CN102447307B - Electricity arithmetic unit, electricity calculation server, electricity arithmetic system and electric quantity computing method - Google Patents
Electricity arithmetic unit, electricity calculation server, electricity arithmetic system and electric quantity computing method Download PDFInfo
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- CN102447307B CN102447307B CN201110245418.5A CN201110245418A CN102447307B CN 102447307 B CN102447307 B CN 102447307B CN 201110245418 A CN201110245418 A CN 201110245418A CN 102447307 B CN102447307 B CN 102447307B
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Abstract
The invention provides a kind of electricity arithmetic unit, electricity calculation server, electricity arithmetic system and electric quantity computing method.When demand with indoor be provided with the decentralized power ss such as solar power generation and storage battery, cannot learn that opposite tide electric power is the electric power of decentralized power s or the electric power of storage battery.Electricity arithmetic unit of the present invention arranges the unit of the unit of the output electricity measuring decentralized power s and the charge/discharge electricity amount of measurement storage battery, the consumes power of demand user is gathered together with opposite tide electricity, a side less in the electricity of the discharge electricity amount and the electricity obtained and decentralized power s of deducting storage battery from opposite tide electricity, be estimated as the electricity produced due to the generating of decentralized power s in opposite tide electricity.
Description
Technical field
The present invention relates to electricity arithmetic unit, electricity calculation server, electricity arithmetic system and electric quantity computing method.
Background technology
Due to the raising of earth environment protective awareness in recent years, in the clean energy resource not having environmental pollution, the solar power generation of solar cell is utilized to receive publicity.About solar power generation, by coming load supplying with the parallel running of industrial electrical systems, part or all of oneself required electric power is maintained by solar power generation, and in the remaining situation of the generation power of solar cell, carry out so-called opposite tide (inverseloadflow) to industrial electrical systems.
Utilities Electric Co. buys the electric power of opposite tide with predetermined unit price, is considered to the encouragement to arranging solar power system.
When supplying the generation power of solar cell to industrial electrical systems, in solar power generation, generated output significantly changes according to sunshine amount, therefore in order to suppress the impact on industrial electrical systems, the such as voltage of surveillance tie point as recording in patent documentation 1, become the moment of the value outside prescribed limit at it, namely there occurs the moment of abnormal electrical power supply, stop the generating of solar power system.
In addition, such as in patent documentation 2 record, the voltage of surveillance tie point, close to make during set upper limit voltage generating export be less than maximum.
By these technology, in protection system with while making electric power system not depart from prescribed limit, implement the purchase of electric power.
On the other hand, in the system of storage battery, use storage battery to put aside night electricity to use by day, have the following advantages thus: the peak achieving electricity needs Utilities Electric Co. is moved (peakshift), for the cheap electric power that can utilize night demand user.But, need to make the electric power put aside at the night that the electricity charge are cheap opposite tide not occur by day.
As the technology for this problem, that records in known such as patent documentation 3 is such, in opposite tide process, carry out the control of the charging suppressing electric discharge and solar energy from night electricity charging battery to export, prevent the technology of the opposite tide of the electric power after with night electricity charging thus.
In addition, described in known such as patent documentation 4, control more than power purchase table vanishing when battery discharging, prevent the technology of the opposite tide of the electric power after with night electricity charging thus.
But the technology described in patent documentation 3, owing to needing for carrying out the mechanism controlled, therefore the investment burden of demand user side equipment increases the weight of, and in addition, owing to not allowing the opposite tide from storage battery, therefore there is the problem that cannot be used for system stabilization.
In addition, the technology described in patent documentation 4 remains the thinking of the opposite tide do not allowed from storage battery, in addition, there is the problem that cannot be used for system stabilization while its equipment investment burden.
[patent documentation 1] Japanese Unexamined Patent Publication 8-70533 publication
[patent documentation 2] Japanese Unexamined Patent Publication 6-332553 publication
[patent documentation 3] Japanese Unexamined Patent Publication 2009-33797 publication
[patent documentation 4] Japanese Unexamined Patent Publication 2007-209133 publication
Summary of the invention
The present invention is based on the thinking allowing to comprise the electric power of savings in a part for the electric power of opposite tide, namely, even if the object of the present invention is to provide a kind of electric power comprising savings in a part for the electric power of opposite tide, also can the electricity arithmetic unit of the computing electricity suitable with suitable opposite tide, electricity calculation server, electricity arithmetic system and electric quantity computing method.
The present invention according to the power wiring from demand user be supplied to electric power system opposite tide electricity, be supplied to the renewable electricity of the power wiring of described demand user from renewable energy power generation machine and be supplied to the accumulator electric-quantity of power wiring of described demand user from storage battery, when described in the electricity ratio calculated when deducting described accumulator electric-quantity from described opposite tide electricity, renewable electricity is large, described opposite tide electricity connects renewable electricity for the upper limit with described.
In the present invention, even if comprise the electric power of savings in a part for the electric power of opposite tide, also can the electricity of the suitable opposite tide of computing, therefore, it is possible to the discharge and recharge from storage battery is used for system stabilization.
Accompanying drawing explanation
Fig. 1 is system block diagram.
Fig. 2 is the block diagram of the structure representing house solar power system.
Fig. 3 is the figure of the list structure representing electric quantity data storehouse.
Fig. 4 is the figure of an example of the calculation procedure representing adjustment opposite tide electricity.
Fig. 5 is the system block diagram of the second embodiment.
Fig. 6 is the figure of the list structure in the electric quantity data storehouse representing the second embodiment.
Symbol description
101 demand users 1 (the first demand user)
102 demand users 2 (the second demand user)
103 demand users 3 (the 3rd demand user)
104 electric power data relay stations
105 electric power data accumulation hub
106,107 communication networks
108 pole type transformers
109 industrial electrical systems
Embodiment
Below, the mode of accompanying drawing explanation for implementing the first embodiment of the present invention is used.
Fig. 2 is the figure of an example of the decentralized power s system represented using solar cell as energy source.In addition, as decentralized power s, the generator of the renewable energy resources beyond solar cell can also be used.In fig. 2, in demand user 1 (101), decentralized power s system possesses solar panel 1011 and is built-in with the electric power conversion unit 1012 of inverter (inverter circuit), and this inverter (inverter circuit) is alternating current the DC power conversion exported from this solar panel 1011.From industrial electrical systems 204 via transformer station 212, and then via cutting off the circuit breaker 206 of industrial electrical systems 204, pole type transformer 108 and circuit breaker 205 based on frequency change or change in voltage, electric power is supplied to this electric power conversion unit 1012.Comprise the circuit breaker 205 disconnecting decentralized electric power and the individual operation detecting unit 207 making circuit breaker 205 off-the-line.
Based on output voltage and the output current of solar panel 1011, the generated output of computing solar panel 1011.
By controlling electric power conversion unit 1012, across certain time interval, the output voltage of solar panel 1011 being changed intermittently, exploring the power exported and reaching maximum magnitude of voltage.Be provided with electricity accumulating unit 1013, controlled to carry out discharge and recharge by electric power conversion unit 1014.Fair tide electrical measurement unit 1017 and opposite tide electrical measurement unit 1018 is provided with between pole type transformer 108.Display unit 211 when energy output is abnormal, discharge and recharge abnormal time etc. time show.
In FIG, thick line represents electric power system, and fine rule represents information system.Demand user 1 ~ 3 is connected with electric power data relay station 104 by communication network 106, and electric power data relay station 104 is connected with electric power data accumulation hub 105 by communication network 107.In addition, become and by industrial electrical systems 109, electric power is supplied to each demand user from pole type transformer 108, and by the dump power opposite tide of solar panel 1011 to the structure of system side.
Demand user 1 (101) possesses solar panel 1011 as generator unit, be the alternating current of industrial frequency by electric power conversion unit 1012 by the DC power conversion exported from solar panel 1011, for oneself load 1010, at this, except solar panel 1011, solar panel can also be set to form multiple solar panel, also can other wind-driven generator be set together, they are referred to as the generator based on regenerative resource, their energy output is called renewable electricity.In this case, the result obtained amounting to respective energy output is considered as the energy output of following explanation.
In addition, the output electricity of electric power conversion unit 1012 is measured by solar power generation electrical measurement unit 1015.
Electricity accumulating unit 1013 can carry out discharge and recharge to direct current.Electric power conversion unit 1014 is when electricity accumulating unit is charged state, input the alternating current supplied from electric power conversion unit 1012 or industrial electrical systems (or referred to as system) 109, electricity accumulating unit 1013 is supplied to after being transformed to direct current, when electricity accumulating unit 1013 is discharge condition, be be supplied to oneself load 1010 after alternating current by the DC power conversion supplied from electricity accumulating unit 1013, or be supplied to industrial electrical systems 109 as opposite tide.
The dump power that in the electric power of solar panel, oneself load 1010 cannot consume head tide flows to industrial electrical systems 109, or be supplied to electricity accumulating unit 1013 via electric power conversion unit 1014, its electricity is measured respectively by electricity accumulating unit charge/discharge electricity amount measuring unit 1016 and opposite tide electrical measurement unit 1018.
If cannot maintain oneself load 1010 by the electric power of solar panel, when electric power is not enough, accept the supply of electric power from industrial electrical systems 109, its electricity is measured by fair tide electrical measurement unit 1017.
Electric quantity data transmitting element 1019 is sent to electric power data relay station 104 each electricity recorded respectively by solar power generation electrical measurement unit 1015, electricity accumulating unit charge/discharge electricity amount measuring unit 1016, fair tide electrical measurement unit 1017, opposite tide electrical measurement unit 1018 via communication network 106.
In addition, demand user 2 (102), demand user 3 (103) are also the structures identical with demand user 1 (101).
In electric power data relay station (or referred to as server) 104, received the above-mentioned electric quantity data of the demand user be connected with the electric power system under pole type transformer 108 by electric quantity data receiving element 1041, in the DB1042 such as electric quantity data, preserve the above-mentioned electricity of each demand user.
In electric quantity data transmitting element 1019, by during measuring described opposite tide electricity, the solar panel 1011 be arranged in demand user 101, electric power conversion unit 1012, electricity accumulating unit 1013, electric power conversion unit 1014, the equipment (hereinafter referred to as " equipment ") such as oneself load 1010 state information (below by these state informations referred to as " state information ") associate record with consumes power and opposite tide electricity, and be sent to electric power data relay station 104.
At this, solar panel 1011 can be comprised as decentralized power s, with consumes power and opposite tide electricity explicitly recording and sending to the data of electric power data relay station 104 in can comprise the generating electricity of this decentralized power s (can be more than 1).
Certainly, in the data of this transmission, comprise charge capacity and the discharge electricity amount of at least more than one storage battery, so comprise at least more than one storage battery about with or without implement charging and with or without implement electric discharge information.
Particularly when decentralized power s and storage battery coexist, the equipment be arranged in demand user 1 (101) comprises at least more than one decentralized power s and more than one storage battery, and such information is sent to electric power data relay station 104.
More preferably situation is, in order to only implement process when opposite tide occurs, state information record measures the information during opposite tide electricity, sends to electric power data relay station 104.Or, when the state information of the equipment during measuring opposite tide cannot be obtained, also opposite tide electricity can not be sent to electric power data relay station 104.In addition, when the state information of the described equipment during measuring opposite tide cannot be obtained, also the opposite tide magnitude of current can be set to 0 to send to electric power data relay station 104.
Fig. 3 (a) represents the table of the data of preserving in the DB1042 such as electric quantity data.Via the receiving elements such as electric quantity data 1041 receive send from demand user 1 (101), demand user 2 (102), demand user 3 (103), for identifying the demand user ID of each demand user, fair tide electricity, opposite tide electricity, solar power generation electricity, accumulator cell charging and discharging electricity put aside preservation.In the table shown in Fig. 3 (a), illustrating the example by putting aside electricity every month, there are 3 required users, having put aside the data measured in October, 2009 and in November, 2009.
With reference to the savings data of the DB1042 such as electric quantity data in adjustment electricity computing unit 1043, calculate adjustment opposite tide electricity by predetermined algorithm.This result of calculation, as shown in Fig. 3 (b), is stored as DB1042 such as electric quantity datas.Adjustment opposite tide electricity to be sent to be arranged on via communication network 107 and to gather server 1051 in electric power data accumulation hub 105 by Use Adjustment electricity transmitting element 1044.According to gathering the electricity gathered in server 1051, calculating the electricity charge in the future and this electricity charge are being asked to each demand user.
Fig. 4 represents an example of the calculation procedure of the adjustment opposite tide electricity performed by adjustment electricity computing unit 1043.
When calculate certain demand user certain during adjustment opposite tide electricity time, judges accumulator cell charging and discharging electricity during this period whether as on the occasion of (charge ratio is discharged many).At this, in Fig. 3 (a), being just when storage battery 1013 charges, is negative such define symbol when storage battery 1013 discharges.Such as when demand user ID 001, measurement date-time 2009/10 of Fig. 3 (b), accumulator cell charging and discharging electricity is-150kwh, is therefore electric discharge, becomes " being (YES) " (step 4001).
If accumulator cell charging and discharging amount be on the occasion of, then in opposite tide electricity, comprise battery discharging electricity, the value therefore obtained deducting battery discharging electricity from opposite tide electricity is set to adjustment opposite tide electricity.At this, in Fig. 3 (a), represent electric discharge with negative sign, therefore as computing, become " opposite tide electricity "+" accumulator cell charging and discharging electricity (negative value) ", that is, adjustment opposite tide electricity is set to the value adding battery discharging electricity gained on opposite tide electricity.Such as when demand user ID 001, measurement date-time 2009/10 of Fig. 3 (a), adjustment opposite tide electricity is set to 200+ (-150)=50 (steps 4002).
If accumulator cell charging and discharging amount be not on the occasion of, then in opposite tide electricity, do not comprise battery discharging electricity, therefore, adjustment opposite tide electricity be set to opposite tide electricity (step 4003).
Then, judge that whether solar power generation electricity is fewer than adjustment opposite tide electricity.This be due to, such as when electric automobile is connected with demand user 1 (101), supply electric power from electric automobile to demand user 1 (101), or the generation power of fuel cell is interim or when flowing into inducting, exceed solar power generation electricity and produce opposite tide electric power.Such as when demand user ID 001, measurement date-time 2009/10 of Fig. 3 (a), 50kwh is less than solar power generation electricity 100kwh for adjustment opposite tide electricity, therefore not think it is above-mentioned state, be judged to be " no (NO) " (step 4004).
If solar power generation electricity is less than adjustment opposite tide electricity, then adjustment opposite tide electricity is set to solar power generation electricity.Such as when demand user ID 001, measurement date-time 2009/10 of Fig. 3 (a), be set to obtained adjustment opposite tide electricity 50kwh.This operation result is stored in the DB1042 such as electric quantity data (step 4005) as Fig. 3 (b).
As another example, the situation of explanation demand user ID 003, measurement date-time 2009/11 in Fig. 3 (a).In step 4001, accumulator cell charging and discharging electricity is 100kwh, for just, is representing charging, therefore proceeds to step 4003, arranging opposite tide electricity 350kwh as adjustment opposite tide electricity.
In step 4004,350kwh is larger than solar power generation electricity 300kwh for adjustment opposite tide electricity, and conditional becomes " being (YES) ", therefore proceeds to step 4005.
In step 4005, adjustment opposite tide electricity is set to solar power generation electricity 300kwh.This value, as the data shown in Fig. 3 (b), is stored in the DB1042 such as electric quantity data.
By so calculating adjustment opposite tide electricity, the electricity produced by solar power generation in opposite tide electric power can be calculated.
By so adjusting opposite tide electricity, and this adjustment opposite tide electric power being sent to electric power data accumulation hub, the generation power of solar energy can be bought with predetermined buying rate.
In addition, in the present embodiment, in electric power data relay station, calculate adjustment opposite tide electric power, but also can implement the calculating of adjustment sale of electricity electric power in electric power data accumulation hub side.Now, demand is sent to electric power data accumulation hub side each electricity sent from demand user.
In addition, in the present embodiment, communication network 106 and communication network 107 become different network configurations, but also can consist of common communication network.
In addition, in the present embodiment, in electric power data relay station, adjustment opposite tide electric power is calculated, but also can in the indoor enforcement computing of demand.
In addition, in the present embodiment, in the both sides of decentralized power s and storage battery, be provided with voltameter, but also can use under the state that only voltameter is set in decentralized power s.In this case, the generating electricity of the decentralized power s of interim savings is also regarded as the energy output of decentralized power s.
In addition, the charge/discharge electricity amount meter of storage battery can be only determine whether the transducer implementing discharge and recharge.In this case, during measuring, there is the opposite tide during electric discharge of storage battery to be all considered as the discharged power of storage battery.
In addition, in the present embodiment, all the time the generating electricity of decentralized power s is sent to electric power data relay station with fair tide electricity with the charge/discharge electricity amount of storage battery together with opposite tide electricity, but, also only can send the generating electricity of decentralized power s and the charge/discharge electricity amount of storage battery when measuring opposite tide electricity.In this case, sent data volume can be cut down.
In addition, when the charge/discharge electricity amount of the generating electricity of decentralized power s and storage battery cannot be obtained for a certain reason, opposite tide electricity can not be sent to relay station, or opposite tide electricity is set to 0 to send to relay station.The devious conduct of demand user can be prevented thus.
Second embodiment is described.Only the part different from the first embodiment is described in a second embodiment.Other parts are identical with the first embodiment, therefore omit the description.
In a second embodiment, as shown in Figure 5, in demand user 1 (101), be provided with the DB5042 such as electric quantity data and adjustment electricity computing unit 5043.DB1042 such as the electric quantity data of respective function and the first embodiment and to adjust electricity computing unit 1043 identical.But adjustment opposite tide electricity, as shown in Figure 6 by temporary control and education, is sent to electric power data accumulation hub 105 via electric quantity data receiving element by data.
The feature of above the present embodiment is arranged, have in demand user: solar panel, be the electric power conversion unit of alternating current by the DC power conversion exported from solar panel, electricity accumulating unit, be the electric power conversion unit of alternating current by the DC power conversion of electricity accumulating unit discharge and recharge, measure the opposite tide electrical measurement unit head tide flowing to the electricity of industrial electrical systems, measure the fair tide electrical measurement unit from the electricity of industrial electrical systems fair tide, measure the electric power storage value charge/discharge electricity amount measuring unit from the electric power of electricity accumulating unit, measure the solar power generation phasor measurement unit of the electric power of solar panel generating, by the opposite tide electricity that above-mentioned each measuring unit is measured, fair tide electricity, accumulator cell charging and discharging electricity and solar power generation electricity are sent to the electric quantity data transmitting element of electric power data relay station.Have in electric power data relay station: receive the electric quantity data receiving element of the electricity sent from each demand user, electric quantity data received by record electric quantity data DB, change the adjustment electricity computing unit of electric quantity data according to the pre-arranged procedure, adjustment electricity be sent to the adjustment electricity transmitting element of electric power data accumulation hub.Above-mentioned electric quantity data is sent to electric power data relay station from demand user, in electric power data relay station, when calculating the opposite tide electric power of each demand user, calculate the electricity deduct battery discharging electricity from opposite tide electricity after, when this electricity ratio solar power generation amount is many, solar power generation amount is set to adjustment opposite tide electricity, when this electricity ratio solar power generation amount is few, the value of itself is set to adjustment opposite tide electricity, sends to and gather server.
Adjustment opposite tide electricity, it is the electricity bought by Utilities Electric Co. as the electric power produced by solar energy, the electric discharge from storage battery can be thought with the difference of original opposite tide electricity, therefore can rest in this demand user by sale of electricity electricity that solar energy produces.
Like this, can gather server side and learn the content of opposite tide electric power, therefore, Utilities Electric Co. etc. can carry out arranging the Additional Services such as the buying rate corresponding with content.
In addition, propose and carry out discharge and recharge to relax the method for the variation of the natural energy resources outputs such as solar power generation from storage battery, the system utilizing the storage battery arranged in demand user side to carry out the charging for night electricity can be built.
In addition, the means sending the measurement data of demand user side also can utilize automatic look-up table system or AIM.
In this case, implement the computing of adjustment opposite tide electricity in demand user side, send adjustment opposite tide electricity as opposite tide electricity, do not change existing automatic look-up table system or AIM thus, just can carry out the dealing of reliable solar electric power.
The unit possessing the unit of the energy output measuring solar cell, measure the unit of the discharge and recharge of storage battery, the measurement data of the fair tide of demand user, opposite tide electricity be sent to together the unit of electric power data relay station, adjust opposite tide electricity at electric power data relay station, in order to estimate the energy output of the solar cell in opposite tide electricity, the discharge capacity of storage battery can be deducted, and then the part of the energy output not exceeding solar cell is judged as the energy output of solar cell.
Therefore, it is possible to the discharge and recharge from storage battery is used for system stabilization, grasp the energy output of the solar cell in opposite tide electricity simultaneously.
Claims (14)
1. an electricity arithmetic unit, is characterized in that,
Have:
Input part, its input from the power wiring of demand user be supplied to electric power system opposite tide electricity, be supplied to the renewable electricity of the power wiring of described demand user from renewable energy power generation machine and be supplied to the accumulator electric-quantity of power wiring of described demand user from storage battery; And
Electricity operational part, when renewable electricity is large described in its electricity ratio calculated deducting described accumulator electric-quantity from described opposite tide electricity, makes adjustment opposite tide electricity with described renewable electricity for the upper limit.
2. electricity arithmetic unit according to claim 1, is characterized in that,
The electricity obtained deducting described accumulator electric-quantity from described opposite tide electricity and described renewable electricity compare, and a less side is estimated as described adjustment opposite tide electricity.
3. electricity arithmetic unit according to claim 1, is characterized in that,
Described renewable energy power generation machine is solar generator.
4. electricity arithmetic unit according to claim 3, is characterized in that,
Have obtain during measuring described opposite tide electricity, be arranged on the unit of demand by the state information of indoor more than one equipment, the state information of described equipment and consumes power and opposite tide electricity are recorded explicitly and send.
5. electricity arithmetic unit according to claim 4, is characterized in that,
Being arranged in the state information of described demand with indoor more than one equipment, at least comprise the generating electricity of more than one decentralized power s.
6. electricity arithmetic unit according to claim 5, is characterized in that,
Be arranged on described demand at least comprises more than one storage battery charge capacity and discharge electricity amount by the state information of indoor more than one equipment.
7. electricity arithmetic unit according to claim 6, is characterized in that,
Be arranged on the described demand state information of indoor more than one equipment at least to comprise and to implement with the presence or absence of more than one storage battery to charge and with or without implementing relevant information of discharging.
8. electricity arithmetic unit according to claim 1, is characterized in that,
Be arranged on the indoor equipment of described demand and at least comprise more than one decentralized power s and more than one storage battery.
9. electricity arithmetic unit according to claim 8, is characterized in that,
Recording and sending is carried out to the state information of the described equipment measured during described opposite tide electricity.
10. electricity arithmetic unit according to claim 8, is characterized in that,
When the state information of the described equipment measured during opposite tide electricity cannot be obtained, do not send opposite tide electricity to server.
11. electricity arithmetic units according to claim 6, is characterized in that,
When the state information of the described equipment measured during opposite tide electricity cannot be obtained, opposite tide electricity is set to 0, is sent to server.
12. 1 kinds of electricity calculation servers, is characterized in that,
There is electricity calculating machine, this electricity calculating machine is supplied to the opposite tide electricity of electric power system from the power wiring of demand user via network reception, the renewable electricity of the power wiring of described demand user is supplied to from renewable energy power generation machine, and the accumulator electric-quantity of power wiring of described demand user is supplied to from storage battery, when the described renewable electricity that the electricity ratio calculated receives when deducting the described accumulator electric-quantity received from the described opposite tide electricity received is large, the adjustment opposite tide electricity received with the described renewable electricity received for the upper limit.
13. 1 kinds of power measurement systems, is characterized in that having:
Demand client server, its send from the power wiring of demand user be supplied to electric power system opposite tide electricity, be supplied to the renewable electricity of the power wiring of described demand user from renewable energy power generation machine and be supplied to the accumulator electric-quantity of power wiring of described demand user from storage battery; And
Electricity calculation server, it is via opposite tide electricity, described renewable electricity and described accumulator electric-quantity described in network reception, and when the described renewable electricity that the electricity ratio calculated receives when deducting the described accumulator electric-quantity received from the described opposite tide electricity received is large, the adjustment opposite tide electricity received with the described renewable electricity received for the upper limit.
14. 1 kinds of electric quantity computing methods, is characterized in that,
According to the power wiring from demand user be supplied to electric power system opposite tide electricity, be supplied to the renewable electricity of the power wiring of described demand user from renewable energy power generation machine and be supplied to the accumulator electric-quantity of power wiring of described demand user from storage battery, when renewable electricity is large described in the electricity ratio calculated when deducting described accumulator electric-quantity from described opposite tide electricity, make adjustment opposite tide electricity with described renewable electricity for the upper limit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010220246A JP5380413B2 (en) | 2010-09-30 | 2010-09-30 | Electric energy calculation device, electric energy calculation server, electric energy calculation system, and electric energy calculation method |
| JP2010-220246 | 2010-09-30 |
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| CN102447307A CN102447307A (en) | 2012-05-09 |
| CN102447307B true CN102447307B (en) | 2015-11-25 |
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| CN201110245418.5A Expired - Fee Related CN102447307B (en) | 2010-09-30 | 2011-08-22 | Electricity arithmetic unit, electricity calculation server, electricity arithmetic system and electric quantity computing method |
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| CN (1) | CN102447307B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6082565B2 (en) * | 2012-10-18 | 2017-02-15 | 株式会社アイケイエス | Distributed power system |
| WO2014068738A1 (en) * | 2012-10-31 | 2014-05-08 | Ｊｆｅエンジニアリング株式会社 | Quick charger |
| US9793723B2 (en) * | 2012-11-19 | 2017-10-17 | Hitachi, Ltd. | Storage battery control device and storage battery control method |
| CN104144183B (en) * | 2013-05-08 | 2018-11-02 | 株式会社日立制作所 | The management method of data center systems and data center systems |
| JP6372291B2 (en) * | 2014-10-08 | 2018-08-15 | 株式会社明電舎 | Grid interconnection system and method for controlling grid interconnection system |
| JP6447536B2 (en) * | 2016-02-25 | 2019-01-09 | オムロン株式会社 | Reverse power flow management device, reverse power flow management system, reverse power flow management method, and reverse power flow management program |
| KR101796669B1 (en) * | 2016-12-21 | 2017-11-10 | 재단법인 녹색에너지연구원 | System and method for operating microgrid |
| JP6809306B2 (en) * | 2017-03-13 | 2021-01-06 | オムロン株式会社 | Power conditioner and switch controller |
| JP6854703B2 (en) * | 2017-05-24 | 2021-04-07 | 河村電器産業株式会社 | Power metering device |
| CN110070230B (en) * | 2019-04-25 | 2021-06-22 | 广东电网有限责任公司电力调度控制中心 | Local power grid unit cell electric quantity evaluation calculation method and device and storage medium |
| JP7307645B2 (en) * | 2019-09-26 | 2023-07-12 | 京セラ株式会社 | Power management system and power management method |
| JP2021158784A (en) * | 2020-03-26 | 2021-10-07 | 大阪瓦斯株式会社 | Photovoltaic power generation system |
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| CN101820175A (en) * | 2009-02-26 | 2010-09-01 | 三洋电机株式会社 | System's grid-connecting apparatus and electric power system |
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| JP2012075297A (en) | 2012-04-12 |
| CN102447307A (en) | 2012-05-09 |
| JP5380413B2 (en) | 2014-01-08 |
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