WO2021172223A1 - Système de stabilisation de réseau électrique utilisant une ligne de communication - Google Patents

Système de stabilisation de réseau électrique utilisant une ligne de communication Download PDF

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Publication number
WO2021172223A1
WO2021172223A1 PCT/JP2021/006441 JP2021006441W WO2021172223A1 WO 2021172223 A1 WO2021172223 A1 WO 2021172223A1 JP 2021006441 W JP2021006441 W JP 2021006441W WO 2021172223 A1 WO2021172223 A1 WO 2021172223A1
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Prior art keywords
power
load
communication line
power consumption
generated
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PCT/JP2021/006441
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English (en)
Japanese (ja)
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嶋田　隆一
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嶋田　隆一
株式会社 エコ革
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Publication of WO2021172223A1 publication Critical patent/WO2021172223A1/fr

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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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • 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
    • H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
    • 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
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • 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
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/222—Demand response systems, e.g. load shedding, peak shaving

Definitions

  • the present invention compensates for the total amount of generated power of the distributed power source flowing into the power system and the fluctuation of the power so that the power fluctuation of the distributed power source such as renewable energy does not cause frequency disturbance in the power system.
  • the total power consumption of a controllable specific load (hereinafter simply referred to as "specific load") is constantly monitored via the communication line, and the power consumption of the specific load is set on the communication line so that they match.
  • the power system stabilization system that is centrally controlled through the system, it is characterized by controlling the power system so that serious voltage fluctuations and frequency fluctuations do not occur, especially when performing on / off control of a large number of specific loads.
  • the power system stabilization system using the communication line Regarding the power system stabilization system using the communication line.
  • the frequency of the power system must always be controlled to match the amount of electricity generated equal to the total power consumption, and if there is a difference, the time constant from a few seconds to a few tens of seconds will start from the target value of 50 or 60 hertz. It will change.
  • the time constant depends on the kinetic energy of the rotating machine that rotates with the generator connected to the power system.
  • high-speed adjustable hydroelectric power generation is in charge of power generation means that can control the amount of power generation required for frequency stabilization as a means that can be controlled with a time constant of several seconds to several tens of seconds.
  • nuclear power generation generates a certain amount of power, and thermal power generation is planned according to the forecast and plan of power consumption. From planned power generation, only hydroelectric power generation, which can respond at high speed, performs output control and frequency feedback control, but this amount was sufficient at about 10% of the total.
  • Frequency control is based on planned power plant operation, and hydroelectric power generation, pumped storage power generation, and thermal power plant output are used for frequency control so as to maintain the target frequency against changes in time and time. I'm changing. It is not so difficult for the conventional system stabilization controller to control the frequency within a stable accuracy range by the automatic control function. For example, it is operated within a fluctuation of 0.05 Hz of the target value.
  • Patent Document 1 a system stabilizer for suppressing power fluctuations generated in the power system due to output fluctuations of the wind power generator. This is installed on the wind power generator side, which makes it possible to output stable power to the power system, but it is necessary to install it for each wind power generator and the installation cost is high, so it is popular. Has difficulty.
  • variable-speed pumped-storage power generation which uses pumped-storage output for frequency adjustment during pumping operation, has been put into practical use for the first time in the world at pumped-storage power plants for nighttime power storage. This is also because nuclear power generation in Japan does not perform load-following operation, and as the ratio increases, the power adjustment capacity at night becomes insufficient. In the state where nuclear power generation is stopped these days, this variable speed pumped storage power generation should be operated in response to solar power generation. In this way, it seems that it is naturally required in the energy-saving society of the 21st century to obtain the adjustment ability on the load side from the general load existing in the electric power system.
  • electric water heaters which are widely used in millions of units, can be time-division-controlled so that the original function of the water heater (boiling water) is not lost by adjusting the output by about 30%.
  • Centralized control is possible by means of communication such as.
  • a conventional system stabilizer that controls the frequency of the power system so that the power fluctuation of the distributed power source such as renewable energy does not disturb the frequency of the power system. While coordinating, the total amount of power generated by the distributed generation that flows into the power system and the total amount of power consumption of a specific controllable load that compensates for the fluctuations are constantly monitored via the communication line so that they match.
  • An application has been filed and patented by the present inventor for a power system stabilization system that centrally controls the power consumption of a specific load via a communication line (see Patent Document 3 below).
  • the specific load refers to the load of a specific consumer who has a contract to allow the power consumption control of such a load. For example, a total of 8 million units nationwide (according to the 2017 report of the Central Electric Power Research Institute, the total number of electric water heaters was 8 million from 1995 to 2015, of which 3 million were electric heaters and 5 million were eco-cute.
  • the problem is how to adjust the on / off control of such a specific load to the load fluctuation of natural energy. For example, if a large number of specific loads are turned on or off at the same time, it is expected that sudden load fluctuations will cause voltage fluctuations in the local power system.
  • the present invention prevents serious voltage fluctuations and frequency fluctuations in the power system when on / off control of a plurality of specific loads is performed in the power system stabilization system using the communication line of Patent Document 3. It is an object of the present invention to provide a power system stabilization system using a communication line characterized by controlling the power system.
  • the present invention controls the power consumption of a plurality of specific loads (hereinafter referred to as "loads" in this paragraph) connected to a power system via a communication line to stabilize the frequency of the power system.
  • the system includes one or a plurality of distributed power sources that supply power generation power that fluctuates in a cycle of several seconds or more connected to the power system, and the power generation power of each of the distributed power sources. Is detected and the generated power information including the time information is transmitted to the communication line.
  • the generated power detection unit provided for each distributed power source and the power consumption of a plurality of loads connected to the power system are detected and the time information is obtained.
  • the power consumption information including the above is transmitted to the communication line, and the power consumption measurement control terminal connected for each load, which performs individual adjustment control of the load, and the power generation information from each power generation detection unit are described.
  • the communication is obtained between the power generation fluctuation measurement monitoring means that acquires the total amount of power generated by all the distributed power sources in time series and the power consumption information from each power consumption measurement control terminal.
  • the load power fluctuation measurement monitoring means that acquires the total amount of the power consumption in a time series and the generated power fluctuation measurement monitoring means that the power generation fluctuation measurement monitoring means could not acquire the next generated power information within a predetermined time.
  • a power fluctuation predicting means that makes a judgment based on the time information, and if the generated power information cannot be acquired, predicts and calculates the next generated power information based on the previously acquired generated power information, and the distributed power source.
  • the load adjustment control is performed via the communication line so that the total amount of the generated power (including the predicted and calculated generated power) in the time series and the total amount of the power consumption in the time series match. It is equipped with a load adjustment control means that commands the measurement control terminal to perform the operation.
  • Each power consumption measurement control terminal includes a remote switch for turning on / off the load.
  • the load adjustment control means calculates the time-series power consumption command value from the time-series total amount of the time-series power generation amount and the total amount of the time-series power consumption values of each load.
  • the load adjustment control means generates an on / off command signal for each remote switch by time-divided triangular wave comparison PWM control based on the power consumption command value, and the phase of the reference triangular wave in the triangular wave comparison PWM control.
  • the remote switch is controlled by the on / off command signal by sequentially delaying each load by the angle obtained by dividing 360 ° by the number of the loads.
  • the generated power detection unit, the power consumption measurement control terminal, the generated power fluctuation measurement and monitoring means, the load power fluctuation measurement and monitoring means, the power fluctuation prediction means, and the load adjustment control means are connected to each other so as to be communicable with each other via the communication line. It is characterized by that.
  • the power system stabilization system using the communication line when on / off control of a plurality of specific loads is performed, the power system is controlled so as not to cause serious voltage fluctuations and frequency fluctuations. Will be possible.
  • FIG. 1 is a system configuration diagram showing an embodiment of a power system stabilization system using a communication line according to the present invention.
  • the power system 10 includes general power generation equipment 11 for thermal power generation, hydroelectric power generation, nuclear power generation, etc., and is connected to general load equipment 12 for general households, factories, and the like.
  • a frequency stabilizer (not shown) is also connected.
  • a distributed power source 20 such as a solar power generation device or a wind power generator is connected to the power system 10, and the power generated by the distributed power source 20 is supplied to the power system 10.
  • a generated power detection unit 21 that detects the generated power is connected to the distributed power source 20.
  • a plurality of "specific loads 13" which are loads of specific consumers who have a contract to allow the power consumption to be controlled by the power measurement control device 30 described later, are connected to the power system 10.
  • a power consumption measurement control terminal 14 provided with a remote control switch (not shown) that detects power consumption and controls load on / off is connected to the specific load 13.
  • the power measurement control device 30 controls so that the total amount of power generated by the distributed power source 20 in time series and the total amount of power consumed by the specific load 13 in time series match.
  • the communication control means 31 of the power consumption measurement control terminal 14 and the power measurement control device 30 are connected to each other so as to be able to communicate with each other via a communication line 40 such as an Internet communication network.
  • the power measurement control device 30 acquires power generation information of the distributed power source 20 via the communication line 40, and communicates with the power generation power fluctuation measurement monitoring means 32 that measures the total amount of power generation in time series of the power generation.
  • the load power fluctuation measurement monitoring means 33 which acquires power consumption information via the line 40 and measures the total amount of power consumption in time series, and the total amount of generated power in time series and the total amount of power consumption in time series match.
  • the load adjustment control means 34 that controls the load adjustment by turning on / off the specific load 13 and the communication delay of the communication line 40 make it impossible to acquire the next power generation information within a predetermined time.
  • the power fluctuation prediction means 35 for predicting and calculating the next power generation information based on the power generation information acquired before that is provided.
  • the electric power generated by the distributed power source 20 is detected by the generated electric power detection unit 21 and is sent to the electric power measurement control device 30 via the communication line 40 in real time together with the time data.
  • the total amount of power generated by the series is measured.
  • the power consumption information of each load is sent in real time from the power consumption measurement control terminal 14 connected to the specific load 13 together with the time data, and the load power fluctuation measurement monitoring means 33 determines the total amount of power consumption in the time series. It is measured.
  • the load adjustment control means 34 is based on the total amount of time-series generated power measured by the generated power fluctuation measurement and monitoring means 32 and the time-series total amount of the power consumption value of each load measured by the load power fluctuation measurement and monitoring means 33.
  • the power consumption command value is calculated, and the remote control switch of the specific load 13 is controlled by the power consumption measurement control terminal 14 via the communication line 40 to adjust and control the overall power consumption.
  • This remote switch control sequence becomes a problem because the problem of voltage fluctuation occurs when the remote control switches of a plurality of specific loads are turned on / off at the same time. This will be described later. Specifically, in order to equally share the fluctuation of the generated power of the distributed power source 20 with the number of specific loads 13, it is allocated to the power consumption command value of each specific load 13.
  • the state of the load (water heater, etc.) (hot water temperature) may be measured in real time, and a large amount may be directed to a load having a low hot water temperature.
  • the distribution method is controlled by a preset program. Since there are many specific loads 13 in the system, the load per unit is small, and the original function can be controlled to be sufficiently fulfilled. As a result, the electric power generated by the distributed power source is indirectly consumed by the specific load 13.
  • the time delay of the communication line changes depending on the situation and is individual depending on the type of control device. May differ. It may not be possible to compensate for fluctuations in generated power by adjusting the power consumption of a specific load, but even if the magnitudes of generated power and power consumption match, frequency fluctuations will appear if a time delay occurs. ..
  • the predicted value of the generated power is obtained from the analysis of the time series data by the power fluctuation prediction means 35 in the power measurement control device 30. Therefore, this problem can be avoided by calculating the power consumption command value based on it and controlling the load with this as the target. Specifically, it is as shown in FIG.
  • the next data is predicted by the linear interpolation method using the immediately preceding three data, the predicted data is corrected using the actual data sent, and the next data is further predicted. You may do so.
  • the power measurement control device 30 receives the generated power amount Pr to the power system at intervals of 0.5 seconds from a plurality of wind power generators via the communication line 40, and has already contracted the power consumption for that amount.
  • the output is controlled by the power consumption measurement control terminal 14 attached to the electric water heaters of a large number of specific consumers, and the resulting power consumption Pc is returned.
  • the communication and control time delay is assumed to be 0.5 seconds.
  • FIG. 3 is a system configuration diagram showing a second embodiment of the power system stabilization system using the communication line according to the present invention, in which fluctuations in generated power are connected to other power systems across the power systems. It is a figure which shows the concept in the case of adjusting with a specific load. The power flow of the interconnection line of the power system changes due to the power transfer by this system, which shows that each power system does not need to perform frequency control or phase control. If the grid interconnection control device (not shown) knows the information, the actual operation does not need to be performed.
  • FIG. 4 is a system configuration diagram showing a third embodiment of a power system stabilization system using a communication line according to the present invention, and as a power storage device, a variable speed generator with a flywheel that can be charged and discharged in a short time. The case where there is 60 is shown.
  • the amount that cannot be compensated by the adjustment control of the power consumption of a specific load is adjusted by charging and discharging the energy with the flywheel of the variable speed generator.
  • the flywheel of a variable speed generator may be urgently charged and discharged with energy to improve the reliability of the system.
  • the flywheel energy and charge / discharge capacity need only be the amount of control delay, the energy is extremely small, and the storage time is considered to be several seconds to as long as one minute, so the flywheel system has the most cost advantage. It can be said that it is a power storage device.
  • the Internet has been mentioned as an example of a communication line, but it goes without saying that an intranet may also be used.
  • FIG. 5 is a control block diagram of a triangular wave comparison PWM (Pulse Width Modulation).
  • a heater-type power load which is a specific load that can be controlled on / off such as an electric water heater, is controlled by an on / off time allocation.
  • the feature here is that the phase of the reference triangle wave is delayed by ⁇ . By changing this phase ⁇ for each load, the on / off timing for each load can be shifted. That is, the plus (+) terminal of the comparator 15 for each load provided in the load adjustment control means 34 has a reference level of the power consumption command value, and the minus (-) terminal of the comparator 15 has a reference triangle wave.
  • Each input is made, and the reference level of the power consumption command value and the reference triangle wave are compared.
  • the output of the comparator 15 is 1, and when the latter is large, the output of the comparator 15 is 0.
  • the "1" and "0" signals correspond to the "on” and “off” command signals of the remote switch, and are connected to the power consumption measurement control terminal 14 of the specific load 13 via the Internet communication network 40. Control a remote switch.
  • FIG. 6 is a diagram for explaining that there is a difference in phase delay for each load and the on / off timings do not overlap. This is because when the power consumption command is constant and there are many specific loads to be controlled on / off, the loads are continuously changed as a whole. For example, when there are M units of a specific load to be controlled, one cycle (360 °) divided by M is the difference in phase delay per unit. Therefore, if a specific load is numbered, for example, 1, 2, ...
  • the first phase lag is 360 ° / M
  • the second phase lag is 360 ° / M ⁇ 2 ⁇ ⁇ ⁇ ⁇ ⁇ ⁇
  • the Nth phase lag is 360 ° / M ⁇ N
  • the (N + 1) th phase lag is 360 ° / M ⁇ (N + 1) ⁇ ⁇ ⁇ ⁇ ⁇ ⁇
  • FIG. 7 shows a flowchart for changing the reference level of the power consumption command value by observing the difference between the power consumption command value and the actual total power consumption.
  • the power consumption of each load is not the same and changes over time. In extreme cases, it may be stopped. Then, each power consumption is collected via the communication system, but if the total is insufficient, the power consumption is as per the power consumption command value by repeating the cycle of raising the reference level (or lowering in the opposite case).
  • the first power consumption command value Pd is read (S101).
  • the time-series total amount Ps of the power consumption value of each load measured by the load power fluctuation measurement monitoring means 33 is read (S102).
  • ⁇ is determined by, for example, the total amount Ps of the power consumption value in the time series, but is within 5%. If it is not within the predetermined range (No in S103), the reference level of the power consumption command value Pd is changed (S104), the process proceeds to step S105, and the changed reference level is compared with the reference triangle wave. (S105).
  • the reference level of the power consumption command value Pd is compared with the reference triangle wave (S105). .. This comparison sequence is as described in FIG.
  • the output of the comparator 15 is transmitted via the Internet communication network 40 (S106) to control the remote switch in the power consumption measurement control terminal 14 of the specific load 13. Then, the process returns to step S102, the latest total amount Ps of the power consumption value is read, and the subsequent processing is repeated.
  • the on / off ratio of the time division on / off control should be the same and asynchronous, so that they do not overlap.
  • each load is delayed by a certain time, and all the loads to be controlled are on / off controlled with the same duty ratio: d. In this way, even when the total load is suddenly changed, the load can be controlled without a time delay.
  • the control cycle time is confirmed by computer simulation assuming the case of demand of 6 minutes and 30 minutes. For individual loads, every 360 seconds (6 minutes), it turns on for 283 seconds and turns off for 77 seconds. In the second half, the operation is 256 seconds off and 104 seconds on.
  • FIG. 8 is a simulation calculation circuit in which the load is direct current and the time axis is shortened, showing that smooth control is possible by triangular wave control having a phase difference, taking the case where a specific load is 5 units as an example. .. The phase of the triangular wave is delayed by 72 degrees when 360 degrees is divided by five loads.
  • the power supply is 100V and the load is 10 ohms.
  • FIG. 9 shows the result of the simulation calculation.
  • the waveform in the upper row is the current of each load, and it repeats on and off.
  • the control triangle wave of 5 loads and the line of the power consumption command value are compared by the value between 0 and 1, and the on / off is decided. doing.
  • the waveform in the lower row shows the total amount of controlled load current, and it can be seen that the ripple of the current is within the current of one load and follows without delay in the same form as the power consumption command value.
  • the total current quickly follows the slowly changing power consumption command value, and the error of the current is that the current waveform changes finely only by turning on and off one load. Recognize.
  • FIG. 10 is a simulation calculation of a case where the power consumption command value changes stepwise. It was changed stepwise from 0.9 to 0.2, but it can be seen that the controlled total current follows without delay. From this figure, it can be seen that the total current is drastically reduced because the reference level of the triangular wave comparison is lowered and at the same time, all the loads related to it are instantly turned off. If a large number of loads are duty-controlled with their phases dispersed, even if the period is as long as 360 seconds, if the power command suddenly changes stepwise, it will follow without delay.
  • the power consumption measurement control terminal 14 is used for the load terminal (for example, distribution board) of each household. By installing the above, it can be operated by one power measurement control device 30 via the Internet communication network. In the future, when electric vehicles (EVs) become widespread in earnest, there will be an increasing number of cases in which EV storage batteries are charged at home. If the power consumption measurement control terminal 14 is installed in the charging facility and the on / off control of charging the EV storage battery is performed by using the system according to the present invention, it is possible to contribute to the stabilization of the power system.
  • EVs electric vehicles
  • the same can be performed by installing the power consumption measurement control terminal 14 there.
  • the storage battery charged by the charging equipment is not limited to the EV storage battery.
  • Power system 11
  • General power generation equipment 12
  • General load equipment 13
  • Power consumption measurement control terminal 15 Comparer 20
  • Distributed power source (wind power generator, solar power generator) 21
  • Power generation power detection unit 30
  • Power measurement control device 31
  • Communication control means 32
  • Power generation power fluctuation measurement monitoring means 33
  • Load power fluctuation measurement monitoring means 34
  • Load adjustment control means 35
  • Power fluctuation prediction means 40
  • Communication line Internet communication network
  • Other power system second power system
  • Power storage device variable speed generator with flywheel

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

Le problème à résoudre par la présente invention est de s'assurer qu'une perturbation de fréquence n'est pas générée dans un réseau électrique en raison d'une fluctuation de la puissance générée par une source d'énergie distribuée, tout en étant relié à un dispositif de stabilisation d'un réseau électrique qui fonctionne réellement. La solution selon l'invention porte sur un système dans lequel la quantité totale fluctuante de l'énergie générée d'une source d'énergie distribuée (20) est mesurée par une ligne de communication (40), et une charge spécifique (13), tel qu'un chauffe-eau électrique pour lequel la fonctionnalité finale n'est pas perdue même lorsque la sortie fluctue, est commandée par l'intermédiaire de la ligne de communication (40) de façon à ne pas influencer la commande de fréquence classique d'un réseau électrique, et une commande intégrée est réalisée en conséquence par un dispositif de mesure/commande d'énergie (30) de façon à absorber une fluctuation, ce qui permet d'éviter l'influence de l'énergie fluctuante, ledit système étant caractérisé en ce que lorsque l'activation/la désactivation de la charge spécifique (13) est effectuée par une commande PWM de comparaison d'onde triangulaire à répartition dans le temps, la phase de l'onde triangulaire de chaque charge (13) est retardée par un angle obtenu en divisant 360° par le nombre des charges (13).
PCT/JP2021/006441 2020-02-29 2021-02-19 Système de stabilisation de réseau électrique utilisant une ligne de communication WO2021172223A1 (fr)

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JP2020034488A JP6827224B1 (ja) 2020-02-29 2020-02-29 通信回線を利用した電力系統安定化システム
JP2020-034488 2020-02-29

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JP2006353079A (ja) * 2005-05-17 2006-12-28 Tokyo Institute Of Technology 通信回線を利用した電力系統安定化システム
JP2008228543A (ja) * 2007-03-16 2008-09-25 Mitsubishi Heavy Ind Ltd コジェネレーション装置
JP2012055079A (ja) * 2010-08-31 2012-03-15 Toshiba Corp 保護リレー装置

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JPH07322629A (ja) * 1994-05-27 1995-12-08 Meidensha Corp 順変換装置
JP2006353079A (ja) * 2005-05-17 2006-12-28 Tokyo Institute Of Technology 通信回線を利用した電力系統安定化システム
JP2008228543A (ja) * 2007-03-16 2008-09-25 Mitsubishi Heavy Ind Ltd コジェネレーション装置
JP2012055079A (ja) * 2010-08-31 2012-03-15 Toshiba Corp 保護リレー装置

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