CN103441519B - Building energy storage emergence energy-saving system - Google Patents
Building energy storage emergence energy-saving system Download PDFInfo
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- CN103441519B CN103441519B CN201310387634.2A CN201310387634A CN103441519B CN 103441519 B CN103441519 B CN 103441519B CN 201310387634 A CN201310387634 A CN 201310387634A CN 103441519 B CN103441519 B CN 103441519B
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Abstract
A building energy storage emergency energy-saving system is composed of an energy storage system, a UPS host computer, and a management system. According to the building energy storage emergency energy-saving system, an emergence backup power supply device is operated and managed, so that the system not only has a pure emergence function, but also has additional energy-saving daily functions; a real-time state is monitored, so that emergence ability is ensured; dynamic operation and management are used for maintaining the stability of performance and prolonging service life.
Description
Technical field
The present invention relates to a kind of building energy storage to meet an urgent need energy conserving system, especially relate to and be a kind ofly mainly used in that hospital, bank, government bodies' office building etc. are architectural provides the building energy storage of emergency power supply to meet an urgent need energy conserving system to a class load.
Background technology
For ensureing the personal safety and safety of property of people, to the such as first order load such as fire protection equipment, emergency lighting, emergency lighting except providing power supply by common civil power, toward contact, UPS or EPS device is set to provide emergent back-up source, when utility power failure can not normal power supply time, be switched to and powered by emergent back-up source, thus maintain the normal use of first order load.
But the back-up power apparatus such as existing UPS or EPS exist following problem usually: the energy storage battery system in (1) UPS or EPS is in small area analysis floating charge state for a long time, cause the decline of battery performance; (2) lack the dynamic use monitoring to battery, the emergency capability state that certain moment battery can provide is often unintelligible, inaccurate, once needs Emergency use, can not well satisfy the demands, crash time short or emergent underpower; (3) except providing emergency function, back-up source is without other any function value, and do not produce any economic well-being of workers and staff, energy consumption is high.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes the above-mentioned defect that prior art exists, provides a kind of operating efficiency high, and the building energy storage that energy consumption is little is met an urgent need energy conserving system.
The technical solution adopted for the present invention to solve the technical problems is: building energy storage is met an urgent need energy conserving system, is made up of energy-storage system, UPS main frame, management system three parts.
Described energy-storage system is used for store electrical energy, in support electric energy, can not under electric power thus supplied at utility power failure, and release electric energy is out powered to load.
Energy-storage system rated capacity satisfies condition: 1.10≤energy-storage system rated capacity * (in the 1-length of service global cycle number of times * unit circle energy storage system capacity attenuation rate) * energy storage system discharges efficiency * UPS main frame energy conversion efficiency/standby is met an urgent need demand theory capacity≤2.00;
Unit circle energy storage system capacity attenuation rate=average decrease/energy-storage system initial capacity often doing a rear energy storage system capacity of charging and discharging circulation; The rated capacity of the electricity/energy-storage system of the actual releasing of energy storage system discharges efficiency=energy storage system discharges; Alternating current energy/1KWH that UPS main frame energy conversion efficiency=every 1KWH direct current energy exports through the conversion of UPS main frame; Standby meet an urgent need demand theory capacity=crash time × emergent power.
If energy-storage system rated capacity arranges too low, then can not meet emergent load power supply reliability and ensure requirement; On the contrary, if energy-storage system rated capacity arranges too high, then energy storage system initial stage input cost is too high, therefore, comprehensive both consider, can meet initial investment and emergency service functional requirement, meanwhile, the energy storage system capacity of redundancy can also use as peak regulation, produces daily peak regulation economic worth.
Described load comprises first order load (as emergency light).
Described UPS main frame is made up of rectifier, inverter, output isolation transformer, bypass static switch, inversion static switch, mainly realizes the switching of switch under the conversion of electric energy and each mode of operation; Rectifier, inverter, output isolation transformer, inversion static switch are electrically connected successively, and bypass static switch is located on the connection branch road in parallel with rectifier, inverter, output isolation transformer and inversion static switch.
Described management system comprises civil power monitoring modular, BMS monitoring modular, step price database and mode of operation decision-making module, and civil power monitoring modular, BMS monitoring modular and step price database are all electrically connected with mode of operation decision-making module; Described BMS monitoring modular is electrically connected with energy-storage system.
Described civil power monitoring modular, for monitoring the voltage, electric current, power, the power factor (PF) quality of power supply etc. of civil power;
Described BMS monitoring modular mainly monitors the voltage of energy-storage system, electric current, temperature, electriferous state SOC, health status information SOH etc.;
Step price database, stores current step price data.
Described management system is implemented to control the meet an urgent need management of energy conserving system of whole building energy storage, and the mode of operation that management system is determined by mode of operation decision-making module has: low ebb charge mode, peak discharge mode, standby mode and emergency service pattern.
The condition that must meet under low ebb charge mode has: according to step price database, (1) learns that present period is the paddy electricity stage; (2) learn that energy-storage system is normal according to BMS monitoring modular, namely meet paddy electricity charge condition, namely energy-storage system electriferous state and SOC are less than 100%, abnormal without overvoltage, excess temperature, insulation reduction etc.; (3) civil power fault-free is learnt by civil power monitoring modular; The charge efficiency * energy-storage system of the charge volume=energy-storage system under low ebb charge mode presets 30 ~ 80% of spare capacity in emergent capacity, and rate of charge is less than 1/2C, preferably 1/10C ~ 1/5C.
The condition that must meet under the discharge mode of peak has: according to step price database, (1) learns that present period is peak phase; (2) learn that energy-storage system is normal according to BMS monitoring modular, namely meet crest discharge condition, namely energy-storage system electriferous state and SOC are greater than emergent required minimum, abnormal without low pressure, excess temperature, insulation reduction etc.; (3) civil power fault-free is learnt by civil power monitoring modular; Discharge capacity under the discharge mode of peak is the charge volume of low-valley interval, and discharge-rate is less than 1/2C, preferably 1/10C ~ 1/5C.
The condition that must meet under standby mode has: (1) learns present period non-peak stage or low-valley interval according to step price database; (2) learn that energy-storage system is normal according to BMS monitoring modular, namely normal running conditions is met, namely energy-storage system electriferous state and SOC are greater than emergent required minimum, emergent required minimum electriferous state SOC=redundancy coefficient (1.10 ~ 1.20) * standby is met an urgent need demand theory capacity * energy storage system discharges efficiency * UPS main frame energy conversion efficiency/energy-storage system rated capacity), without exceptions such as low pressure, high pressure, excess temperature, insulation reductions; (3) civil power fault-free is learnt by civil power monitoring modular.
The condition that must meet under emergency service pattern has: learn utility power failure by civil power monitoring modular, cannot power to load.
Building energy storage energy conserving system of meeting an urgent need is based on the existing device of UPS or EPS, implements transformation and management operating to energy-storage system, and while maintenance energy-storage system and whole UPS or EPS emergency service function, energy-storage system carries out the peak load that disappears of civil power.
Building energy storage 30 ~ 80% of spare capacity that energy conserving system utilizes UPS or EPS to design of meeting an urgent need carries out disappearing peak load, if peak is less than 30% of spare capacity, then the economic well-being of workers and staff of peak regulation is too low; If peak is greater than 80% of spare capacity, then the economic well-being of workers and staff of peak regulation adds, but the depth of round of energy-storage battery excessive being unfavorable for increases the service life.
The present invention will meet an urgent need back-up power apparatus in addition operation and management, and become simple emergency function, additional energy-conservation daily life function, monitoring real-time status, to guarantee emergency capability, maintains the stable of performance by dynamic operation and management and increases the service life.
Compared with prior art, building energy storage provided by the present invention is met an urgent need energy conserving system, has following feature and advantage:
The first, UPS or the daily operating cost of EPS is reduced.Prior art carries out long-term floating charge to energy-storage battery, needs to consume electric energy, and the form that these electric energy generate heat often by overcharge has dissipated, and creates the cumulative cost of electricity consumption.Building energy storage energy conserving system of meeting an urgent need changes the mode of operation of long-term floating charge, decreases the consumes power of overcharge, reduces operating cost.
The second, UPS or the daily economic well-being of workers and staff of EPS is achieved.By charging in civil power paddy section, discharging at the peak period of civil power, can realize peak valley price differential to obtain income, revolutionizing can only single emergent function.
Three, improve the emergency response capabilities of UPS or EPS.Because whole system is in daily dynamic operation, the state of system can be obtained by the data analysis in day-to-day operation process, to grasp the current emergency capability of system at any time.If discovery system has exception, can take measures in time to safeguard.And original technical scheme often only carries out floating charge, support the data wretched insufficiency of analytical system discharge capability, be thus difficult to obtain the reliable accurately judgement to system, the reliability of emergency guarantee is poor.
Four, be conducive to extending system lifetim.Traditional UPS or EPS, carry out floating charge for a long time often under stand-by state to energy-storage battery, is unfavorable for the life-span of battery.Building energy storage energy conserving system of meeting an urgent need then shallowly fills shallow putting by daily, and stable state energy-storage battery being in be activated, the long-life being conducive to energy-storage battery uses.
Accompanying drawing explanation
Fig. 1 is that the energy storage of embodiment of the present invention building is met an urgent need energy conserving system structured flowchart;
Fig. 2 is that the energy storage of embodiment of the present invention building is met an urgent need energy conserving system operational decisions block diagram.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail.
With reference to Fig. 1, building energy storage energy conserving system of meeting an urgent need is made up of energy-storage system, UPS main frame, management system three parts;
Described energy-storage system is used for store electrical energy, in support electric energy, under electric power thus supplied, can not discharge and power to load at utility power failure.
Energy-storage system rated capacity satisfies condition: 1.10≤energy-storage system rated capacity * (in the 1-length of service global cycle number of times * unit circle energy storage system capacity attenuation rate) * energy storage system discharges efficiency * UPS main frame energy conversion efficiency/standby is met an urgent need demand theory capacity≤2.00.
Unit circle energy storage system capacity attenuation rate=average decrease/energy-storage system initial capacity often doing a rear energy storage system capacity of charging and discharging circulation; The rated capacity of the electricity/energy-storage system of the actual releasing of energy storage system discharges efficiency=energy storage system discharges; Alternating current energy/1KWH that UPS main frame energy conversion efficiency=every 1KWH direct current energy exports through the conversion of UPS main frame; Standby meet an urgent need demand theory capacity=crash time × emergent power.
Described load comprises first order load (as emergency light).
Described UPS main frame is made up of rectifier ZL, inverter NB, output isolation transformer SG, bypass static switch PJ, inversion static switch NJ, mainly realize the switching of switch under the conversion of electric energy and each mode of operation, rectifier ZL, inverter NB, output isolation transformer SG, inversion static switch NJ are electrically connected successively, and bypass static switch PJ is located on the connection branch road in parallel with rectifier ZL, inverter NB, output isolation transformer SG and inversion static switch NJ.
Described management system comprises civil power monitoring modular, BMS monitoring modular, step price database and mode of operation decision-making module, and civil power monitoring modular, BMS monitoring modular and step price database are all electrically connected with mode of operation decision-making module; Described BMS monitoring modular is electrically connected with energy-storage system;
In the present embodiment, rectifier ZL is by switch Q1, switch 4QF, the external civil power of switch 1QF, bypass static switch PJ is by switch Q2, switch 5QF, the external civil power of switch 1QF, inversion static switch NJ, bypass static switch PJ are all electrically connected with switch Q5, switch Q3 is provided with the branch road in parallel of bypass static switch PJ, switch Q5, UPS main frame is connected with load by switch 9 QF, and UPS main frame is electrically connected with energy-storage system by switch 12KM.
Fig. 2 is that the energy storage of embodiment of the present invention building is met an urgent need energy conserving system operational decisions block diagram.Below in conjunction with Fig. 2, various running status of the present invention and pattern are described.
Described management system is implemented to control the meet an urgent need management of energy conserving system of whole building energy storage, and the mode of operation that management system is determined by mode of operation decision-making module has: low ebb charge mode, peak discharge mode, standby mode and emergency service pattern.
Civil power monitoring modular, the quality of power supply relevant information such as voltage, electric current, power, power factor (PF) of main monitoring civil power.BMS monitoring modular, the information such as voltage, electric current, temperature, SOC, SOH of main monitoring energy-storage system.Step price database, stores current step price data.
The condition that must meet under low ebb charge mode has: according to step price database, (1) learns that present period is the paddy electricity stage; (2) learn that energy-storage system is normal according to BMS monitoring modular, namely meet paddy electricity charge condition, namely energy-storage system electriferous state and SOC are less than 100%, abnormal without overvoltage, excess temperature, insulation reduction etc.; (3) civil power fault-free is learnt by civil power monitoring modular.Under this pattern, the state of switch is: switch 1QF, switch 4QF, switch Q1, switch 12KM, switch Q5, switch 9QF are all in closure state.Realizing paddy electricity under this pattern is stored in energy-storage system, reduces electric cost, also obtain the charged state data of energy-storage system, kills two birds with one stone.The charge efficiency * energy-storage system of the charge volume=energy-storage system under low ebb charge mode presets 30 ~ 80% of spare capacity in emergent capacity, and rate of charge, for being less than 1/2C, specifically can be 1/10C ~ 1/5C.Efficiently solve because low ebb charge volume is too small, cause paddy electricity intake very little, economic well-being of workers and staff is not obvious, and charged state data obtains insufficient; Or because low ebb charge volume is excessive, energy-storage system depth of round is excessive, and cycle life is short; Or because rate of charge is excessive, energy-storage system charge efficiency declines; Or because rate of charge is too small, the defects such as UPS main frame energy conversion efficiency is low, and energy loss is large.
Peak discharge mode: the condition that must meet under this mode of operation has: according to step price database, (1) learns that present period is peak phase; (2) learn that energy-storage system is normal according to BMS monitoring modular, namely meet crest discharge condition, namely energy-storage system electriferous state and SOC are greater than emergent required minimum, abnormal without low pressure, excess temperature, insulation reduction etc.; (3) civil power fault-free is learnt by civil power monitoring modular.Under this pattern, the state of switch is: switch 4QF, switch Q1, switch 12KM, switch Q5, switch 9QF are all in closed, and switch 1QF is in off-state.Achieve the paddy electricity that will be stored in energy-storage system under this pattern, discharge in peak period, paddy electricity peak use, achieves economic well-being of workers and staff, also obtain the discharge condition data of energy-storage system, kill two birds with one stone.Discharge capacity under the discharge mode of peak is the charge volume of low-valley interval, and discharge-rate is less than 1/2C, preferably 1/10C ~ 1/5C.Efficiently solve because peak discharge capacity is too small, economic well-being of workers and staff is not obvious, and discharge condition data acquisition is insufficient; Or because of peak discharge capacity excessive, energy-storage system depth of round is excessive, and cycle life is short, and the emergency guarantee time is short; Or because discharge-rate is excessive, cycle life is short; Or because discharge-rate is too small, the defects such as UPS main frame energy conversion efficiency is low, and energy loss is large.
Standby mode: the condition that must meet under this mode of operation has: (1) learns present period non-peak stage or low-valley interval according to step price database; (2) learn that energy-storage system is normal according to BMS monitoring modular, namely normal running conditions is met, namely energy-storage system electriferous state and SOC are greater than emergent required minimum, emergent required minimum electriferous state SOC=redundancy coefficient 1.10 ~ 1.20* standby is met an urgent need demand theory capacity * energy storage system discharges efficiency * UPS main frame energy conversion efficiency/energy-storage system rated capacity, without exceptions such as low pressure, high pressure, excess temperature, insulation reductions; (3) civil power fault-free is learnt by civil power monitoring modular.Under this pattern, the state of switch is: switch 1QF, switch 4QF, switch Q1, switch Q5, switch 9QF are all in closure state, and switch 12KM is in disconnection.Under this pattern, whole system is in and prepares at any time to provide the emergency service conditions of support.
Emergency service pattern: the condition that must meet under this mode of operation has: learn utility power failure by civil power monitoring modular, cannot power to load.Under this pattern, the state of switch is: switch 4QF, switch Q1, switch Q5, switch 9QF are all in closure state, and switch 1QF, switch 12KM are all in off-state.Under this pattern, whole system is in discharge condition, and the stand-by electric energy that energy-storage system stores, through the conversion of UPS main frame, is supplied to load and uses, ensure load need for electricity.Emergency service pattern is better than other three classes mode of operation, as long as namely there is municipal power failure, whole building energy storage energy conserving system of meeting an urgent need is switched to emergency service pattern immediately to ensure load need for electricity.Under civil power non-failure conditions, then perform other three classes mode of operation.
The above is only preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvement and modification, these improve and modify and also should be considered as protection scope of the present invention.
Claims (2)
1. building energy storage is met an urgent need energy conserving system, it is characterized in that, is made up of energy-storage system, UPS main frame, management system three parts;
Described energy-storage system is used for store electrical energy, in support electric energy, can not under electric power thus supplied at utility power failure, and release electric energy is out powered to load; Energy-storage system rated capacity satisfies condition: 1.10≤energy-storage system rated capacity * (in the 1-length of service global cycle number of times * unit circle energy storage system capacity attenuation rate) * energy storage system discharges efficiency * UPS main frame energy conversion efficiency/standby is met an urgent need demand theory capacity≤2.00;
Described UPS main frame is made up of rectifier, inverter, output isolation transformer, bypass static switch, inversion static switch; Rectifier, inverter, output isolation transformer, inversion static switch are electrically connected successively, and bypass static switch is located on the connection branch road in parallel with rectifier, inverter, output isolation transformer and inversion static switch;
Described management system comprises civil power monitoring modular, BMS monitoring modular, step price database and mode of operation decision-making module, and civil power monitoring modular, BMS monitoring modular and step price database are all electrically connected with mode of operation decision-making module; Described BMS monitoring modular is electrically connected with energy-storage system;
Described civil power monitoring modular, for monitoring voltage, electric current, power, the power factor (PF) quality of power supply of civil power;
Described BMS monitoring modular mainly monitors voltage, electric current, temperature, electriferous state SOC, the health status information of energy-storage system;
Step price database, stores current step price data;
The mode of operation that described management system is determined by mode of operation decision-making module has: low ebb charge mode, peak discharge mode, standby mode and emergency service pattern;
The condition that must meet under described low ebb charge mode has: according to step price database, (1) learns that present period is the paddy electricity stage; (2) learn that energy-storage system is normal according to BMS monitoring modular, namely meet paddy electricity charge condition, namely energy-storage system electriferous state and SOC are less than 100%, reduce abnormal without overvoltage, excess temperature, insulation; (3) civil power fault-free is learnt by civil power monitoring modular; The charge efficiency * energy-storage system of the charge volume=energy-storage system under low ebb charge mode presets 30 ~ 80% of spare capacity in emergent capacity, and rate of charge is less than 1/2C;
The condition that must meet under the discharge mode of peak has: according to step price database, (1) learns that present period is peak phase; (2) learn that energy-storage system is normal according to BMS monitoring modular, namely crest discharge condition is met, namely energy-storage system electriferous state and SOC are greater than emergent required minimum, emergent required minimum electriferous state SOC=redundancy coefficient * standby is met an urgent need demand theory capacity * energy storage system discharges efficiency * UPS main frame energy conversion efficiency/energy-storage system rated capacity, the span of redundancy coefficient is 1.10 ~ 1.20, reduces abnormal without low pressure, excess temperature, insulation; (3) civil power fault-free is learnt by civil power monitoring modular; Discharge capacity under the discharge mode of peak is the charge volume of low-valley interval;
The condition that must meet under standby mode has: (1) learns present period non-peak stage or low-valley interval according to step price database; (2) learn that energy-storage system is normal according to BMS monitoring modular, namely meet normal running conditions, namely energy-storage system electriferous state and SOC are greater than emergent required minimum, reduce abnormal without low pressure, high pressure, excess temperature, insulation; (3) civil power fault-free is learnt by civil power monitoring modular;
The condition that must meet under emergency service pattern has: learn utility power failure by civil power monitoring modular, cannot power to load.
2. building energy storage according to claim 1 is met an urgent need energy conserving system, and it is characterized in that, under described low ebb charge mode in condition (3), rate of charge is 1/10C ~ 1/5C.
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| CN103683297B (en) * | 2013-12-31 | 2015-10-21 | 广东志成冠军集团有限公司 | A kind of comprehensive power quality control circuit |
| US20150329008A1 (en) * | 2014-05-15 | 2015-11-19 | GM Global Technology Operations LLC | Battery systems operable in a backup mode and related methods |
| 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 |
| CN107706935A (en) * | 2017-11-17 | 2018-02-16 | 厦门科华恒盛股份有限公司 | A kind of adaptive power control method and system of energy storage type power-supply system |
| CN109017368A (en) * | 2018-07-13 | 2018-12-18 | 彭鸿泽 | A kind of energy storage method and energy-storage system of shared distance increasing unit |
| CN111083858A (en) * | 2019-12-30 | 2020-04-28 | 山东国信电力科技有限公司 | Energy-saving control method for high-voltage sodium lamp branch system of street lamp lighting system |
| CN112054541A (en) * | 2020-08-20 | 2020-12-08 | 国网浙江省电力有限公司嘉兴供电公司 | Plug-in energy storage peak regulation device convenient to deploy and peak regulation method thereof |
| CN115579929B (en) * | 2022-11-21 | 2023-05-05 | 成都特隆美储能技术有限公司 | Control method for improving battery protection of energy storage system |
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| JP2013150461A (en) * | 2012-01-19 | 2013-08-01 | Qingzheng Lin | Power supply management device and antitheft power supply system using the same |
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