JP5955581B2 - Electric power supply and demand control device and electric power supply and demand control method - Google Patents

Description

  Embodiments described herein relate generally to a power supply / demand control apparatus that performs power supply / demand control based on a load restriction command from a power supply command station.

  One of the countermeasures against power shortages is the introduction of a demand response method that forcibly reduces the amount of power supply. The current power load limitation is dealt with by stopping power transmission at each distribution substation based on a command from the power supply control station. In this method, a power failure occurs in the entire specific area, so that the unfairness of consumers in the power outage target area increases and the convenience is significantly reduced. In order to reduce the loss of convenience for customers due to supply cuts, an energy management system (EMS: Energy Management System) that performs detailed control of the commands issued by the central power supply command station is usually used. By interposing between them, it is necessary to have a mechanism for exchanging information for achieving the purpose.

  As a conventional technique related to the present embodiment, a method of performing demand control in a power distribution network at the time of load limitation has been proposed (for example, see Patent Document 1). Further, a method has been proposed in which a consumer individually controls each device when power is limited (see, for example, Patent Document 2).

JP 2011-62075 A JP 2008-289276 A

  As described above, many methods related to demand control when power supply is tight have been proposed. However, in actual operation, calculation of supply distribution considering the convenience of consumers is an important factor, but since demands and power consumption patterns of consumers differ, power supply control that incorporates this perspective It is difficult to realize a system that integrates EMS, EMS, and customers.

  An object of the present embodiment is to provide a power supply and demand control apparatus that can reduce loss of convenience for consumers when power is tight.

The power supply / demand control apparatus according to the present embodiment is a power supply / demand control apparatus provided between a power supply command center and a consumer, and is important for power usage equipment under conditions where the consumer is tight in power consumption. A customer information collection unit that collects report information that has been reported in advance, a customer importance database that stores report information collected by the customer information collection unit, and information on the contract amperage of each customer It has a contract information database and a power usage characteristic database for each device that stores information indicating the characteristics of each device's usage pattern, including the time of use, frequency of use, or temperature setting conditions for each device. Based on the stored information, a demand amount calculation unit that calculates a demand amount that sums up the power consumption when the use is suppressed for the electrical equipment up to a certain importance level, The supply amount based on the load restriction command from the power supply command station is calculated, and the supply and demand balance is calculated based on the demand amount calculated by the demand amount calculation unit and the supply amount based on the load restriction command from the power supply command station. If the demand amount exceeds the supply amount, the demand amount is the sum of the power consumption when the use is suppressed for the electrical equipment up to the importance level higher than the importance level used for calculating the demand amount. The supply amount calculation unit that causes the demand amount calculation unit to repeatedly perform the process of calculating the supply amount until the supply amount exceeds the demand amount, and the supply amount calculated by the supply amount calculation unit is calculated by the demand amount calculation unit And a supply command unit that transmits information indicating that the electrical equipment up to the importance used for calculating the demand amount can be used to the consumer when the demand amount exceeds the demand amount .

The power supply and demand control method according to the present embodiment is a method used in a power supply and demand control device provided between a power supply command center and a consumer, and the consumer is under a condition where power consumption is tight. Customer information collection step for collecting report information previously reported for the importance of power-using equipment, a customer importance database for storing the report information collected in the customer information collection step, and the contract amperage of each customer And a contract information database for storing information on the device, and a power usage feature database for each device for storing information indicating the characteristics of the usage pattern for each device, including the usage time zone, usage frequency, or temperature setting condition of each device, Based on the information stored in each of these databases, the total demand for power consumption when the use of electrical equipment up to a certain level is suppressed A demand amount calculating step for calculating the supply amount, a supply amount based on a load restriction command from the power supply command station, and a demand amount calculated in the demand amount calculation step and a load limit command from the power supply command station When the supply and demand balance is determined based on the supply volume, and when the demand volume exceeds the supply volume, the use is suppressed for electrical equipment that has a higher importance level than the importance level used to calculate the demand volume. The supply amount calculation step for repeatedly calculating the demand amount by summing up the power consumption amount in the demand amount calculation step until the supply amount exceeds the demand amount, and the supply amount calculation step. When the supply volume exceeds the demand volume calculated in the demand volume calculation step, information indicating that the electrical equipment up to the importance level used for calculating the demand volume can be used is And a supply command step of transmitting toward the house.

The figure which shows the structure of the electric power supply-and-demand control apparatus which concerns on 1st Embodiment. The figure which shows the detail of the consumer information collection part and demand amount calculation part which concern on 1st Embodiment. The figure which shows the detail of the supply amount calculation part which concerns on 1st Embodiment. The figure which shows the structure of the electric power supply-and-demand control apparatus which concerns on 2nd Embodiment. The figure which shows the detail of the notification signal transmission part which concerns on 2nd Embodiment. The figure which shows the structure of the electric power supply-and-demand control apparatus which concerns on 3rd Embodiment. The figure which shows the detail of the supply amount calculation part which concerns on 3rd Embodiment. The figure which shows the detail of the supply amount calculation part which concerns on 4th Embodiment.

  The power supply / demand control apparatus according to this embodiment will be described below with reference to the drawings.

(First embodiment)
FIG. 1 is a configuration diagram of a power supply and demand control apparatus according to the first embodiment. Conventionally, when a load restriction command is issued from a power supply command station, the power supply control station has coped with a specified power outage (for example, area A in FIG. 1) by a planned power outage. This gave an unfair feeling that consumers in specific areas lost convenience due to power outages. Therefore, in order to avoid planned power outages and alleviate unfairness, in the first embodiment, an electric power supply and demand control device is interposed between the power supply command station and the customer, and the power supply and demand control device is connected to the power supply command station. According to the load restriction command, power is supplied under conditions that do not impair the convenience of the consumer.

  In FIG. 1, the power supply and demand control device includes a customer information collection unit 1 that collects report information related to the power usage status of a consumer in advance, and a customer's information based on the report information collected by the customer information collection unit 1. Demand balance is determined based on the demand amount calculation unit 2 that calculates the total amount of power consumption and the demand amount calculated by the demand amount calculation unit 2 and the supply amount based on the load restriction command from the power supply command station The supply amount calculation unit 3 calculates the supply amount to be distributed to each consumer, and the supply command unit 4 issues a supply command to each consumer based on the supply amount calculated by the supply amount calculation unit 3.

  FIG. 2 is a diagram showing details of the customer information collection unit 1 and the demand amount calculation unit 2. The demand amount calculation unit 2 includes a consumer importance DB 21, a contract information DB 22, a device-specific power usage feature DB 23, and a device-specific total demand curve calculation unit 24.

  The consumer information collection unit 1 reports the information on the use of power from each of the consumers H1 to Hm via the interface, that is, the importance of the power usage equipment under the condition that each consumer has a tight power consumption. Information previously reported is collected and stored in the consumer importance DB 21. For example, it is assumed that the consumer H1 has the highest importance of “lighting”, and then sets “refrigeration equipment” and “air conditioning” in this order. Here, as an example, the case where each consumer declares home appliances of importance 1 to importance 3 is shown, but it is specified in general power equipment such as large equipment used in stores, factories, medical institutions, public institutions, etc. Is possible. One or more importance levels can be set as desired. When there is no prior declaration, importance can be automatically allocated as a default value. The importance level can be changed for each season or day of the week.

  The demand amount calculation unit 2 includes report information collected by the customer information collection unit 1 stored in the customer importance DB 21, contract amperage information of each customer stored in the contract information DB 22, and power for each device. Based on the information about the characteristics of the usage pattern for each device, such as the typical usage time zone, usage frequency, and temperature setting conditions, stored in the usage feature DB 23, the total demand curve calculation unit 24 for each device uses the consumers in the entire region. The total demand curve for each device indicating the time transition of the total demand for each device having a high degree of importance is calculated. In this example, it is assumed that the device-specific total demand curve calculation unit 24 calculates a device-specific total demand curve when use is suppressed for devices up to importance level 3. The consumer importance DB 21 also includes information related to specific important devices such as specific medical devices related to life support, and it is possible to secure specific demand. Since the consumer's power consumption is calculated as a total with this mechanism, the only personal information handled is information on the number of contracted amperes and the importance of the power-using equipment, so personal information is collected unnecessarily. It becomes a highly safe system.

  As for information on the power usage status of consumers, information on the power consumption information of individual devices and information on usage hours are obtained by reporting from each customer, or used for feedback to improve accuracy. It is also possible.

  FIG. 3 shows details of the supply amount calculation unit 3. The supply amount calculation unit 3 includes a total supply curve calculation unit 25 and a supply and demand balance determination unit 26. The total supply curve calculation unit 25 includes an in-region supply history DB 25A and a total supply curve determination unit 25B. The total supply curve calculation unit 25 calculates a total supply curve indicating the temporal transition of the total supplyable amount in the area according to the load restriction command from the power supply command station. Here, based on the regional supply history DB 25A that stores information on supply curves for the past seasons, weekdays, holidays, and specific days, total supply that reduces the peak demand in the region according to the load limit amount The curve is determined by the total supply curve determination unit 25B.

  The supply-demand balance determination unit 26 is a total supply curve calculated by the total supply curve calculation unit 25 and a device-specific total when the use is suppressed for devices up to the importance level 3 calculated by the device-specific total demand curve calculation unit 24. Based on the demand curve, it is determined whether or not there is a time zone in which the demand exceeds the supply. When the supply always exceeds the demand, the supply command unit 4 transmits a power supply command indicating that the equipment up to the importance level 3 can be used to each consumer.

  On the other hand, when a time period in which the demand exceeds the supply occurs, the device-specific total demand curve calculation unit 24 calculates the device-specific total demand curve in accordance with the review of the importance again. For example, FIG. 3 shows an example in which the total demand is suppressed and the demand falls within the supply range as a result of suppressing the use of the devices up to importance level 2. In this case, the supply command unit 4 transmits a power supply command indicating that devices up to importance level 2 can be used to each consumer. It is also possible to automatically turn on / off each device based on the report information of the customer. In addition, it is possible to automatically collect information on the power usage status of consumers and devices used by using a smart meter or the like and turn on / off based on the obtained information.

  As described above, in the first embodiment, based on the prior declaration data and the action pattern regarding the power consumption of each customer in accordance with the load restriction command from the power supply control station, the demand of the customer within the range of the supplyable amount. The maximum amount that meets the requirements is determined for each customer, and supply control is performed. In this way, it is possible to alleviate the unfair feeling that only a specific area will have a complete power outage and to ensure the use of equipment that is highly important to each consumer even during power tightness. Loss can be reduced.

  The present embodiment can be developed as a risk avoidance means when power supply is insufficient in an emerging country where the power infrastructure expected in the future is insufficient in addition to the use at the time of a planned power outage.

(Second Embodiment)
In the first embodiment, the power supply and demand control device determines the supply and demand balance according to the importance degree that the customer has previously reported in accordance with the load restriction command from the power supply control station, and suppresses the use of the equipment. By using the method of the first embodiment, based on the information on the supply-demand balance predicted in advance, the supply power of the customer is notified in advance to the customer on the previous day, the day, or just before the implementation. It is conceivable that efforts to reduce consumption can avoid the load limit command and increase the convenience for consumers.

  FIG. 4 is a configuration diagram of the power supply and demand control apparatus according to the second embodiment. This 2nd Embodiment has the notification signal transmission part 5 instead of the supply command part 4 of the said 1st Embodiment, and the demand amount calculation part 2 and the supply amount calculation part 3 have a function required for notification signal transmission. It is to be prepared. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 5 shows details of the notification signal transmission unit 5. The notification signal transmission unit 5 includes a supply and demand balance calculation history storage unit 31 and a transmission announcement selection unit 32. In the example of FIG. 5, when the use of equipment is not suppressed, the demand exceeds the supply in almost all time of the day, and when the equipment with the importance level 3 or higher is used, the demand is supplied between 18:00 and 21:00. It is assumed that the demand is lower than the supply throughout the day in the case of using the equipment with the importance of 2 or more.

  In this case, the trial calculation information on the relationship between demand and supply examined by the supply / demand balance determination unit 26 is accumulated in the supply / demand balance calculation history storage unit 31. The outgoing announcement selection unit 32 selects an appropriate announcement from the relationship between supply and demand for the previous day or the immediately preceding notification in a time zone in which demand exceeds supply. In this example, an announcement such as “Notice that we will supply at level 2 from 18:00 to 21:00 tomorrow. Please refrain from using less than 2 importance devices.” Be notified.

(Third embodiment)
It is also predicted that the power consumption reduction amount will increase due to the supply restriction notice shown in the second embodiment. In addition, depending on the region, there will be regions where power can be supplied from within the region by installing distributed power sources such as solar power generation, wind power generation, and fuel cells, and power storage facilities that store the generated power. There is a possibility. Therefore, in the first embodiment, when the use of the device is suppressed according to the importance level and the power from the distributed power supply or storage battery in the region is supplied, the supply in the region is expected to exceed the demand. It is conceivable that there is an effect of stabilizing the supply of the entire power network by notifying the power supply command center and redistributing the power to other power tight areas.

  FIG. 6 is a configuration diagram of a power supply and demand control apparatus according to the third embodiment. The supply amount calculation unit 3 has a function necessary for notification to the power supply command station. The customer information collection unit 1, the demand amount calculation unit 2, and the supply command unit 4 are common to the first embodiment, and the advance notification signal transmission unit 5 is common to the second embodiment. In FIG. 6, the same parts as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 7 shows details of the supply amount calculation unit 3 according to the third embodiment. The total supply curve calculation unit 25 includes an in-region generated power generation amount transmission unit 41, an in-region supply history DB 25A, and a total supply curve determination unit 25B. The total supply curve calculation unit 25, when calculating the time transition of the total available supply amount in the area according to the load restriction command from the power supply command station, information on the power generation amount supplied from the distributed power supply or storage battery in the area The total supply curve based on the information from the region-generated power generation amount transmission unit 41 that collects and transmits the information and the information from the region supply history DB 25A is determined by the total supply curve determination unit 25B.

  The supply-demand balance determination unit 26 includes the total supply curve calculated by the total supply curve calculation unit 25B and the total demand curve for each device by importance (for example, up to importance 3) calculated by the total demand curve calculation unit 24 for each device. Based on the above, it is determined whether or not there is a time zone in which the demand exceeds the supply. When the supply always exceeds the demand, as in the case of the first embodiment or the second embodiment, the equipment from the supply command unit 4 or the notification signal generation unit 5 to the importance level 3 can be used. A power supply command or notification signal is transmitted to each consumer. When the supply always exceeds the demand, a signal indicating that the supply is sufficient for the load restriction command is transmitted from the supply / demand balance determination unit 26 to the power supply command station. FIG. 7 shows an example in which supply is surplus with respect to demand as a result of suppressing the use of equipment up to importance level 3 in consideration of supply of power generation in the region.

(Fourth embodiment)
In the fourth embodiment, the purpose is to redistribute power to other power tight zones by supplying power from within the region. From the viewpoint of improving convenience in the region, supplying power from within the region. It is possible to increase the importance in the region and ease the restraint on the use of equipment in accordance with the increase in

  FIG. 8 shows details of the supply amount calculation unit 3 according to the fourth embodiment. Based on the total supply curve calculated by the total supply curve calculation unit 25, the supply and demand balance determination unit 26 can use only devices of importance 1 before securing additional power generation, but is added within the region. As a result of securing the amount of power generation, an example in which equipment up to importance level 2 can be used is shown. As in the case of the third embodiment, the result is that a power supply command or notification signal indicating that the equipment from the supply command unit 4 or the notification signal to the importance level 2 can be used is transmitted to each consumer. The

  Although several embodiments have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Consumer information collection part, 2 ... Demand amount calculation part, 3 ... Supply amount calculation part, 4 ... Supply command part, 21 ... Consumer importance DB, 22 ... Contract information DB, 23 ... Electric power use characteristic DB classified by apparatus 24 ... Total demand curve calculation unit for each device, 25 ... Total supply curve calculation unit, 25A ... Regional supply history DB, 25B ... Total supply curve determination unit, 26 ... Supply / demand balance determination unit, 5 ... Notification signal transmission unit, 31 ... Supply-demand balance calculation history storage unit, 32 ... Transmission announcement selection unit, 41 ... Locally generated power generation amount transmission unit.

Claims (8)

A power supply and demand control device provided between a power supply command center and a customer,
A consumer information collection unit that collects report information that is reported in advance on the importance of power-using equipment under conditions where power consumption is tight;
The consumer importance database for storing the reporting information collected by the consumer information collection unit, the contract information database for storing information on the contract amperage of each customer, and the usage time zone, usage frequency, or temperature of each device. It has a power usage feature database for each device that stores information indicating the characteristics of usage patterns for each device, including setting conditions, and is used for electrical devices that have a certain level of importance based on the information stored in each of these databases. A demand amount calculation unit that calculates a demand amount that is a sum of power consumption when
The supply amount based on the load restriction command from the power supply command station is calculated, and a supply-demand balance is determined based on the demand amount calculated by the demand amount calculation unit and the supply amount, and the demand amount is the supply amount. The supply amount is calculated by calculating the demand amount by summing the power consumption when the use is suppressed for the electric equipment up to the importance level higher than the importance level used for calculating the demand amount. A supply amount calculation unit that causes the demand amount calculation unit to repeatedly perform until the demand amount is exceeded;
When the supply amount calculated by the supply amount calculation unit is greater than the demand amount calculated by the demand amount calculation unit, it is possible to use the electrical equipment up to the importance used for calculating the demand amount. A power supply and demand control device comprising: a supply command unit that transmits information to the consumer.   The electric power supply and demand control apparatus according to claim 1, further comprising a notification signal transmission unit for notifying the consumer of supply restriction based on the supply and demand balance calculated in advance by the supply amount calculation unit.   The supply amount calculation unit, when the total amount of the supply amount based on the load restriction command from the power supply command station and the power generation amount generated by the consumer exceeds the demand amount, The power supply / demand control apparatus according to claim 1, further comprising a signal for notifying that effect.   The supply amount calculation unit determines the supply and demand balance based on a total amount of a supply amount based on a load restriction command from the power supply command station and a power generation amount generated by the consumer. Item 2. The power supply / demand control apparatus according to Item 1. A method used in a power supply and demand control device provided between a power supply command center and a customer,
A customer information collecting step for collecting report information that is reported in advance about the importance of the power-using device under a condition in which the consumer consumes power;
The consumer importance database that stores the reporting information collected in the consumer information collection step, the contract information database that stores information on the contract amperage of each customer, and the usage time zone, usage frequency, or temperature of each device It has a power usage feature database for each device that stores information indicating the characteristics of usage patterns for each device, including setting conditions, and is used for electrical devices that have a certain level of importance based on the information stored in each of these databases. A demand amount calculating step for calculating a total amount of power consumption when the power consumption is suppressed,
The supply amount based on the load restriction command from the power supply command station is calculated, and a supply-demand balance is determined based on the demand amount calculated in the demand amount calculation step and the supply amount, and the demand amount is the supply amount. The supply amount is calculated by calculating the demand amount by summing the power consumption when the use is suppressed for the electric equipment up to the importance level higher than the importance level used for calculating the demand amount. A supply amount calculation step that is repeatedly performed in the demand amount calculation step until the demand amount is exceeded;
When the supply amount calculated in the supply amount calculation step exceeds the demand amount calculated in the demand amount calculation step, it is possible to use the electrical equipment up to the importance used for calculating the demand amount. A power supply / demand control method comprising: a supply command step for transmitting information to the consumer.   6. The power supply and demand control method according to claim 5, further comprising a notification signal transmission step for notifying the consumer of a supply restriction based on the supply and demand balance calculated in advance in the supply amount calculation step.   In the supply amount calculation step, when the total amount of the supply amount based on the load restriction command from the power supply command station and the power generation amount generated by the consumer exceeds the demand amount, the supply command station 6. The power supply and demand control method according to claim 5, further comprising transmitting a signal to that effect.   The supply amount calculation step determines the supply and demand balance based on a total amount of a supply amount based on a load restriction command from the power supply command station and a power generation amount generated by the consumer. Item 6. The power supply and demand control method according to Item 5.

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