CN104967136A - Energy storage system based on novel peak load shifting controller - Google Patents
Energy storage system based on novel peak load shifting controller Download PDFInfo
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- CN104967136A CN104967136A CN201510405570.3A CN201510405570A CN104967136A CN 104967136 A CN104967136 A CN 104967136A CN 201510405570 A CN201510405570 A CN 201510405570A CN 104967136 A CN104967136 A CN 104967136A
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Abstract
The invention discloses an energy storage system based on a novel peak load shifting controller. The energy storage system comprises the peak load shifting controller, a battery current sampling circuit and a battery voltage sampling circuit. The peak load shifting controller is arranged between an AC input part and a switching power supply system. AC input of the switching power supply system is disconnected by the peak load shifting controller during a peak electricity price period under the premise of ensuring reliable load power supply so as to force a battery to discharge to the load; and AC input of the switching power supply system is connected during a valley electricity price period and the switching power supply system recovers normal working and charges the battery and discharges to the load so that an objective of peak load shifting can be achieved. The objective of discharging of the battery during the peak electricity price period and charging during the valley electricity price period can be achieved without controlling or upgrading the switching power supply system so that the objective of peak load shifting can be achieved, control and management units are independent of the switching power supply system, the peak load shifting control system is practicable and an objective of power energy storage can also be achieved.
Description
Technical field
The present invention relates to electric power management of power use field, be specifically related to the energy-storage system based on a kind of novel peak load shifting controller.
Background technology
Electric power need for electricity domestic is at present increasing, but, domestic electricity needs management is still in the more rudimentary stage, in order to scientific utilization of electricity, ordered electric, electrical energy saving can be realized, improve the efficiency of electric power electricity consumption, to reach the object of energy-conserving and environment-protective, department of State Grid introduces step price strategy, adopts time-of-use tariffs to regulate the electricity consumption behavior of power consumer.
DC power system by exchanging input, switch power supply system, storage battery, the several part of load form, the mode of storage battery battery in support uses, and when after interchange input dead electricity, storage battery can the normal operation of proof load.Because China's mains supply is all right, alternating current is highly stable, and storage battery long-term work, at floating charge state, has consumed a part of electric power in vain.Under the prerequisite of proof load reliable power supply, in order to the value of storage battery can be given full play to, a lot of power consumer, battery producer and power equipment producer are based on switch power supply system, develop the energy storage control system of " peak load shifting " one after another, mainly by increasing " peak load shifting " controlling functions in newly-increased " peak load shifting " controller indirect control switch power supply operational mode or the controller in switch power supply system, storage battery is made to become the circular flow pattern of " peak load shifting " from original floating charge power consumption pattern, improve the use value of battery, also Appropriate application electric power resource, and bring economic benefit.
Existing " peak load shifting " control program, all launch centered by switch power supply system, by control switch electric power output voltage lower than battery tension, make battery discharging, but, find in specific implementation process, the controller of switch power supply system is generally old product, this body controller of switch power supply system is difficult to increase " peak load shifting " controlling functions, and the software interface of the switch power controller of different manufacturers is not identical, newly-increased " peak load shifting " controller indirect control switch power supply operational mode, is also difficult to implement.So the current scheme by increase " peak load shifting " controlling functions in newly-increased " peak load shifting " controller indirect control switch power supply operational mode or the controller in switch power supply system is also infeasible.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of energy-storage system based on novel peak load shifting controller, without the need to by control switch power-supply system or the upgrading of switch power supply system controller, the practicable control system of " peak load shifting " function just can be realized.For this reason, the present invention is by the following technical solutions:
Based on the energy-storage system of novel peak load shifting controller, comprise that ac input division divides, switch power supply system, battery, it is characterized in that, described energy-storage system also comprises peak load shifting controller and battery current sample circuit and battery voltage sampling circuit; Described peak load shifting controller divides between switch power supply system at ac input division, the power distribution mode that peak load shifting controller is inputted by the interchange of control switch power-supply system, and realize the electric discharge of battery Critical Peak Pricing period, Pinggu rate period charges.
Described battery current sample circuit is charging current and the discharging current that peak load shifting controller gathers battery.
Described battery voltage sampling circuit is the real-time voltage that peak load shifting controller gathers battery.
Described load is the power consumption equipment of user.
Preferably, described ac input division is divided into electric power to input power supply unit, and ac input division is divided into switch power supply system to power, and switch power supply system is that battery charges, and is load supplying, and peak load shifting controller can cut off and exchange input with closed.
Preferably, described switch power supply system is power converting part, realizes changing AC energy into direct current energy; When interchange input disconnects, switch power supply system will quit work, and not to DC bus powered, battery starts to load discharge; When interchange input is closed, switch power supply system is resumed work, to battery charging with to load discharge.
Preferably, described battery is direct current energy energy storage device; The direct current energy that battery receptacle exports from Switching Power Supply, and carry out energy storage; After Switching Power Supply quits work, battery can continue to power to the load.
Preferably, described DC bus is that switch power supply system output, battery and load collect circuit.
Preferably, described peak load shifting controller comprises cpu controller, described voltage sampling circuit, described current sampling circuit, A.C. contactor, contactor control circuit.
Described peak load shifting controller is according to the real-time voltage of the charging current of the battery collected, discharging current, battery, and under the prerequisite of proof load reliable power supply, the Critical Peak Pricing period, the interchange input of cut-off switch power-supply system, forces battery to load discharge; Pinggu rate period, the interchange input of Closing Switch power-supply system, switch power supply system recovers normal work, to battery charging and load discharge.
The present invention proposes a kind of energy-storage system based on novel peak load shifting controller, the present invention designs a kind of being embedded in and exchanges the input peak load shifting controller middle with switch power supply system, under the prerequisite of the system of guarantee reliability service, according to rate period, control the on off operating mode of A.C. contactor, the charge or discharge of indirect control battery, thus reach the object of electric power electricity consumption being carried out to peak load shifting, the present invention is without the need to upgrading by control switch power-supply system or switch power supply system controller, just can realize the function of " peak load shifting ", control and management unit is independent of outside switch power supply system, it is a kind of practicable peak load shifting control system, reach the object of power energy storage simultaneously.
Accompanying drawing explanation
Fig. 1 is system schematic of the present invention.
Fig. 2 is the schematic block diagram of peak load shifting controller.
Embodiment
Following execution mode for illustration of the present invention, but is not used for limiting the scope of the invention.Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail:
Mentality of designing of the present invention is: design is a kind of without the need to being upgraded by control switch power-supply system or switch power supply system controller, just can realize the practicable control system of " peak load shifting " function, comprise several parts such as exchanging input, peak load shifting controller, switch power supply system, battery, load, battery current sampling and battery voltage sampling.
Energy-storage system based on novel peak load shifting controller provided by the present invention, comprises that ac input division divides, switch power supply system, battery, and described energy-storage system also comprises peak load shifting controller and battery current sample circuit and battery voltage sampling circuit; The power distribution mode that peak load shifting controller is inputted by the interchange of control switch power-supply system, realize the electric discharge of battery Critical Peak Pricing period, Pinggu rate period charges; Described peak load shifting controller divides between switch power supply system at ac input division, and peak load shifting controller is under the prerequisite of proof load reliable power supply, and the Critical Peak Pricing period, the interchange input of cut-off switch power-supply system, forces battery to load discharge; Pinggu rate period, the interchange input of Closing Switch power-supply system, switch power supply system recovers normal work, to battery charging and load discharge, thus reaches the object of peak load shifting.
Described load is the power consumption equipment of user.
Described ac input division is divided into electric power to input power supply unit, and ac input division is divided into switch power supply system to power, and switch power supply system is that battery charges, and is load supplying, and peak load shifting controller can cut off and exchange input with closed.
Described switch power supply system is power converting part, realizes changing AC energy into direct current energy; When interchange input disconnects, switch power supply system will quit work, and not to DC bus powered, battery starts to load discharge; When interchange input is closed, switch power supply system is resumed work, to battery charging with to load discharge.
Described battery is direct current energy energy storage device; The direct current energy that battery receptacle exports from Switching Power Supply, and carry out energy storage; After Switching Power Supply quits work, battery can continue to power to the load.
Described battery current sample circuit is charging current and the discharging current that peak load shifting controller gathers battery.
Described battery voltage sampling circuit is the real-time voltage that peak load shifting controller gathers battery.
Described DC bus is that switch power supply system output, battery and load collect circuit.
Described peak load shifting controller comprises cpu controller, voltage sampling circuit, current sampling circuit, A.C. contactor, contactor control circuit.Voltage sampling circuit, current sampling circuit are connected with cpu controller, and cpu controller is connected with A.C. contactor by contactor control circuit, and A.C. contactor is connected in ac input division and divides between switch power supply system.Wherein:
A.C. contactor S1 controls the closed and disconnected exchanging input.
Contactor control circuit S2 is cpu controller and A.C. contactor connecting circuit.
Cpu controller S3 is key control unit, gathers voltage, current signal, and sends contactor control signal.
Voltage sampling circuit S4 is the modulate circuit of voltage signal, external voltage signal is converted to the signal that cpu controller can identify.
Current sampling circuit S5 is the modulate circuit of current signal, foreign current signal is converted to the signal that cpu controller can identify.
Cpu controller sends the adhesive of A.C. contactor according to Critical Peak Pricing period, Pinggu rate period and disconnects control signal.
Cpu controller is by collection cell voltage and battery current signal, and decision-making system reliability of operation, as the important evidence that peak load shifting controls.
The concrete implementation step of peak load shifting controller is as follows:
P1: peak load shifting controller be embedded in ac input division divide with switch power supply system in the middle of.
P2: peak load shifting controller gathers battery charge and discharging current.
P3: peak load shifting controller gathers battery real-time voltage.
P4: peak load shifting controller outputs control signals to A.C. contactor control coil.
P5: peak load shifting controller, according to the battery current gathered, calculates battery capacity in real time.
P6: the cell voltage of peak load shifting controller according to collection and the battery capacity of calculating, judges the state that present battery runs.
P7: the timing definition of peak load shifting controller pre-stored spike period, Pinggu period, spike period disconnection A.C. contactor, Pinggu period close A.C. contactor.
P8: when battery capacity is lower than lower limit, peak load shifting controller controls A.C. contactor and closes.
P9: when cell voltage is lower than lower limit, peak load shifting controller controls A.C. contactor and closes.
P10: peak load shifting controller operational factor artificially can be configured by display interface or daemon software.
Claims (10)
1. based on the energy-storage system of novel peak load shifting controller, comprise that ac input division divides, switch power supply system, battery, it is characterized in that, described energy-storage system also comprises peak load shifting controller and battery current sample circuit and battery voltage sampling circuit; Described peak load shifting controller divides between switch power supply system at ac input division, the power distribution mode that peak load shifting controller is inputted by the interchange of control switch power-supply system, and realize the electric discharge of battery Critical Peak Pricing period, Pinggu rate period charges.
2. as claimed in claim 1 based on the energy-storage system of novel peak load shifting controller, it is characterized in that, described ac input division is divided into electric power to input power supply unit, ac input division is divided into switch power supply system to power, switch power supply system is that battery charges, and be load supplying, peak load shifting controller can cut off and exchange input with closed.
3., as claimed in claim 1 based on the energy-storage system of novel peak load shifting controller, it is characterized in that, described switch power supply system is power converting part, realizes changing AC energy into direct current energy; When interchange input disconnects, switch power supply system will quit work, and not to DC bus powered, battery starts to load discharge; When interchange input is closed, switch power supply system is resumed work, to battery charging with to load discharge.
4., as claimed in claim 1 based on the energy-storage system of novel peak load shifting controller, it is characterized in that, described battery is direct current energy energy storage device; The direct current energy that battery receptacle exports from Switching Power Supply, and carry out energy storage; After Switching Power Supply quits work, battery can continue to power to the load.
5. as claimed in claim 1 based on the energy-storage system of novel peak load shifting controller, it is characterized in that, described battery current sample circuit is charging current and the discharging current that peak load shifting controller gathers battery.
6. as claimed in claim 1 based on the energy-storage system of novel peak load shifting controller, it is characterized in that, described battery voltage sampling circuit is the real-time voltage that peak load shifting controller gathers battery.
7., as claimed in claim 1 based on the energy-storage system of novel peak load shifting controller, it is characterized in that, described load is the power consumption equipment of user.
8. as claimed in claim 1 based on the energy-storage system of novel peak load shifting controller, it is characterized in that, described DC bus is that switch power supply system output, battery and load collect circuit.
9. as claimed in claim 1 based on the energy-storage system of novel peak load shifting controller, it is characterized in that, described peak load shifting controller comprises cpu controller, described voltage sampling circuit, described current sampling circuit, A.C. contactor, contactor control circuit.
10. as claimed in claim 1 based on the energy-storage system of novel peak load shifting controller, it is characterized in that, peak load shifting controller is according to the real-time voltage of the charging current of the battery collected, discharging current, battery, under the prerequisite of proof load reliable power supply, the Critical Peak Pricing period, the interchange input of cut-off switch power-supply system, forces battery to load discharge; Pinggu rate period, the interchange input of Closing Switch power-supply system, switch power supply system recovers normal work, to battery charging and load discharge.
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Cited By (10)
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| CN105958520A (en) * | 2016-05-24 | 2016-09-21 | 中国农业大学 | Operation control strategy for storage battery energy storage system in power distribution network |
| CN107017650A (en) * | 2017-04-24 | 2017-08-04 | 沈阳新阳光机电科技有限公司 | New-energy automobile Intelligent energy storage charging station system and its control method |
| CN107994672A (en) * | 2016-10-27 | 2018-05-04 | 深圳市雄韬电源科技股份有限公司 | There is the standby power system of energy storage |
| CN108321827A (en) * | 2018-03-15 | 2018-07-24 | 深圳市普禄科智能检测设备有限公司 | Backup battery energy storage discharge control system and method |
| CN112445175A (en) * | 2019-09-05 | 2021-03-05 | 北京双登慧峰聚能科技有限公司 | Integrated control system and control method for lead-carbon energy storage container |
| CN112531761A (en) * | 2020-12-11 | 2021-03-19 | 长沙新材料产业研究院有限公司 | Direct-current peak clipping and valley filling system, device and method |
| CN112865150A (en) * | 2021-01-12 | 2021-05-28 | 福建省泉州高速公路有限公司 | Tunnel energy-saving power supply control method based on peak clipping and valley filling strategies |
| CN113725879A (en) * | 2021-08-11 | 2021-11-30 | 重庆瑞盾科技发展有限公司 | Peak clipping and valley filling energy storage power supply system and method for stock base station |
| CN113991718A (en) * | 2021-11-19 | 2022-01-28 | 上海沪臻智能科技有限公司 | Lead-acid battery peak clipping and valley filling self-adaptive system and method |
| CN112531761B (en) * | 2020-12-11 | 2025-02-25 | 航天科工(长沙)新材料研究院有限公司 | A DC peak shaving and valley filling system, device and method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105958520A (en) * | 2016-05-24 | 2016-09-21 | 中国农业大学 | Operation control strategy for storage battery energy storage system in power distribution network |
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| CN107017650A (en) * | 2017-04-24 | 2017-08-04 | 沈阳新阳光机电科技有限公司 | New-energy automobile Intelligent energy storage charging station system and its control method |
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| CN112445175A (en) * | 2019-09-05 | 2021-03-05 | 北京双登慧峰聚能科技有限公司 | Integrated control system and control method for lead-carbon energy storage container |
| CN112531761A (en) * | 2020-12-11 | 2021-03-19 | 长沙新材料产业研究院有限公司 | Direct-current peak clipping and valley filling system, device and method |
| CN112531761B (en) * | 2020-12-11 | 2025-02-25 | 航天科工(长沙)新材料研究院有限公司 | A DC peak shaving and valley filling system, device and method |
| CN112865150A (en) * | 2021-01-12 | 2021-05-28 | 福建省泉州高速公路有限公司 | Tunnel energy-saving power supply control method based on peak clipping and valley filling strategies |
| CN113725879A (en) * | 2021-08-11 | 2021-11-30 | 重庆瑞盾科技发展有限公司 | Peak clipping and valley filling energy storage power supply system and method for stock base station |
| CN113725879B (en) * | 2021-08-11 | 2023-06-30 | 重庆瑞盾科技发展有限公司 | Peak clipping and valley filling energy storage power supply system and method for stock base station |
| CN113991718A (en) * | 2021-11-19 | 2022-01-28 | 上海沪臻智能科技有限公司 | Lead-acid battery peak clipping and valley filling self-adaptive system and method |
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Application publication date: 20151007 |