WO2012043917A1 - Apparatus and method for controlling distributed power - Google Patents

Apparatus and method for controlling distributed power Download PDF

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Publication number
WO2012043917A1
WO2012043917A1 PCT/KR2010/007353 KR2010007353W WO2012043917A1 WO 2012043917 A1 WO2012043917 A1 WO 2012043917A1 KR 2010007353 W KR2010007353 W KR 2010007353W WO 2012043917 A1 WO2012043917 A1 WO 2012043917A1
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Prior art keywords
voltage
distributed power
power supply
specific bus
value
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PCT/KR2010/007353
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French (fr)
Korean (ko)
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권성철
송일근
윤상윤
추철민
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한국전력공사
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Publication of WO2012043917A1 publication Critical patent/WO2012043917A1/en

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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
    • H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
    • 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
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H02J3/1885—Arrangements for adjusting, eliminating or compensating reactive power in networks using rotating means, e.g. synchronous generators
    • 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 a distributed power supply control apparatus and method.
  • the present invention relates to a distributed power supply control apparatus and method that can flexibly cope with changes in conditions of a distribution system.
  • Distributed power is designed to reduce energy loss and transmission and distribution facilities by installing small power generation facilities near energy consumers or inside buildings.
  • Such distributed power sources may include photovoltaic power generation, fuel cell power generation, and wind power generation.
  • photovoltaic power generation may include photovoltaic power generation, fuel cell power generation, and wind power generation.
  • communication technology it is now possible to implement distributed power on an economic scale through remote automatic operation.
  • the distribution system may change voltage according to the amount of generation of the distributed power supply.
  • the voltage of the distribution line may be out of the range of the specified operating voltage of the distribution line. And, there is a risk that the electrical equipment of each generation that is supplied with electricity from the distribution line can be damaged.
  • an object of the present invention is to maintain the voltage of a distribution line within a specified voltage allowable range by appropriately controlling the output of the distributed power supply when a plurality of distributed power supplies are connected to the distribution system.
  • an object of the present invention is to maintain the voltage of the distribution line within the specified voltage allowable range without stopping some of the distributed power supplies connected to the distribution system. That is, an object of the present invention is to ensure a stable voltage of the distribution line, and to continuously output a plurality of distributed power sources connected to one distribution system, thereby improving the efficiency of the overall distributed power supply.
  • the present invention aims to increase the efficiency of the overall power system by controlling the distributed power supply in consideration of the state of the entire distribution line, rather than controlling the distributed power supply in consideration of the distribution line conditions at some contacts.
  • a distributed power supply control device including: a storage unit configured to store information about a specified voltage and a specified voltage allowable range of a specific bus including a distributed power supply; Sensing unit for sensing the voltage of the specific bus, the connection point to the distribution system of the distributed power supply and the voltage and current of the distribution line; When the voltage of the specific bus is out of the specified voltage allowable range, the voltage of the specific bus is maintained within the specified voltage allowable range based on data of the voltage and current sensed by the sensing unit.
  • a tidal current calculation unit for calculating the output limit value of the distributed power supply;
  • a distributed power supply control unit controlling the distributed power supply so that the output value of the distributed power supply is smaller than the output limit value calculated by the tidal current calculator.
  • the output limit value may be calculated based on the generated power value of the power source.
  • the distributed power control unit may control the power factor of the distributed power supply to one.
  • the specified voltage allowable range may be 0.95 times to 1.05 times the specified voltage.
  • the tidal current calculator may calculate the output limit value so that the voltage of the specific bus is maintained in the range of 0.96 times to 1.04 times the specified voltage.
  • the distributed power supply is a photovoltaic power generation power
  • the distributed power supply control unit is configured such that when the voltage of the specific bus is within the allowable voltage range, the voltage of the specific bus has a maximum value of the allowable voltage range. Can be controlled.
  • the step of calculating the current, the voltage value of the lead portion of the wiring line and the voltage value of the specific bus, the impedance value of the line between the lead portion of the distribution line and the specific bus, the power consumption value of the specific bus The output limit value may be calculated based on the generated power value of the distributed power supply.
  • the power factor of the distributed power supply may be controlled to one.
  • the specified voltage allowable range may be 0.95 times to 1.05 times the specified voltage.
  • the output limit value may be calculated such that the voltage of the specific bus is maintained in the range of 0.96 times to 1.04 times the specified voltage.
  • the distributed power source is a solar power generation power
  • the step of controlling the distributed power source when the voltage of the specific bus is within the allowable voltage range, the voltage of the specific bus is the maximum value of the specified voltage allowable range
  • the distributed power supply can be controlled to have.
  • the output of the distributed power supplies can be properly controlled to maintain the voltage of the distribution line within the specified voltage allowable range. Therefore, the risk of breakage of each generation of electric equipment supplied with electricity from the distribution line is reduced.
  • the present invention can maintain the voltage of the distribution line within the specified voltage allowable range without stopping some of the distributed power supplies connected to the distribution system. Therefore, while ensuring a stable voltage of the distribution line, a plurality of distributed power sources connected to one distribution system can be continuously output, the overall efficiency of the distributed power supply is improved.
  • the present invention may not control the distributed power supply in consideration of the distribution line conditions at some of the contacts, but control the distributed power supply in consideration of the state of the entire distribution line, thereby increasing the efficiency of the overall power system.
  • FIG. 1 is a diagram illustrating a wiring system to which a distributed power supply control device according to the present invention is applied.
  • FIG. 2 is a view for explaining a method for deriving the output limit value of the distributed power supply control apparatus according to the present invention.
  • FIG. 3 is a flowchart illustrating a distributed power supply control method according to the present invention.
  • 1 is a diagram illustrating a wiring system to which a distributed power supply control device according to the present invention is applied.
  • 2 is a view for explaining a method for deriving the output limit value of the distributed power supply control apparatus according to the present invention.
  • the distributed power supply control apparatus 100 includes a storage unit 110, a sensing unit 120, a tidal current calculation unit 130, and a distributed power supply control unit 140.
  • the distributed power supply control device 100 is formed to control a plurality of distributed power when a plurality of distributed power is connected to one distribution system.
  • the substation 11, the breaker 12, the first switch 13, the second switch 14, the third switch 15, the fourth switch 16, and the fifth switch 17 are included.
  • FIG. 2 shows the power distribution system 10 of FIG.
  • FIG. 1 A first bus bus1 including a specific first load 31, a second distributed power supply 22, a second bus bus2 including a specific second load 32, a third distributed power supply 23 and It is a figure defined and reconfigured by the 3rd bus bus3 including the specific 3rd load 33, the 4th distributed power supply 24, and the 4th busbus 4 including the 4th specific load 34.
  • the storage unit 110 has a predetermined voltage and a predetermined voltage allowable range of each of the first to fourth buses bus1, bus2, bus3, and bus4 including the first to fourth distributed power sources 21, 22, 23, and 24, respectively. It stores information about it. At this time, the specified voltage allowable range may be 0.95 times to 1.05 times the specified voltage.
  • the sensing unit 120 includes the voltage V 0 of the bus line input bus side of the distribution line and the voltages V 1 , V 2 , V 3 , and V 4 of the first to fourth busses bus 1, bus 2, bus 3, and bus 4 . Sensing. In addition, the sensing unit 120 senses voltages and currents of connection points and distribution lines of the distribution systems of the first to fourth distributed power sources 21, 22, 23, and 24. In addition, the sensing unit 120 uses the information of the sensed voltage and current and the information of the line type and the positive input on the system, that is, each section of the wiring system, that is, the first to fourth lines 41, 42, 43, and 44.
  • V 1, V 2 of (bus1, bus2, bus3, bus4 ) , V 3 , V 4 ) can be derived.
  • the tidal current calculation unit 130 allows at least one of the voltages V 1 , V 2 , V 3 , and V 4 of the first to fourth buses bus 1, bus 2, bus 3, and bus 4 to allow a prescribed voltage of the storage 110. If it is out of the range, the output limit values of the first to fourth distributed power supplies 21, 22, 23, and 24 are calculated.
  • the output limit value is the voltage (V 1 , V 2 , V 3 , V 4 ) of the first to fourth buses bus 1, bus 2, bus 3, and bus 4 based on data of the voltage and current sensed by the sensing unit 120. ?
  • the tidal current calculation unit 130 is a voltage (V 0 ), the voltage (V 1 , V 2 , V 3 , V 4 ) of the first to fourth bus (bus1, bus2, bus3, bus4), Impedances (R 1 + jX 1 , R 2 + jX 2 , R 3 + jX 3 , R 4 + jX 4 ) of the 1 to 4 lines 41, 42, 43, 44, and the first to fourth loads 31, 32.
  • the output limit value is calculated based on the generated powers P g1 + jQ g1 , P g2 + jQ g2 , P g3 + jQ g3 , P g4 + jQ g4 of the first to fourth distributed sources.
  • the specific method of deriving the output limit value is as follows.
  • the voltage V 1 of the first bus line bus1 is converted into the voltage V 0 of the lead-in bus line bus0 of the distribution line, the impedance R 1 + jX 1 of the first line 41, and the first bus line (
  • the power consumption P L1 + jQ L1 of bus1 and the generated power P g1 + jQ g1 of the first bus bus1 are expressed by Equation 1 below.
  • the active power P g1 generated by the first distributed power supply 21 is represented by the equation for the rated output P r of the first distributed power supply 21.
  • Equation 5 if the voltage of the distribution line inlet bus (bus0) and the first bus (bus1) is represented by pu (per unit) and the voltage (V 0 ) of the inlet bus (bus0) is 1, It is summarized as in Equation 5.
  • Equation 6 when the voltage V 4 at the end of the distribution line, that is, the fourth bus bus4, is expressed as Equation 6 below.
  • the voltage of V 4 in Equation 6 can be calculated by considering that the allowable voltage range is 0.95 times to 1.05 times the specified voltage, taking 1% as a margin and defining V 4-1 ⁇ 0.04. have. If the power factor of the first to fourth distributed power sources 21, 22, 23, and 24 is controlled to 1, the reactive power is set to 0, and the optimal ⁇ value can be calculated by arranging the equation as shown in Equation 7 below. have.
  • the output limit value is a value obtained by multiplying the rated output of the first to fourth distributed power supplies 21, 22, 23, 24 by the ⁇ value obtained by the above equation.
  • the distributed power supply control unit 140 controls the first to fourth distributed power supplies 21, 22, 23, 24 so that an output value of the first to fourth distributed power sources 21, 22, 23, and 24 is smaller than the output limit value calculated by the tidal current calculator 130. 22, 23, 24). In addition, the distributed power control unit 140 may control the power factor of the first to fourth distributed power sources 21, 22, 23, and 24 to one.
  • FIG. 3 is a flowchart illustrating a distributed power supply control method according to the present invention.
  • step S330 if it is determined in step S330 that the voltage of the specific bus is within the specified voltage allowable range, the distribution line is maintained without any calculation of the output limit value.
  • step S330 when it is determined in step S330 that the voltage of the specific bus is out of the allowable voltage allowance range, the voltage of the specific bus is defined based on the data of the voltage and current sensed through step S320. A tidal current output is calculated to keep the voltage within the allowable range (S340).
  • the tidal current calculation is based on the voltage value of the inlet part of the wiring line and the voltage value of the specific busbar, the impedance value of the line between the inlet part of the distribution line and the specific busbar, the power consumption value of the specific busbar, and the generated power value of the distributed power supply. It can be calculated as At this time, the output limit value can be calculated so that the voltage of the specific bus is maintained in the range of 0.96 times to 1.04 times the specified voltage.
  • the output value of the distributed power supply is adjusted based on the output limit value calculated in step S330 (S350). That is, the distributed power supply is controlled so that the output value of the distributed power supply becomes less than or equal to the output limit value. At this time, the distributed power source can be controlled so that the power factor is one.
  • step S360 it is determined whether power is continuously supplied from the distributed power supply, and it is determined whether to continue the distributed power supply control method according to the present invention (S360). If it is determined through step S360 that there is no power supply from the distributed power supply, the distributed power supply control method ends. On the other hand, if it is determined that power is continuously supplied from the distributed power supply through step S360, the process returns to step S320 to continuously monitor the distribution line and the distributed power supply.
  • the apparatus and method for controlling distributed power according to the present invention is not limited to the configuration and method of the embodiments described as described above, but the embodiments may be modified in various ways so that various modifications can be made. All or part may be optionally combined.

Abstract

Disclosed is a technique for controlling distributed power which can be flexible in responding to a change of conditions in a distribution system. The apparatus for controlling the distributed power according to the present invention includes: a sensing unit which senses a voltage of a particular main line, a connection point for the distribution system of the distributed power, and a distribution line voltage and current; a power flow calculation unit calculates an output limit value of the distributed power for the particular main line to maintain the voltage of the particular main line within a tolerance of a rated voltage on the basis of the data of the voltage and current sensed through the sensing unit when the voltage of the particular main line exceeds the tolerance of the rated voltage; and a distributed power control unit which controls the distributed power to reduce an output value of the distributed power in comparison with the output limit value calculated through the power flow calculation unit.

Description

분산전원 제어 장치 및 방법Distributed power control device and method
본 발명은 분산전원 제어 장치 및 방법에 관한 것이다. 특히, 본 발명은 배전계통의 조건 변화에 유연하게 대처할 수 있는 분산전원 제어 장치 및 방법에 관한 것이다.The present invention relates to a distributed power supply control apparatus and method. In particular, the present invention relates to a distributed power supply control apparatus and method that can flexibly cope with changes in conditions of a distribution system.
분산전원은 에너지 실수요자 근처 혹은 건물 내부에 소형 발전 설비를 설치해 에너지 손실과 송·배전 설비를 줄이기 위한 것이다. 이러한, 분산전원으로는 태양광 발전, 연료 전지 발전 및 풍력 발전 등이 이에 해당할 수 있다. 또한, 현재는 통신 기술의 발전에 따라 원격 자동운전 등을 통해 경제성 있는 규모로도 분산전원의 구현이 가능해졌다.Distributed power is designed to reduce energy loss and transmission and distribution facilities by installing small power generation facilities near energy consumers or inside buildings. Such distributed power sources may include photovoltaic power generation, fuel cell power generation, and wind power generation. In addition, with the development of communication technology, it is now possible to implement distributed power on an economic scale through remote automatic operation.
이러한, 분산전원이 배전계통에 다수개가 설치되어 분산전원 출력을 배전계통으로 송출하게 되면, 배전계통은 분산전원의 발전량에 따라 전압 등이 변동하게 된다. 특히, 다수의 대용량 분산전원이 하나의 배전선로에 연계되어 운전하게 되면, 배전선로의 전압이 배전선로의 규정운전전압의 범위를 벗어날 수 있다. 그리고, 이에 의하여 배전선로에서 전기를 공급받는 각 세대의 전기기기들이 파손될 수 있는 위험이 있다.When a plurality of distributed power supplies are installed in the distribution system and the distributed power output is sent to the distribution system, the distribution system may change voltage according to the amount of generation of the distributed power supply. In particular, when a plurality of large-capacity distributed power supplies are operated in connection with one distribution line, the voltage of the distribution line may be out of the range of the specified operating voltage of the distribution line. And, there is a risk that the electrical equipment of each generation that is supplied with electricity from the distribution line can be damaged.
상기한 과제를 해결하기 위하여 본 발명은, 분산전원이 배전계통에 다수개 연계되어 있을 때, 분산전원의 출력을 적절히 제어하여, 배전선로의 전압을 규정전압 허용범위 내로 유지하는 것을 목적으로 한다. In order to solve the above problems, an object of the present invention is to maintain the voltage of a distribution line within a specified voltage allowable range by appropriately controlling the output of the distributed power supply when a plurality of distributed power supplies are connected to the distribution system.
그리고, 본 발명은 배전계통에 연계된 일부 분산전원의 정지 없이, 배전선로의 전압을 규정전압 허용범위 내로 유지하는 것을 목적으로 한다. 즉, 본 발명은 배전선로의 안정적인 전압을 보장하면서, 하나의 배전계통에 연계된 다수개의 분산전원이 지속적으로 출력 가능하도록 하여, 전체적인 분산전원의 효율이 좋게하는 것을 목적으로 한다.In addition, an object of the present invention is to maintain the voltage of the distribution line within the specified voltage allowable range without stopping some of the distributed power supplies connected to the distribution system. That is, an object of the present invention is to ensure a stable voltage of the distribution line, and to continuously output a plurality of distributed power sources connected to one distribution system, thereby improving the efficiency of the overall distributed power supply.
또한, 본 발명은 일부 접점에서의 배전선로 상황을 고려하여 분산전원을 제어하는 것이 아니라, 배전선로 전체의 상태를 고려하여 분산전원을 제어하여, 전체적인 전력계통의 효율을 증가시키는 것을 목적으로 한다.In addition, the present invention aims to increase the efficiency of the overall power system by controlling the distributed power supply in consideration of the state of the entire distribution line, rather than controlling the distributed power supply in consideration of the distribution line conditions at some contacts.
상기한 목적을 달성하기 위한 본 발명에 따른 분산전원 제어 장치는 분산전원을 포함하는 특정 모선의 규정전압 및 규정전압 허용범위에 대한 정보를 저장하고 있는 저장부; 상기 특정 모선의 전압, 상기 분산전원의 배전계통에 대한 연계점 및 배전선로의 전압 및 전류를 센싱하는 센싱부; 상기 특정 모선의 전압이 상기 규정전압 허용범위를 벗어나는 경우, 상기 센싱부에서 센싱된 전압 및 전류의 데이터를 바탕으로 상기 특정 모선의 전압이 상기 규정전압 허용범위 내로 유지되도록 하는, 상기 특정 모선에 대한 상기 분산전원의 출력한계값을 계산하는 조류계산부; 상기 조류계산부에 의하여 계산된 상기 출력한계값보다 상기 분산전원의 출력값이 작아지도록 상기 분산전원을 제어하는 분산전원 제어부를 포함한다.In accordance with another aspect of the present invention, there is provided a distributed power supply control device including: a storage unit configured to store information about a specified voltage and a specified voltage allowable range of a specific bus including a distributed power supply; Sensing unit for sensing the voltage of the specific bus, the connection point to the distribution system of the distributed power supply and the voltage and current of the distribution line; When the voltage of the specific bus is out of the specified voltage allowable range, the voltage of the specific bus is maintained within the specified voltage allowable range based on data of the voltage and current sensed by the sensing unit. A tidal current calculation unit for calculating the output limit value of the distributed power supply; And a distributed power supply control unit controlling the distributed power supply so that the output value of the distributed power supply is smaller than the output limit value calculated by the tidal current calculator.
이 때, 상기 조류계산부는 상기 배선선로의 인입부의 전압값 및 상기 특정 모선의 전압값, 상기 배전선로의 인입부와 상기 특정 모선 사이의 선로의 임피던스값, 상기 특정 모선의 소모 전력값, 상기 분산전원의 발생 전력값을 바탕으로 상기 출력한계값을 계산할 수 있다. 그리고, 상기 분산전원 제어부는 상기 분산전원의 역률을 1로 제어할 수 있다. 또한, 상기 규정전압 허용범위는 상기 규정전압의 0.95 배 내지 1.05 배일 수 있다.At this time, the tidal current calculation unit voltage value of the lead portion of the wiring line and the voltage value of the specific bus, the impedance value of the line between the lead portion of the distribution line and the specific bus, the power consumption value of the specific bus, the dispersion The output limit value may be calculated based on the generated power value of the power source. The distributed power control unit may control the power factor of the distributed power supply to one. In addition, the specified voltage allowable range may be 0.95 times to 1.05 times the specified voltage.
이 때, 상기 조류계산부는 상기 특정 모선의 전압이 상기 규정전압의 0.96 배 내지 1.04 배의 범위에서 유지되도록 상기 출력한계값을 계산할 수 있다.At this time, the tidal current calculator may calculate the output limit value so that the voltage of the specific bus is maintained in the range of 0.96 times to 1.04 times the specified voltage.
이 때, 상기 분산전원은 태양광 발전 전원이고, 상기 분산전원 제어부는 상기 특정 모선의 전압이 상기 규전전압 허용범위 내인 경우, 상기 특정 모선의 전압이 상기 규정전압 허용범위의 최대치를 갖도록 상기 분산전원을 제어할 수 있다.In this case, the distributed power supply is a photovoltaic power generation power, and the distributed power supply control unit is configured such that when the voltage of the specific bus is within the allowable voltage range, the voltage of the specific bus has a maximum value of the allowable voltage range. Can be controlled.
또한, 상기한 목적을 달성하기 위한 본 발명에 따른 분산전원 제어 방법은 분산전원을 포함하는 특정 모선의 규정전압 및 규정전압 허용범위에 대한 정보를 저장하는 단계; 상기 특정 모선의 전압, 상기 분산전원의 배전계통에 대한 연계점 및 배선선로의 전압 및 전류를 센싱하는 단계; 상기 특정 모선의 전압이 상기 규정전압 허용범위 내에 속하는지를 판단하는 단계; 상기 특정 모선의 전압이 상기 규정전압 허용범위를 벗어나는 경우, 센싱된 상기 전압 및 전류의 데이터를 바탕으로 상기 특정 모선의 전압이 상기 규정전압 허용범위 내로 유지되도록 하는 출력한계값을 조류계산하는 단계; 및 상기 출력한계값보다 상기 분산전원의 출력값이 작아지도록 상기 분산전원을 제어하는 단계를 포함한다.In addition, the distributed power supply control method according to the present invention for achieving the above object comprises the steps of storing information about the specified voltage and the specified voltage allowable range of the specific bus line including the distributed power; Sensing the voltage of the specific bus, the connection point for the distribution system of the distributed power supply, and the voltage and current of the wiring line; Determining whether the voltage of the specific bus is within the specified voltage allowable range; Calculating an output limit value such that the voltage of the specific bus is maintained within the specified voltage allowable range based on the sensed data of the voltage and current when the voltage of the specific bus exceeds the allowable voltage range; And controlling the distributed power supply so that an output value of the distributed power supply is smaller than the output limit value.
이 때, 상기 조류계산하는 단계는, 상기 배선선로의 인입부의 전압값 및 상기 특정 모선의 전압값, 상기 배전선로의 인입부와 상기 특정 모선 사이의 선로의 임피던스값, 상기 특정 모선의 소모 전력값, 상기 분산전원의 발생 전력값을 바탕으로 상기 출력한계값을 계산할 수 있다. 그리고, 상기 분산전원의 역률은 1로 제어될 수 있다. 또한, 상기 규정전압 허용범위는 상기 규정전압의 0.95 배 내지 1.05 배일 수 있다.At this time, the step of calculating the current, the voltage value of the lead portion of the wiring line and the voltage value of the specific bus, the impedance value of the line between the lead portion of the distribution line and the specific bus, the power consumption value of the specific bus The output limit value may be calculated based on the generated power value of the distributed power supply. In addition, the power factor of the distributed power supply may be controlled to one. In addition, the specified voltage allowable range may be 0.95 times to 1.05 times the specified voltage.
이 때, 상기 출력한계값을 조류계산하는 단계는, 상기 특정 모선의 전압이 상기 규정전압의 0.96 배 내지 1.04 배의 범위에서 유지되도록 상기 출력한계값을 계산할 수 있다. In this case, in the tidal current calculation of the output limit value, the output limit value may be calculated such that the voltage of the specific bus is maintained in the range of 0.96 times to 1.04 times the specified voltage.
이 때, 상기 분산전원은 태양광 발전 전원이고, 상기 분산전원을 제어하는 단계는, 상기 특정 모선의 전압이 상기 규전전압 허용범위 내인 경우, 상기 특정 모선의 전압이 상기 규정전압 허용범위의 최대치를 갖도록 상기 분산전원을 제어할 수 있다.At this time, the distributed power source is a solar power generation power, and the step of controlling the distributed power source, when the voltage of the specific bus is within the allowable voltage range, the voltage of the specific bus is the maximum value of the specified voltage allowable range The distributed power supply can be controlled to have.
본 발명에 따르면, 분산전원이 배전계통에 다수개 연계되어 있을 때, 분산전원의 출력을 적절히 제어하여, 배전선로의 전압을 규정전압 허용범위 내로 유지할 수 있다. 따라서, 배전선로에서 전기를 공급받는 각 세대의 전기기기들의 파손 위험성이 줄어든다.According to the present invention, when a plurality of distributed power supplies are connected to the distribution system, the output of the distributed power supplies can be properly controlled to maintain the voltage of the distribution line within the specified voltage allowable range. Therefore, the risk of breakage of each generation of electric equipment supplied with electricity from the distribution line is reduced.
그리고, 본 발명은 배전계통에 연계된 일부 분산전원의 정지 없이, 배전선로의 전압을 규정전압 허용범위 내로 유지할 수 있다. 따라서, 배전선로의 안정적인 전압을 보장하면서, 하나의 배전계통에 연계된 다수개의 분산전원이 지속적으로 출력 가능하여, 전체적인 분산전원의 효율이 좋아진다.In addition, the present invention can maintain the voltage of the distribution line within the specified voltage allowable range without stopping some of the distributed power supplies connected to the distribution system. Therefore, while ensuring a stable voltage of the distribution line, a plurality of distributed power sources connected to one distribution system can be continuously output, the overall efficiency of the distributed power supply is improved.
또한, 본 발명은 일부 접점에서의 배전선로 상황을 고려하여 분산전원을 제어하는 것이 아니라, 배전선로 전체의 상태를 고려하여 분산전원을 제어하여, 전체적인 전력계통의 효율을 증가시킬 수 있다.In addition, the present invention may not control the distributed power supply in consideration of the distribution line conditions at some of the contacts, but control the distributed power supply in consideration of the state of the entire distribution line, thereby increasing the efficiency of the overall power system.
도 1은 본 발명에 따른 분산전원 제어 장치가 적용된 배선계통을 도시한 도면이다.1 is a diagram illustrating a wiring system to which a distributed power supply control device according to the present invention is applied.
도 2는 본 발명에 따른 분산전원 제어 장치의 출력한계값을 도출하는 방법에 대하여 설명하기 위한 도면이다.2 is a view for explaining a method for deriving the output limit value of the distributed power supply control apparatus according to the present invention.
도 3은 본 발명에 따른 분산전원 제어 방법을 설명하기 위한 동작 흐름도이다.3 is a flowchart illustrating a distributed power supply control method according to the present invention.
본 발명을 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다. 여기서, 반복되는 설명, 본 발명의 요지를 불필요하게 흐릴 수 있는 공지 기능, 및 구성에 대한 상세한 설명은 생략한다. 본 발명의 실시형태는 당 업계에서 평균적인 지식을 가진 자에게 본 발명을 보다 완전하게 설명하기 위해서 제공되는 것이다. 따라서, 도면에서의 요소들의 형상 및 크기 등은 보다 명확한 설명을 위해 과장될 수 있다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Here, the repeated description, well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention, and detailed description of the configuration will be omitted. Embodiments of the present invention are provided to more completely describe the present invention to those skilled in the art. Accordingly, the shape and size of elements in the drawings may be exaggerated for clarity.
이하에서는 본 발명에 따른 분산전원 제어 장치의 구성 및 동작에 대하여 설명하도록 한다. Hereinafter, the configuration and operation of the distributed power supply control apparatus according to the present invention will be described.
도 1은 본 발명에 따른 분산전원 제어 장치가 적용된 배선계통을 도시한 도면이다. 도 2는 본 발명에 따른 분산전원 제어 장치의 출력한계값을 도출하는 방법에 대하여 설명하기 위한 도면이다.1 is a diagram illustrating a wiring system to which a distributed power supply control device according to the present invention is applied. 2 is a view for explaining a method for deriving the output limit value of the distributed power supply control apparatus according to the present invention.
도 1 및 도 2를 참조하면, 본 발명에 따른 분산전원 제어 장치(100)는 저장부(110), 센싱부(120), 조류계산부(130) 및 분산전원 제어부(140)를 포함한다. 그리고, 이러한 분산전원 제어 장치(100)는 다수개의 분산전원이 하나의 배전계통에 연계되어 있을 때, 다수개의 분산전원을 제어할 수 있도록 형성된다. 이하에서는, 변전소(11), 차단기(12), 제 1 개폐기(13), 제 2 개폐기(14), 제 3 개폐기(15), 제 4 개폐기(16) 및 제 5 개폐기(17)를 포함하여 형성되는 배전계통(10)에 제 1 내지 제 4 분산전원(21, 22, 23, 24)이 연계된 구성에 대한, 본 발명에 따른 분산전원 제어 장치(100)의 동작 및 구성에 관하여 설명하도록 한다. 또한, 도 2는 도 1의 배전계통(10) 및 제 1 내지 제 4 분산전원(21, 22, 23, 24)을 배전선로 인입부 측의 모선(bus0), 제 1 분산 전원(21) 및 특정 제 1 부하(31)를 포함하는 제 1 모선(bus1), 제 2 분산 전원(22) 및 특정 제 2 부하(32)를 포함하는 제 2 모선(bus2), 제 3 분산 전원(23) 및 특정 제 3 부하(33)를 포함하는 제 3 모선(bus3), 제 4 분산 전원(24) 및 특정 제 4 부하(34)를 포함하는 제 4 모선(bus4)으로 정의하여 재구성한 도면이다.1 and 2, the distributed power supply control apparatus 100 according to the present invention includes a storage unit 110, a sensing unit 120, a tidal current calculation unit 130, and a distributed power supply control unit 140. In addition, the distributed power supply control device 100 is formed to control a plurality of distributed power when a plurality of distributed power is connected to one distribution system. Hereinafter, the substation 11, the breaker 12, the first switch 13, the second switch 14, the third switch 15, the fourth switch 16, and the fifth switch 17 are included. To describe the operation and configuration of the distributed power supply control device 100 according to the present invention for the configuration in which the first to fourth distributed power sources 21, 22, 23, and 24 are connected to the distribution system 10 formed. do. In addition, FIG. 2 shows the power distribution system 10 of FIG. 1 and the first to fourth distributed power supplies 21, 22, 23, and 24 to the bus line, the first distributed power supply 21, and the distribution line lead-in side. A first bus bus1 including a specific first load 31, a second distributed power supply 22, a second bus bus2 including a specific second load 32, a third distributed power supply 23 and It is a figure defined and reconfigured by the 3rd bus bus3 including the specific 3rd load 33, the 4th distributed power supply 24, and the 4th busbus 4 including the 4th specific load 34. FIG.
저장부(110)는 각각 제 1 내지 4 분산전원(21, 22, 23, 24)을 포함하는 제 1 내지 4 모선(bus1, bus2, bus3, bus4)의 각각의 규정전압 및 규정전압 허용범위에 대한 정보를 저장하고 있다. 이 때, 규정전압 허용범위는 규정전압의 0.95 배 내지 1.05 배일 수 있다. The storage unit 110 has a predetermined voltage and a predetermined voltage allowable range of each of the first to fourth buses bus1, bus2, bus3, and bus4 including the first to fourth distributed power sources 21, 22, 23, and 24, respectively. It stores information about it. At this time, the specified voltage allowable range may be 0.95 times to 1.05 times the specified voltage.
센싱부(120)는 배전선로 인입부측 모선(bus0)의 전압(V0) 및 제 1 내지 4 모선(bus1, bus2, bus3, bus4)의 전압(V1, V2, V3, V4)을 센싱한다. 그리고, 센싱부(120)는 제 1 내지 4 분산전원(21, 22, 23, 24)의 배전계통에 대한 연계점 및 배전선로의 전압 및 전류를 센싱한다. 또한, 센싱부(120)는 센싱된 전압 및 전류의 정보와 시스템상 기 입력되어 있는 선종과 긍장의 정보를 이용하여 배선계통 각 구간 즉, 제 1 내지 4 선로(41, 42, 43, 44)의 임피던스(R1+jX1, R2+jX2, R3+jX3, R4+jX4) 및 제 1 내지 4 모선(bus1, bus2, bus3, bus4)의 전압(V1, V2, V3, V4)을 도출할 수 있다.The sensing unit 120 includes the voltage V 0 of the bus line input bus side of the distribution line and the voltages V 1 , V 2 , V 3 , and V 4 of the first to fourth busses bus 1, bus 2, bus 3, and bus 4 . Sensing. In addition, the sensing unit 120 senses voltages and currents of connection points and distribution lines of the distribution systems of the first to fourth distributed power sources 21, 22, 23, and 24. In addition, the sensing unit 120 uses the information of the sensed voltage and current and the information of the line type and the positive input on the system, that is, each section of the wiring system, that is, the first to fourth lines 41, 42, 43, and 44. impedance (R 1 + jX 1, R 2 + jX 2, R 3 + jX 3, R 4 + jX 4) and the first to fourth line voltage (V 1, V 2 of (bus1, bus2, bus3, bus4 ) , V 3 , V 4 ) can be derived.
조류계산부(130)는 제 1 내지 4 모선(bus1, bus2, bus3, bus4)의 전압(V1, V2, V3, V4) 중 적어도 한 전압이 저장부(110)의 규정전압 허용 범위를 벗어나는 경우, 제 1 내지 4 분산전원(21, 22, 23, 24)의 출력한계값을 계산한다. 이러한, 출력한계값은 센싱부(120)에서 센싱된 전압 및 전류의 데이터를 바탕으로 제 1 내지 4 모선(bus1, bus2, bus3, bus4)의 전압(V1, V2, V3, V4)이 규정전압 허용범위내로 유지되도록 하는 제 1 내지 4 분산전원(21, 22, 23, 24)의 출력값이다. 또한, 조류계산부(130)는 배선선로 인입부의 전압(V0), 제 1 내지 4 모선(bus1, bus2, bus3, bus4)의 전압(V1, V2, V3, V4), 제 1 내지 4 선로(41, 42, 43, 44)의 임피던스(R1+jX1, R2+jX2, R3+jX3, R4+jX4), 제 1 내지 4 부하(31, 32, 33, 34)에 의한 제 1 내지 4 모선(bus1, bus2, bus3, bus4)의 소모 전력(PL1+jQL1, PL2+jQL2, PL3+jQL3, PL4+jQL4), 제 1 내지 4 분산전원의 발생 전력(Pg1+jQg1, Pg2+jQg2, Pg3+jQg3, Pg4+jQg4)을 바탕으로 출력한계값을 계산한다. 이러한, 출력한계값을 도출하는 구체적인 방법은 다음과 같다. 먼저, 제 1 모선(bus1)의 전압(V1)을 배전선로 인입부 모선(bus0)의 전압(V0), 제 1 선로(41)의 임피던스(R1+jX1), 제 1 모선(bus1)의 소모 전력(PL1+jQL1) 및 제 1 모선(bus1)의 발생 전력(Pg1+jQg1)으로 다음의 수학식 1과 같이 표현한다. The tidal current calculation unit 130 allows at least one of the voltages V 1 , V 2 , V 3 , and V 4 of the first to fourth buses bus 1, bus 2, bus 3, and bus 4 to allow a prescribed voltage of the storage 110. If it is out of the range, the output limit values of the first to fourth distributed power supplies 21, 22, 23, and 24 are calculated. The output limit value is the voltage (V 1 , V 2 , V 3 , V 4 ) of the first to fourth buses bus 1, bus 2, bus 3, and bus 4 based on data of the voltage and current sensed by the sensing unit 120. ? In addition, the tidal current calculation unit 130 is a voltage (V 0 ), the voltage (V 1 , V 2 , V 3 , V 4 ) of the first to fourth bus (bus1, bus2, bus3, bus4), Impedances (R 1 + jX 1 , R 2 + jX 2 , R 3 + jX 3 , R 4 + jX 4 ) of the 1 to 4 lines 41, 42, 43, 44, and the first to fourth loads 31, 32. Power consumption (P L1 + jQ L1 , P L2 + jQ L2 , P L3 + jQ L3 , P L4 + jQ L4 ) of the first to fourth bus lines bus1, bus2, bus3, and bus4 by The output limit value is calculated based on the generated powers P g1 + jQ g1 , P g2 + jQ g2 , P g3 + jQ g3 , P g4 + jQ g4 of the first to fourth distributed sources. The specific method of deriving the output limit value is as follows. First, the voltage V 1 of the first bus line bus1 is converted into the voltage V 0 of the lead-in bus line bus0 of the distribution line, the impedance R 1 + jX 1 of the first line 41, and the first bus line ( The power consumption P L1 + jQ L1 of bus1 and the generated power P g1 + jQ g1 of the first bus bus1 are expressed by Equation 1 below.
[수학식 1][Equation 1]
Figure PCTKR2010007353-appb-I000001
Figure PCTKR2010007353-appb-I000001
이는, 다음의 수학식 2의 수학식 3으로의 변환 정리를 통해 도출된다.This is derived through the conversion theorem into Equation 3 in Equation 2 below.
[수학식 2][Equation 2]
Figure PCTKR2010007353-appb-I000002
Figure PCTKR2010007353-appb-I000002
[수학식 3][Equation 3]
Figure PCTKR2010007353-appb-I000003
Figure PCTKR2010007353-appb-I000003
여기서, 제 1 분산전원(21)이 발생시키는 유효 전력(Pg1)을 제 1 분산전원(21)의 정격 출력(Pr)에 대한 식으로 나타내면 다음의 수학식 4와 같다. Here, the active power P g1 generated by the first distributed power supply 21 is represented by the equation for the rated output P r of the first distributed power supply 21.
[수학식 4][Equation 4]
Figure PCTKR2010007353-appb-I000004
Figure PCTKR2010007353-appb-I000004
(이 때, 0 < α <= 1)Where 0 <α <= 1
또한, 수학식 1에서 배전선로 인입부 모선(bus0) 및 제 1 모선(bus1)의 전압을 p.u.(per unit)으로 나타내고 인입부 모선(bus0)의 전압(V0)을 1로 두면, 다음의 수학식 5와 같이 정리된다.In addition, in Equation 1, if the voltage of the distribution line inlet bus (bus0) and the first bus (bus1) is represented by pu (per unit) and the voltage (V 0 ) of the inlet bus (bus0) is 1, It is summarized as in Equation 5.
[수학식 5][Equation 5]
Figure PCTKR2010007353-appb-I000005
Figure PCTKR2010007353-appb-I000005
상기의 수학식 5와 같이, 배전선로 말단 즉, 제 4 모선(bus4)에서의 전압(V4)을 표현하면 다음의 수학식 6과 같다.As shown in Equation 5 above, when the voltage V 4 at the end of the distribution line, that is, the fourth bus bus4, is expressed as Equation 6 below.
[수학식 6][Equation 6]
Figure PCTKR2010007353-appb-I000006
Figure PCTKR2010007353-appb-I000006
이 때, 수학식 6에서 V4의 전압은 규정전압 허용범위가 규정전압의 0.95 배 내지 1.05 배인 것을 고려하고, 여유율로서 1 %를 잡아, V4 - 1 < 0.04로 정의하여 α값을 계산할 수 있다. 그리고, 제 1 내지 4 분산전원(21, 22, 23, 24)의 역률을 1로 제어한다면, 무효전력을 0으로 두고, 다음의 수학식 7과 같이 식을 정리하여 최적의 α값을 계산할 수 있다.In this case, the voltage of V 4 in Equation 6 can be calculated by considering that the allowable voltage range is 0.95 times to 1.05 times the specified voltage, taking 1% as a margin and defining V 4-1 <0.04. have. If the power factor of the first to fourth distributed power sources 21, 22, 23, and 24 is controlled to 1, the reactive power is set to 0, and the optimal α value can be calculated by arranging the equation as shown in Equation 7 below. have.
[수학식 7][Equation 7]
Figure PCTKR2010007353-appb-I000007
Figure PCTKR2010007353-appb-I000007
출력한계값은 제 1 내지 제 4 분산전원(21, 22, 23, 24)의 정격출력에, 상기의 식을 통해 구한 α값을 곱한 값이 된다. The output limit value is a value obtained by multiplying the rated output of the first to fourth distributed power supplies 21, 22, 23, 24 by the α value obtained by the above equation.
분산전원 제어부(140)는 조류계산부(130)에 의하여 계산된 출력한계값보다 제 1 내지 4 분산전원(21, 22, 23, 24)의 출력값이 작아지도록 제 1 내지 4 분산전원(21, 22, 23, 24)을 제어한다. 또한, 분산전원 제어부(140)는 제 1 내지 4 분산전원(21, 22, 23, 24)의 역률을 1로 제어할 수 있다. The distributed power supply control unit 140 controls the first to fourth distributed power supplies 21, 22, 23, 24 so that an output value of the first to fourth distributed power sources 21, 22, 23, and 24 is smaller than the output limit value calculated by the tidal current calculator 130. 22, 23, 24). In addition, the distributed power control unit 140 may control the power factor of the first to fourth distributed power sources 21, 22, 23, and 24 to one.
이하에서는 본 발명에 따른 분산전원 제어 방법에 대하여 설명하도록 한다. Hereinafter, the distributed power supply control method according to the present invention will be described.
도 3은 본 발명에 따른 분산전원 제어 방법을 설명하기 위한 동작 흐름도이다.3 is a flowchart illustrating a distributed power supply control method according to the present invention.
도 3을 참조하면, 본 발명에 따른 분산전원 제어 방법은 먼저, 분산전원을 포함하는 특정 모선의 규정전압 및 규정전압 허용범위에 대한 정보를 기 저장한다. 이 때, 규정전압 허용범위는 규정전압의 0.95 배 내지 1.05 배 일 수 있다. 그리고, 하나의 배전계통에 있어서 배전소 및 분산전원이 전력 공급을 시작하게 된다(S310).Referring to FIG. 3, the distributed power supply control method according to the present invention first stores information about a specified voltage and a specified voltage allowable range of a specific bus including a distributed power supply. In this case, the allowable voltage range may be 0.95 times to 1.05 times the specified voltage. Then, in one distribution system, the distribution station and the distributed power supply start power supply (S310).
또한, 상기 특정 모선의 전압, 상기 분산전원의 배전계통에 대한 연계점 및 배전선로의 전압 및 전류를 센싱한다(S320).In addition, the voltage of the specific bus, the connection point for the distribution system of the distributed power supply and the voltage and current of the distribution line is sensed (S320).
또한, 상기 특정 모선의 전압이 규정전압 허용범위 내에 속하는지를 판단한다(S330). 즉, 특정 모선의 전압(Vi)이 정격전압(Vr)의 0.95 배 내지 1.05 배에 해당하는지를 판단한다.In addition, it is determined whether the voltage of the specific bus is within a specified voltage allowable range (S330). That is, it is determined whether the voltage (V i) of a particular bus bar is equivalent to 0.95 to 1.05 times the rated voltage (V r).
또한, 단계(S330)의 판단 결과, 특정 모선의 전압이 규정전압 허용범위 내에 속하는 것으로 판단하면, 특별히 출력한계값에 대한 계산 없이 배전선로를 그대로 유지한다. 반면, 단계(S330)의 판단 결과, 특정 모선의 전압이 규정전압 허용범위를 벗어나는 것으로 판단되는 경우, 단계(S320)를 통해 센싱된 전압 및 전류의 데이터를 바탕으로 상기 특정 모선의 전압이 상기 규정전압 허용범위 내로 유지되도록 하는 출력한계값을 조류계산한다(S340). 이 때, 조류계산은 배선선로의 인입부의 전압값 및 특정 모선의 전압값, 배전선로의 인입부와 특정 모선 사이의 선로의 임피던스값, 특정 모선의 소모 전력값, 분산전원의 발생 전력값을 바탕으로 계산될 수 있다. 이 때, 특정 모선의 전압이 상기 규정전압의 0.96 배 내지 1.04 배의 범위에서 유지되도록 출력한계값을 계산할 수 있다.In addition, if it is determined in step S330 that the voltage of the specific bus is within the specified voltage allowable range, the distribution line is maintained without any calculation of the output limit value. On the other hand, when it is determined in step S330 that the voltage of the specific bus is out of the allowable voltage allowance range, the voltage of the specific bus is defined based on the data of the voltage and current sensed through step S320. A tidal current output is calculated to keep the voltage within the allowable range (S340). At this time, the tidal current calculation is based on the voltage value of the inlet part of the wiring line and the voltage value of the specific busbar, the impedance value of the line between the inlet part of the distribution line and the specific busbar, the power consumption value of the specific busbar, and the generated power value of the distributed power supply. It can be calculated as At this time, the output limit value can be calculated so that the voltage of the specific bus is maintained in the range of 0.96 times to 1.04 times the specified voltage.
또한, 단계(S330)를 통해 계산된 출력한계값을 토대로 분산전원의 출력값을 조정한다(S350). 즉, 분산전원의 출력값을 출력한계값 이하가 되도록 분산전원을 제어한다. 이 때, 분산전원은 역률이 1이 되게 제어될 수 있다. In addition, the output value of the distributed power supply is adjusted based on the output limit value calculated in step S330 (S350). That is, the distributed power supply is controlled so that the output value of the distributed power supply becomes less than or equal to the output limit value. At this time, the distributed power source can be controlled so that the power factor is one.
또한, 분산전원에서 전력이 계속 공급되는지를 판단하여 본 발명에 따른 분산전원 제어 방법을 계속할지를 결정한다(S360). 단계(S360)를 통해 분산전원에서 전력의 공급이 없는 것으로 판단되는 경우, 분산 전원 제어 방법을 종료한다. 반면, 단계(S360)를 통해 분산전원에서 전력이 계속 공급되는 것으로 판단되는 경우, 단계(S320)로 돌아가, 배전선로 및 분산전원을 계속적으로 감시하게 된다. In addition, it is determined whether power is continuously supplied from the distributed power supply, and it is determined whether to continue the distributed power supply control method according to the present invention (S360). If it is determined through step S360 that there is no power supply from the distributed power supply, the distributed power supply control method ends. On the other hand, if it is determined that power is continuously supplied from the distributed power supply through step S360, the process returns to step S320 to continuously monitor the distribution line and the distributed power supply.
이상에서와 같이 본 발명에 따른 분산전원 제어 장치 및 방법은 상기한 바와 같이 설명된 실시예들의 구성과 방법이 한정되게 적용될 수 있는 것이 아니라, 상기 실시예들은 다양한 변형이 이루어질 수 있도록 각 실시예들의 전부 또는 일부가 선택적으로 조합되어 구성될 수도 있다.As described above, the apparatus and method for controlling distributed power according to the present invention is not limited to the configuration and method of the embodiments described as described above, but the embodiments may be modified in various ways so that various modifications can be made. All or part may be optionally combined.

Claims (12)

  1. 분산전원을 포함하는 특정 모선의 규정전압 및 규정전압 허용범위에 대한 정보를 저장하고 있는 저장부;A storage unit which stores information on a specified voltage and a specified voltage allowable range of a specific bus including a distributed power supply;
    상기 특정 모선의 전압, 상기 분산전원의 배전계통에 대한 연계점 및 배전선로의 전압 및 전류를 센싱하는 센싱부;Sensing unit for sensing the voltage of the specific bus, the connection point to the distribution system of the distributed power supply and the voltage and current of the distribution line;
    상기 특정 모선의 전압이 상기 규정전압 허용범위를 벗어나는 경우, 상기 센싱부에서 센싱된 전압 및 전류의 데이터를 바탕으로 상기 특정 모선의 전압이 상기 규정전압 허용범위 내로 유지되도록 하는, 상기 특정 모선에 대한 상기 분산전원의 출력한계값을 계산하는 조류계산부; 및When the voltage of the specific bus is out of the specified voltage allowable range, the voltage of the specific bus is maintained within the specified voltage allowable range based on data of voltage and current sensed by the sensing unit. A tidal current calculation unit for calculating the output limit value of the distributed power supply; And
    상기 조류계산부에 의하여 계산된 상기 출력한계값보다 상기 분산전원의 출력값이 작아지도록 상기 분산전원을 제어하는 분산전원 제어부를 포함하는 것을 특징으로 하는 분산전원 제어 장치.And a distributed power supply control unit for controlling the distributed power supply so that the output value of the distributed power supply is smaller than the output limit value calculated by the tidal current calculator.
  2. 청구항 1에 있어서,The method according to claim 1,
    상기 조류계산부는The bird calculation unit
    상기 배선선로의 인입부의 전압값 및 상기 특정 모선의 전압값, 상기 배전선로의 인입부와 상기 특정 모선 사이의 선로의 임피던스값, 상기 특정 모선의 소모 전력값, 상기 분산전원의 발생 전력값을 바탕으로 상기 출력한계값을 계산하는 것을 특징으로 하는 분산전원 제어 장치.Based on the voltage value of the lead portion of the wiring line and the voltage value of the specific bus line, the impedance value of the line between the lead portion of the distribution line and the specific bus line, the power consumption value of the specific bus line, the generated power value of the distributed power supply Distributed power supply control device characterized in that for calculating the output limit value.
  3. 청구항 2에 있어서,The method according to claim 2,
    상기 분산전원 제어부는 상기 분산전원의 역률을 1로 제어하는 것을 특징으로 하는 분산전원 제어 장치.The distributed power supply control unit is a distributed power supply control device, characterized in that for controlling the power factor of the distributed power supply.
  4. 청구항 1에 있어서,The method according to claim 1,
    상기 규정전압 허용범위는 상기 규정전압의 0.95 배 내지 1.05 배인 것을 특징으로 하는 분산전원 제어 장치.The regulated voltage allowable range is 0.95 times to 1.05 times the specified voltage distributed control device.
  5. 청구항 4에 있어서,The method according to claim 4,
    상기 조류계산부는 The bird calculation unit
    상기 특정 모선의 전압이 상기 규정전압의 0.96 배 내지 1.04 배의 범위에서 유지되도록 상기 출력한계값을 계산하는 것을 특징으로 하는 분산전원 제어 장치.And distributing the output limit value so that the voltage of the specific bus is maintained in the range of 0.96 times to 1.04 times the specified voltage.
  6. 청구항 1에 있어서,The method according to claim 1,
    상기 분산전원은 태양광 발전 전원이고,The distributed power source is a photovoltaic power source,
    상기 분산전원 제어부는 상기 특정 모선의 전압이 상기 규전전압 허용범위 내인 경우, 상기 특정 모선의 전압이 상기 규정전압 허용범위의 최대치를 갖도록 상기 분산전원을 제어하는 것을 특징으로 하는 분산전원 제어 장치.The distributed power supply controller is configured to control the distributed power so that the voltage of the specific bus has a maximum value within the allowable voltage range when the voltage of the specific bus is within the allowable voltage range.
  7. 분산전원을 포함하는 특정 모선의 규정전압 및 규정전압 허용범위에 대한 정보를 저장하는 단계;Storing information on a specified voltage and a specified voltage allowable range of a specific bus including a distributed power supply;
    상기 특정 모선의 전압, 상기 분산전원의 배전계통에 대한 연계점 및 배선선로의 전압 및 전류를 센싱하는 단계;Sensing the voltage of the specific bus, the connection point for the distribution system of the distributed power supply, and the voltage and current of the wiring line;
    상기 특정 모선의 전압이 상기 규정전압 허용범위 내에 속하는지를 판단하는 단계;Determining whether the voltage of the specific bus is within the specified voltage allowable range;
    상기 특정 모선의 전압이 상기 규정전압 허용범위를 벗어나는 경우, 센싱된 상기 전압 및 전류의 데이터를 바탕으로 상기 특정 모선의 전압이 상기 규정전압 허용범위 내로 유지되도록 하는 출력한계값을 조류계산하는 단계; 및Calculating an output limit value such that the voltage of the specific bus is maintained within the specified voltage allowable range based on the sensed data of the voltage and current when the voltage of the specific bus exceeds the allowable voltage range; And
    상기 출력한계값보다 상기 분산전원의 출력값이 작아지도록 상기 분산전원을 제어하는 단계를 포함하는 것을 특징으로 하는 분산전원 제어 방법.And controlling the distributed power supply so that an output value of the distributed power supply is smaller than the output limit value.
  8. 청구항 7에 있어서, The method according to claim 7,
    상기 조류계산하는 단계는,The algal calculation step,
    상기 배선선로의 인입부의 전압값 및 상기 특정 모선의 전압값, 상기 배전선로의 인입부와 상기 특정 모선 사이의 선로의 임피던스값, 상기 특정 모선의 소모 전력값, 상기 분산전원의 발생 전력값을 바탕으로 상기 출력한계값을 계산하는 것을 특징으로 하는 분산전원 제어 방법.Based on the voltage value of the lead portion of the wiring line and the voltage value of the specific bus line, the impedance value of the line between the lead portion of the distribution line and the specific bus line, the power consumption value of the specific bus line, the generated power value of the distributed power supply Distributed power control method characterized in that for calculating the output limit value.
  9. 청구항 8에 있어서, The method according to claim 8,
    상기 분산전원의 역률은 1로 제어되는 것을 특징으로 하는 분산전원 제어 방법.Distributed power supply control method characterized in that the power factor of the distributed power supply is controlled to one.
  10. 청구항 7에 있어서,The method according to claim 7,
    상기 규정전압 허용범위는 상기 규정전압의 0.95 배 내지 1.05 배인 것을 특징으로 하는 분산전원 제어 방법.The specified voltage allowable range is 0.95 times to 1.05 times of the specified voltage distributed control method.
  11. 청구항 10에 있어서,The method according to claim 10,
    상기 출력한계값을 조류계산하는 단계는,The algae calculation of the output limit value,
    상기 특정 모선의 전압이 상기 규정전압의 0.96 배 내지 1.04 배의 범위에서 유지되도록 상기 출력한계값을 계산하는 것을 특징으로 하는 분산전원 제어 방법.And calculating the output limit value so that the voltage of the specific bus is maintained in the range of 0.96 times to 1.04 times the specified voltage.
  12. 청구항 7에 있어서,The method according to claim 7,
    상기 분산전원은 태양광 발전 전원이고,The distributed power source is a photovoltaic power source,
    상기 분산전원을 제어하는 단계는,Controlling the distributed power source,
    상기 특정 모선의 전압이 상기 규전전압 허용범위 내인 경우, 상기 특정 모선의 전압이 상기 규정전압 허용범위의 최대치를 갖도록 상기 분산전원을 제어하는 것을 특징으로 하는 분산전원 제어 방법.And if the voltage of the specific bus is within the allowable voltage range, controlling the distributed power so that the voltage of the specific bus has a maximum value of the specified voltage allowable range.
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