WO2012063800A1 - 電力系統制御システム及び方法 - Google Patents
電力系統制御システム及び方法 Download PDFInfo
- Publication number
- WO2012063800A1 WO2012063800A1 PCT/JP2011/075676 JP2011075676W WO2012063800A1 WO 2012063800 A1 WO2012063800 A1 WO 2012063800A1 JP 2011075676 W JP2011075676 W JP 2011075676W WO 2012063800 A1 WO2012063800 A1 WO 2012063800A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- voltage
- power
- distributed
- control
- adjustment amount
- Prior art date
Links
Images
Classifications
-
- 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
-
- 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
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
- G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
-
- 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
-
- 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
-
- 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
- H02J3/381—Dispersed 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 power system control system and method for controlling the voltage of a power system in which a large number of distributed power sources are interconnected.
- DG distributed power generator
- PV photovoltaic power generation
- the PV system converts DC power generated by a photovoltaic power generation panel into an AC voltage suitable for a power system by a PCS (Power Conditioning System) and supplies the AC voltage to a distribution line.
- PCS Power Conditioning System
- Non-Patent Document 1 the distribution line voltage supplied to the low voltage consumer must be maintained within 101 ⁇ 6V for the standard voltage 100V, and within 202 ⁇ 20V for the standard voltage 200V. It must be.
- the power system consists of a high-voltage distribution line for transmitting high-voltage power output from the distribution transformer in the substation, and a low-voltage distribution line for transmitting power converted from high voltage to low voltage by the pole transformer.
- each consumer is connected to a low voltage distribution line.
- These distribution lines are connected in a radial manner so as not to form a loop, and in a conventional power system in which only a load is connected, it is assumed that the voltage decreases toward the end of the radially connected low-voltage distribution line. It was designed so that the voltage did not deviate from the proper range even at the end of the distribution line.
- the distributed power source when the distributed power source is connected to the power system, the current supplied from the power system to the consumer with the distributed power source is reduced, so the distribution line voltage may rise and deviate from the appropriate range. is there.
- the end of the low-voltage distribution line reaches the distribution line.
- the voltage deviation tends to occur toward the end, and in the high-voltage distribution line, the voltage deviation tends to occur.
- the distribution line voltage may be originally set higher due to the turn ratio of the pole transformer, and even in such a low voltage distribution line, the distribution line voltage easily deviates from the appropriate range. Furthermore, when a large number of distributed power sources are connected to any one point of the low-voltage distribution line or the high-voltage distribution line, the distribution line voltage easily deviates from the appropriate range even near the connection point.
- the distributed power source is obliged to have a function called autonomous power control (P control) and reactive power control (Q control) to suppress voltage rise autonomously.
- P control autonomous power control
- Q control reactive power control
- Non-Patent Document 1 when the distribution line voltage at the interconnection point exceeds 107 V, which is the upper limit of the appropriate range, phase advance reactive power is output to the distributed power source until the power factor reaches 85% (Q control). ) To lower the distribution line voltage, and if the distribution line voltage still does not return within the appropriate range, it is required to suppress the power generation amount (P control).
- voltage suppression control control for suppressing voltage rise
- Voltage suppression control is for customers to increase costs by providing a QS function in the PCS, PCS degradation by using the P control function and Q control function, and to reduce power sales by suppressing power generation. It is a loss. It is a problem that such losses are concentrated in some customers, and this inequality is a problem for customers who are relatively close to each other, such as customers connected to the same pole transformer. This is a big problem because power generation conditions such as these occur between the same consumers.
- Non-Patent Document 2 proposes a method for instructing all PCSs connected to a high-voltage distribution line to output reactive power.
- Non-Patent Document 2 a PCS that does not have a Q control function does not need to perform voltage suppression control. Therefore, a consumer with a PCS that does not have a Q control function and a Q control function. Inequality arises with consumers with PCS. In general, even if the control amount (voltage adjustment amount) for suppressing voltage rise by any customer is the same, the amount of change in the distribution line voltage at the interconnection point of other customers is controlled.
- Non-Patent Document 2 Depends on the location where the distributed power supply is connected Therefore, as proposed in Non-Patent Document 2, the Q control is equally assigned to the PCS linked to the position where the effect of suppressing the voltage increase is small, because the total amount of the voltage adjustment amount for suppressing the voltage increase is Therefore, the increase in voltage cannot be efficiently suppressed.
- the voltage suppression control causes a loss for the consumer, and it is desirable that the voltage adjustment amount for suppressing the voltage increase is as small as possible.
- suppression of voltage rise by Q control generally causes an increase in power distribution loss, which increases the loss for electric power companies. Therefore, it is desirable that the total amount of Q control by each distributed power source for suppressing the voltage rise is as small as possible.
- Non-Patent Document 3 proposes to pay an incentive according to the amount of reactive power output from each distributed power source to each consumer equipped with the distributed power source.
- there are many items to be considered such as deterioration of PCS by using the P control function and the Q control function, and it is difficult to determine an incentive that can eliminate inequality.
- an object of the present invention is to provide a power system control system and method capable of efficiently avoiding voltage deviation while eliminating inequality of voltage suppression control between neighboring consumers.
- a power system control system of the present invention includes a distributed power source connected to a power system, A voltage measuring unit that measures a voltage at an interconnection point of the distributed power source with respect to the power system; When the voltage at the interconnection point deviates from a predetermined appropriate range, the voltage adjustment amount for returning the voltage to the appropriate range is uniformly allocated to all the distributed power sources in a predetermined group set in advance.
- the power system control method of the present invention is a power system control system including a distributed power source connected to the power system, and a voltage measuring unit that measures a voltage at an interconnection point of the distributed power source with respect to the power system.
- the distributed power source is adjusted in voltage at the interconnection point according to the allocated voltage adjustment amount.
- FIG. 1 is a schematic diagram for explaining the principle of the power system control system of the present invention.
- FIG. 2 is a block diagram showing a configuration example of the power system control system of the present invention.
- FIG. 3 is a schematic diagram showing how the highest distribution line voltage in the group changes when the power system control method of the present embodiment is applied.
- FIG. 4 is a flowchart showing a processing procedure of the centralized control apparatus shown in FIG.
- FIG. 5 is a flowchart showing a processing procedure of the distributed processing apparatus shown in FIG.
- FIG. 1 is a schematic diagram for explaining the principle of the power system control system of the present invention.
- Fig. 1 (a) shows the electric power in which three pole transformers are connected to the high-voltage distribution lines, and three customers with distributed power sources are connected to each pole transformer via the low-voltage distribution lines.
- An example of the system configuration is shown.
- DG-A provided by the customer indicates a distributed power source including PCS having PV and reactive power control (Q control) function
- DG-B indicates a distributed power source including PCS not having PV and Q control function. Show.
- the load of each consumer has shown the general electric appliance which consumes electric power.
- each DG In the power system shown in FIG. 1A, the power generation amount of each DG increases, and the distribution line voltage at the connection point of each customer (customers 1 to 9) to the power system is shown in FIG. 1B.
- the DG measures the distribution line voltage at its interconnection point, and when voltage deviation is detected, the voltage rises by the Q control or P control. Is suppressed autonomously. In that case, as described above, the voltage suppression control concentrates on the DG of the customer linked to a specific position (the customer 9 in the example shown in FIG. 1B).
- Non-Patent Document 2 if DGs of all customers (customers 1 to 9) are instructed to output reactive power, only DG-A having a Q control function is suppressed in voltage.
- DG-B that performs control and does not have a Q control function causes inequality in which voltage suppression control is not performed. For example, when a voltage deviation occurs at the connection point of the customer 3, the DG-A of the neighboring consumers 1 and 2 performs the voltage suppression control, and the DG-B of the customer 3 does not perform the voltage suppression control. become.
- the amount of voltage change at any interconnection point in the power system varies depending on the interconnection position of the DG. It is not efficient to assign the Q control evenly to the PCS of the customer linked to the position where the voltage suppression effect is small because the total amount of the voltage adjustment amount increases.
- the ratio which the voltage adjustment amount in the arbitrary interconnection points in an electric power system gives to the voltage fluctuation of other interconnection points is called voltage sensitivity below.
- the voltage sensitivity of the consumers 1 to 6 with respect to the voltage at the connection point of the customer 9, which is a voltage deviation point, is compared with the voltage sensitivity of the consumers 7, 8, and 9. Very small. For this reason, it is not efficient to cause the DGs of the consumers 1 to 6 to execute the voltage suppression control. This is because the impedance of the pole transformer is larger than the impedance of the distribution line, so voltage fluctuations at the interconnection point of each customer to the power system are considered to be mainly caused by the pole transformer. .
- a voltage increase is suppressed for all DGs in the group including DGs having no Q control function.
- the voltage adjustment amount for doing so is assigned equally, and each DG is caused to execute voltage suppression control.
- the DG having the Q control function is caused to execute Q control corresponding to the assigned voltage adjustment amount, and the DG not having the Q control function is configured to generate power corresponding to the assigned voltage adjustment amount.
- P control for suppressing the amount is executed.
- a consumer having a DG that does not have a Q control function operates a controllable load provided by the consumer corresponding to the allocated voltage adjustment amount, and suppresses voltage rise by increasing power consumption.
- the voltage suppression by P control includes the increase in power consumption by operating a controllable load.
- Each consumer determines a control amount by P control or Q control by multiplying the assigned voltage adjustment amount by a common conversion coefficient in the group.
- each neighboring consumer executes the voltage suppression control equally. Further, voltage suppression control can be executed by both the DG having only the P control function and the DG having the Q control function.
- a group is formed with the consumer connected to the same pole transformer.
- the P control amount of the customer A is dP A
- the Q control amount of the customer A is dQ A
- the voltage change amount at the connection point of the customer B is dV B
- the value of dV B / dQ a is the customer a and B are connected to pole transformer different when connected to the same pole transformer It becomes very large as compared with the values of A and dV B / dQ A.
- the voltage adjustment amount for suppressing the voltage rise is evenly assigned to each DG of the group consisting of consumers connected to the same pole transformer, from the customers connected to different pole transformers Compared with the case where the voltage adjustment amount is uniformly allocated to each DG of the group, the total amount of the voltage adjustment amount is small.
- a group is formed by the consumers 1, 2, 3, a group is formed by the customers 4, 5, 6, and a group is formed by the consumers 7, 8, 9. ing.
- the voltage adjustment amount is evenly assigned to the customers 7, 8, 9 and the customers 7, 8, 9 are in accordance with their own facilities.
- the assigned voltage adjustment amount may be converted into a P control amount or a Q control amount using a common conversion coefficient within the group, and voltage suppression control may be performed.
- DG-A with Q control function performs Q control
- consumers with DG-B without Q control function are energy storage functions such as electric vehicles (EV) and heat pump water heaters (HP). If you have a controllable load with, you can suppress the voltage rise without reducing the amount of power generation by consuming them.
- EV electric vehicles
- HP heat pump water heaters
- each customer connected to the same pole transformer has almost the same voltage sensitivity to the voltage deviation point, and the voltage sensitivity is different from the voltage deviation point.
- the value is larger for each consumer connected to the same pole transformer as the voltage deviation point than for each consumer connected to the appliance.
- the voltage adjustment amount for suppressing the voltage rise is equally allocated to each consumer connected to the same pole transformer as the voltage deviation point, the same pole transformer that is a neighboring consumer is assigned.
- the voltage deviation can be efficiently avoided while eliminating the inequality between the connected consumers.
- FIG. 2 is a block diagram showing a configuration example of the power system control system of the present invention.
- a plurality of pole transformers 203 are connected to a distribution transformer 201 via a high-voltage distribution line 202, and each pole transformer 203 is distributed.
- a plurality of consumers power consumers 205 to 211 in FIG. 2 each having a power source are connected via low-voltage distribution lines 204.
- the customers 205 to 211 have a distributed processing apparatus 221 that controls the operation of the PV system 224 or 225, the PV system 224 or 225 that is a distributed power source, and can transmit and receive information to and from the outside using the communication unit 212.
- a general load 222 that is a general electric appliance that consumes electric power, which is not controlled by the device 221, and a measuring instrument 220 that measures electric power (amount of electric power sold) generated by the PV system 224 or 225 and flowing backward to the electric power system.
- the consumer may have a controllable load 223 whose power consumption can be controlled (in the example shown in FIG. 2, the consumers 205 and 206).
- the customer who is not provided with PV system 224 or 225 is abbreviate
- the PV systems 224 and 225 include a voltage measurement unit, a PV panel, a PCS, and the like (not shown).
- the voltage measurement unit measures the distribution line voltage at the connection point of the PV system 224 or 225.
- the distribution line voltage measured by the voltage measuring unit is notified to the central control device 240 via the distributed processing device 221.
- the PV panel is a power generation facility that generates power using energy obtained from sunlight.
- the PCS converts the power generated by the PV panel into a voltage / frequency that can be linked to the power system.
- the PV systems 224 and 225 have a function of controlling reactive power or active power in accordance with instructions from the centralized controller 240.
- the PV system 225 shown in FIG. 2 is a system having a reactive power control (Q control) function, and the PV system 224 is a system not having a Q control function.
- Q control reactive power control
- the distributed processing device 221 is connected to the central control device 240 via the communication unit 212 so as to be able to transmit and receive information.
- the communication means 212 a known Internet, PLC (Power Line Communications), wireless communication means or the like may be used.
- the distributed processing device 221 causes the PV systems 224 and 225 to execute Q control or P control in accordance with an instruction from the centralized control device 240, and at the distribution line voltage measured at the voltage measuring unit or the measuring device 220.
- the centralized control device 240 is notified of the power flowing backward to the measured power system via the communication means 212.
- the central control device 240 transmits / receives information to / from each distributed processing device 221 via the communication unit 212 and controls the operations of the PV systems 224 and 225 and the controllable load 223 via the distributed processing device 221.
- the distributed processing device 221 and the central control device 240 can be realized by, for example, an information processing device (computer) including a CPU, a storage device, and a known communication interface.
- the controllable load 223 is an electric device capable of controlling the power consumption, and the power consumption of the controllable load 223 is instructed from the centralized control device 240 via the distributed processing device 221.
- the controllable load 223 may be an energy storage device such as EV, HP, or storage battery that can individually set the time for taking in power from the power system or the PV system 224 and the time for actually using the taken-in power. desirable.
- FIG. 2 shows a configuration example in which the power system control system includes the distributed processing device 221 and the centralized control device 240 independently, but the functions of the centralized control device 240 are provided in an arbitrary distributed processing device 221. Also good. Further, FIG. 2 shows a configuration example in which the voltage measurement unit is built in the PV systems 224 and 225, but the voltage measurement unit may be an apparatus independent of the PV systems 224 and 225.
- each PV of the group consisting of consumers connected to the low-voltage distribution line 204 is used.
- the system 224 and 225 are instructed to perform voltage suppression control from the central control device 240 via the distributed processing device 221.
- FIG. 3 is a schematic diagram showing how the highest distribution line voltage in the group changes when the power system control method of the present embodiment is applied.
- the upper limit value (107V in Japan) of the appropriate value of the distribution line voltage or a value slightly lower than the upper limit value (for example, 0.1V) is set.
- One threshold value V ST is set, and a value lower than the first threshold value V ST (for example, V ST ⁇ 0.3 V) is set as the second threshold value V ED .
- the centralized control device 240 instructs all the distributed processing devices 221 in the group to increase the voltage adjustment amount for suppressing the voltage increase. Thereafter, when V MAX decreases due to an increase in the voltage adjustment amount for suppressing the voltage increase and reaches the first threshold value VST , the central control device 240 increases the voltage to all the distributed processing devices 221 in the group. An instruction is given to make the voltage adjustment amount for suppressing noise constant.
- the centralized control device 240 suppresses the voltage increase in all the distributed processing devices 221 in the group.
- the voltage adjustment amount is instructed to be constant.
- FIG. 4 is a flowchart showing a processing procedure of the central control apparatus shown in FIG.
- the central control device 240 first groups each consumer in step 402. As described above, in this embodiment, a group is formed for each customer connected to the same pole transformer 203.
- each consumer for each pole transformer 203 As a method of grouping each consumer for each pole transformer 203, a method of forming a group based on a power distribution diagram obtained from an electric power company, a method of forming a group based on a distribution line voltage, There is a method of forming a group based on voltage sensitivity.
- the centralized control device 240 acquires the distribution line voltage at the interconnection point measured by the voltage measurement unit included in each PV system 224 and 225, and the distribution line voltage value is Allocate nearby customers to the same group.
- the centralized control device 240 may distribute customers having similar voltage sensitivity values to the same group.
- the voltage sensitivity can be obtained from a correlation value between the amount of power that flows backward from the interconnection point for each consumer to the power system and the amount of change in the distribution line voltage at the interconnection point for each customer.
- the amount of power to be reversely flowed from the customer to the power system may be measured by the measuring device 220 as described above and notified to the centralized control device 240 by the distributed processing device 221.
- the amount of change in the distribution line voltage is obtained by recording the distribution line voltage at the interconnection point measured by the voltage measurement unit included in the PV systems 224 and 225 and obtaining the time differential value thereof.
- the centralized controller 240 uses conversion coefficients used for calculating the P control amount and the Q control amount corresponding to the voltage adjustment amount for suppressing the voltage increase instructed to each distributed processing device 221 in step 403.
- the obtained conversion coefficient is notified to each distributed processing device 221.
- the conversion coefficient is set so that, for example, the ratio between the P control amount and the Q control amount is 1 / (dV / dP): 1 / (dV / dQ).
- V is the distribution line voltage at the interconnection point of any customer in the group
- P is the active power amount
- Q is the reactive power amount.
- dV / dP and dV / dQ may be obtained from, for example, the amount of power to be reversely flown from the customer to the power system and the amount of change in the distribution line voltage at the interconnection point for each customer, and the correlation value thereof.
- an approximate value obtained by dividing the real part of the impedance of the pole transformer 203 by a representative value (for example, 100 V) of the secondary voltage of the pole transformer 203 may be used.
- an approximate value obtained by dividing the imaginary part of the impedance of the pole transformer 203 by the representative value (for example, 100 V) of the secondary voltage of the pole transformer 203 may be used. Even if such approximate values are used for dV / dP and dV / dQ, conversion coefficients having no practical problem can be obtained.
- the central control apparatus 240 acquires the value of the distribution line voltage from the distributed processing apparatus 221 of each customer, and substitutes the maximum distribution line voltage value in the group into the variable V MAX (step 404).
- the central control unit 240 determines whether higher than the first threshold value V ST. If the variable V MAX is higher than the first threshold value V ST , the central control apparatus 240 proceeds to the processing of steps 413 to 418.
- the central control apparatus 240 determines whether or not the variable V MAX is lower than the second threshold value V ED in step 405. When the variable V MAX is lower than the second threshold value V ED , the central control apparatus 240 proceeds to the processing of steps 406 to 411.
- the centralized control device 240 determines that the total amount of voltage adjustment amount for suppressing the voltage increase by all consumers in the corresponding group in step 413 is predetermined. It is determined whether or not the upper limit value has been reached.
- an upper limit value is set in advance for the total amount of voltage adjustment amount for suppressing the voltage rise that can be controlled by the centralized control device 240, and when the voltage deviation is not eliminated even when the upper limit value is reached, The process proceeds to autonomous voltage suppression control by the PV systems 224 and 225.
- Non-Patent Document 1 As the upper limit value of the voltage adjustment amount by all the PV systems 224 and 225 that can be controlled by the centralized control device 240, for example, the output value of reactive power by all the PV systems 224 and 225 in the group is defined in Non-Patent Document 1. There is a method of setting a lower limit value, specifically, a value at which the power factor becomes 85%.
- the voltage suppression control by the further centralized control device 240 is not executed, and the PV systems 224 and 225 are Voltage increase is suppressed by an autonomous voltage suppression function (specified in Non-Patent Document 1).
- the central control apparatus 240 repeats the processing from step 404.
- the central control device 240 When the total amount of the voltage adjustment amount for suppressing the voltage increase by the consumers in the group has not reached the predetermined upper limit value, the central control device 240 is equal to all the consumers in the group in step 414. To increase the voltage adjustment amount. At this time, the voltage adjustment amount instructed to each consumer includes an active power amount, a reactive power amount, and a voltage value, and a time differential value of these active power amount, reactive power amount, and voltage value.
- the centralized control device 240 records the voltage change of the maximum distribution line voltage V MAX in the group, and dV MAX / obtained from the recorded value. What is necessary is just to instruct
- the central control apparatus 240 has a total voltage adjustment amount (total voltage adjustment amount allocated to all consumers in the group) of (V MAX ⁇ V ST) / (dV / dP ) and so that may be evenly distributed active energy to the customers.
- the central control device 240 allows each consumer to supply the active power amount so that the total amount of the voltage adjustment amount becomes (dV MAX / dT) ⁇ (dV / dP). What is necessary is just to distribute a time differential value equally.
- the conversion coefficient obtained in step 403 is (dV / dP) / (dV / dQ), and a consumer who performs reactive power control can set the instructed active power amount to (dV / dP) / (dV / The reactive power value may be changed in such a direction as to suppress the voltage rise by the value multiplied by dQ).
- the central control apparatus 240 allows each customer to make the total amount of the voltage adjustment amount (V MAX ⁇ V ST ) / (dV / dQ). It is sufficient to distribute the reactive power amount evenly.
- the centralized control device 240 allows each consumer to set the reactive power amount so that the sum of the voltage adjustment amounts becomes (dV MAX / dT) ⁇ (dV / dQ). What is necessary is just to distribute a time differential value equally.
- the conversion coefficient obtained in step 403 is (dV / dQ) / (dV / dP), and a consumer who performs active power control sets (dV / dQ) / (dV / The active power value may be changed in a direction that suppresses the voltage increase by a value multiplied by dP).
- the central control device 240 evenly distributes the voltage value to each consumer so that the sum of the voltage adjustment amounts becomes (V MAX -V ST ). do it.
- the centralized control device 240 can evenly distribute the time differential value of the voltage value to each consumer so that the sum of the voltage adjustment amounts is (dV MAX / dT). Good.
- the conversion coefficient obtained in step 403 is (dV / dP) or (dV / dQ), and the consumer who performs active power control increases the voltage by a value obtained by dividing the instructed voltage value by dV / dP. What is necessary is just to change an active power value in the direction which suppresses. Moreover, the consumer who performs reactive power control should just change a reactive power value in the direction which suppresses a voltage rise only by the value which divided the instructed voltage value by dV / dQ.
- the voltage adjustment amount allocated to each consumer may use an equal value obtained by dividing the total amount of voltage adjustment amount by the number of consumers as described above, and within the range where the total amount of voltage adjustment amount does not change. You may use the value which provided the predetermined weight for every consumer with respect to the value. For example, a weight proportional to the capacity of the power generation equipment included in each consumer may be given to the equal value, or a weight proportional to the reverse tide flow rate of each consumer may be given. A weight proportional to the amount of power sold for one month may be given.
- the central control apparatus 240 waits for a certain time in step 415, and then determines whether or not voltage deviation continues in steps 416 and 417. If the voltage deviation continues, the centralized controller 240 returns to step 413 and repeats the processing of steps 413 to 417. If the voltage deviation has been resolved, the central controller 240 instructs each customer's PV system 224, 225 in step 418 to keep the voltage adjustment amount for suppressing the voltage rise from step 404. Repeat the process.
- the central control device 240 first starts the PV system 224 of each consumer at step 406. It is determined whether or not 225 is executing voltage suppression control, that is, whether or not the voltage adjustment amount for suppressing the voltage increase can be further reduced. When the PV systems 224 and 225 of the respective consumers are not executing the voltage suppression control, the central control device 240 repeats the processing from Step 404.
- step 407 the reverse process of step 414 described above may be executed. Specifically, (V MAX ⁇ V ST ) used for calculating the total amount of voltage adjustment is replaced with (V MAX ⁇ V ED ), and the active power value or the reactive power value is changed in a direction to suppress the voltage increase. May be replaced with a process of changing the active power value or the reactive power value in a direction not to suppress the voltage rise.
- Central controller 240 after a predetermined time wait at step 408 repeats steps 406-409 in steps 409 and 410 until the variable V MAX exceeds a second threshold value V ED.
- the centralized controller 240 keeps the voltage adjustment amount for suppressing the voltage rise in the PV systems 224 and 225 of each customer constant at step 411. After the instruction is given, the processing from step 404 is repeated.
- the central control device 240 determines that the other pole change You may request
- a voltage suppression control is requested to a group connected to the pole transformer 203 adjacent to the pole transformer 203 where the voltage deviation has occurred.
- the distribution substation side is the upstream side and the terminal side of the low-voltage distribution line 204 is the downstream side when viewed from the pole transformer 203 where the voltage deviation occurs, the column downstream from the pole transformer 203 where the voltage deviation occurs There is a method of requesting voltage suppression control to a group connected to the upper transformer 203.
- the pole transformer 203 downstream from the group as viewed from the distribution substation By requesting the connected group to perform voltage suppression control, it is possible to avoid voltage deviation while suppressing an increase in voltage adjustment amount.
- voltage suppression control is requested to a group adjacent to the group where the voltage deviation has occurred at this time, it is possible to reduce inequalities between neighboring consumers.
- voltage suppression control is requested to the most downstream group as viewed from the distribution substation, the group is downstream from all groups connected to the same high-voltage distribution line 202. Even when a deviation occurs and voltage suppression control by the centralized control device 240 is disabled in the group, the voltage deviation can be avoided while suppressing an increase in the voltage adjustment amount.
- voltage suppression control is applied to a group including a consumer having the next highest voltage after the group in which the voltage deviation has occurred, or a group including a consumer having the largest change in the distribution line voltage V (dV / dT). Just ask.
- the distributed processing device 221 acquires the conversion coefficient corresponding to the own group obtained by the central control device 240 in step 403 in FIG. 4 from the central control device 240.
- the distributed processing device 221 when the distributed processing device 221 is instructed to increase the voltage adjustment amount from the central control device 240 in step 414 of FIG.
- the voltage adjustment amount is increased in order of the active power control (P control) by the load 223 and the active power control (P control) by the power generation amount of the PV systems 224 and 225 to suppress the voltage rise.
- the distributed processing device 221 when the distributed processing device 221 is instructed to reduce the voltage adjustment amount from the central control device 240 in step 407 of FIG.
- the voltage adjustment amount is reduced in the order of active power control (P control) and reactive power control (Q control) by the load 223.
- FIG. 5 is a flowchart showing a processing procedure of the distributed processing apparatus shown in FIG.
- the distributed processing device 221 first acquires the conversion coefficient obtained in step 403 of FIG. 4 from the centralized control device 240 in step 502.
- the distributed processing device 221 waits until a change in the voltage adjustment amount is instructed from the central control device 240 (steps 503 and 513). If an instruction to increase the voltage adjustment amount is instructed, the process proceeds to step 504. If an instruction to reduce the voltage adjustment amount is given, the process proceeds to step 513.
- the distributed processing device 221 When an instruction to increase the voltage adjustment amount is given, the distributed processing device 221 first determines in step 504 whether or not reactive power control (Q control) by the PCS of the PV systems 224 and 225 is possible. When the Q control is possible, the distributed processing device 221 converts the voltage adjustment amount instructed from the central control device 240 into the Q control amount using the conversion coefficient (step 505), and with respect to the PCS of the PV systems 224 and 225, Then, a change (increase) to the Q control amount after conversion is instructed (step 506).
- Q control reactive power control
- the distributed processing device 221 proceeds to step 507 and uses the controllable load 223. Take control.
- the distributed processing device 221 first determines whether or not active power control (P control) by load increase using the controllable load 223 is possible (step 507).
- P control active power control
- the distributed processing device 221 converts the voltage adjustment amount instructed from the central control device 240 into the P control amount by using the conversion coefficient (step 508), and can be controlled.
- the load 223 is instructed to change to the P control amount after conversion (increase in load) (step 509).
- controllable load 223 is not provided or the controllable load 223 is already operating at the maximum load, the distributed processing device 221 proceeds to step 510 and performs P control based on the power generation amount of the PV systems 224 and 225. .
- step 510 the distributed processing device 221 determines whether or not P control by the PCS of the PV systems 224 and 225 is possible.
- the distributed processing device 221 converts the voltage adjustment amount instructed from the central control device 240 into the P control amount using the conversion coefficient (step 511), and converts the PCS after the conversion.
- An instruction to change to the P control amount (reduction of power generation amount) is given (step 512).
- the distributed processing device 221 repeats the processing from step 503.
- the distributed processing device 221 executes the processing of steps 514 to 522.
- the processing in steps 514 to 522 is opposite to the processing when the central control device 240 instructed to increase the voltage adjustment amount in steps 504 to 512 is P control by PCS, P control by controllable load 223, PCS
- the voltage adjustment amount may be reduced in the order of Q control according to.
- the P control process procedure by the PCS is the same as the above-described steps 510 to 512
- the P control process procedure by the controllable load 223 is the same as the above-described steps 507 to 509
- the Q control process procedure by the PCS is as follows. This is the same as steps 504 to 506 described above.
- the energy storage device such as a storage battery or a heat pump water heater for the controllable load 223.
- the energy storage device has a rated capacity that is the upper limit of the amount of energy that can be stored. For this reason, it is desirable for the consumer to have a plurality of controllable loads 223. In that case, when the amount of energy stored in the controllable load 223 reaches the rated capacity by P control for an arbitrary controllable load 223, the controllable load 223 for storing energy may be switched.
- the distributed processing device 221 may assign the voltage adjustment amount for the controllable load 223 used so far to the controllable load 223 after switching, and execute the processing from step 504 in FIG.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Evolutionary Computation (AREA)
- Medical Informatics (AREA)
- Software Systems (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
Description
前記電力系統に対する前記分散型電源の連系点の電圧を測定する電圧計測部と、
前記連系点における電圧が所定の適正範囲を逸脱したとき、該電圧を前記適正範囲に戻すための電圧調整量を、予め設定した所定のグループ内の全ての前記分散型電源に均等に割り当てる集中制御装置と、
前記集中制御装置から割り当てられた前記電圧調整量にしたがって前記分散型電源に前記連系点における電圧を調整させる分散処理装置と、
を有する。
前記連系点における電圧が所定の適正範囲を逸脱したとき、該電圧を前記適正範囲に戻すための電圧調整量を、予め設定した所定のグループに所属する全ての前記分散型電源に均等に割り当て、
前記割り当てられた前記電圧調整量にしたがって前記分散型電源に前記連系点における電圧を調整させる方法である。
Claims (10)
- 電力系統に接続される分散型電源と、
前記電力系統に対する前記分散型電源の連系点の電圧を測定する電圧計測部と、
前記連系点における電圧が所定の適正範囲を逸脱したとき、該電圧を前記適正範囲に戻すための電圧調整量を、予め設定した所定のグループ内の全ての前記分散型電源に均等に割り当てる集中制御装置と、
前記集中制御装置から割り当てられた前記電圧調整量にしたがって前記分散型電源に前記連系点における電圧を調整させる分散処理装置と、
を有する電力系統制御システム。 - 前記分散処理装置は、
前記分散型電源から前記電力系統に逆潮流させる無効電力または有効電力により前記連系点における電圧を調整する請求項1記載の電力系統制御システム。 - 電力消費量が制御可能な可制御負荷を備え、
前記分散処理装置は、
前記分散型電源から前記電力系統に逆潮流させる進相無効電力、前記分散型電源の発電量、または前記可制御負荷の電力消費量で、前記連系点における電圧を調整する請求項2記載の電力系統制御システム。 - 前記分散処理装置は、
前記連系点における電圧をV、前記有効電力量をP、前記無効電力量をQとしたとき、前記無効電力による電圧調整量と前記有効電力による電圧調整量との比を、1/(dV/dP):1/(dV/dQ)とする請求項1から3のいずれか1項記載の電力系統制御システム。 - 前記グループは、
同一の柱上変圧器に接続された、前記分散型電源、前記電圧計測部及び前記分散処理装置を備えた需要家で形成され、
前記集中制御装置は、
前記電圧調整量を、前記電圧が前記適正範囲を逸脱した連系点の分散型電源を含むグループ内の全ての前記分散型電源に均等に割り当てる請求項1から4のいずれか1項記載の電力系統制御システム。 - 電力系統に接続される分散型電源と、前記電力系統に対する前記分散型電源の連系点の電圧を測定する電圧計測部とを備えた電力系統制御システムの電力制御方法であって、
前記連系点における電圧が所定の適正範囲を逸脱したとき、該電圧を前記適正範囲に戻すための電圧調整量を、予め設定した所定のグループに所属する全ての前記分散型電源に均等に割り当て、
前記割り当てられた前記電圧調整量にしたがって前記分散型電源に前記連系点における電圧を調整させる電力系統制御方法。 - 前記分散型電源から前記電力系統に逆潮流させる無効電力または有効電力により前記連系点における電圧を調整する請求項6記載の電力系統制御方法。
- 前記電力系統制御システムに電力消費量が制御可能な可制御負荷を備え、
前記分散型電源から前記電力系統に逆潮流させる進相無効電力、前記分散型電源の発電量、または前記可制御負荷の電力消費量で、前記連系点における電圧を調整する請求項7記載の電力系統制御方法。 - 前記連系点における電圧をV、前記有効電力量をP、前記無効電力量をQとしたとき、前記無効電力による電圧調整量と前記有効電力による電圧調整量との比を、1/(dV/dP):1/(dV/dQ)とする請求項6から8のいずれか1項記載の電力系統制御方法。
- 前記グループは、
同一の柱上変圧器に接続された、前記分散型電源、前記電圧計測部及び前記分散処理装置を備えた需要家で形成され、
前記電圧調整量を、前記電圧が前記適正範囲を逸脱した連系点の分散型電源を含むグループ内の全ての前記分散型電源に均等に割り当てる請求項6から9のいずれか1項記載の電力系統制御方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/823,594 US9612584B2 (en) | 2010-11-08 | 2011-11-08 | Electric power grid control system and method for electric power control |
JP2012542922A JP6048146B2 (ja) | 2010-11-08 | 2011-11-08 | 電力系統制御システム及び方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010249745 | 2010-11-08 | ||
JP2010-249745 | 2010-11-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012063800A1 true WO2012063800A1 (ja) | 2012-05-18 |
Family
ID=46050943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/075676 WO2012063800A1 (ja) | 2010-11-08 | 2011-11-08 | 電力系統制御システム及び方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US9612584B2 (ja) |
JP (2) | JP6048146B2 (ja) |
WO (1) | WO2012063800A1 (ja) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103078330A (zh) * | 2013-02-25 | 2013-05-01 | 华东电网有限公司 | 辅助电压调控决策的关系型电压监控指标方法 |
JP2013183578A (ja) * | 2012-03-02 | 2013-09-12 | Kyocera Corp | 制御装置、及び制御方法 |
WO2014001055A2 (de) * | 2012-06-29 | 2014-01-03 | Siemens Aktiengesellschaft | Verfahren und vorrichtung zur dezentralen regelung einer spannung in einem verteilnetz |
WO2014013010A3 (de) * | 2012-07-18 | 2014-03-27 | Sma Solar Technology Ag | Steuerung von betriebsmitteln über beeinflussung der netzspannung |
WO2014075970A2 (de) * | 2012-11-13 | 2014-05-22 | Sma Solar Technology Ag | Verfahren zur spannungsstabilisierung in einem elektrischen verteilnetz und vorrichtung hierzu |
WO2015052824A1 (ja) * | 2013-10-11 | 2015-04-16 | 株式会社日立製作所 | 分散電源管理システム |
KR20160091896A (ko) * | 2013-10-21 | 2016-08-03 | 리스토어 엔브이 | 포트폴리오 관리된, 수요측 응답 시스템 |
EP2961030A4 (en) * | 2013-02-19 | 2016-11-02 | Nec Corp | POWER FLOW CONTROL SYSTEM AND ENERGY FLOW MANAGEMENT PROCESS |
JP2018107981A (ja) * | 2016-12-28 | 2018-07-05 | 積水化学工業株式会社 | 配電系統の潮流制御方法及び配電システム |
US10079501B2 (en) | 2013-02-08 | 2018-09-18 | Nec Corporation | Battery control device, battery control system, battery control method, and recording medium |
JP2021168598A (ja) * | 2016-12-22 | 2021-10-21 | 株式会社日立製作所 | 自然エネルギー発電システム、無効電力コントローラまたは自然エネルギー発電システムの制御方法 |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9553453B2 (en) * | 2013-03-15 | 2017-01-24 | Dominion Resources, Inc. | Management of energy demand and energy efficiency savings from voltage optimization on electric power systems using AMI-based data analysis |
EP2869422A1 (en) * | 2013-11-04 | 2015-05-06 | ABB Technology AG | Method and system for monitoring a grid voltage in a low voltage grid |
US9882386B2 (en) * | 2014-04-23 | 2018-01-30 | Nec Corporation | Consensus-based distributed cooperative control for microgrid voltage regulation and reactive power sharing |
US11063431B2 (en) * | 2014-07-04 | 2021-07-13 | Apparent Labs Llc | Hierarchical and distributed power grid control |
US10096998B2 (en) | 2014-07-23 | 2018-10-09 | Mitsubishi Electric Research Laboratories, Inc. | Distributed reactive power control in power distribution systems |
US9829880B2 (en) * | 2014-11-20 | 2017-11-28 | General Electric Company | System and method for modelling load in an electrical power network |
EP3374838B1 (en) * | 2015-11-09 | 2020-08-05 | ABB Schweiz AG | Power distribution system |
US10008317B2 (en) | 2015-12-08 | 2018-06-26 | Smart Wires Inc. | Voltage or impedance-injection method using transformers with multiple secondary windings for dynamic power flow control |
US10418814B2 (en) | 2015-12-08 | 2019-09-17 | Smart Wires Inc. | Transformers with multi-turn primary windings for dynamic power flow control |
US10903653B2 (en) | 2015-12-08 | 2021-01-26 | Smart Wires Inc. | Voltage agnostic power reactor |
US10180696B2 (en) | 2015-12-08 | 2019-01-15 | Smart Wires Inc. | Distributed impedance injection module for mitigation of the Ferranti effect |
US10199150B2 (en) | 2015-12-10 | 2019-02-05 | Smart Wires Inc. | Power transmission tower mounted series injection transformer |
US10097037B2 (en) | 2016-02-11 | 2018-10-09 | Smart Wires Inc. | System and method for distributed grid control with sub-cyclic local response capability |
US10218175B2 (en) | 2016-02-11 | 2019-02-26 | Smart Wires Inc. | Dynamic and integrated control of total power system using distributed impedance injection modules and actuator devices within and at the edge of the power grid |
US10651633B2 (en) | 2016-04-22 | 2020-05-12 | Smart Wires Inc. | Modular, space-efficient structures mounting multiple electrical devices |
CN109314394B (zh) * | 2016-06-08 | 2022-10-21 | 日立能源瑞士股份公司 | 微电网的分布式网络控制 |
WO2018003042A1 (ja) * | 2016-06-29 | 2018-01-04 | 三菱電機株式会社 | 給湯システム、給湯機及び給湯機の制御方法 |
US10468880B2 (en) | 2016-11-15 | 2019-11-05 | Smart Wires Inc. | Systems and methods for voltage regulation using split-conductors with loop current reduction |
GB201710090D0 (en) | 2017-06-23 | 2017-08-09 | Selc Ireland Ltd | Method and system for controlling power grid stability utilising mains frequency dynamic load control |
US10666038B2 (en) | 2017-06-30 | 2020-05-26 | Smart Wires Inc. | Modular FACTS devices with external fault current protection |
EP3565077B1 (de) * | 2018-05-04 | 2022-01-05 | FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V. | Aktiver filter |
JP7044666B2 (ja) * | 2018-08-29 | 2022-03-30 | 一般財団法人電力中央研究所 | 電力需給制御装置および電力需給制御方法 |
CN109543910A (zh) * | 2018-11-27 | 2019-03-29 | 长沙理工大学 | 一种考虑偏差考核惩罚的售电公司电量鲁棒决策电路及方法 |
CN110994702A (zh) * | 2019-12-26 | 2020-04-10 | 孝感科先电力工程咨询设计有限责任公司 | 一种基于功率-电压灵敏度的配电网分区电压控制方法 |
US11870261B2 (en) * | 2021-05-27 | 2024-01-09 | Power Engineers, Incorporated | Method for controlling voltage and reactive power for an electrical grid |
US11870260B2 (en) * | 2021-05-27 | 2024-01-09 | Power Engineers, Incorporated | System for controlling voltage and reactive power for an electrical grid |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001352682A (ja) * | 2000-06-09 | 2001-12-21 | Sharp Corp | インバータ装置および電力を商用系統に逆潮流する方法 |
JP2006121853A (ja) * | 2004-10-25 | 2006-05-11 | Hitachi Ltd | 分散発電装置の制御方法及び装置 |
JP2010200539A (ja) * | 2009-02-26 | 2010-09-09 | Sanyo Electric Co Ltd | 系統連系装置及び配電システム |
JP2010213542A (ja) * | 2009-03-12 | 2010-09-24 | Kansai Electric Power Co Inc:The | 配電系統 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3591300B2 (ja) | 1998-04-24 | 2004-11-17 | 株式会社日立製作所 | 電力供給制御装置 |
JP2002152976A (ja) | 2000-11-13 | 2002-05-24 | Sharp Corp | 分散電源電力供給システム |
JP4019150B2 (ja) | 2004-03-17 | 2007-12-12 | 独立行政法人産業技術総合研究所 | 配電系統情報監視システム |
JP4498247B2 (ja) | 2005-09-08 | 2010-07-07 | 財団法人電力中央研究所 | 配電系統の電圧制御方法、装置並びにプログラム |
US20070100506A1 (en) * | 2005-10-31 | 2007-05-03 | Ralph Teichmann | System and method for controlling power flow of electric power generation system |
JP4890920B2 (ja) | 2006-04-14 | 2012-03-07 | 株式会社日立製作所 | 複数の分散型電源が連系された配電系統の電力品質維持支援方法及び電力品質維持支援システム |
US8097980B2 (en) * | 2007-09-24 | 2012-01-17 | Sunlight Photonics Inc. | Distributed solar power plant and a method of its connection to the existing power grid |
JP2009153333A (ja) | 2007-12-21 | 2009-07-09 | Tokyo Gas Co Ltd | 分散型電源システム及びその制御方法 |
JP4719760B2 (ja) | 2008-03-25 | 2011-07-06 | 株式会社日立製作所 | 分散型電源群の制御方法及びシステム |
US7839024B2 (en) * | 2008-07-29 | 2010-11-23 | General Electric Company | Intra-area master reactive controller for tightly coupled windfarms |
US8041465B2 (en) * | 2008-10-09 | 2011-10-18 | General Electric Company | Voltage control at windfarms |
US8401709B2 (en) * | 2009-11-03 | 2013-03-19 | Spirae, Inc. | Dynamic distributed power grid control system |
JP5618294B2 (ja) | 2010-10-13 | 2014-11-05 | 独立行政法人産業技術総合研究所 | 高圧・低圧配電系統電圧調節システム |
-
2011
- 2011-11-08 US US13/823,594 patent/US9612584B2/en active Active
- 2011-11-08 WO PCT/JP2011/075676 patent/WO2012063800A1/ja active Application Filing
- 2011-11-08 JP JP2012542922A patent/JP6048146B2/ja active Active
-
2015
- 2015-07-27 JP JP2015147686A patent/JP6048546B2/ja active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001352682A (ja) * | 2000-06-09 | 2001-12-21 | Sharp Corp | インバータ装置および電力を商用系統に逆潮流する方法 |
JP2006121853A (ja) * | 2004-10-25 | 2006-05-11 | Hitachi Ltd | 分散発電装置の制御方法及び装置 |
JP2010200539A (ja) * | 2009-02-26 | 2010-09-09 | Sanyo Electric Co Ltd | 系統連系装置及び配電システム |
JP2010213542A (ja) * | 2009-03-12 | 2010-09-24 | Kansai Electric Power Co Inc:The | 配電系統 |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013183578A (ja) * | 2012-03-02 | 2013-09-12 | Kyocera Corp | 制御装置、及び制御方法 |
WO2014001055A3 (de) * | 2012-06-29 | 2014-05-30 | Siemens Aktiengesellschaft | Verfahren und vorrichtung zur dezentralen regelung einer spannung in einem verteilnetz |
WO2014001055A2 (de) * | 2012-06-29 | 2014-01-03 | Siemens Aktiengesellschaft | Verfahren und vorrichtung zur dezentralen regelung einer spannung in einem verteilnetz |
WO2014013010A3 (de) * | 2012-07-18 | 2014-03-27 | Sma Solar Technology Ag | Steuerung von betriebsmitteln über beeinflussung der netzspannung |
WO2014075970A3 (de) * | 2012-11-13 | 2014-12-31 | Sma Solar Technology Ag | Verfahren zur spannungsstabilisierung in einem elektrischen verteilnetz und vorrichtung hierzu |
WO2014075970A2 (de) * | 2012-11-13 | 2014-05-22 | Sma Solar Technology Ag | Verfahren zur spannungsstabilisierung in einem elektrischen verteilnetz und vorrichtung hierzu |
US10784702B2 (en) | 2013-02-08 | 2020-09-22 | Nec Corporation | Battery control device, battery control system, battery control method,and recording medium |
US10079501B2 (en) | 2013-02-08 | 2018-09-18 | Nec Corporation | Battery control device, battery control system, battery control method, and recording medium |
US10069302B2 (en) | 2013-02-19 | 2018-09-04 | Nec Corporation | Power flow control system and power flow control method |
EP2961030A4 (en) * | 2013-02-19 | 2016-11-02 | Nec Corp | POWER FLOW CONTROL SYSTEM AND ENERGY FLOW MANAGEMENT PROCESS |
CN103078330A (zh) * | 2013-02-25 | 2013-05-01 | 华东电网有限公司 | 辅助电压调控决策的关系型电压监控指标方法 |
WO2015052824A1 (ja) * | 2013-10-11 | 2015-04-16 | 株式会社日立製作所 | 分散電源管理システム |
JPWO2015052824A1 (ja) * | 2013-10-11 | 2017-03-09 | 株式会社日立製作所 | 分散電源管理システム |
KR20160091896A (ko) * | 2013-10-21 | 2016-08-03 | 리스토어 엔브이 | 포트폴리오 관리된, 수요측 응답 시스템 |
JP2016540472A (ja) * | 2013-10-21 | 2016-12-22 | レストレ・エンフェーRestore Nv | ポートフォリオ管理によるデマンドサイド・レスポンスシステム |
KR102233790B1 (ko) | 2013-10-21 | 2021-03-30 | 리스토어 엔브이 | 포트폴리오 관리된, 수요측 응답 시스템 |
JP2021168598A (ja) * | 2016-12-22 | 2021-10-21 | 株式会社日立製作所 | 自然エネルギー発電システム、無効電力コントローラまたは自然エネルギー発電システムの制御方法 |
JP7304385B2 (ja) | 2016-12-22 | 2023-07-06 | 株式会社日立製作所 | 自然エネルギー発電システム、無効電力コントローラまたは自然エネルギー発電システムの制御方法 |
JP2018107981A (ja) * | 2016-12-28 | 2018-07-05 | 積水化学工業株式会社 | 配電系統の潮流制御方法及び配電システム |
Also Published As
Publication number | Publication date |
---|---|
US9612584B2 (en) | 2017-04-04 |
JP6048546B2 (ja) | 2016-12-21 |
JPWO2012063800A1 (ja) | 2014-05-12 |
JP6048146B2 (ja) | 2016-12-21 |
JP2015188313A (ja) | 2015-10-29 |
US20130184894A1 (en) | 2013-07-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6048546B2 (ja) | 電力系統制御システム及び方法 | |
Islam et al. | Multiobjective optimization technique for mitigating unbalance and improving voltage considering higher penetration of electric vehicles and distributed generation | |
Jung et al. | Voltage regulation method for voltage drop compensation and unbalance reduction in bipolar low-voltage DC distribution system | |
Rafi et al. | Hierarchical controls selection based on PV penetrations for voltage rise mitigation in a LV distribution network | |
JP5618294B2 (ja) | 高圧・低圧配電系統電圧調節システム | |
WO2019109084A1 (en) | Optimization framework and methods for adaptive ev charging | |
JP5705606B2 (ja) | 電圧上昇抑制装置および分散電源連系システム | |
Karagiannopoulos et al. | A centralised control method for tackling unbalances in active distribution grids | |
Cappelle et al. | Introducing small storage capacity at residential PV installations to prevent overvoltages | |
JP2015167461A (ja) | 太陽光発電システムの制御方法 | |
US10230242B2 (en) | Maximizing energy savings by utilizing conservation voltage reduction with adaptive voltage control and peak demand reduction at point of use | |
Khodayar et al. | Solar photovoltaic generation: Benefits and operation challenges in distribution networks | |
Brandao et al. | Coordinated control of three-and single-phase inverters coexisting in low-voltage microgrids | |
Shahnia et al. | Application of DSTATCOM for surplus power circulation in MV and LV distribution networks with single-phase distributed energy resources | |
Li et al. | Optimal voltage regulation of unbalanced distribution networks with coordination of OLTC and PV generation | |
Levis et al. | Multi-objective optimal active and reactive power dispatch for centrally controlled distributed PV systems | |
JP2013165593A (ja) | 発電制御装置、発電制御方法、発電制御プログラム及び発電制御システム | |
JP2016187285A (ja) | 電力変換装置及び電力管理装置 | |
Pandi et al. | Adaptive coordinated feeder flow control in distribution system with the support of distributed energy resources | |
Islam et al. | Grid power fluctuation reduction by fuzzy control based energy management system in residential microgrids | |
He et al. | A two-layer dynamic voltage regulation strategy for DC distribution networks with distributed energy storages | |
AU2017345388A1 (en) | Maximizing energy savings by utilizing conservation voltage reduction with adaptive voltage control and peak demand reduction at point of use | |
Brandao et al. | Coordinated control of distributed generators in meshed low-voltage microgrids: Power flow control and voltage regulation | |
Lu et al. | Profit optimization-based power compensation control strategy for grid-connected PV system | |
Jaraniya et al. | Integration of multi voltages, multi electric vehicle spots based three phase photovoltaic array charging station to the modern distribution grid with improved electric vehicle charging capability and power quality |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11839365 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13823594 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2012542922 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 11839365 Country of ref document: EP Kind code of ref document: A1 |