JP2008160902A - Power load leveling system and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To introduce a power load leveling system without taking much cost, and to raise consciousness to the power load leveling of a consumer who did not receive discount service until now and was not interested in power load leveling. <P>SOLUTION: The power load leveling system (10) for promoting leveling of used power value includes a management server (14) installed in a management center (12) in order to monitor/record the used power value, a unit (18) for measuring the used power value in every time zone of the entire group consisting of a plurality of consumers (16), and a communication device (24) for reporting the measurements of the power measuring unit to the management server through a communication line (22) wherein the management server calculates the achievement rate of power load leveling from the used power value in every time zone measured by the power measuring unit and reported by the communication device, and calculates the discount rate of power rate depending on the achievement rate of power load leveling. The power measuring unit and the communication device are installed in a power trunk (26) for supplying power to the plurality of consumers. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a power load leveling system and a power load leveling method for reducing the difference between the power usage during the daytime and the power usage during the night to achieve leveling of the power load.

  The amount of electricity used in Japan has been increasing year by year, and the amount of summer daytime usage has increased particularly with the use of air conditioning equipment. Therefore, the power plant will be fully operational during summer daytime to meet peak power demand, but it is often not used except during summer daytime. Thus, maintaining a power plant that is used only temporarily is inefficient and contributes to an increase in power generation costs.

  For this reason, it is important to reduce the power generation cost by reducing the amount of power used during the day and having the amount of power used at night to level the power load. That is, if leveling of the power load during the day and night is achieved, a power plant that is used only for peaking can be made unnecessary, and power generation costs can be reduced.

Therefore, in recent years, a power load leveling system for leveling the power load by applying power storage technology to supplement the nighttime peak power with the surplus power at night has been put into practical use. For example, in the “power load leveling system” of Patent Document 1, the power storage device is charged when the power system is under low load, and the power storage device is discharged when the power system is under high load. Trying to achieve. Currently, such a power load leveling system is being studied on the assumption that it will be applied to large consumers.
JP 2006-50763 A

However, in order to achieve sufficient power load leveling, it is necessary to construct a system that allows consumers including ordinary households to cooperate in power leveling. To do so, install a watt-hour meter that aggregates the amount of power used for each time zone at each customer's home, etc., and calculate the load level by calculating the service and power load leveling rate for discounting the nighttime power usage fee. A discount service depending on the achievement rate is also conceivable, but it is necessary to replace all watt-hour meters in each individual customer's house with devices that can measure the amount of power used in each time zone. There was a problem that was necessary.
In the first place, the conventional invention has not been interested in power load leveling so far, and consumers who have not received a fee discount service have raised awareness about power load leveling, and local customers have cooperated with each other. It did not provide an environment for tackling power load leveling.

  The present invention was devised in view of the current situation, and does not require a lot of cost to introduce the system, and has not received a discount service or the like so far. An object of the present invention is to provide a power load leveling system and a power load leveling method capable of raising awareness of power load leveling.

  In order to solve the above-described problems, the present invention provides a power load leveling system for promoting leveling of power usage during the day and night, and the power load leveling system (10) is connected to the management center (12). A management server (14) for monitoring and recording power usage installed, a power measuring device (18) for measuring power usage by time of the entire group composed of a plurality of consumers (16), And a communication device (24) for reporting a measurement value measured by the power measurement device to a management server through a communication line (22), wherein the management server is measured by the power measurement device and reported by the communication device. A power load leveling system is provided, wherein a power load leveling achievement rate is calculated from a power usage amount for each time zone, and a power rate discount rate is calculated according to the power load leveling achievement rate. .

  Here, it is preferable that the power measuring device (18) and the communication device (24) are installed on a power trunk line (26) that supplies power to a plurality of consumers.

  In addition, a speaker (28) is connected to the communication device (24), and the management server (14) predicts the amount of power used on the day and calculates the current power load leveling rate from the predicted amount of power used. When the calculated power load leveling rate falls below the lower limit of the predetermined power load leveling achievement target, the communication device is notified to that customer from the speaker. It is also preferable to transmit a signal.

  The present invention also relates to a power load leveling method for promoting leveling of power usage during the day and night, wherein a group consisting of a plurality of consumers is created, and the power usage by time zone in the entire group And a reward granting stage for calculating a power load leveling rate achieved from the measured power consumption for each time period and granting a discount on the power charge according to the power load leveling rate of the group A power load leveling method is provided.

  Here, the group is hierarchically divided into a small group, a medium group composed of a plurality of small groups, and a large group composed of a plurality of medium groups, and the power load leveling rate in the reward granting stage It is also preferable that the calculation is performed for each group of each tier, and that a service such as a discount on the electricity charge according to the power load leveling rate of each tier group to which each customer belongs is given cumulatively.

  Further, the meter reading of the electricity meter installed in each consumer can be voluntarily performed by a consumer belonging to a small group and reported to the power company.

According to the power load leveling system and the power load leveling method of the present invention, by managing the power usage of a plurality of customers collectively, it is possible to measure the power usage by time zone at each customer's house. It is not necessary to install a new electricity meter at the same time, and by providing a discount service for electricity charges according to the power load leveling rate achieved by the (small) group as a whole, we have not received discount services etc. Therefore, it is possible to raise awareness of power load leveling as a group of consumers who are not interested in leveling power load.
In addition, when the power load leveling rate is lower than the average of the area where the customer lives, it is possible to give a penalty such as an increase in the electric power charge.

  Here, a (small) group is composed of multiple consumers who receive electricity from a common power trunk line, and power measurement devices and communication devices are installed on the power trunk line, so that the entire group uses power by time of day. The amount can be monitored by the management server at any time with one power measuring device and communication device.

  In addition, the management server calculates the power load leveling rate (forecast) by predicting the power usage amount of the day based on the power usage amount transmitted from the communication device, and that value is a predetermined power load leveling. If the rate achievement target falls below the lower limit of the rate achievement target, the fact that the power load leveling rate is from the speaker connected to the communication device to nearby consumers by transmitting a signal to the communication device, that is, the achievement target By announcing that the value is below the lower limit, the customer can be encouraged to refrain from using current electricity.

  In addition, the groups are organized hierarchically, the power load leveling rate is calculated for each group of each level, and services such as discounts on power charges according to the power load leveling rate of each level group to which each customer belongs are provided. By giving it cumulatively, it is possible to further promote awareness of power load leveling as a group on a larger scale.

In addition, if the customers who belong to the group voluntarily perform meter reading of the electricity meter and report this to, for example, the power company via the Internet, the burden of meter reading work due to patrol by the meter reader can be greatly reduced. it can. By confirming that the usage data sent to the management server from the power meter installed on the main power line matches the total of the meter reading data reported by each customer belonging to the small group Whether the reported meter reading value is correct or not can be confirmed. As a result, costs for power supply can be reduced, and services such as further discounts on power charges can be provided.
Only when the data of the power measuring device and the data reported by the customer do not match, the meter reading is performed by the meter reader.

  First, the power load leveling system of the present invention will be described with reference to the drawings. FIG. 1 is a conceptual diagram showing an entire power load leveling system according to the present invention.

The power load leveling system 10 includes a power measurement device 18 installed on a power trunk line 26, a management server 14 installed in a management center 12 operated by a power company, and a measurement value of the power measurement device 18 as a management server 14 A communication device 24 that transmits data to the communication line 22, a communication line 22 that connects the power measurement device 18 and the management server 14, and a watt hour meter installed in each customer's house (a function for measuring power consumption for each time zone is unnecessary); It is composed of a speaker 28 and the like for sending an announcement to the consumer 16.
Embodiment 1 of the present invention will be described below.

  The power measuring device 18 is installed on a power pole or the like that supports a power trunk line 26 that supplies power to a plurality of consumers 16 (for example, about a household in a neighborhood association), and is an entire group (small group) composed of a plurality of consumers. Measure current power usage.

  The communication device 24 is a device that transmits the power consumption of the entire group measured by the power measurement device 18 to the management server 14 in real time. The communication device 24 also performs a process for receiving a signal from the management server 14 and sending an announcement from a speaker 28 described later.

  The communication line 22 may be anything as long as it connects the power measuring device 18 and the management server 14, but here, a communication line 22 that can be connected to the Internet communication network such as a telephone copper wire or an optical fiber is used. ing.

  The management server 14 is an information processing device that monitors and records the power usage of the entire small group in real time, and executes various application programs for promoting the leveling of the power load of the customer 16. Always connected.

As shown in the block diagram of FIG. 2, the management server 14 includes a customer database and a usage amount database, and also includes a printer (not shown) for printing an invoice.
In the customer database, the customer number (and password), name, address, contact telephone number, mobile phone e-mail address of the customer 16 who cooperates in power load leveling, and the (small) group to which the customer belongs. The customer data such as the group number, the name of the person in charge of the person in charge and the contact information are recorded, and the usage database is measured by the meter of each meter of each customer 16 and the power measuring device 18. (Small) Data on power consumption of the entire group and power usage trends in the area where customers live are recorded.

  The application program includes a customer management program that manages, searches, and extracts customer data in the above customer database, and a usage management that writes data to the usage database and manages, searches, and extracts data. The power of the (small) group for the current day based on the program, the trend of power consumption of the customer 16 in the last few days, the power usage trend of the area where the customer lives, and the weather information (daily temperature) obtained through the Internet A usage forecasting program that predicts usage, a leveling rate forecasting program that monitors the power usage of the entire small group in real time and calculates the power load level (forecast) from the expected power usage on the day, and leveling A usage monitoring program for transmitting a signal for sending an announcement to the communication device 24 when the target is exceeded; Achieving leveling that calculates the amount of usage for the current month from the value of the metering meter for the customer 16 last month and the value of the metering meter for the current month, and creates an invoice that applies a discount according to the calculated actual power load leveling rate There is a rate calculation program.

  The power load leveling method of the present invention using the power load leveling system 10 described above is implemented by the following procedure shown in the flowchart of FIG.

[Preparation stage (S1)]
First, the electric power company recruits (small) groups of customers 16 who can cooperate in power load leveling, and concludes a contract to cooperate with power load leveling with a group of customers who have applied. As for the contents of the contract, when the leveling target set in advance as the price for cooperating with electric power load leveling is achieved, a predetermined discount etc. is given to each user of the group according to the degree of achievement There are items such as the method of calculating the power load leveling achievement rate. The group of consumers 16 is composed of a plurality of consumers who receive electricity supplied from the common power trunk line 26, but all of the consumers 16 who receive electricity supply from the common power trunk line 26 do not necessarily conclude a contract. There is no need to cooperate in power leveling, and it is possible not to join the group if not desired. It is also highly desirable that local governments, such as municipalities, act as flags to work together with local residents to work on power leveling. The management center inputs and stores the customer data in the customer database of the management server.
Next, the power company installs the power measuring device 18, the communication device 24, and the speaker 28 on the power main line 26 that is commonly supplied with power by the customers 16 who have signed a contract. The power measuring device 18 and the like may be installed for each group, that is, for each power main line, and it is not necessary to newly install a watt hour meter for measuring the power usage amount for each time zone in each customer's house.

[Measurement stage (S2)]
The power measuring device 18 measures the power supplied to the (small) group from the installed power trunk line 26, and the power usage measured by the communication device 24 connected to the power measuring device 18 through the communication line 22 is sent to the management server 14. Send data. Transmission of the measured power consumption to the management server 14 may be performed in real time, or may be periodically performed at intervals of about every 15 minutes during the day / one hour at night.

[Leveling rate calculation stage (S3)]
The management server 14 that has received the power usage data from the power measuring device 18 executes the consumer management program and the usage management program on the data, thereby the power usage for each (small) group time zone. To the usage database.
Further, the management server 14 executes the usage amount prediction program, and the recent power usage trend of the (small) group (for example, the average of power usage over the last three days) and the customer 16 reside from the usage amount database. Estimate the power consumption of the entire (small) group on the current day based on local seasonal power usage trends and weather information obtained via the Internet, and actually measure and estimate the power usage by executing the leveling rate forecasting program. The predicted value of the power load leveling rate is calculated from the used power consumption.
The power load leveling rate is the percentage of the minimum amount of power in the middle of the night divided by the maximum amount of power during the day.

[Use amount monitoring stage (S4)]
The management server 14 also announces to the communication device 24 via the communication line 22 when the predicted value of the power load leveling rate calculated in the leveling rate calculating step is below the lower limit value of the predetermined leveling target value. The communication device 24 notifies the customer 16 who is a group member living in the vicinity thereof from the speaker 28 provided therewith.

[Reward Grant Stage (S5)]
Further, the management server 14 executes the achievement leveling rate calculation program, so that the current month is calculated from the value of the meter of the previous month and the value of the meter of the current month of each customer 16 read by the meter reader and input to the usage amount database. In addition, the power load leveling rate for the entire month of the (small) group is calculated and an invoice is applied with a discount corresponding to this.

According to the power load leveling method using the power load leveling system 10 of the present embodiment described above, a consumer who has not received a discount service or the like and has not been interested in power load leveling, for example, The environment for local residents to work on power leveling has been improved by using the flags of local governments such as municipalities, etc., and a discount service for power charges according to the power load leveling rate of the (small) group as a whole By giving it to the house, it is possible to raise awareness of power load leveling. In addition, since the power usage of multiple customers is managed as a (small) group, there is no need to install a new watt-hour meter to measure the power usage by time of day in each individual customer's house. Cost can be reduced.
Furthermore, the management center can grasp the power load leveling rate (expected value) as a group in real time, and if the power load leveling rate falls below the predetermined lower limit of the leveling target value, it will immediately It is expected that the customer who heard the announcement will make an effort to reduce the electric power load.

  Since the present embodiment is a power load leveling method implemented using the same system as in the first embodiment, a conceptual diagram of the system and a flow diagram of the power load leveling method are omitted, but in the customer database of the management server 14 The customer 16 is hierarchically divided into a small group, a medium group composed of a plurality of small groups, and a large group composed of a plurality of medium groups. As described above, the small group is composed of a neighborhood association that receives power from the common power main line 26, the middle group is composed of a plurality of small groups that receive power from a common substation, and the large group is a municipality. It consists of multiple medium groups.

  The present embodiment is implemented by almost the same steps as in the first embodiment. However, in the reward granting stage, the management server 14 executes the achievement leveling rate calculation program, so that it can be further calculated during the month of the current month based on the actual measurement values. It also calculates the power load leveling rate for groups and large groups. In accordance with the calculated power load leveling ratio of the medium group and large group, the management center 12 provides a service such as a discount for a public street light to a large group such as a municipality, for example, a souvenir for a middle group such as a neighborhood association. Process to provide.

  According to the present embodiment, by providing services to small groups, medium groups, and large groups cumulatively, an environment in which local governments, etc., act as flagships and tackle power load leveling on a relatively large scale such as municipalities. Provided.

  The present embodiment is a power load leveling method implemented using the same system as in the first embodiment. However, in addition to promoting power load leveling in the present embodiment, it is also aimed to reduce the burden of reading work (meter reading work) of the watt-hour meter installed in each customer's house due to patrol of the meter reader.

In this embodiment, each consumer 16 reads the value of a watt-hour meter installed at home (no need to measure power consumption for each time period), and sends the value to the management server 14 via the Internet for reporting. Then, the management server 14 that has received the report includes [Self-metering step (S6)] for confirming the authenticity of the reported value in the previous step of the above [Reward granting step] (see the flowchart of FIG. 4). reference).
The management server 14 further stores a usage amount comparison program for determining the validity of the reported meter reading value in addition to the application program described in the first embodiment.

To explain in more detail, once a month, the customer 16 who has read the value of the watt-hour meter at home on a predetermined date (for example, the end of the month) can read the meter reading value homepage prepared by the power company. Access is performed using its own terminal (a personal computer or a mobile phone having an Internet connection function), and login is performed using an ID (customer 16 number) and a predetermined password. Then, the meter reading is input to the entry column provided on the page, and the meter reading is reported to the management center 12 by pressing the transmission button.
The management server 14 identifies the customer 16 from the ID and password, receives a report of the meter reading value, and determines whether or not the reported numerical value is appropriate by executing the usage amount comparison program. The usage amount comparison program calculates the total power usage amount for the current month calculated from the numerical values reported from all the customers 16 constituting the (small) group, and the power usage amount for the current month measured by the power measuring device 18. Are compared to determine (approximately) whether they match.
If the compared values do not match, the management server 14 sends an e-mail to that effect to the meter reader's mobile phone to instruct meter reading. As a result of the meter reading by the meter reader, if the reported numerical value is found to be incorrect, the meter reader registers the correct numerical value in the management server 14 and gives instructions to the customer 16.
When the compared values match and when the mistake is corrected by the meter reader, the management server 14 proceeds to the step of the above-mentioned reward granting stage.
For confirmation, the watt-hour meter installed in each customer's house is read about once every six months or once a year.

  According to the present embodiment described above, the burden of the meter reading work due to the patrol of the meter reader can be greatly reduced by allowing the customer himself to perform the meter reading work after ensuring the credibility of the report. Since the electric power company can reduce the cost for power supply, it is possible to provide services such as further discounts on power charges.

  It should be noted that the configuration of the present invention is not limited to that described above, and can be appropriately changed without departing from the spirit of the invention. In addition, instead of attaching a power measuring device to the power trunk line, attach a power measuring device to each customer's house, calculate the power load leveling rate of each home, and the power load leveling rate will be the lower limit of the target value. It is also possible to give a warning when it falls below, or to provide services such as discounts on power charges according to the achievement rate of power load leveling.

1 is a conceptual diagram illustrating an entire power load leveling system according to the present invention. It is the block diagram which showed the structure of the management server. It is a flowchart of the electric power load leveling method of Example 1. It is a flowchart of the electric power load leveling method of Example 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Electric power load leveling system 12 Management center 14 Management server 16 Consumer 18 Power measuring device 22 Communication line 24 Communication device 26 Power trunk line 28 Speaker

Claims (6)

A power load leveling system for facilitating leveling of power usage during the day and night,
The power load leveling system (10) includes a management server (14) that is installed in the management center (12) and monitors and records the amount of power used, and a group-wide time composed of a plurality of consumers (16). A power measuring device (18) for measuring power usage by band, and a communication device (24) for reporting a measured value measured by the power measuring device to a management server through a communication line (22),
The management server calculates a power load leveling achievement rate from the power usage by time period measured by the power measuring device and reported by the communication device, and discounts of power charges according to the power load leveling achievement rate A power load leveling system characterized by calculating a rate.   The power load leveling according to claim 1, wherein the power measuring device (18) and the communication device (24) are installed on a power trunk line (26) for supplying power to a plurality of consumers. system. A speaker (28) is connected to the communication device (24),
The management server (14) predicts the power usage of the day, calculates the current power load leveling rate from the predicted power usage, and the calculated power load leveling rate achieves a predetermined power load leveling. 3. The power load according to claim 1, wherein when the value falls below a lower limit value of the target, a signal for announcing that is transmitted from the speaker to the corresponding consumer to the communication device. Leveling system. A power load leveling method for facilitating leveling of power usage during the day and night,
A measurement stage for creating a group consisting of a plurality of consumers and measuring power consumption by time period in the entire group,
A reward granting stage for calculating a power load leveling rate achieved from the measured power consumption for each time zone and granting a discount on a power rate according to the power load leveling rate of the group. Power load leveling method. The groups are hierarchically grouped as small groups, medium groups composed of a plurality of small groups, and large groups composed of a plurality of medium groups.
The calculation of the power load leveling rate in the reward granting stage is performed for each group of each tier, and services such as discounting of the electric charge according to the power load leveling rate of each tier group to which each consumer belongs The power load leveling method according to claim 4, wherein the power load leveling method is applied cumulatively.   6. The power load leveling method according to claim 5, wherein the meter reading of the electricity meter installed in each consumer is voluntarily performed by a consumer belonging to a small group and reported to the power company.

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