JP2014003727A - Power control system and power monitoring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To consider the degree of significance of each base included in an enterprise, and determine a power amount that each base can consume depending on states of power consumption at other bases.SOLUTION: A power monitoring device 10 comprises: an estimation unit 12 which estimates an index value showing a power consumption state of the whole bases after predetermined time has passed on the basis of power consumption amount information on all bases, every time the power consumption amount information is periodically transmitted from all of the bases; a reduction amount determination unit 13 which determines a reduction amount of use power for each base by distributing excess to normal bases except a significant base, when an estimation value obtained by the estimation unit 12 exceeds a preset total target value for the whole bases and especially when an estimation value for the whole significant bases exceeds the target value; and a reduction instruction unit 14 which instructs reduction in use power by notifying a power control device 20 installed in each base of a reduction amount of use power in the base.

Description

  The present invention relates to a power control system and a power monitoring device, and more particularly to power supply control at each site in a company.

  In a company with a demand contract as a power supply contract, the power consumption is constantly monitored so as not to exceed the contract power. When there are multiple bases such as office buildings and factories, companies should reduce the power consumption at all bases so that the power consumption, peak power, demand power, etc. at each base do not exceed the target value set for each base. Need to be monitored. Conventionally, the operation status of each electrical device at all locations is centrally managed at the central monitoring center, and when the total demand power is likely to exceed the alarm level, the supply of power to the electrical device is stopped according to the ranking list. A technique has been proposed (for example, Patent Document 1).

JP 2001-320832 A

  However, in the past, in order not to exceed the target value of power consumption in a company, the power consumption is adjusted for each site, and power supply control is focused on the power consumption of the entire company. Did not go.

  An object of the present invention is to determine the amount of power that may be consumed at each base in accordance with the power consumption status at other bases by considering the importance of each base included in the company.

  The power control system according to the present invention has a plurality of power control devices that are installed at each base and control the use of power at the base, and a power monitoring device that monitors the power consumption at each base. The power monitoring apparatus, after every time the power consumption information is periodically transmitted from all of the bases, based on the transmitted power consumption information of all the bases, A predicting unit that predicts an index value indicating the power consumption status, and a reduction amount of power used at each site when the index value predicted by the predicting unit exceeds a preset overall target value for the entire site. The amount of power used is notified by notifying the power consumption control device installed at the base of the amount of power used at each base determined by the reduction amount determining means and the reduction amount determining means. A reduction instruction means for instructing reduction, and the reduction amount determination means is an important in which predicted index values for all important bases preset as high importance bases are preset in all bases. When the important base target value for the whole base is exceeded, the excess amount is distributed to the normal bases other than the important bases to determine the amount of power consumption reduction at each base.

  Further, the reduction amount determination means distributes the excess amount to each normal base according to a priority set in advance for the normal base.

  In addition, the reduction amount determining means, when there is a normal base where the predicted index value among the normal bases does not reach the target value set in advance, the normal base that does not reach the target value. The excess is distributed, and the remaining portion is distributed to each normal base.

  Each of the power control devices includes facility priority information storage means for storing equipment priority information in which priority of power use for each equipment at the base is preset, and the base instructed by the reduction instruction means. Power control means for stopping the use of power in order from the equipment with the lowest priority set in the equipment priority information until the amount of reduction is reached.

  The power control system according to the present invention has a plurality of power control devices that are installed at each base and control the use of power at the base, and a power monitoring device that monitors the power consumption at each base. The power monitoring apparatus, after every time the power consumption information is periodically transmitted from all of the bases, based on the transmitted power consumption information of all the bases, Predictive means for predicting an index value indicating the power consumption status, and facility priority information in which the priority of power use for each facility at each site is set in advance, and is preset as a highly important site among all sites Equipment priority information storage means for storing equipment priority information in which higher priority is set for equipment at an important base that is relatively higher than equipment at a normal base other than the important base; When the index value predicted by the prediction means exceeds a preset overall target value for the entire base, the prediction means is based on power consumption information transmitted from the power consumption information transmission means thereafter. Until the index value predicted by the system is equal to or less than the overall target value, the stop of power use is installed in order from the equipment with the lowest priority set in the equipment priority information, the equipment installed at the base corresponding to the equipment Reduction instruction means for instructing the power control apparatus.

  The power monitoring apparatus according to the present invention includes a collection unit that collects power consumption information related to the power consumption of equipment measured at each site, and every time the power consumption information is periodically transmitted from all of the sites. In addition, a prediction unit that predicts an index value indicating a power consumption state after a predetermined time has elapsed in the entire site based on the transmitted power consumption information of all the sites, and an index value predicted by the prediction unit is set in advance. Reduction amount determination means for determining the reduction amount of power used at each base when the overall target value for the entire base is exceeded, and the reduction amount of power consumption at each base determined by the reduction amount determination means, A reduction instruction means for instructing reduction of power consumption by notifying the power control device installed at the base, and the reduction amount determination means has a high importance among all the bases If the predicted index value for all important bases set in advance exceeds the target target value for all important bases set in advance, the excess is distributed to normal bases other than the important bases. This determines the amount of reduction in power consumption.

  The power monitoring apparatus according to the present invention includes a collection unit that collects power consumption information related to the power consumption of equipment measured at each site, and every time the power consumption information is periodically transmitted from all of the sites. In addition, a prediction means for predicting an index value indicating a power consumption state after a lapse of a predetermined time in the entire base based on the transmitted power consumption information of all the bases, and a priority of power use for each facility in each base It is equipment priority information set in advance and has a higher priority than equipment in normal bases other than important bases for equipment in important bases that are preset as high importance bases among all bases. The equipment priority information storage means for storing the equipment priority information set, and the index value predicted by the prediction means exceeds the overall target value for the entire base set in advance Thereafter, set in the facility priority information until the index value predicted by the prediction unit based on the power consumption information transmitted from the power consumption information transmission unit thereafter becomes equal to or less than the overall target value. Reduction instruction means for instructing a base corresponding to the facility to stop using the power in order from the lowest priority facility.

  According to the present invention, the amount of power that can be consumed at each base can be determined according to the power consumption status at the other base by considering the importance of each base included in the company.

It is the figure which showed the whole structure and block structure of Embodiment 1 of the power control system which concerns on this invention. 2 is a hardware configuration diagram of a server computer that forms the power monitoring apparatus according to Embodiment 1. FIG. It is the figure which showed an example of the data structure of the equipment priority information set and registered in the equipment priority information storage part in Embodiment 1. 3 is a flowchart showing processing in the power monitoring apparatus in the first embodiment. 3 is a flowchart showing processing in the power control apparatus in the first embodiment. It is the figure which showed the whole structure and block structure of Embodiment 2 of the power control system which concerns on this invention. It is the figure which showed an example of the data structure of the equipment priority information set and registered in the equipment priority information storage part in Embodiment 2. 6 is a flowchart showing processing in the power monitoring apparatus in the second embodiment. 6 is a flowchart showing processing in the power control apparatus in the second embodiment.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

Embodiment 1 FIG.
FIG. 1 is a diagram showing an overall configuration and a block configuration of an embodiment of a power control system according to the present invention. In FIG. 1, a plurality of power control devices 20 installed at each base and controlling the power use of the equipment at the base and a monitoring center that manages each base are shown. A configuration is shown in which a power monitoring apparatus 10 to be monitored is connected via a network 1. Since the basic configuration of the power control apparatus 20 may be the same at each site, FIG. 1 shows only one power control apparatus 20 as a representative. Each facility installed at each base is connected to controllers 31 and 32 provided for each type of facility. FIG. 1 shows an illumination 33 and an air conditioner 34 as an example of equipment to which power is supplied. The power control apparatus 20 and each of the controllers 31 and 32 are connected to a network 30 such as a local area network (LAN) in the base. Each controller 31, 32 transmits the amount of power used in the connected equipment to the power control device 20. The used electric energy may be measured by each of the controllers 31 and 32. When the used electric energy measuring device is connected to the electrical equipment, the used electric energy measured by the used electric energy measuring device is used. You may make it transmit to the electric power control apparatus 20. FIG.

  FIG. 2 is a hardware configuration diagram of a server computer forming the power monitoring apparatus 10 according to the present embodiment. The server computer forming the power monitoring apparatus 10 in the present embodiment can be realized by a general-purpose hardware configuration that has existed in the past. That is, as shown in FIG. 2, the computer is provided as a CPU 41, ROM 42, RAM 43, HDD controller 45 connected to a hard disk drive (HDD) 44, a mouse 46 and keyboard 47 provided as input means, and a display device. An input / output controller 49 for connecting each display 48 and a network controller 50 provided as a communication means are connected to an internal bus 51. Since the power control apparatus 20 is also a computer, its hardware configuration can be illustrated in the same manner as in FIG.

  Returning to FIG. 1, the power monitoring apparatus 10 includes a power consumption amount information collection unit 11, a prediction unit 12, a reduction amount determination unit 13, a reduction instruction unit 14, a power consumption amount information storage unit 15, a target value information storage unit 16, and a base A priority information storage unit 17 is included. The power consumption amount information collection unit 11 is provided as a collection unit, collects power consumption amount information from the power control apparatus 20 at each site, and registers it in the power consumption amount information storage unit 15. The prediction unit 12 is provided as a prediction unit, and every time power consumption information is periodically transmitted from all of the bases, a predetermined time elapses in the entire base based on the transmitted power consumption information of all the bases. An index value indicating a subsequent power consumption state, that is, an index value in the company (hereinafter, “predicted value”) is predicted. The reduction amount determination unit 13 is provided as a reduction amount determination unit, and determines a reduction amount of electric power used at each base when the predicted value calculated by the prediction unit 12 exceeds a preset overall target value for the entire base. To do. The reduction instructing unit 14 is provided as a reduction instructing unit, and notifies the power control device installed at the base of the power consumption reduction amount determined at the base determined by the reduction amount determining unit 13. Direct reduction. The power consumption information storage unit 15 stores power consumption information transmitted from each base. In the target value information storage unit 16, the aforementioned overall target value for the entire base and the target value for each base are set and registered. As target values to be set, power consumption (Kw) (hereinafter referred to as “target demand”) set as a target (upper limit) set based on the demand contract, power consumption (Kw) (Kw) as target (upper limit) at peak time ( Hereinafter, “peak power”) and power consumption (Kw / h) (hereinafter “target power”) as a target (upper limit) per unit time are set in advance for each base. In the present embodiment, the target value for the entire base is used when power supply control is performed. The target value for the entire base is obtained by obtaining the sum of the target values set for each base. In the site priority information storage unit 17, the priority of each site is set.

  By the way, in this embodiment, all bases are classified into important bases and normal bases. An “important base” is a base that is set in advance as a highly important base and does not want to stop power supply even if the target value set for the base is exceeded. For example, it differs depending on companies such as stores used by customers and factories that manufacture important products. Identification information indicating an important base is set in advance as a priority for the important base. On the other hand, “normal bases” are all bases except for important bases among all bases. Priorities are set in advance as priorities for each normal base. In this embodiment, each target value at an important base and a normal base is used when controlling the use of power. These target values are obtained by calculating the total of the target values set at each corresponding base. can get.

  Each component 11 to 14 in the power monitoring apparatus 10 is realized by a cooperative operation of a computer that forms the power monitoring apparatus 10 and a program that operates on the CPU 41 mounted on the computer. The storage units 15 to 17 are realized by the HDD 44 or the RAM 43 mounted on the power monitoring apparatus 10. Alternatively, external storage means accessible via a network or the like may be used.

  The power control apparatus 20 includes a power consumption monitoring unit 21, a power consumption amount information transmission unit 22, an instruction reception unit 23, a power control unit 24, a power usage result information storage unit 25, and a facility priority information storage unit 26. . The used power monitoring unit 21 collects information for specifying the used power amount in each facility via the controllers 31 and 32 and registers the collected information in the used power result information storage unit 25. The power consumption amount information transmitting unit 22 periodically transmits power consumption amount information related to the power consumption amount of the equipment measured at the base to the power monitoring device 10, for example, at intervals of 30 minutes. The instruction accepting unit 23 accepts an instruction related to reduction of used power transmitted from the power monitoring apparatus 10. The power control unit 24 is provided as a power control unit, and controls the power usage of each facility at the base. Information collected by the used power monitoring unit 21 is accumulated in the used power record information storage unit 25. The equipment priority information storage unit 26 is provided as equipment order setting information storage means, and stores equipment priority information in which the priority of power use for each equipment at the base is preset.

  The components 21 to 24 in the power control device 20 are realized by a cooperative operation of a computer that forms the power control device 20 and a program that operates on the CPU 41 mounted on the computer. The storage units 25 and 26 are realized by the HDD 44 or the RAM 43 mounted on the power control apparatus 20. Alternatively, external storage means accessible via a network or the like may be used.

  Further, the program used in this embodiment can be provided not only by communication means but also by storing it in a computer-readable recording medium such as a CD-ROM or DVD-ROM. The program provided from the communication means or the recording medium is installed in the computer, and various processes are realized by the CPU of the computer sequentially executing the program.

  FIG. 3 is a diagram showing an example of the data configuration of the equipment priority information set and registered in the equipment priority information storage unit 26 in the present embodiment. In the facility priority information, information for identifying a facility to which the priority order is assigned as a power use stop target facility is set for each priority order of a stop group including one or a plurality of facilities for stopping power use. According to the setting example in FIG. 3, the lowest priority 1 is assigned to the facility specified by the facility identification information “B1F backyard (1) air-conditioning PAC-1A”. Moreover, the highest priority 15 is assigned to the equipment specified by the equipment identification information of “7F exclusive part (2) lighting”. In other words, based on the usage status of each facility, the power supervisor, for facilities such as “B1F backyard (1) air-conditioning PAC-1A”, which does not affect the work so much even if the operation is stopped, In order to preferentially stop the use of power, a priority with a relatively low priority is set. On the other hand, for equipment that is so important as to affect operations, etc. when the operation is stopped, such as “7F dedicated part (2) lighting”, the power is continuously used as it is so as not to stop as much as possible. A priority with a relatively high priority is set for.

  In the present embodiment, 15 levels of priority are set in the facility priority information, but this is an example and the number is not limited to this number. In addition, although six facilities are assigned to each priority order, this is an example, and the number is not limited to this number, and a different number of facilities may be assigned depending on the priority order. Further, the lower the priority is, the lower the priority is, but the opposite may be possible.

  In a company, the upper limit value of power that can be used according to demand power, that is, the above target value is set for each site, and in principle, power control is performed so that the electrical equipment is operated below the target value. However, depending on the location (corresponding to the “important location”), there is a case where it is desired to operate the electrical equipment even if the target value is exceeded.

  Therefore, in this embodiment, when the predicted power usage at important locations exceeds the target value, the excess (excess) is allocated to the normal locations, so that the enterprise does not exceed the target value as a whole. As described above, the power use is controlled.

  Next, the operation in this embodiment will be described.

  In each base, power is always used in consideration of standby power and the like. Each controller 31, 32 transmits the amount of power used in the connected equipment to the power control device 20. When the power usage monitoring unit 21 in the power control apparatus 20 receives data on the power usage amount transmitted from each of the controllers 31 and 32, it registers it in the power usage result information storage unit 25. Then, the power consumption amount information transmission unit 22 generates power consumption amount information based on the information accumulated in the used power result information storage unit 25. The generated power consumption amount information includes at least the identification information of the base, the period during which power is consumed (for example, 30 minutes), and the amount of power consumed within the period. Then, the power consumption amount information transmission unit 22 transmits the generated power consumption amount information to the power monitoring apparatus 10 at regular intervals every predetermined period.

  In the present embodiment, the power consumption amount information transmission unit 22 generates power consumption amount information and transmits it to the power monitoring device 10, but the information accumulated in the used power history information storage unit 25 is used as it is. The power monitoring apparatus 10 may generate power consumption information by transmitting the information. In the present embodiment, since the prediction unit 12 predicts the power consumption after the current time using the power consumption, the power consumption information only needs to be generated before the prediction process is executed. Alternatively, the power consumption amount information (actual value) may be generated by itself when the prediction unit 12 predicts the power consumption amount.

  FIG. 4 is a flowchart showing processing in the power monitoring apparatus 10 in the present embodiment, and FIG. 5 is a flowchart showing processing in the power control apparatus 20 in the present embodiment. Hereinafter, the power control processing in the present embodiment will be described using these flowcharts.

  The power consumption amount information collection unit 11 in the power monitoring apparatus 10 collects the power consumption amount information of each base and registers it in the power consumption amount information storage unit 15. Then, in the present embodiment, the following processing is executed at regular intervals, with an interval of 30 minutes.

  First, when the prediction unit 12 acquires power consumption information by reading the power consumption information from the power consumption information storage unit 15 (step 101), the prediction unit 12 calculates a predicted value for each site after a predetermined time has elapsed, for example, 30 minutes later. The predicted values to be calculated are the power consumption (Kw) after a lapse of a predetermined time, the power consumption (Kw) that peaks within a predetermined period after the lapse of the predetermined time, and the power consumption (Kw) per unit time after the lapse of the predetermined time. / H). And the prediction part 12 calculates each prediction value in the said whole company by calculating | requiring the sum total of the prediction value calculated for every base (step 102). Note that the prediction value calculation method itself may use a conventional technique.

  Here, the reduction amount determination unit 13 reads each target value set in the target value information storage unit 16 and compares each target value with each prediction value calculated by the prediction unit 12. In the present embodiment, three types of index values are obtained and compared with the target value, but at least one may be used. In addition, other indices may be used. If any predicted value is less than or equal to the target value (N in step 103), it is estimated that the power consumption after a predetermined time has not exceeded any of the target demand, peak power, and target power amount. The facilities will be operated as they are.

  On the other hand, if any one of the predicted values exceeds the target value (Y in Step 103), it is determined that it is necessary to stop the power usage of any of the facilities and reduce the amount of power used. Therefore, in the present embodiment, processing is performed as follows.

  First, the reduction amount determination unit 13 calculates the reduction amount in the entire important base (step 104). This may be obtained by calculating the difference between the predicted total power consumption of each important base and the total target power consumption value. Here, if the reduction amount exceeds 0 (Y in step 105), the reduction amount, that is, the excess amount is first allocated to the normal base with enough space to be absorbed by the normal base (step 106). In other words, normal bases with predicted values less than the target value in the normal bases still have room for power use even if they consume power themselves. undertake. For example, in the case where there are normal bases with 40, 50, 60 allowances, if the excess of all the important bases is 120, the allowance of the above three normal bases with allowances is 150, so the reduction amount can be absorbed. . Note that how to distribute the excess 120 may be distributed with reference to, for example, a margin ratio or a priority set for the normal base. On the other hand, if the excess in the entire important base is 200, 50 of them cannot be absorbed. In other words, if there is still a remainder even after the excess amount is absorbed at a normal base with a margin (Y in step 107), the remainder is distributed to each normal base according to the priority set for each normal base. (Step 108). In other words, a normal base with a low priority takes on a relatively larger excess than a normal base with a high priority. In other words, the power usage is restricted in the normal base with lower priority.

  Subsequently, the reduction amount determination unit 13 determines the reduction amount of each normal base (step 109). When the amount of reduction at the entire important base is 0 or less, that is, when there is no excess (N in Step 105), in this case, the predicted value exceeds the target value at the entire normal base. The normal base whose value exceeds the target value may be configured to reduce the power consumption of the excess (excess) at the base. Of course, similar to the relationship with the important base, a normal base with a margin may absorb the excess by taking over the excess. Or you may make it distribute and adjust the excess in the whole normal base according to the priority of a normal base. Further, it may be assumed that there is a margin in the important base and an excess amount occurs in the normal base, but in this case, the important base may absorb the excess in the normal base.

  In addition, when all the reductions are absorbed only by the normal bases with sufficient margin (N in Step 107), the normal bases whose predicted values exceeded the target values as described above exceeded the reduction amount in the important bases as a whole. The amount of excess (excess) should be reduced at your site.

  As described above, when the power consumption exceeding the target value is predicted in the entire important base, the reduction amount determination unit 13 in the present embodiment distributes the predicted excess to each normal base. Decide the amount of power consumption to be reduced.

  When the reduction amount determination unit 13 obtains a reduction amount for each normal base, the reduction instruction information including each reduction amount is transmitted to the normal base to instruct a reduction in power usage (step 110). Since the important base does not reduce the amount of power used, it is not necessary to transmit the reduction instruction information, but the reduction instruction information with the reduction amount = 0 may be transmitted.

  In the present embodiment, when power usage exceeding the target value is predicted in the entire important base as described above, the predicted reduction amount, that is, the excess reduction is not performed in the important base itself, It was made to carry out by allocating to a normal base with a relatively low priority. That is, in each important base, even if it is predicted that electric power usage exceeding the target value set in the local base is predicted, it is not necessary to reduce the excess.

  In this embodiment, the reduction amount is first allocated to a normal base with a margin, and the remainder is allocated according to the priority of the normal base. Regardless of the normal base, it may be distributed according to the priority. The present embodiment is characterized in that the power consumption for each company as a whole is reduced to the target value or less, that is, the target is achieved by placing the excess amount in the entire important base on the normal base. The method of allocating the excess amount to the normal bases is not limited to the above example, and various methods may be adopted. Further, the distribution method may be switched as appropriate according to time.

  In FIG. 5, when the reduction instruction information is transmitted from the power monitoring apparatus 10. The instruction receiving unit 23 acquires the reduction instruction information (step 121). Subsequently, when the power control unit 24 detects that the instruction receiving unit 23 has acquired the reduction instruction information, the power control unit 24 acquires a reduction amount included in the reduction instruction information. Then, after initializing n representing the priority order with 1 (step 122), the equipment priority information storage unit 26 is referred to and the controllers 31 and 32 corresponding to the equipment belonging to the stop group with the priority order 1 are instructed. . In response to this, the corresponding controllers 31 and 32 stop the use of power to the designated equipment (step 123). As a method for stopping the use of power (a method for stopping operation), there are a method for stopping the supply of power to the equipment and a method for turning off the power to the equipment. Therefore, an appropriate method may be selected. .

  For example, referring to the equipment priority order setting information illustrated in FIG. 3, the stop groups of priority order 1 include “B1F backyard (1) air conditioning PAC-1A” and “B1F backyard (2) air conditioning PAC-1B. ”Is set, the power control unit 24 issues an instruction to stop these air conditioners 34 to the controller 32, and the controller 32 operates the air conditioner 34 according to this instruction. Give a stop (power off) instruction. Thereby, the electric power use in the said facility stops.

  Here, the power control unit 24 refers to the used power amount registered in the used power result information storage unit 25 after the operation of the corresponding facility is stopped, so that the power consumption amount corresponding to the instructed reduction amount is reduced. Whether or not the instructed reduction amount has been reached (N in step 124), n indicating the priority order is incremented by 1 (step 125). Here, since the priority is 2, the power control unit 24 refers to the equipment priority information storage unit 26 and instructs each of the controllers 31 and 32 corresponding to the equipment belonging to the stop group of the priority 2. In response, the corresponding controllers 31 and 32 stop using the power of the designated equipment (step 123). Then, similarly to the above, if the instructed reduction amount has not been reached (N in Step 124), n indicating the priority order is incremented by 1 (Step 125). The power control unit 24 stops using the power in order from the equipment with the lowest priority set in the equipment priority information until the reduction amount of the base instructed by the reduction instruction unit 14 is reached. Then, when the reduction amount at the base reaches the instructed reduction amount (step 124), the stop control of the facility power use is terminated.

  In this way, once the reduction of the reduction amount instructed at each normal site is completed, the predicted value for the entire site should not exceed the target value. Return by starting.

  According to the present embodiment, in the power monitoring apparatus 10 in the monitoring center, when the predicted value of the power consumption exceeds the target value, the reduction amount at each base is determined. In particular, in the present embodiment, by allocating the excess at the important bases to the normal bases, it is possible to keep the power consumption in the entire company within the target value without restricting the use of power at the important bases.

Embodiment 2. FIG.
In the first embodiment, in the power monitoring apparatus 10 in the monitoring center, when the predicted value related to power consumption exceeds the target value, the reduction amount at each base is determined and notified. In other words, the equipment that actually stops the operation is determined by the power control apparatus 20 at each base having the equipment priority information storage unit 26 provided as equipment order setting information storage means. The present embodiment is characterized in that the equipment for stopping operation is specified on the monitoring center side by providing equipment rank setting information storage means on the power monitoring apparatus 10 side.

  FIG. 6 is a diagram showing an overall configuration and a block configuration of the power control system in the present embodiment. The same components as those in FIG. Unlike the first embodiment, the power control apparatus 20 in the present embodiment does not have the facility priority information storage unit 26. The power monitoring device 10 does not have the reduction amount determination unit 13 and the base priority information storage unit 17 provided in the first embodiment, but the facility priority information storage unit 18 provided in the power control device 20 Have.

  FIG. 7 is a diagram showing an example of the data configuration of the equipment priority information set and registered in the equipment priority information storage unit 26 in the present embodiment.

  The equipment priority information storage unit 18 provided as equipment priority information storage means in the present embodiment is equipment priority information in which priority of power use for each equipment at each base is set in advance, The facility priority information in which a relatively higher priority is set for the facility in FIG. For example, a relatively low priority is assigned to each facility of a relatively low priority base (each branch of A, B, C), while a relatively high priority base (D branch, A relatively high priority is assigned to each facility in each of the buildings E, F, and G).

  In the facility priority information storage unit 18, the priority order of the stop group is set for each facility according to the importance (priority) of the base as in this example. There is no need to refer to the base priority information storage unit. Therefore, it is not provided in this embodiment.

  Next, the operation in this embodiment will be described. Also in the present embodiment, as in the first embodiment, in each base, the usage status of the power consumption in each facility is collected, and the power consumption information collection unit 11 collects the power consumption information of each base, Register in the power consumption information storage unit 15.

  FIG. 8 is a flowchart showing processing in the power monitoring apparatus 10 in the present embodiment, and FIG. 9 is a flowchart showing processing in the power control apparatus 20 in the present embodiment. Hereinafter, the power control processing in the present embodiment will be described using these flowcharts.

  In FIG. 8, the processes (steps 101 to 103) until the power monitoring apparatus 10 calculates the predicted values for the entire company based on the power consumption information sent from the power control apparatus 20 and compares the target values. Since it is the same as that of Embodiment 1, description is abbreviate | omitted.

  Here, if any predicted value is less than or equal to the target value (N in Step 103), it is estimated that the power consumption after the lapse of a predetermined time does not exceed any of the target demand, the peak power, and the target power amount. Therefore, each facility will be operated as it is.

  On the other hand, if any one of the predicted values exceeds the target value (Y in Step 103), it is determined that it is necessary to stop the power usage of any of the facilities and reduce the amount of power used. Therefore, in the present embodiment, processing is performed as follows.

  That is, when it is determined that the predicted value exceeds the target value, the reduction instruction unit 14 initializes n representing the priority order with 1 (step 201), and then refers to the equipment priority information storage unit 18 to give priority. Equipment belonging to the stop group of rank 1 is acquired (step 202). And the instruction | indication which stops the electric power use of the said equipment is transmitted to the base corresponding to each equipment by transmitting the reduction instruction information containing the identification information which can specify the said equipment (step 203).

  In FIG. 9, when the instruction receiving unit 23 receives the reduction instruction information and receives an instruction to stop the power usage of the facility (step 221), the power control unit 24 stops the power usage of the instructed facility (step 221). 222). The method for stopping the use of electric power (method for stopping operation) may be the same as in the first embodiment.

  As described above, power is no longer used by the facility instructed to stop, so that power consumption at the base is reduced. Thereafter, the power consumption amount information transmitting unit 22 transmits the power consumption amount information to the power monitoring apparatus 10 periodically as usual.

  In FIG. 8, the power consumption amount information collection unit 11 in the power monitoring apparatus 10 registers the power consumption amount information transmitted from each base in the power consumption amount information storage unit 15 after a predetermined time has elapsed. And the reduction instruction | indication part 14 will calculate each prediction value in the said whole company similarly to step 102, if it acquires by reading power consumption information from the power consumption information storage part 15 (step 204) (step 204). 205).

  If any predicted value still exceeds the target value (Y in step 206), it is determined that it is necessary to further stop the power usage of any equipment and reduce the amount of power used. , N indicating the priority order is incremented by 1 (step 207). Here, the priority order is 2. Then, returning to step 202, the reduction instructing unit 14 refers to the facility priority information storage unit 18 and acquires facilities belonging to the stop group of priority 2 (step 202). Then, as described above, by sending the reduction instruction information to the base corresponding to each facility, an instruction to stop using the power of the facility is issued (step 203).

  Thereafter, the above-described processing is repeated. That is, when the power consumption predicted by the prediction unit 12 exceeds the overall target value, the prediction unit 12 predicts the power consumption information transmitted from the power consumption information transmission unit 22 thereafter. The power control device 20 installed in the base corresponding to the facility is stopped in order from the facility with the lowest priority set in the facility priority information until the amount of consumed power becomes equal to or less than the overall target value. Instruct repeatedly.

  As described above, in the present embodiment, it is possible to realize the power use below the target value by instructing the facility for stopping the power use on the power monitoring apparatus 10 side.

    In each of the above embodiments, the power usage of each base and each facility using the power monitoring device 10 installed in the monitoring center is centrally monitored, and when power usage exceeding the target value is predicted in the entire company, In addition to reducing the amount of power used at the bases, the excess can be distributed among the bases so that it can be adjusted below the target value. In particular, in the present embodiment, the power consumption in the entire company is not affected by causing the excess of important bases to be distributed to normal bases rather than restricting the use of power at important bases, without affecting the business at important bases. You will be able to achieve your goals.

  DESCRIPTION OF SYMBOLS 1 Network, 10 Power monitoring apparatus, 11 Power consumption information collection part, 12 Prediction part, 13 Reduction amount determination part, 14 Reduction instruction part, 15 Power consumption information storage part, 16 Target value information storage part, 17 Base priority Information storage unit, 18, 26 Equipment priority information storage unit, 20 Power control device, 21 Used power monitoring unit, 22 Power consumption information transmitting unit, 23 Instruction receiving unit, 24 Power control unit, 25 Used power record information storage unit 30 network, 31, 32 controller, 33 lighting, 34 air conditioner, 41 CPU, 42 ROM, 43 RAM, 44 hard disk drive (HDD), 45 HDD controller, 46 mouse, 47 keyboard, 48 display, 49 I / O controller, 50 Network controller, 51 Internal bus.

Claims (7)

A plurality of power control devices installed at each base and controlling the power use of equipment at the base;
A power monitoring device that monitors power consumption at each site;
Have
The power monitoring device includes:
Each time power consumption information is periodically transmitted from all of the bases, an index value indicating the power consumption state after a predetermined time has elapsed in the entire base based on the transmitted power consumption information of all the bases. Prediction means to predict;
A reduction amount determination means for determining a reduction amount of power used at each base when the index value predicted by the prediction means exceeds a preset overall target value for the entire base;
Reduction instruction means for instructing the reduction of power consumption by notifying the power control device installed at the base of the power consumption reduction amount determined at each base determined by the reduction amount determination means;
Have
The reduction amount determination means, when the predicted index value of all important bases preset as high importance bases out of all the bases exceeds the preset important base target value for the whole important bases, the excess A power control system characterized in that the amount of power used at each site is determined by allocating the amount to normal sites other than important sites.   2. The power control system according to claim 1, wherein the reduction amount determination unit distributes the excess amount to each normal base in accordance with a priority set in advance for the normal base.   When there is a normal base whose predicted index value does not reach the target value set in advance in the normal base among the normal bases, the reduction amount determining means exceeds the normal base that has not reached the target value. 3. The power control system according to claim 1 or 2, wherein the power is distributed and the remaining portion is further distributed to each normal base. Each of the power control devices
Facility priority information storage means for storing facility priority information in which the priority of power use for each facility at the base is set in advance;
Power control means for stopping power use in order from the equipment with the lower priority set in the equipment priority information until the reduction amount of the base instructed by the reduction instruction means is reached;
The power control system according to claim 1, further comprising: A plurality of power control devices installed at each base and controlling the power use of equipment at the base;
A power monitoring device that monitors power consumption at each site;
Have
The power monitoring device includes:
Each time power consumption information is periodically transmitted from all of the bases, an index value indicating the power consumption state after a predetermined time has elapsed in the entire base based on the transmitted power consumption information of all the bases. Prediction means to predict;
It is equipment priority information in which the priority of power usage for each equipment at each base is set in advance, and the equipment in the important base that is set in advance as the most important base out of all the bases other than the important base Facility priority information storage means for storing facility priority information set with a relatively higher priority than facilities at a normal base;
When the index value predicted by the prediction unit exceeds a preset overall target value for the entire base, the prediction is performed based on power consumption information transmitted from the power consumption information transmission unit thereafter. Until the index value predicted by the means is equal to or less than the overall target value, the stop of power use is installed in order from the equipment with the lowest priority set in the equipment priority information at the base corresponding to the equipment. Reduction instruction means for instructing the power control device;
A power control system comprising: A collection means for collecting power consumption information on the power consumption of equipment measured at each site;
Each time power consumption information is periodically transmitted from all of the bases, an index value indicating the power consumption state after a predetermined time has elapsed in the entire base based on the transmitted power consumption information of all the bases. Prediction means to predict;
A reduction amount determination means for determining a reduction amount of power used at each base when the index value predicted by the prediction means exceeds a preset overall target value for the entire base;
Reduction instruction means for instructing the reduction of power consumption by notifying the power control device installed at the base of the power consumption reduction amount determined at each base determined by the reduction amount determination means;
Have
The reduction amount determination means, when the predicted index value of all important bases preset as high importance bases out of all the bases exceeds the preset important base target value for the whole important bases, the excess A power monitoring apparatus characterized in that the amount of power used at each base is determined by allocating the amount to a normal base other than the important base. A collection means for collecting power consumption information on the power consumption of equipment measured at each site;
Each time power consumption information is periodically transmitted from all of the bases, an index value indicating the power consumption state after a predetermined time has elapsed in the entire base based on the transmitted power consumption information of all the bases. Prediction means to predict;
It is equipment priority information in which the priority of power usage for each equipment at each base is set in advance, and the equipment in the important base that is set in advance as the most important base out of all the bases other than the important base Facility priority information storage means for storing facility priority information set with a relatively higher priority than facilities at a normal base;
When the index value predicted by the prediction unit exceeds a preset overall target value for the entire base, the prediction is performed based on power consumption information transmitted from the power consumption information transmission unit thereafter. Reduction instructing the bases corresponding to the equipment to stop using power in order from the equipment with the lowest priority set in the equipment priority information until the index value predicted by the means falls below the overall target value Instruction means;
A power monitoring apparatus comprising:

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