CN104852381B - Portable shelter monitoring system and battery energy storage system charge/discharge control method - Google Patents
Portable shelter monitoring system and battery energy storage system charge/discharge control method Download PDFInfo
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- CN104852381B CN104852381B CN201510283833.8A CN201510283833A CN104852381B CN 104852381 B CN104852381 B CN 104852381B CN 201510283833 A CN201510283833 A CN 201510283833A CN 104852381 B CN104852381 B CN 104852381B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/10—Flexible AC transmission systems [FACTS]
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Abstract
The invention discloses a kind of portable shelter monitoring system and battery energy storage system charge/discharge control method.The system, so as to change the no-load voltage ratio of auto-transformer to realize circuit loaded automatic voltage-regulating, lifts power distribution network terminal voltage by monitoring output side bus voltage, the load ratio bridging switch of control circuit pressure regulator.While the system monitoring battery energy storage state, battery energy storage system is controlled to be discharged in peak hours, charged during low ebb load, coordinate the operation energy consumption of energy storage two way convertor and battery energy storage system, on the one hand safe and stable, the reliability service of battery energy storage system are ensure that, the efficiency of battery energy storage system is on the other hand improved.The monitoring system realizes jointly controlling for circuit pressure regulator and battery energy storage system, has given full play to the advantage of battery energy storage system, has expanded the working range of circuit pressure regulator, has efficiently solved the problem of power distribution network terminal voltage is too low.
Description
Technical field
The present invention relates to the controlling device of voltage or method and technology field, more particularly to a kind of portable shelter monitoring system
And battery energy storage system charge/discharge control method.
Background technology
In recent years, with the fast development of China's economy, the power supply capacity and power supply quality of power distribution network are proposed more next
Higher requirement.However, because part distribution network line radius of electricity supply is long, in the case of load duty, causing circuit occur
The phenomenon of brownout, it is difficult to meet the requirement of power supply quality.
Conventional electrical distribution net modification measures mainly include upgrading or newly-built substation transformer, electric line etc., still
Distribution network transform cost is higher, in the case where load peak-valley difference is larger, easily causes that electric power resource utilization rate is low, electric grid investment effect
The low problem of benefit.
For the underproof problem of line voltage distribution, the patent document of China Patent No. 201420134372.9 discloses one kind
Distribution line automatic voltage regulator, but the pressure regulator range of regulation is limited, and range of regulation is 30%Un to the maximum, in power distribution network low-voltage
In the case of very serious, voltage boosting effect is limited.The patent document of China Patent No. 201410562452.9 discloses one kind
The mobile battery energy-storage system and its control method of ferric phosphate lithium cell, but it is substantially a kind of battery energy storage system, and
Power distribution network end low-voltage can not fundamentally be solved the problems, such as.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of portable shelter monitoring system and battery energy storage system fills
Discharge control method, the monitoring system is by monitoring in output side bus voltage and mains side voltage, the portable shelter of control
Circuit pressure regulator and battery energy storage system, so as to expand the working range of circuit pressure regulator, effectively solve power distribution network terminal voltage
Too low the problem of.
In order to solve the above technical problems, the technical solution used in the present invention is：A kind of portable shelter monitoring system, its
It is characterised by：The monitoring system includes central processing unit, human-computer interaction module, analog acquisition plate, GPRS communication modules, electricity
Source module, voltage acquisition module and current acquisition module, central processing unit pass through serial communication interface and human-computer interaction module, mould
Analog quantity collection plate, frequency converter, GPRS communication modules, regulator controller carry out two-way communication, and pass through Ethernet interface and PCS
(energy walk around system, Power Conversion System) communication, central processing unit is adopted by voltage acquisition module and electric current
Collection module gathers the three-phase voltage and three-phase current of mains side and output side bus respectively, is compared with reference voltage, controls
The load ratio bridging switch of circuit pressure regulator realizes loaded automatic voltage-regulating and controls battery energy storage system progress charge and discharge electrically operated.
Further technical scheme is：The positive and negative electrode frequency converter of analog acquisition plate and battery energy storage system is with
Central processor is communicated by serial ports, and analog acquisition plate is used for flow, pressure, temperature, the electricity for gathering battery energy storage system
Position information, and the startup, stopping and upconversion operation for passing through Frequency Converter Control electrolyte circulating pump.
Further technical scheme is：PCS is communicated by Ethernet with central processing unit, according to battery energy storage system
Charge and discharge control policy control PCS discharge and recharge operation, coordinates the operation energy consumption of PCS and battery energy storage system.
Further technical scheme is：Human-computer interaction module is communicated by serial ports with central processing unit, man-machine friendship
Mutual module is used for the human-computer interaction interface that close friend is provided for monitoring system.
Further technical scheme is：GPRS communication modules are communicated with central processing unit by serial ports, and GPRS leads to
Letter module is communicated with distant place backstage by wireless network, for for operation maintenance personnel transmitting line pressure regulator and battery energy storage system
The running status and operation information of system.
Further technical scheme is：The input terminal voltage of the power module is exchange or direct current 220V, output
For+5V ,+12V, -12V and/or+24V.
Further technical scheme is：The monitoring system also includes two-way by Ethernet interface and central processing unit
The debugging mouth of data communication.
Further technical scheme is：The human-computer interaction module is touch-screen.
The invention also discloses a kind of battery energy storage system charge/discharge control method, it is characterised in that methods described is included such as
Lower step：
1) monitoring system monitors the three-phase voltage U for exporting side bus by voltage acquisition module, as three-phase voltage U<Umin
When (minimum voltage, Minimum Voltage), battery energy storage system electric discharge operation, in energy storage SOC (state-of-charge, State of
Charge its discharge power is limited when) relatively low, until battery energy storage system SOC<SOCmin (minimum state-of-charge, Minimum
State of Charge) when stop electric discharge；As three-phase voltage U>During Umi n, battery energy storage system charge operation, in battery storage
Energy system SOC limits its charge power when higher, until battery energy storage system SOC>SOCmax (maximum state-of-charge, Maximum
State of Charge) when stop charging；
2) during battery energy storage system charge operation, charge power command value is increased step by step, when reaching charge power limit value,
Battery energy storage system is charged according to maximum charge power, it is ensured that battery energy storage system SOC is in run at high level；
3) during battery energy storage system electric discharge operation, increase discharge power command value step by step, the work(of load should be met as far as possible
Rate demand, when reaching discharge power limit value, still can not meet the power demand of load, now battery energy storage system is according to most
Big discharge power is discharged.
It is using the beneficial effect produced by above-mentioned technical proposal：The monitoring system realizes circuit pressure regulator and electricity
Jointly controlling for pond energy-storage system, has given full play to the advantage of battery energy storage system, expands the working range of circuit pressure regulator,
Efficiently solve the problem of power distribution network terminal voltage is too low.Methods described can control battery energy storage system in peak hours
Electric discharge, charges during low ebb load, coordinates the operation energy consumption of energy storage two way convertor and battery energy storage system, on the one hand ensure that electricity
Safe and stable, the reliability service of pond energy-storage system, on the other hand improve the efficiency of battery energy storage system.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the theory diagram of monitoring system of the present invention；
Fig. 2 be PT (voltage transformer, Voltage transformer) on circuit pressure regulator, CT (current transformer,
Current transformer) schematic view of the mounting position；
Fig. 3 is battery energy storage system charge/discharge control method flow chart in the present invention；
Wherein：1- mains sides, 2- outlet sides, 3- circuit pressure regulators, 4- battery energy storage systems, 5- loads.
Embodiment
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still the present invention can be with
It is different from other manner described here using other to implement, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by following public specific embodiment.
As shown in figure 1, the invention discloses a kind of portable shelter monitoring system, the monitoring system includes center and handled
Device, human-computer interaction module, analog acquisition plate, GPRS communication modules, power module, voltage acquisition module and current acquisition mould
Block, central processing unit by serial communication interface and human-computer interaction module, analog acquisition plate, frequency converter, GPRS communication modules,
Regulator controller carries out two-way communication, and is communicated by Ethernet interface with PCS, and central processing unit passes through voltage acquisition module
Gather the three-phase voltage and three-phase current of mains side and output side bus respectively with current acquisition module, compared with reference voltage
Compared with the load ratio bridging switch of control circuit pressure regulator realizes loaded automatic voltage-regulating and controls battery energy storage system to carry out discharge and recharge behaviour
Make.
The 100V or 57.73V that voltage transformation module exports PT secondary sides are converted to 5V voltage signals；Current transformation module
The 5A or 1A that CT secondary sides are exported are converted to 5V voltage signals.
Central processing unit is by serial communication interface COM0 and touch panel communication, and touch-screen shows that mains side and outlet side are female
The three-phase voltage of line, three-phase current, cell voltage, the operational factor of battery current and battery energy storage system, system alarm letter
Breath and logout, while the operation such as startup, stopping and frequency conversion of battery energy storage system electrolyte circulating pump can be carried out.
Central processing unit passes through serial communication interface COM1 and analog acquisition board communications, analog acquisition plate collection battery
The various non-electrical parameters such as flow, pressure, temperature, the current potential of energy-storage system.
Central processing unit is communicated by serial communication interface COM2 and COM3 with battery energy storage both positive and negative polarity frequency converter, control electricity
Startup, stopping and frequency conversion of pond energy-storage system electrolyte circulating pump etc. are operated.
Central processing unit, by serial communication interface COM4 and GPRS module and distant place background communication, is that operation maintenance personnel is carried
For the running status and operation information of circuit pressure regulator in portable shelter and battery energy storage system.
Central processing unit is communicated by serial communication interface COM5 with circuit regulator controller, female by gathering outlet side
The three-phase voltage of line, is compared with reference voltage, when outlet side voltage is more than (or less than) a reference value and more than allowing model
When enclosing, control load ratio bridging switch sends downshift (or upshift) instruction, so as to change the no-load voltage ratio of auto-transformer to have realized load
Automatic Regulation.
Central processing unit is communicated by Ethernet NET0 with PCS, and filling for PCS is controlled according to the three-phase voltage of output side bus
Electric discharge operation, Ethernet NET1 is the debugging interface of supervising device.
Central processing unit provides two-way control output and starts or stops heating and cooling system, it is ensured that battery energy storage system is run
Under optimal environmental condition.
Power module using standard exchange or direct current 220V input, for monitoring system provide+5V ,+12V, -12V ,+
24V supply voltages.
As shown in Fig. 2 the circuit pressure regulator 3 that heretofore described monitoring system is monitored is connected on mains side 1 and output
Between the bus of side 2, battery energy storage system 4 is connected in parallel on load side, and the power of battery energy storage system 4 and power system capacity are according to connect negative
The capacity of lotus 5 is determined.Before the three-phase voltage of PT collection mains sides 1 and the bus of outlet side 2, the CT collection access points of battery energy storage system 4,
Three-phase current after the bus of outlet side 2.
As shown in figure 3, also disclosing a kind of battery energy storage system charge/discharge control method in the present invention, it is characterised in that institute
The method of stating comprises the following steps：
1) monitoring system monitors the three-phase voltage U for exporting side bus by voltage acquisition module, as three-phase voltage U<Umin
When, battery energy storage system electric discharge operation limits its discharge power when energy storage SOC is relatively low, until battery energy storage system SOC<
Stop electric discharge during SOCmin；As three-phase voltage U>During Umin, battery energy storage system charge operation, battery energy storage system SOC compared with
Its charge power is limited when high, until battery energy storage system SOC>Stop charging during SOCmax；
2) during battery energy storage system charge operation, charge power command value is increased step by step, when reaching charge power limit value,
Battery energy storage system is charged according to maximum charge power, it is ensured that battery energy storage system SOC is in run at high level；
3) during battery energy storage system electric discharge operation, increase discharge power command value step by step, the work(of load should be met as far as possible
Rate demand, when reaching discharge power limit value, still can not meet the power demand of load, now battery energy storage system is according to most
Big discharge power is discharged.
Claims (9)
1. a kind of portable shelter monitoring system, it is characterised in that：The monitoring system includes central processing unit, man-machine interaction mould
Block, analog acquisition plate, GPRS communication modules, power module, voltage acquisition module and current acquisition module, central processing unit lead to
Serial communication interface is crossed with human-computer interaction module, analog acquisition plate, frequency converter, GPRS communication modules, regulator controller to enter
Row two-way communication, and communicated by Ethernet interface with PCS, central processing unit passes through voltage acquisition module and current acquisition module
The three-phase voltage and three-phase current of collection mains side and output side bus, are compared with reference voltage respectively, and control circuit is adjusted
The load ratio bridging switch of depressor realizes loaded automatic voltage-regulating and controls battery energy storage system progress charge and discharge electrically operated.
2. portable shelter monitoring system according to claim 1, it is characterised in that：Analog acquisition plate and battery storage
The positive and negative electrode frequency converter of energy system is communicated with central processing unit by serial ports, and analog acquisition plate is used to gather battery storage
Flow, pressure, temperature, the electrical potential information of energy system, and pass through the startup of Frequency Converter Control electrolyte circulating pump, stop and become
Frequency is operated.
3. portable shelter monitoring system according to claim 1, it is characterised in that：PCS passes through Ethernet and centre
Device communication is managed, is run according to the charge and discharge control policy control PCS of battery energy storage system discharge and recharge, coordinates PCS and battery storage
The operation energy consumption of energy system.
4. portable shelter monitoring system according to claim 1, it is characterised in that：Human-computer interaction module by serial ports with
Central processing unit is communicated, and human-computer interaction module is used for the human-computer interaction interface that close friend is provided for monitoring system.
5. portable shelter monitoring system according to claim 1, it is characterised in that：GPRS communication modules are handled with center
Device is communicated by serial ports, and GPRS communication modules are communicated with distant place backstage by wireless network, for for operation maintenance personnel
The running status and operation information of transmitting line pressure regulator and battery energy storage system.
6. portable shelter monitoring system according to claim 1, it is characterised in that：The input electricity of the power module
Press for exchange or direct current 220V, be output as+5V ,+12V, -12V and/or+24V.
7. portable shelter monitoring system according to claim 1, it is characterised in that：The monitoring system also includes passing through
The debugging mouth of Ethernet interface and central processing unit bidirectional data communication.
8. portable shelter monitoring system according to claim 1, it is characterised in that：The human-computer interaction module is touch
Screen.
9. a kind of battery energy storage system charge/discharge control method, it is characterised in that methods described comprises the following steps：
1）Monitoring system monitors the three-phase voltage U of the output side bus of power distribution network by voltage acquisition module, as three-phase voltage U<
During Umin, battery energy storage system electric discharge operation limits its discharge power when energy storage SOC is relatively low, until battery energy storage system SOC
<Stop electric discharge during SOCmin；As three-phase voltage U>During Umin, battery energy storage system charge operation, battery energy storage system SOC compared with
Its charge power is limited when high, until battery energy storage system SOC>Stop charging during SOCmax；
2）During battery energy storage system charge operation, increase charge power command value, when reaching charge power limit value, battery step by step
Energy-storage system is charged according to maximum charge power, it is ensured that battery energy storage system SOC is in run at high level；
3）During battery energy storage system electric discharge operation, increase discharge power command value step by step, the power need of load should be met as far as possible
Ask, when reaching discharge power limit value, still can not meet the power demand of load, now battery energy storage system is put according to maximum
Electrical power is discharged.
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| CN201510283833.8A CN104852381B (en) | 2015-05-29 | 2015-05-29 | Portable shelter monitoring system and battery energy storage system charge/discharge control method |
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| CN105811442B (en) * | 2015-09-14 | 2019-01-29 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of electrification access device of Mobile energy storage system grid connection 10kV route |
| CN109814633B (en) * | 2017-11-20 | 2024-05-31 | 国网内蒙古东部电力有限公司电力科学研究院 | Extra-high voltage transformer cooler control circuit and control method thereof |
| US10734821B2 (en) * | 2018-03-08 | 2020-08-04 | Saudi Arabian Oil Company | Power control system |
| CN109586355A (en) * | 2018-10-25 | 2019-04-05 | 深圳市科陆电子科技股份有限公司 | Battery power limit guard method and device |
| CN114237108B (en) * | 2021-12-10 | 2024-10-15 | 深圳市集电电力科技有限公司 | Control system of power distribution terminal energy storage system |
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| CN202210682U (en) * | 2011-09-01 | 2012-05-02 | 西安森宝电气工程有限公司 | Vacuum tapping-off voltage-adjusting wattless automatic compensation integrated device |
| CN202372629U (en) * | 2011-11-03 | 2012-08-08 | 国网电力科学研究院武汉南瑞有限责任公司 | Energy-saving movable detection evaluation device for all-vanadium redox flow battery |
| CN103630783B (en) * | 2013-11-29 | 2016-05-04 | 广州供电局有限公司 | Transformer ' s type equipment moving formula checkout gear |
| CN203813439U (en) * | 2014-03-24 | 2014-09-03 | 西安森宝电气工程有限公司 | Automatic voltage regulator of distribution line |
| CN204009877U (en) * | 2014-06-11 | 2014-12-10 | 国网山西省电力公司电力科学研究院 | A kind of integrated data collection and control device |
| CN104124916B (en) * | 2014-06-30 | 2016-09-14 | 国家电网公司 | High aititude photovoltaic plant electric network fault simulated testing system mobile detection apparatus |
| CN204597484U (en) * | 2015-05-29 | 2015-08-26 | 国网电力科学研究院武汉南瑞有限责任公司 | Portable shelter supervisory control system |
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Inventor after: Li Aikui Inventor after: Wang Wei Inventor after: Jiang Guoyi Inventor after: Liu Haibo Inventor after: Xiao Bing Inventor after: Liu Fei Inventor after: Yuan Xiaodong Inventor before: Li Aikui Inventor before: Wang Wei Inventor before: Jiang Guoyi Inventor before: Liu Haibo Inventor before: Xiao Bing Inventor before: Liu Fei |
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Effective date of registration: 20160627 Address after: 430074 Hubei city of Wuhan province Wuchang Luo Yu Road, No. 143 Applicant after: Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute Applicant after: STATE GRID INNER MONGOLIA EASTERN POWER CO., LTD. Applicant after: Electric Power Research Institute of Jiangsu Electric Power Company Address before: 430074 Hubei Province, Wuhan city Hongshan District Luoyu Road No. 143 Applicant before: Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute Applicant before: STATE GRID INNER MONGOLIA EASTERN POWER CO., LTD. |
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