System for optimizing utilization facility

Abstract

To provide a system for optimizing a utilization facility that can timely and accurately eliminate disadvantage for both a power company and a customer by determining timing of use in addition to quantitative determination of usage when determining suitability of an electricity usage contract.SOLUTION: A system 1 for optimizing a utilization facility includes: an acquisition unit 2 that acquires usage information that includes at least the amount of electricity used by a customer; a contract information storage unit 3 that stores contract information relating to a power usage contract; a comparison unit 4 that compares the usage information with the contract information and outputs comparison results for each customer; a determination unit 5 that divides the comparison results into a plurality of patterns, determines suitability of the power usage contracts for each customer corresponding to each of the plurality of patterns, and outputs the determination results; and a notification unit 6 that notifies a customer who falls under an inappropriate determination that the customer falls under the inappropriate determination at least when the determination result is inappropriate.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a utilization facility optimization system for realizing the optimization of a power usage contract concluded between a power company and a customer. In particular, by quantitatively and timely matching the content of the power usage contract with the amount of power used by the customer, the present invention relates to a utilization facility optimization system that determines the appropriateness of the power usage contract and timely notifies the customer of the determination result.

Background Art

[0002] Conventionally, the contract power capacity regarding power supply is the power capacity agreed upon between a power company and a customer, and is calculated according to either a method of adding up the equipment capacities of utilization devices in a load equipment contract or a method of setting the main switch capacity in a main switch contract as the upper limit. Then, the power company installs corresponding utilization facilities capable of supplying the agreed power capacity, and the customer uses this utilization facility. However, in addition to cases where there is an error in setting the contract power (the amount of power (kW) calculated based on the contract power capacity (kVA)) at the time of the contract, if the amount of power (kW) used by the customer exceeds or is significantly lower than the contract power, the power company or the customer will suffer disadvantages. Also, when the usage amount exceeds the contract power, since it exceeds the allowable capacity of the facilities on the power company side, there is also a risk of equipment failure. To solve such problems, technologies have been developed to notify customers with a warning when the customer's usage amount exceeds the contract power, and inventions related thereto have already been disclosed.

[0003] Patent Document 1 discloses an invention related to a power management device and a program, etc., which perform a notification operation when the average demand power during a predetermined period exceeds a plurality of levels of notification levels. The invention disclosed in Patent Document 1 includes a measurement unit for measuring the power consumption of an electrical device, an average demand power calculation unit for calculating an actual measurement value of the average demand power from the start of a predetermined period to the present based on the value obtained by integrating the power consumption from the start of the predetermined period to the present for each predetermined period, a comparison unit for setting multiple notification levels for the average demand power and comparing the actual measurement value of the average demand power with the multiple notification levels respectively, an output unit for outputting a contact signal when a coincidence unit determines that the actual measurement value of the average demand power exceeds the notification level, and a notification unit for notifying an alarm according to the level of the notification level exceeded by the actual measurement value. In an invention having such features, since the coincidence unit compares the actual measurement value of the average demand power obtained by the average demand power calculation unit with the multiple notification levels respectively, the consumer can know from the difference in the contact signals which notification level the actual measurement value of the average demand power has exceeded, and can take measures such as restricting power consumption or reviewing the contract power amount.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the reasons for the usage amount not matching the contract power include multiple types that vary depending on the passage of time since the contract. Such reasons include, for example, an error in the setting of the contract power as described above at the beginning of the contract, unapplied additional installations by the customer in the medium term, and an increase in measurement errors included in the customer's usage amount due to the aging deterioration of the utilization equipment in the long term. In the above cases, there is a possibility that although the usage amount actually does not exceed the contract power, it may be determined to have exceeded, or cases where a review of the contract content is essential may not be accurately detected. Regarding this point, in the invention disclosed in Patent Document 1, the matching part only makes a quantitative determination as to whether or not the measured value of the average demand power exceeds the notification level, and does not make a temporal determination based on the cause related to the passage of time. Therefore, there is a possibility that the above-mentioned inappropriate situation may occur. Therefore, there is a risk that the power company and the customer may not be able to take timely measures such as confirming and reviewing the contract terms and inspecting the usage facilities, or even if they take timely measures, the content may not be appropriate. In this case, the disadvantages of both the power company and the customer remain unresolved.

[0006] The present invention has been made in view of such conventional circumstances, and when determining the appropriateness of a power usage contract, in addition to making a quantitative determination of the usage amount, it makes a temporal determination based on the cause related to the passage of time, so as to timely and accurately eliminate the disadvantages of both the power company and the customer. The object is to provide an optimal utilization equipment system.

Means for Solving the Problem

[0007] To achieve the above object, a first invention includes an acquisition unit that acquires usage amount information including at least the amount of power used by a customer of a power company through usage facilities, a matching unit that matches the usage amount information with contract information regarding a power usage contract contracted between the power company and the customer and outputs a matching result for each customer, a determination unit that classifies the matching result into a plurality of patterns previously classified for determining the appropriateness of the power usage contract, extracts customers corresponding to each of the plurality of patterns, determines the appropriateness of each of the extracted customers, and outputs a determination result, and a notification unit that notifies the customer corresponding to the inappropriate determination that the determination result is an inappropriate determination at least when the determination result is an inappropriate determination.

[0008] In the invention having such a configuration, the usage amount information including at least the usage amount is, for example, in addition to the measured usage amount of the customer, the measurement time (year, month, day, time) when the usage amount was measured. Therefore, the matching result in which the matching unit matches and outputs the usage information and the contract information includes the result of matching the customer's usage with the contract power.

[0009] Therefore, for example, the determination unit focuses on the magnitude of the difference between the usage amount and the contract power, and distributes the matching result to a plurality of preset patterns according to the degree of this magnitude. Then, the determination unit extracts the customers corresponding to each pattern, determines the appropriateness of the power usage contract for each customer extracted according to each pattern, and outputs the determination result.

[0010] In addition, when the determination result output by the determination unit is an inappropriate determination, the notification unit notifies the customer corresponding to this inappropriate determination that it corresponds to the inappropriate determination. In addition, the notification unit may also notify the corresponding customer that it corresponds to an appropriate determination when the determination result output by the determination unit is an appropriate determination.

[0011] The second invention is the first invention, wherein the usage information is associated with a smart meter installed in a customer facility among the utilization facilities, and includes a contract number or a supply point designation number of the power usage contract, a usage amount obtained from the smart meter, and a system date which is the measurement time of the usage amount obtained from the smart meter. The contract information includes a contract number or a supply point designation number, a contract power or a main switch capacity of the power usage contract, and a related date which is the start time of the power usage contract. The matching unit matches the usage amount for each system date and the contract power or the main switch capacity respectively via the contract number or the supply point designation number, outputs a quantitative matching result included in the matching result, and matches the system date and the related date, and outputs a temporal matching result included in the matching result.

[0012] In the invention with such a configuration, the main switch capacity is a contract capacity (kVA) calculated based on the rated current (A) of the main switch of the customer facility and the voltage (V). In addition, since the usage information includes the usage amount and the system date which is the measurement time of the usage amount, the usage amount for each system date can be obtained. Furthermore, the contract information includes a contract number or a supply point order number assigned to each customer, contract power or main switch capacity, and a related date which is the start time of the power usage contract. Among these, the contract power and the main switch capacity are constant regardless of time, and the related date is a specific past date.

[0013] In the invention with the above configuration, in addition to the operation of the second invention, the quantitative matching result in which the matching part matches the usage amount for each system date with the contract power or the main switch capacity and outputs it becomes time-series data. Also, the timing matching result in which the matching part matches the system date with the related date and outputs it becomes data indicating how much time has elapsed from the start of the contract for each usage amount.

[0014] The third invention is characterized in that, in the second invention, the plurality of patterns are at least classified according to a combination criterion, and the combination criterion is a combination of a quantitative criterion for comparing the usage amount for each system date with the contract power or the main switch capacity respectively, and a timing criterion for comparing the system date with the related date. In the invention with such a configuration, the plurality of patterns may be composed of a combination criterion, or may be composed of a combination criterion and a quantitative criterion.

[0015] In the invention with the above configuration, in addition to the operation of the second invention, for example, if the quantitative criterion is classified according to the magnitude of the difference between the usage amount for each system date and the contract power, etc., and the timing criterion is classified according to the length of the elapsed time from the related date to the system date, the combination pattern will be the magnitude of the difference between the contract power, etc., according to the length of the elapsed time.

[0016] The fourth invention, in the second or third invention, the inappropriate determination is output when the quantitative matching result for each customer and the temporal matching result are classified into the following patterns (1) to (4) among a plurality of patterns. Let T1 be a predetermined number of years, T2 be a predetermined number of years longer than T1, a be a predetermined constant less than 1, and b be a predetermined constant greater than 1. Pattern (1) is that the contract power or main switch capacity < usage amount, and (reference date + T1) < system date. Pattern (2) is that (contract power or main switch capacity) × a > usage amount. Pattern (3) is that the contract power or main switch capacity < usage amount, and (reference date + T1) < system date < (reference date + T2). Pattern (4) is that (contract power or main switch capacity) × b < usage amount, and (reference date + T2) < system date. Note that T1 and T2 are not limited to specific numbers of years. a and b are also not limited to specific constants, but a < b.

[0017] In the invention with such a configuration, in addition to the operation of the second or third invention, the inappropriate determination is output for each of patterns (1) to (4). Also, since T1 and T2 are not limited to specific numbers of years and a and b are not limited to specific constants, the degree of freedom of the content of patterns (1) to (4) is increased.

Effect of the Invention

[0018] According to the first invention, since the determination unit outputs a determination result of an appropriate determination or an inappropriate determination, and the communication unit notifies at least the customers corresponding to the inappropriate determination that they correspond to the inappropriate determination, the power company and the customers can know whether the usage amount exceeds the contract power and can grasp the measures to be taken respectively.

[0019] According to the second invention, in addition to the effects of the first invention, the quantitative matching result becomes the usage amount for each system date and the time-series data including the contract power, etc., and the timing matching result becomes the data indicating how much time has elapsed from the start of the contract for the system date for each usage amount. Therefore, the power company and the customer can grasp the usage situation according to the passage of time since the start of the contract and take appropriate measures early. That is, the power company and the customer can eliminate the disadvantages of both the power company and the customer in a timely and accurate manner.

[0020] According to the third invention, in addition to the effects of the second invention, the determination unit can determine the appropriateness of the power usage contract for each customer by focusing on the magnitude of the difference in contract power, etc. according to the length of the elapsed time. Therefore, the power company and the customer can know the appropriateness of the power usage contract based on different causes depending on the passage of time since the contract.

[0021] According to the fourth invention, in addition to the effects of the second or third invention, since the inappropriate determination is output for each of patterns (1) to (4), the power company can convey the basis of the inappropriate determination to the customers corresponding to these patterns. In addition, since the degree of freedom of the content of patterns (1) to (4) is increased, the power company can extract, as desired, customers with a specific usage situation among customers with various usage situations.

Brief Description of the Drawings

[0022]

Figure 1

Figure 2

Figure 3

Figure 4

Modes for Carrying Out the Invention

Example

[0023] The utilization facility optimization system according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4. FIG. 1 is a configuration diagram of the utilization facility optimization system according to the example. As shown in FIG. 1, the utilization facility optimization system 1 according to the example includes an acquisition unit 2, a contract information storage unit 3, a matching unit 4, a determination unit 5, a notification unit 6, and a control unit 7 that controls the operations of the acquisition unit 2 to the notification unit 6. Among these, the acquisition unit 2 acquires usage information that at least includes the amount of power used by a customer of an electric power company through a utilization facility (not shown). The utilization facility is classified into a power generation facility and a power transmission and distribution facility that are facilities of the electric power company, and a customer facility that is a customer's facility. Specifically, the amount of power used is measured by a smart meter 30 installed in the customer facility among the utilization facilities, and is further transmitted from this smart meter 30 via a communication path 30a every 30 minutes. The content of the usage information will be described later.

[0024] The contract information storage unit 3 stores contract information regarding a power usage contract contracted between the electric power company and the customer. However, the contract information storage unit 3 may be installed in a server (not shown) of the electric power company instead of being installed in the utilization facility optimization system 1. In this case, the control unit 7 causes the acquisition unit 2 to acquire from the server. Also, the content of the contract information will be described later.

[0025] The matching unit 4 matches the usage information acquired by the acquisition unit 2 with the contract information stored in the contract information storage unit 3, and outputs a matching result for each customer. The content of this matching result will also be described later. The determination unit 5 classifies the matching result into a plurality of patterns previously classified for determining the validity of the power usage contract, extracts the customers corresponding to each of these plurality of patterns, determines the validity for each of the extracted customers, and outputs a determination result. The content of each of the matching result and the determination result will also be described later.

[0026] When at least the determination result output by the determination unit 5 is a non-conformance determination, the notification unit 6 notifies the customer corresponding to this non-conformance determination that it corresponds to a non-conformance determination. Specifically, the notification unit 6 transmits it to the customer terminal 31 of the corresponding customer via the communication path 31a.

[0027] Next, a processing method by the utilization facility optimization system will be described with reference to FIG. 2. FIG. 2 is a flowchart showing the flow of processing of the utilization facility optimization system according to the embodiment. As shown in FIG. 2, the utilization facility optimization method 10 executed by the utilization facility optimization system 1 includes a usage information acquisition step in step S1, a contract information reading step in step S2, a matching step in step S3, a determination step in step S4, and a notification step in step S5. Among these, the order of the usage information acquisition step in step S1 and the contract information reading step in step S2 may be interchanged. Hereinafter, each step will be described.

[0028] The usage information acquisition step in step S1 is a step in which the acquisition unit 2 acquires usage information from the smart meter 30. This usage information includes a contract number of a power usage contract associated with the smart meter 30, the usage amount B (kW) per 30 minutes acquired from the smart meter 30, and the system date (year, month, day Ds and time Ts) which is the measurement time of the usage amount B acquired from the smart meter 30. Note that instead of the contract number, a supply point designation number of the power usage contract associated with the smart meter 30 may be acquired. Also, since the contract number and the supply point designation number are numbers assigned to each customer and each customer facility, respectively, the customer can be identified by these. Then, the acquisition unit 2 transmits the acquired usage information to the matching unit 4.

[0029] The contract information reading step in step S2 is a step in which the contract information stored in the contract information storage unit 3 is read by the control unit 7 and transmitted to the matching unit 4. The contract information includes a contract number, contract power A of the electricity usage contract, and the associated date Dr (year / month / day), which is the start date of the electricity usage contract. Note that instead of contract power A, the main switch capacity may be read and transmitted.

[0030] In the matching process of step S3, the matching unit 4 matches the usage amount B´ (kWh) per system date and the contract power A with each other via the contract numbers included in the usage amount information and the contract information respectively, and outputs a quantitative matching result. Here, the usage amount B´ is a value obtained by doubling the usage amount B per 30 minutes. This is because the contract power A (kW) is conceptually equivalent to the amount of electricity (kWh) per hour, so in order to align the units, the usage amount B´ is set to twice the usage amount B. Therefore, the quantitative matching result is a table that includes the contract power A and the usage amount B´ for each contract number with respect to the system date. Note that when the main switch capacity is transmitted to the matching unit 4, the matching unit 4 matches the main switch capacity with the usage amount B´ instead of the contract power A.

[0031] Furthermore, in the matching process of step S3, the matching unit 4 matches the year / month / day Ds of the system date and the associated date Dr with each other via the contract number, and outputs a temporal matching result. Therefore, the temporal matching result is a table that includes the year / month / day Ds and the associated date Dr for each contract number. Also, both this temporal matching result and the quantitative matching result are included in the matching result.

[0032] The determination process of step S4 includes a sorting process in step S4-1 and an extraction process in step S4-2. In the sorting process of step S4-1, the determination unit 5 sorts the matching result that includes the quantitative matching result and the temporal matching result into patterns (1)-(5) that are pre-classified for determining the appropriateness of the electricity usage contract. In the extraction step of step S4-2, the determination unit 5 extracts the customers corresponding to patterns (1)-(5) via the contract numbers included in the matching result.

[0033] After that, the determination unit 5 determines whether each of the extracted customers is appropriate or inappropriate based on patterns (1)-(5), and outputs the determination result. Among these, the inappropriate determination is output when the quantitative matching result and the temporal matching result for each customer are classified into patterns (1)-(4) among patterns (1)-(5). Further, the output inappropriate determination is transmitted to the notification unit 6. In addition, the determination unit 5 outputs a list of the customers extracted in the extraction step of step S4-2 to a terminal (not shown) installed in the power company.

[0034] On the other hand, in the case of pattern (5), an appropriate determination is output. However, the appropriate determination is not transmitted to the notification unit 6. After that, the control unit 7 returns from the determination step of step S4 to the usage amount information acquisition step of step S1.

[0035] In the notification step of step S5, the notification unit 6 notifies the customers corresponding to the received inappropriate determination that they correspond to the inappropriate determination. After that, the control unit 7 returns from the notification step of step S5 to the usage amount information acquisition step of step S1.

[0036] Subsequently, an example of the usage amount for each system date will be described with reference to FIG. 3. FIG. 3(a) shows the usage amount B (kW) per 30 minutes acquired by the acquisition unit, and FIG. 3(b) shows the usage amount B' (kWh) per hour for each system date used for matching by the matching unit, where the contract power A is 10 (kW). In FIG. 3(a), the year, month, and day Ds of the system date (however, the display of the year is omitted) are shown at the uppermost row. Also, in the leftmost column, the measurement start time of the usage amount B measured by the smart meter 30 is shown, and in the second column from the left, the measurement end time of the usage amount B per 30 minutes measured by the smart meter 30 is shown. Both the measurement start time and the measurement end time are the time Ts of the system date. Then, a numerical value other than the date Ds and the time Ts corresponds to the usage amount B for the combination of the date Ds and the time Ts.

[0037] Next, also in FIG. 3(b), the date Ds of the system date is shown at the uppermost row, and the measurement start time and the measurement end time are shown in the first and second columns from the left, respectively. Then, a numerical value other than the date Ds and the time Ts corresponds to the usage amount B' for the combination of the date Ds and the time Ts. Among this usage amount B', since the numerical values within the thick frames each exceed the contract power A (= 10 kW), the determination unit 5 will allocate them to pattern (1) described later in the allocation process of step S4-1.

[0038] Next, patterns (1)-(5) will be described. Patterns (1)-(5) are classified according to a quantitative criterion and a combination criterion. The quantitative criterion is a criterion for comparing the usage amount B' per system date with the contract power A or the main switch capacity, respectively. Also, the combination criterion is a combination of the quantitative criterion and a temporal criterion for comparing the date Ds of the system date with the associated date Dr.

[0039] Furthermore, the specific content of patterns (1)-(5) will be described. Here, let T1 be a predetermined number of years, T2 be a predetermined number of years longer than T1, a be a predetermined constant less than 1, and b be a predetermined constant greater than 1. Pattern (1) is such that the contract power A < the usage amount B' per system date (date Ds and time Ts), and (associated date Dr + T1) > the date Ds of the system date.

[0040] Pattern (2) is such that the contract power A × a > the usage amount B' per system date (date Ds and time Ts).

[0041] Pattern (3) is such that the contract power A < the usage amount B' for each system date (year, month, day Ds and time Ts), and (associated date Dr + T1) < the year, month, and day Ds of the system date < (associated date Dr + T2).

[0042] Pattern (4) is such that the contract power A × b < the usage amount B' for each system date (year, month, day Ds and time Ts), and (associated date Dr + T2) < the year, month, and day Ds of the system date. And pattern (5) is the case where it does not fall under any of patterns (1) - (4). Note that in patterns (1) - (5), the main switch capacity may be used instead of the contract power A.

[0043] Subsequently, the processing result by the utilization equipment optimization system will be described with reference to FIG. 4. FIG. 4 is an example of the processing result of the utilization equipment optimization system according to the embodiment and a corresponding action taken according to this processing result. In FIG. 4, the first to fifth columns from the left are respectively the pattern, the quantitative criterion or the combination criterion, the customer's situation and the necessity of contract review, the corresponding actions that the utilization equipment optimization system 1 can take, and the notification frequency to the customer by the notification unit 6. Specifically, patterns (1), (3), and (4) are respectively classified by the combination criterion (the upper part is the quantitative criterion and the lower part is the time criterion), and pattern (2) is classified by the quantitative criterion. Also, in patterns (1) - (4), T1 is set to 1 year, T2 is set to 10 years, a is set to 0.1, and b is set to 1.2.

[0044] As shown in FIG. 4, in patterns (1), (3), and (4), the usage amount B' exceeds the contract power A respectively, and it is essential to review the power usage contract. Also, in pattern (2), the usage amount B' is much lower than the contract power A, and it is recommended to review the power usage contract. In pattern (5), since there is no particular problem, contract review and corresponding actions are not required.

[0045] Among these, in pattern (1), T1 is set to 1 year in order to detect that, at the beginning of the contract, due to errors in setting the contract power, there is a risk of losses for both the power company and the customer. Also, the notification frequency is once a month if it falls under pattern (1) even once a month.

[0046] In pattern (2), a is set to 0.1 in order to detect that, since the usage amount B´ is much lower than the contract power A, the customer may suffer losses. Also, the notification frequency is once every time the maximum value of the usage amount B´ falls under pattern (2).

[0047] In pattern (3), T1 is set to 1 year and T2 is set to 10 years in order to detect that, in the medium term, due to unapplied additional installations by the customer, the power company may suffer losses and there is a risk of equipment failure because it exceeds the allowable capacity of the power company's equipment. Also, the notification frequency is once every time it falls under pattern (3) even once a month and has not been notified in the past one year of the system date.

[0048] In pattern (4), T2 is set to 10 years and b is set to 1.2 in order to detect that, in the long term, due to the aging deterioration of the utilization equipment, the measurement error included in the customer's usage amount B increases, and there is a risk that the usage amount B´ exceeds the contract power A. Also, the notification frequency is once every time it falls under pattern (4) even once a month and has not been notified in the past one year of the system date.

[0049] As described above, according to the utilization equipment optimization system 1, when the customer's usage amount B´ and the date Ds of the system date thereof fall under patterns (1) - (4) respectively, in order to notify that it corresponds to an inappropriate judgment, the power company and the customer can know whether the usage amount B´ exceeds the contract power A, and can grasp the measures to be taken respectively.

[0050] Further, according to the utilization facility optimization system 1, the quantitative matching result output by the matching unit 4 is a table including the contract power A and the usage amount B' for the system date, shown for each contract number, and the temporal matching result output by the matching unit 4 is a table including the date Ds and the associated date Dr, shown for each contract number. That is, the quantitative matching result becomes time-series data showing the difference between the usage amount for each system date and the contract power, etc., and the temporal matching result becomes data showing how much time has elapsed from the contract start for the system date for each usage amount. Therefore, since the power company and the customer can grasp the situation of the usage amount B' according to the time, the disadvantages of both the power company and the customer can be eliminated in a timely and accurate manner.

[0051] Furthermore, according to the utilization facility optimization system 1, the determination unit 5 can extract customers according to patterns (1)-(5) classified according to a quantitative standard and a combination standard, and can determine the appropriateness of the power usage contract for each customer. Therefore, the power company and the customer can know the appropriateness of the power usage contract based on different causes depending on the passage of time since the contract.

[0052] In addition, according to the utilization facility optimization system 1, since the inappropriate determination is output for each of patterns (1) to (4), the power company can convey the basis of the inappropriate determination to the customers corresponding to these patterns. Therefore, it is easy for the customer to understand that the contract needs to be reviewed, and as a result, the review of the contract is promoted.

[0053] Note that the utilization facility optimization system according to the present invention is not limited to that shown in the embodiments. For example, even when the determination unit 5 outputs an appropriate determination, this appropriate determination may be notified to the power company or the customer. Also, in patterns (1)-(5), T1 and T2 may be years other than 1 year and 10 years respectively, and a and b may also be constants other than 0.1 and 1.2 respectively. Furthermore, the number of classification patterns may be other than 5.

Industrial Applicability

[0054] The present invention can be used as a utilization facility optimization system that realizes optimization of a power usage contract contracted between an electric power company and a customer.

Explanation of Signs

[0055] 1... Utilization facility optimization system 2... Acquisition unit 3... Contract information storage unit 4... Verification unit 5... Judgment unit 6... Notification unit 7... Control unit 10... Utilization facility optimization method 30... Smart meter 30a... Communication path 31... Customer terminal 31a... Communication path

Claims

1. An acquisition unit that acquires usage information including at least the amount of power used by a customer of an electric power company through usage equipment; A matching unit that matches the usage information with contract information regarding a power usage contract contracted between the electric power company and the customer, and outputs a matching result for each customer; A determination unit that classifies the matching result into a plurality of patterns previously classified for determining the validity of the power usage contract, extracts the customers corresponding to each of the plurality of patterns, determines the validity for each of the extracted customers, and outputs a determination result; A utilization equipment optimization system characterized by comprising a notification unit that notifies the customer corresponding to the inappropriate determination of the fact that the inappropriate determination applies, at least when the determination result is an inappropriate determination.

2. The usage information includes a contract number or a supply point designation number of the power usage contract associated with a smart meter installed in customer equipment among the usage equipment, the usage amount acquired from the smart meter, and the system date which is the measurement time of the usage amount acquired from the smart meter; The contract information includes the contract number or the supply point designation number, the contract power or the main switch capacity of the power usage contract, and the associated date which is the start time of the power usage contract; The matching unit, via the contract number or the supply point designation number; Matches the usage amount for each system date with the contract power or the main switch capacity, respectively, outputs a quantitative matching result included in the matching result, and Matches the system date with the associated date, and outputs a temporal matching result included in the matching result. The utilization equipment optimization system according to claim 1.

3. The plurality of patterns are classified according to at least a combination criterion; The combination criterion is a combination of a quantitative criterion for comparing the usage amount for each system date with the contract power or the main switch capacity, respectively, and a temporal criterion for comparing the system date with the associated date. The utilization equipment optimization system according to claim 2.

4. The inappropriate determination is output when the quantitative matching result and the temporal matching result for each customer are classified into the following patterns (1) to (4) among the plurality of patterns; T １ for a predetermined number of years, T ２ for said T １ If a predetermined number of years longer than said T, a is a predetermined constant less than 1, and b is a predetermined constant greater than 1, then The pattern (1) is such that the contract power or the main switch capacity < the usage amount, and (the associated date + the T １ ) > the system date. The pattern (2) satisfies the condition that (the contract power or the main switch capacity) × a > the usage amount. The pattern (3) satisfies the condition that the contract power or the main switch capacity < the usage amount, and (the associated date + the T １ １ ２ ２ ) < the system date < (the associated date + the T １ ２ ) and The pattern (4) satisfies the conditions that (the contract power or the main switch capacity) × b < the usage amount, and (the associated date + the T ２ ) < the system date, and is characterized by the utilization equipment optimization system according to claim 2 or claim 3.

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