5.
- FIG. 6 is a diagram for describing an input unit of FIG. 5.
- FIG. 7 and 8 are views for explaining the calculation unit of FIG.
- FIG. 9 is a flowchart illustrating a cooperative control method of an EMS and a DMS according to an embodiment of the present invention.
- FIG. 10 is a flowchart for explaining an AQI index calculation step of FIG. 9.
- FIG. 11 is a flowchart for explaining a step of supplying a reactive power supply capable amount of FIG. 9 to a higher system
- FIG. 5 is a block diagram illustrating an apparatus for cooperative control of an EMS and a DMS according to an embodiment of the present invention.
- 6 is a diagram for describing an input unit of FIG. 5
- FIGS. 7 and 8 are diagrams for explaining an operation unit of FIG. 5.
- the cooperative control apparatus 100 of the EMS and the DMS includes an input unit 110, an operation unit 130, a determination unit 150, a control unit 170, and a delivery unit 190.
- the cooperative control device 100 of the EMS and DMS is installed in the central control center and each regional power supply center, and can transmit and receive data (eg, EMS information, DMS information, etc.) with the EMS 200 and the DMS 300. It is connected through a communication line.
- the input unit 110 receives EMS information for cooperative control of the EMS 200 and the DMS 300. That is, as shown in FIG. 6, the input unit 110 calculates the target system information from the EMS 200, a local representative voltage reference value Vref calculated through the optimization function of the EMS 200, and a tidal current calculation for AQI index calculation. Data is received from the EMS, including the reactive power reserve (Qreq) in the region. In this case, the input unit 110 may receive EMS information including a voltage allowable range and a representative voltage value measured value V P from the EMS 200.
- the input unit 110 receives DMS information for cooperative control of the EMS 200 and the DMS 300. That is, as shown in FIG. 6, the input unit 110 receives the DMS information including the reactive power control reference value Qref and the reactive power supply range from the DMS 300. In this case, the input unit 110 may receive the DMS information further including the transformer AVR control signal and the reactive power output measurement value Q D from the DMS 300.
- the calculator 130 calculates the AQI index based on the target system information and the bird calculation data input through the input unit 110. That is, as shown in FIG. 7, the operation unit 130 shortens the target area system into one equivalent bus (for example, the equivalent power source 410 and the equivalent load 420) based on the target system information.
- the calculating unit 130 designates a boundary line with a neighboring local system.
- the calculating unit 130 connects a virtual generator 430 (or a virtual synchronization controller) to the bus line to adjust the reactive power output to a range of 0 to 500 MVAR.
- the calculation unit 130 performs algal calculation in each case. As shown in FIG.
- the calculating unit 130 displays the voltage value Va of the abbreviated target bus bar and the reactive power amount Qc of the virtual generator 430 on the XY graph.
- the calculating unit 130 calculates the calculated y coordinate size (absolute value) as an AQI index.
- the determination unit 150 cooperates with the reactive power of the DMS 300 (or the QMS 320) based on the AQI value calculated by the operation unit 130 and the required amount of reactive power reserve Qreq in the region input from the input unit 110. Determine whether to switch control. At this time, the determination unit 150 determines that the reactive power cooperative control switching of the DMS 300 (or the QMS 320) when the AQI is less than the reactive power control reference value Qref.
- the determination unit 150 determines the available amount of reactive power supply of the distribution system based on the required amount of reactive power reserve Qreq in the region from the input unit 110 and the available range of reactive power supply. That is, the determination unit 150 determines the amount of reactive power supply that can provide reactive power required by the upper system in the distribution system by comparing the reactive power reserve Qreq in the region with the available range of reactive power supply. At this time, the determination unit 150 determines that the reactive power reserve power Qreq in the region as the reactive power supply available amount if the reactive power reserve power Qreq in the region is within the available range of reactive power supply. The determination unit 150 determines the maximum value of the reactive power supply allowable range (ie, Qref-max) as the reactive power supply allowable amount when the required reactive power reserve Qreq in the region exceeds the reactive power supply allowable range.
- the maximum value of the reactive power supply allowable range ie, Qref-max
- the control unit 170 generates a cooperative control mode switching control signal when the determination unit 150 determines that the reactive power cooperative control switching of the DMS 300 is performed.
- the control unit 170 transmits the cooperative control mode switching control signal that is generated. 190).
- the control unit 170 transmits the control signal for controlling to block the upper transformer AVR as the cooperative control mode switching control signal to the transmitter 190. In this way, the controller 170 switches the DMS 300 (or the QMS 320) to the reactive power cooperative control mode.
- the controller 170 updates the reactive power supply available amount determined by the determination unit 150 to the reactive power control reference value Qref.
- the controller 170 transmits the updated reactive power control reference value Qref to the transmitter 190.
- the controller 170 controls the DMS 300 (or the QMS 320) to supply reactive power corresponding to the reactive power control reference value Qref to an upper system (ie, a power transmission system).
- the controller 170 When the transmission of the updated reactive power control reference value Qref is completed, the controller 170 generates a recalculation request signal for the local representative voltage reference value Vref. The controller 170 transmits the generated recalculation request signal to the transmitter 190. The transmitter 190 transmits the recalculation request signal to the EMS 200.
- the EMS 200 receives the updated reactive power control reference value Qref from the DMS 300 to recalculate the local representative voltage reference value Vref using the optimization function.
- the EMS 200 calculates a difference value? Q between the existing reactive power control reference value Qref_old and the updated reactive power control reference value Qref as shown in Equation 1 below.
- the EMS 200 updates the system reactive power reserve Qmax by summing the difference values ⁇ Q, as shown in Equation 2 below.
- the EMS 200 updates the existing reactive power control reference value Qref_old to the updated reactive power control reference value Qref to calculate the next region representative voltage reference value Vref.
- the EMS 200 calculates a value Q of an objective function (that is, Equation 4 below) while changing the representative bus voltage value Vp for each region.
- the EMS 200 calculates the regional representative bus voltage value Vp at which the value Q of the calculated objective sum is maximum, as the regional representative voltage reference value Vref.
- the transmitter 190 transmits the cooperative control mode switch control signal received from the controller 170 to the DMS 300 (or the QMS 320). At this time, the transmitter 190 transmits a cooperative control mode switching control signal to the DMS 300 (or the QMS 320) to control the control signal to block the upper transformer AVR. Accordingly, the DMS 300 (or QMS 320) that receives the cooperative control mode switch control signal blocks the operation of the transformer AVR and switches to the cooperative control mode.
- the transmitter 190 transmits the reactive power control reference value Qref received from the controller 170 to the DMS 300 (or QMS 320). Accordingly, the DMS 300 (or the QMS 320) cooperatively controls reactive power sources in the distribution system and transmits reactive power corresponding to the reactive power control reference value Qref received from the transmitter 190 to the transmission system. Supply.
- the transmitter 190 transmits the recalculation request signal received from the controller 170 to the EMS 200. Accordingly, the EMS 200 receiving the recalculation request signal recalculates an optimization function for determining the local representative voltage reference value Vref to update the local representative voltage reference value Vref.
- FIG. 9 is a flowchart illustrating a cooperative control method of an EMS and a DMS according to an embodiment of the present invention.
- FIG. 10 is a flowchart for describing an AQI index calculation step of FIG. 9, and
- FIG. 11 is a flowchart for explaining a step of supplying a reactive power supply capable amount of FIG. 9 to a higher system.
- the cooperative control apparatus 100 receives EMS information from the EMS 200.
- the cooperative control apparatus 100 receives DMS information from the DMS 300 (S100). That is, the input unit 110 is the target system information from the EMS 200, the regional representative voltage reference value (Vref) calculated through the optimization function of the EMS 200, the tidal current calculation data for the AQI index calculation, the amount of reactive power reserve in the region required Receive EMS information including (Qreq).
- the input unit 110 receives the DMS information including the reactive power control reference value Qref and the reactive power supply range available from the DMS 300.
- the cooperative control apparatus 100 calculates an AQI index based on the input EMS information and the DMS information (S200). That is, the calculator 130 calculates the AQI index based on the target system information and the bird calculation data included in the EMS information. This will be described in more detail with reference to FIG. 10.
- the calculating unit 130 shortens the target area system into one equivalent bus line based on the target system information (S210), and designates a boundary line with a neighboring area system (S220).
- the calculating unit 130 connects a virtual generator 430 (or a virtual synchronization controller) to the bus line to adjust the reactive power output to a range of 0 to 500 MVAR.
- the calculating unit 130 performs a tidal current calculation in each case according to the adjustment of the reactive power output (S230).
- the calculation unit 130 generates an XY graph of the voltage value Va of the abbreviated target busbar and the reactive power amount Qc of the virtual generator 430 among the tide calculation results (S240).
- the cooperative control apparatus 100 determines whether to switch the reactive power cooperative control of the EMS 200 based on the calculated AQI value and the EMS information (S300). That is, the determination unit 150 determines whether to switch the reactive power cooperative control of the DMS 300 (or the QMS 320) based on the AQI value and the local reactive power reserve power requirement Qreq. At this time, the determination unit 150 determines that the reactive power cooperative control switching of the DMS 300 (or the QMS 320) when the AQI is less than the reactive power control reference value Qref.
- the cooperative control device 100 controls to switch the DMS 300 to the reactive power cooperative control mode (S400). That is, the control unit 170 generates a cooperative control mode switch control signal when the determination unit 150 determines that the reactive power cooperative control switching of the DMS 300 is performed.
- the controller 170 transmits the generated cooperative control mode switch control signal to the transmitter 190.
- the transmitter 190 transmits the cooperative control mode switch control signal received from the controller 170 to the DMS 300 (or the QMS 320). At this time, the transmitter 190 transmits a cooperative control mode switching control signal to the DMS 300 (or the QMS 320) to control the control signal to block the upper transformer AVR. Accordingly, the DMS 300 (or QMS 320) that receives the cooperative control mode switch control signal blocks the operation of the transformer AVR and switches to the cooperative control mode.
- the cooperative control apparatus 100 controls to supply an available amount of reactive power of the distribution system to an upper system (for example, a power transmission system) (S500). This will be described in more detail with reference to FIG. 11.
- an upper system for example, a power transmission system
- the determination unit 150 compares the reactive power reserve Qreq in the region with the reactive power supply possible range. At this time, the determination unit 150 determines whether the reactive power reserve power requirement Qreq in the region exists within the available range of reactive power supply. If the determination unit 150 determines that the local reactive power reserve power Qreq exists within the reactive power supply available range (S510; YES), the controller 170 determines the local reactive power reserve power Qreq in the reactive power. The supply amount is set (S520).
- the controller 170 sets the maximum value of the reactive power supply range to the reactive power supply amount (S530).
- the controller 170 updates the set reactive power supply available amount to the reactive power control reference value Qref (S540).
- the controller 170 transmits the updated reactive power control reference value Qref to the transmitter 190.
- the transmitter 190 transmits the reactive power control reference value Qref received from the controller 170 to the DMS 300 (or QMS 320) (S550).
- the DMS 300 (or the QMS 320) cooperatively controls reactive power sources in the distribution system and transmits reactive power corresponding to the reactive power control reference value Qref received from the transmitter 190 to the transmission system. Supply.
- the cooperative control apparatus 100 requests a recalculation request signal for the local representative voltage reference value Vref to the EMS 200 (S600), that is, the controller 170 updates the updated reactive power control reference value Qref. ),
- the controller 170 transmits the generated recalculation request signal to the transmitter 190.
- the transmitter 190 transmits the recalculation request signal received from the controller 170 to the EMS 200.
- the EMS 200 receiving the recalculation request signal recalculates an optimization function for determining the local representative voltage reference value Vref to update the local representative voltage reference value Vref.
- the cooperative control apparatus and method of the EMS and DMS provide the reserve power insufficient in the reactive power sources of the distribution system based on the reactive power reserve power detected by the power transmission system and the reactive power reserve power calculated by the EMS.
- the system voltage quality can be efficiently maintained, and the effective system voltage quality can be maintained even when the reactive power source is increased.
- the advertisement service providing method including the cooperative control apparatus and method of EMS and DMS according to the present invention may be implemented in the form of program instructions that can be executed by various computer means and recorded in a computer readable medium.
- the media may include, alone or in combination with the program instructions, data files, data structures, etc.
- the program instructions recorded on the media may be those specially designed and constructed for the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts.
- Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, floppy disks, and the like. Such as magneto-optical media, ROM, RAM, flash memory, etc.
- All types of hardware devices are specifically configured to store and execute the same program instructions.
- Examples of program instructions include not only machine code, such as that produced by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. It may include.
- Such hardware devices may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.
- the teachings of the present principles can be implemented as a combination of hardware and software.
- the software may be implemented as an application program that is actually implemented on the program storage unit.
- the application can be uploaded to and executed by a machine that includes any suitable architecture.
- the machine may be implemented on a computer platform having hardware such as one or more central processing units (CPU), computer processor, random access memory (RAM), and input / output (I / O) interfaces.
- the computer platform may include an operating system and micro instruction code.
- the various processes and functions described herein may be part of micro instruction code or part of an application program, or any combination thereof, and they may be executed by various processing apparatus including a CPU.
- various other peripheral devices such as additional data storage and printers may be connected to the computer platform.
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Claims (11)
- EMS로부터 EMS 정보를 입력받고, DMS로부터 DMS 정보를 입력받는 입력부;상기 입력된 EMS 정보에 포함된 대상계통정보 및 조류계산 데이터를 근거로 AQI 지수를 연산하는 연산부;상기 연산한 AQI 지수 및 상기 입력된 EMS 정보에 포함된 지역내 무효전력 예비력 필요량(Qreq)을 근거로 상기 DMS의 무효전력 협조제어 전환 여부를 판단하고, 상기 EMS 정보에 포함된 지역내 무효전력 예비력 필요량(Qreq) 및 상기 DMS 정보에 포함된 무효전력공급 가능범위를 근거로 무효전력 공급 가능량을 판단하는 판단부; 및상기 DMS의 무효전력 협조제어 전환으로 판단하면 협조제어 모드 전환 제어신호를 전송하여 상기 DMS를 무효전력 협조제어 모드로 전환시키고, 상기 판단한 무효전력 공급 가능량에 해당하는 무효전력을 상위계층으로 공급하도록 상기 DMS를 제어하는 제어부를 포함하는 것을 특징으로 하는 EMS 및 DMS의 협조제어 장치.
- 청구항 1에 있어서,상기 입력부는,상기 EMS로부터 대상계통정보, 지역 대표전압 기준값(Vref), 조류계산 데이터, 지역내 무효전력 예비력 필요량(Qreq)을 포함하는 EMS 정보를 입력받고,DMS로부터 무효전력 제어 기준값(Qref), 무효전력공급 가능범위를 포함하는 DMS 정보를 입력받는 것을 특징으로 하는 EMS 및 DMS의 협조제어 장치.
- 청구항 1에 있어서,상기 연산부는,상기 EMS 정보에 포함된 대상계통정보를 근거로 대상 지역계통을 하나의 등가모선으로 축약하고, 상기 등가모선에 가상 발전기를 연결하여 무효전력출력을 설정 범위에서 변경하면서 각각의 케이스에서 조류계산을 수행하는 것을 특징으로 하는 EMS 및 DMS의 협조제어 장치.
- 청구항 3에 있어서,상기 연산부는,상기 조류계산 결과중 축약된 대상모선의 전압값(Va)과 가상 발전기의 무효전력량(Qc)을 이용하여 생성한 XY 그래프 중에서 곡선의 꼭지점을 검출하고, 상기 검출한 꼭지점의 y좌표 크기를 AQI 지수로 연산하는 것을 특징으로 하는 EMS 및 DMS의 협조제어 장치.
- 청구항 1에 있어서,상기 판단부는,상기 연산한 AQI 지수가 무효전력 제어 기준값(Qref) 미만이면 무효전력 협조제어 전환으로 판단하는 것을 특징으로 하는 EMS 및 DMS의 협조제어 장치.
- 청구항 1에 있어서,상기 판단부는상기 지역내 무효전력 예비력 필요량(Qreq)이 무효전력공급 가능범위 내에 존재하면 상기 지역내 무효전력 예비력 필요량(Qreq)을 무효전력 공급 가능량으로 판단하고,상기 지역내 무효전력 예비력 필요량(Qreq)이 무효전력공급 가능범위를 초과하면 상기 무효전력공급 가능범위의 최대값을 무효전력 공급 가능량으로 판단하는 것을 특징으로 하는 EMS 및 DMS의 협조제어 장치.
- 입력부에 의해, EMS 정보 및 DMS 정보를 입력받는 단계;연산부에 의해, 상기 입력된 EMS 정보에 포함된 대상계통정보 및 조류계산 데이터를 근거로 AQI 지수를 연산하는 단계;판단부에 의해, 상기 연산한 AQI 지수 및 상기 입력된 EMS 정보에 포함된 지역내 무효전력 예비력 필요량(Qreq)을 근거로 DMS의 무효전력 협조제어 전환 여부를 판단하는 단계;제어부에 의해, 상기 판단하는 단계에서 DMS의 무효전력 협조제어 전환으로 판단하면 협조제어 모드 전환 제어신호를 전송하여 상기 DMS를 무효전력 협조제어 모드로 전환시키는 단계;상기 판단부에 의해, 상기 입력된 EMS 정보의 지역내 무효전력 예비력 필요량(Qreq)과 상기 입력된 DMS 정보의 무효전력공급 가능범위를 근거로 무효전력 공급 가능량을 판단하는 단계; 및상기 제어부에 의해, 상기 판단한 무효전력 공급 가능량에 해당하는 무효전력을 상위계층으로 공급하도록 상기 DMS를 제어하는 단계를 포함하는 것을 특징으로 하는 EMS 및 DMS의 협조제어 방법.
- 청구항 7에 있어서,상기 입력받는 단계는,상기 입력부에 의해, 상기 EMS로부터 대상계통정보, 지역 대표전압 기준값(Vref), 조류계산 데이터, 지역내 무효전력 예비력 필요량(Qreq)을 포함하는 EMS 정보를 입력받는 단계; 및상기 입력부에 의해, DMS로부터 무효전력 제어 기준값(Qref), 무효전력공급 가능범위를 포함하는 DMS 정보를 입력받는 단계를 더 포함하는 것을 특징으로 하는 EMS 및 DMS의 협조제어 방법.
- 청구항 7에 있어서,상기 AQI 지수를 연산하는 단계는,상기 연산부에 의해, 상기 EMS 정보에 포함된 대상계통정보를 근거로 대상 지역계통을 하나의 등가모선으로 축약하는 단계;상기 연산부에 의해, 상기 등가모선에 가상 발전기를 연결하여 무효전력출력을 설정 범위에서 변경하면서 각각의 케이스에서 조류계산을 수행하는 단계;상기 연산부에 의해, 상기 조류계산 결과중 축약된 대상모선의 전압값(Va)과 가상 발전기의 무효전력량(Qc)을 이용하여 생성한 XY 그래프를 생성하는 단계;상기 연산부에 의해, 상기 생성한 XY 그래프 중에서 곡선의 꼭지점을 검출하는 단계; 및상기 연산부에 의해, 상기 검출한 꼭지점의 y좌표 크기를 AQI 지수로 연산하는 단계를 포함하는 것을 특징으로 하는 EMS 및 DMS의 협조제어 방법.
- 청구항 7에 있어서,상기 무효전력 협조제어 전환 여부를 판단하는 단계에서는,상기 판단부에 의해, 상기 연산한 AQI 지수가 무효전력 제어 기준값(Qref) 미만이면 무효전력 협조제어 전환으로 판단하는 것을 특징으로 하는 EMS 및 DMS의 협조제어 방법.
- 청구항 7에 있어서,상기 무효전력 공급 가능량을 판단하는 단계에서는,상기 판단부에 의해, 상기 지역내 무효전력 예비력 필요량(Qreq)이 무효전력공급 가능범위 내에 존재하면 상기 지역내 무효전력 예비력 필요량(Qreq)을 무효전력 공급 가능량으로 판단하고,상기 지역내 무효전력 예비력 필요량(Qreq)이 무효전력공급 가능범위를 초과하면 상기 무효전력공급 가능범위의 최대값을 무효전력 공급 가능량으로 판단하는 것을 특징으로 하는 EMS 및 DMS의 협조제어 방법.
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CN104167740A (zh) * | 2014-08-12 | 2014-11-26 | 广东电网公司电力调度控制中心 | 500kV变电站35kV电容电抗省地协同自动控制系统及方法 |
CN104466972A (zh) * | 2014-12-15 | 2015-03-25 | 国家电网公司 | 一种站配协调的电压无功分布式控制方法 |
CN104538969A (zh) * | 2014-12-15 | 2015-04-22 | 重庆大学 | 一种根据考核评估结果进行站配协调的电压无功调节方法 |
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JP6587522B2 (ja) * | 2015-11-20 | 2019-10-09 | 株式会社日立製作所 | 電圧・無効電力制御装置、方法、および電圧・無効電力制御システム |
CN105356478A (zh) * | 2015-12-11 | 2016-02-24 | 谭焕玲 | 一种具有无功补偿功能的供电系统 |
CN110768247B (zh) * | 2019-10-28 | 2022-12-06 | 国网福建省电力有限公司 | 一种基于配电自动化主站的主配网模型拼接方法 |
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