Patent Application
20140358470
This application claims priority under 35 U.S.C. §119 to Japanese Patent Application No. 2013-111577, filed on May 28, 2013, the entire content of which being hereby incorporated herein by reference.
The present invention relates to an evaluating device for evaluating the degree of degradation experienced by a customer during previous power conservation periods, and a power conservation planning device for selecting a customer to be subject to power conservation using the evaluating device.
A demand controlling device for performing reliable demand control while ascertaining the effect on occupants and tenants through controlling facilities and equipment after performing highly accurate and rapid demand (electric power consumption) forecasting, evaluation of facilities and equipment to be subject to demand control based on the demand forecasting, and notification of the occupants or tenants of regarding the detail of the control of the facilities and equipment has been proposed. See, for example, Japanese Unexamined Patent Application Publication 2011-193639 (“the JP '639”).
Moreover, there has been a proposal for an electric power demand controlling device for storing, for each customer, a sensitivity that indicates the probability that the customer will agree to a request for electric power conservation, wherein, if the forecasted electric power demand exceeds a target value that is set in advance, a customer for performing demand regulation is selected based on the sensitivities. See, for example, Japanese Unexamined Patent Application Publication 2011-254582 (“the JP '582”).
In order for an aggregator company that handles a plurality of customer to secure power for handling tight electric power supply (demand regulation reserve power), it is necessary to make it easy to obtain the cooperation of the customers in cutting back electric energy use. However, with the technologies disclosed in the JP '639 and the JP '532, the notification of the customer regarding the detail of demand control for facilities and equipment (cessation or modification of operation), and the selection of customers for performing regulation of demand were achieved, but no means for making it easier to obtain cooperation from the customer in energy conservation were produced.
The present invention was created in order to solve the problem set forth above, and an aspect thereof is to achieve means for facilitating garnering cooperation of customers through evaluating the degree of degradation experienced by the customers in electric power conservation periods in the past.
An evaluating device according to the present disclosure includes: an environment information controlling portion that obtains, for each individual customer, environment information during an electric power conservation period for customers who have performed electric power conservation measures; an environment information storing portion that stores environment information obtained from the environment information controlling portion; and an environment evaluating portion that calculates, for each individual customer, an environmental degradation level indicating the level of degradation experienced by the customer during previous electric power conservation periods, based on environment information stored in the environment information storing portion.
The evaluating device according to the present disclosure is the first structural example, wherein: the environment evaluating portion includes: an environment evaluation index value deriving portion that calculates an environment evaluation index value for evaluating the environment of the customer from the environment information; and environmental degradation level calculating portion that evaluates whether or not the environment evaluation index value is outside of an acceptable range, and that calculates an environmental degradation level based on the evaluation result.
Moreover, the evaluating device according to the present disclosure is the first structural example, wherein: the environmental degradation level calculating portion calculates, as the environmental degradation level, the time over which the environment evaluation index value is outside of the acceptable range extends, within the electric power conservation period, or calculate, as the environmental degradation level, an integral value of the environment evaluation index value that is outside of the acceptable range during the electric power conservation period.
Moreover, the electric power conservation planning device according to the present disclosure includes: an evaluating device as set forth in any one of the above structural examples; and a customer selecting portion that selects candidate customers, to be subject to electric power conservation, in ascending order starting with the customer for which the environmental degradation level calculated by the evaluating device is smallest.
Moreover, the electric power conservation planning device according to the present disclosure is the first structural example including: a conserved energy information storing portion that stores, for each customer, information regarding the amount of energy conserved in an electric power conservation period that has been performed, for customers who have executed electric power conservation measures in the past, wherein: the customer selecting portion selects candidate customers sequentially starting with the customers for which the environmental degradation levels calculated by the evaluating device are the smallest, calculate, from information stored in the conserved energy information storing portion, the total energy conservation amount for all of the selected candidate customers, and repeats selection of candidate customers until the total conserved energy amount is no less than a target energy conservation amount.
Moreover, the electric power conservation planning device according to the present disclosure is the first structural example further including: an electric power conservation requesting portion that requests, from the candidate customers selected by the customer selecting portion, electric conservation; and a request response controlling portion that cases the customer selecting portion to select an additional candidate customer when there is a candidate customer that refuses the request for energy conservation.
Moreover, an evaluating method, includes: an environment information obtaining step for obtaining, for each individual customer, environment information during an electric power conservation period for customers who have performed electric power conservation measures; an environment evaluating step for calculating, for each individual customer, an environmental degradation level indicating the level of degradation experienced by the customer during previous electric power conservation periods, based on environment information stored in the environment information obtaining step.
Given the present invention, for customers that have performed electric power conservation measures, environment information from during electric power conservation periods is obtained for each customer, and, based on that environment information, the environmental degradation is calculated for each customer, to enable an evaluation of the degree of degradation experienced by customers in electric power conservation periods in the past. Following this, if the result of this evaluation is reflected into electric power conservation plans, this can be expected to facilitate garnering of the cooperation of the customers.
Moreover, in the present disclosure, selecting candidate customers to be subject to electric power conservation sequentially beginning with the customers wherein the environmental degradation, calculated by the evaluating portion, is the least, makes it possible to make it unlikely for a customer that has experienced great environmental degradation to be selected to be subject to electric power conservation thereafter.
When reducing demand for electric power in order to balance supply and demand, there is a high probability of this leading to inconvenience or damage to the environment within buildings, such as an increase in the dissatisfaction of the customer or a reduction in productivity, through the deterioration of the occupied environment on the customer side (hereinafter termed “environmental degradation”). Given this, the present inventors focused on the fact that even in the case when energy conservation measures that, at first glance, appear to be fair, such as uniformly setting the temperature, when cooling, to 28° C. is applied, a situation is produced within actual buildings that cannot be considered fair due to the effects on comfort within the building (such as the comfort index, PMV, or the like) of conditions that each vary depending on, for example, the performance level of the building insulation, the area of openings, the orientation, internal heat producing factors (facilities and equipment, occupants), and the like. Moreover, the customers in office buildings that are occupied exclusively by employees of the company and customers such as with shops and stores and hotels, and the like, that seek to provide high-quality environments to their customers, will have different degrees in the effects of this on business.
That is, when energy reduction policies are put in place in a customer building, then the degree of degradation that can be allowed in the environment will differ greatly depending on the characteristics of the individual buildings, the surrounding environment, the nature of the business, and so forth. As a result, it will be difficult to obtain cooperation for energy reduction from customers wherein the environmental degradation tolerance level has been exceeded, and thus the inventors arrived to the idea that it is possible to improve cooperative sentiments if an evaluation result of the comfort of the customer environment, or the like, is used as an index for determining energy reduction measures in a manner that is more convincing for the customer.
Forms for carrying out the present disclosure will be explained below in reference to the figures. In the present example, the degree of environmental degradation experienced by the individual customer during an electric power conservation period (for example, during a demand response), which is a period wherein electric power conservation countermeasures are executed (where the degree of degradation is for example, the cumulative time over which discomfort has continued, or the degree of discomfort, a time ratio of discomfort, or the like) is evaluated, and the greater the environmental degradation, the less likely that customer is to be selected as subject to electric power conservation thereafter.
The operation of the electric power conservation planning device 1 according to the present example will be explained next using
The environmental degradation ranking determining portion 5 compares the degrees of environmental degradation calculated by the environmental degradation evaluating device 2, to rank order the customers (Step S2 in
Next, the conserved energy information storing portion 3, for the customers who have executed electric power conservation measures in the past, stores, for each individual customer, information on the amount of energy conservation (amount of energy conserved) that has been performed during the energy conservation periods.
The customer selecting portion 6 selects a candidate customer to be subjected to energy conservation, based on the conserved energy information stored in the conserved energy information storing portion 3 and the rankings for the individual customers, determined by the environmental degradation level ranking determining portion 5 (Step S3 in
The electric power conservation requesting portion 7 requests electric power conservation for the candidate customers selected by the customer selecting portion 6 (Step S4 in
Following this, the request response controlling portion 8 receives responses from the candidate customers who have been requested to conserve electric power, and stores information as to whether or not the candidate customers have consented to the requests (Step S5 in
If there is a candidate customer who refuses the request for the electric power conservation (YES in Step S6 in
The customer selecting portion 6, having received the notification from the request response controlling portion 8 returns to Step S3, to select an additional candidate customer. At this time, the customer selecting portion 6 selects an additional candidate customer from among all of the customers, excluding the candidate customers that have already been selected, in sequence beginning with the customers for which the environmental degradation level is small, based on the rank ordering of the individual customers, determined by the environmental degradation level ranking determining portion 5, and on the conserved energy information stored in the conserved energy information storing portion 3 (Step S30 in
The electric power conservation requesting portion 7 requests electric power conservation for an additional candidate customers selected by the customer selecting portion 6 (Step S4 in
Following this, the request response controlling portion 8 receives responses from the additional candidate customers who have been requested to conserve electric power, and stores information as to whether or not the additional candidate customers have consented to the requests (Step S5 in
In this way, the processes of Step S3 through S7 are repeated until there is no candidate customer who has refused the request for energy conservation (NO in Step S6 of
When approval of enough candidate customers to achieve the target energy conservation has been obtained, the request response controlling portion 8 reports ID information for specifying the candidate customers who have agreed to the requests to the environmental degradation level evaluating device 2 (Step S8 in
Additionally, a demand controlling device, not shown, executes electric power conserving measures (stopping or changing the operations of facilities and equipment) in relation to the candidate customers who have agreed to the electric power conservation requests. Such demand control is disclosed in, for example, the JP '639.
The environmental degradation level evaluating device 2 will be explained in detail next.
The environment information controlling portion 10 obtains, for each customer, environment information from during the electric power conservation periods, and information for specifying the electric power conservation periods, for each of the customers that have implemented the electric power conservation measures. For the environment information, there is, for example, the indoor temperature, humidity, and the like. Sensors for measuring the environment information are disposed in the building on the customer side, to obtain environment information through an environment information collecting device (not shown) on the customer side. This environment information that has been obtained from the customer side is added to the ID information that specifies the customer. Note that in the present example, the environment information is time-series measurement values that are measured at uniform time intervals.
The environment information controlling portion 10 stores, in the environment information storing portion 11, the environment information that has been obtained, information specifying the electric power conservation periods, and ID information for specifying customers. Here the information for specifying the electric power conservation periods is obtained from the environment information collecting device on the customer side, but the system may instead be such that it is obtained from a demand controlling device for executing the electric power conservation measures.
Note that in order to calculate the degree of environmental degradation for the customer, if the environment information of the customer during electric power conservation periods in the past is to be obtained from the customer side, then it is necessary for the environment information collecting device on the customer side to store the environment information during the electric power conservation periods of the past. Given this, rather than obtaining the environment information when calculating the degree of environmental degradation of the customer, instead the environment information may be obtained from the environment information obtained device on the customer side while the electric power conservation measures are being executed, for the customers for whom the IDs have been reported by the request response controlling portion 8.
The evaluation conditions controlling portion 12 stores, in advance, information for specifying the method for evaluating the environmental degradation. This information is set by the provider or service company. As the information for setting the method for evaluating the degree of environmental degradation, there is, for example, information for specifying the method for calculating an environment evaluation index value for evaluating the environment of the customer, information for specifying the acceptable conditions for the environment evaluation index value, information for specifying the method for calculating the environment degradation value, and the like.
As the environment evaluation index value for evaluating the environment of the customer, the room temperature, discomfort index, PMV (Predicted Mean Vote) that indicates the level of comfort, or the like, may be used.
The discomfort index is calculated from environment information for the customer (the room temperature and humidity). When the discomfort index is used as the environment evaluation index value, the method for calculating the discomfort index is set up in the environment condition controlling portion 12.
Moreover, while the PMV may also be calculated from the environment information of the customer (the room temperature and humidity), along with room temperature and humidity, information such as, for example, the average radiation temperature, air speed, amount of clothing, metabolic rate, and the like, are required. Reference values are used for these unclear information. When the PMV is used for the environment evaluation index value, the method for calculating the PMV is set up in the evaluation condition controlling portion 12. Calculations for the discomfort index, PMV, and the like, such as listed above, are well known technologies, so detailed explanations thereof will be omitted.
Note that the environment information (room temperature and humidity) used in calculating the discomfort index or the PMV is determined in agreement with the customer. Moreover, the environment information may be through measurement values at representative points within the building, indicated by the customer, and may be average values or weighted-average values of measured values at a plurality of measurement points. The average values for the environment information at the plurality of measurement points may be calculated by the environment information collecting device on the customer side, or may be calculated by the environment evaluating portion 13. If the average values for the environment information are calculated by the environment evaluating portion 13, then information indicating the method for calculating the average values of the environment information is included in the information for specifying the method for calculating the environment evaluation index values.
Moreover, even when room temperature itself is used as the environment evaluation index value, the room temperature that is included in the environment information may be a measured value at a representative point in the building, specified by the customer, or may be an average value, or a weighted average value, of measurement values from a plurality of measurement points. If the average values for the room temperature are calculated by the environment evaluating portion 13, then information indicating the method for calculating the average values of the room temperature is included in the information for specifying the method for calculating the environment evaluation index values.
As values that are used as acceptable conditions for the environment evaluation index value, there are, for example, upper and lower limit values for the acceptable range for the environment evaluation index value. When the environment evaluation index value is outside of the acceptable range, specified by the upper and lower limit values, then it is determined that the customer is affected by the environmental degradation. Note that the acceptable conditions for the environmental evaluation index value may be determined for each individual customer, or may be conditions that are common to all of the customers.
When the environment evaluation index value acceptable range is specified by upper and lower limit values, then the time over which the environment evaluation index value is outside of the acceptable range during an electric power conservation period may be calculated as the degree of environmental degradation. Conversely, the integral value for the environment evaluation index values that have gone outside of the acceptable range during the electric power conservation periods may be used as the degree of environmental degradation.
The environment evaluation index value deriving portion 130 of the environment evaluating portion 13, when attempting to calculate the degree of environmental degradation for the customer, obtains the customer environment information, the information that specifies the electric power conservation periods, and the ID information that specifies the customer, from the environment information storing portion 11 (Step S100 in
Additionally, the environmental degradation calculating portion 131 of the environment evaluating portion 13 evaluates whether or not the customer environment evaluation index value is outside of the acceptable range, calculates the degree of environmental degradation for the customer based on this evaluation result (Step S103 in
For example, a case wherein the PMV is used as the environment evaluation index value to specify upper and lower limit values for the acceptable range for the environment evaluation index value, and the amount of time, within the electric power conservation period, that the environment evaluation index value is outside of the acceptable range, is used as the environmental degradation level is illustrated in
A case wherein the PMV is used as the environment evaluation index value to specify upper and lower limit values for the acceptable range for the environment evaluation index value, and the integral value, within the electric power conservation period, of the environment evaluation index value that is outside of the acceptable range, is used as the environmental degradation level is illustrated in
At this time, the environmental degradation level D for customer A can be calculated as the value that is the integral value of the absolute value |PMV_a−PMV_a_limu| of the difference between the environment evaluation index PMV_a and the upper limit value PMV_a_limu or the integral value of the absolute value |PMV_a−PMV_a_liml| of the difference between the environment evaluation index PMV_a and PMV_a_liml, for each time the environment evaluation index value PMV_a goes outside of the acceptable range during the electric power conservation period.
In Expression (1), nu =P is the number of times that the environment evaluation index value PMV_a for the customer A exceeded the upper limit value PMV_a_limu of the acceptable range during the electric power conservation period, and nl=Q is the number of times that the environment evaluation index value PMV_a for the customer A was outside of the lower limit value PMV_a_liml of the acceptable range during the electric power conservation period. Note that the time interval from the environment evaluation index value PMV_a rising above the upper limit value PMV_a_limu until returning to the upper limit value PMV_a_limu is counted as once, and the time interval from the environment evaluation index value PMV_a falling below the lower limit value PMV_a_liml until returning to the lower limit value PMV_a_liml is counted as once. Consequently, in Expression (1) the ∫|PMV_a−PMV_a_limu|dt is the value for the integral from when the environment evaluation index value PMV_a rose above the upper limit value PMV_a_limu until it returned to the upper limit value PMV— a_limu, and the ∫|PMV_a−PMV_a_liml|dt is the value for the integral from when the environment evaluation index value PMV_a fell below the lower limit value PMV_a_liml until it returned to the lower limit value PMV_a_liml. The environmental degradation level evaluating device 2 is able to calculate the environmental degradation level for the customer as described above.
The electric power conservation planning device 1 explained in the present example may be embodied through a computer that is equipped with a CPU, a storage device, and an interface, combined with a program for controlling these hardware resources. The CPU executes the processes described in the present example in accordance with a program that is stored in the storage device. In the example in
The present invention can be applied to technologies for controlling electric power demand of customers.
Obviously, numerous modifications and variations of the present invention are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described herein.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2013-111577 | May 2013 | JP | national |
