CN106941255A - Based on the distributed maintenance free intelligent d. c power-supply system of cell and its control method - Google Patents
Based on the distributed maintenance free intelligent d. c power-supply system of cell and its control method Download PDFInfo
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- CN106941255A CN106941255A CN201611039342.XA CN201611039342A CN106941255A CN 106941255 A CN106941255 A CN 106941255A CN 201611039342 A CN201611039342 A CN 201611039342A CN 106941255 A CN106941255 A CN 106941255A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
Abstract
The invention discloses one kind based on the distributed maintenance free intelligent d. c power-supply system of cell and its control method, including at least one set of battery, and the distributed maintenance module being connected with battery, distributed maintenance module is connected with intelligence control system, and intelligence control system is connected by bridging module and UPS straight-flow systems online with battery respectively；The present invention utilizes newest Power Electronic Technique and embedded technology, develops distributed intelligence charging, electric discharge, monitoring integrated module.Judge behindhand battery, dead battery is bridged out online, is held in line core.With expansible distributed module, unified backstage substitutes Traditional DC screen+battery inspection+artificial periodic maintenance pattern.Change it is traditional it is regular to storage battery checking capacity, electric discharge charge maintenance pattern there is provided it is a kind of to cell distributed on line monitoring, online equalized maintenance, online activation, hold in line core, it is online across the Implementation Technology for falling dead battery, the intelligent DC power-supply system of Monitoring Data remote transmission.
Description
【Technical field】
The invention belongs to storage batteries of transformer substation on-line monitoring area of maintenance, it is related to one kind and dimension is exempted from based on cell distribution
Protect intelligent DC power-supply system and its control method.
【Background technology】
In power industry, to ensure power system security and normal operation, a large amount of relay protection systems are mounted with, various
Automated system, communication system and various information management systems etc., and the reliability of these systems is carried with the development of power network
Higher requirement is gone out.To ensure uninterruptible power system (straight-flow system or exchange system that these systems can normally play a role
System) also it is increasingly becoming the focus of people's concern and research.And the energy core for constituting DC power system is battery.Normal fortune
In the case of row, battery is intended only as floating charge stand-by state and charger parallel running, and when exchanging dead electricity, battery is rapidly not
The electrical equipment for straight-flow system of interruption provides reliable direct current, is protection device in transformer station, automation equipment, thing
Therefore the equipment such as illumination provides power.Thus it is guaranteed that the performance of battery is stable most important to stablizing for transformer station direct current system,
It is to ensure the power source that the heart of transformer station is normally run.But battery after use after a while, it may appear that capacity
Decrease up to and failure phenomenon occur.
Current transformer station judges dead battery to the performance monitoring of battery by manual record, regular visit.Safeguard
Be manually periodic detection verification capacity, carry out charge and discharge maintenance, it is necessary to have a power failure, it is necessary to which battery is cumbersome connects to every section every time
Line, detection, record.Rewiring again is removed after detection and detects another section battery.Such detection program causes workload big,
The manpower minimum of one teams and groups that put into every time, the accumulator checking verification of a transformer station need to waste the two or three days.Therefore
Invention is a kind of to fall entirely ineffective battery, online to falling to battery progress status monitoring, the verification of online capacity, online bridging online
The need for the non-maintaining intelligent DC power-supply system of cell activation is intelligent substation afterwards.
There are problems and deficiency in the operation and maintenance of the batteries in traditional DC power system：
(1) parameter differences are further increased between batteries longtime running can make every section battery；
(2) it can only be charged by charging cabinet is unified to whole battery pack；Due to the capacity between battery, the presence of internal resistance difference,
Whole group is easy to charge to cause each monomer voltage unbalanced, in the case of long-term floating charge, and the long-term charge less of some batteries slowly vulcanizes, and has
A little batteries are overcharged and dehydration for a long time.
(3) new used batteries can not be shared, and battery parameter wants whole group to change battery when serious inconsistent, and this is not only wasted greatly,
Environmental issue can also be caused；
(4) single battery failure can cause whole group battery failure；
(5) cruising inspection system need to separately be matched somebody with somebody to improve system reliability；
(6) maintainability activation discharge etc. need to periodically be carried out.Periodically labor intensive, material resources and time are safeguarded in activation.It is domestic because
Safeguard that not in time occurring power-fail causes the case of major accident all to occur every year.
【The content of the invention】
Exempt to tie up based on cell distribution there is provided a kind of it is an object of the invention to the shortcoming for overcoming above-mentioned prior art
Protect intelligent DC power-supply system and its control method.
To reach above-mentioned purpose, the present invention is achieved using following technical scheme：
One kind is based on the distributed maintenance free intelligent d. c power-supply system of cell, including at least one set of battery, and
The distributed maintenance module being connected with battery, distributed maintenance module is connected with intelligence control system, intelligence control system point
It is not connected by bridging module and UPS straight-flow systems online with battery；Wherein：
Distributed maintenance module sends data to intelligence control system, when occur in data behindhand battery and judge can not
When being safeguarded, behindhand battery is bridged by bridging module online, replacing processing is carried out.
The present invention is further improved：
The distributed maintenance module includes monomer equalized maintenance module, monomer activation maintenance module and internal resistance detection mould
The instant messages of battery are collected and carry out inter-process by block, distributed maintenance module, judge that the information of battery judges
Its situation is analyzed, monomer equalized maintenance module and monomer activation maintenance module are sent commands to respectively, passes through monomer equalized maintenance
Module and monomer activation maintenance module on-line maintenance are realized and the distributed intelligence of battery are safeguarded.
The distributed maintenance module by RS485 communication transfers mode by all data of battery transmit in real time to
Intelligence control system, intelligence control system is presented data at the scene by way of display screen, and attendant can be stored
The inquiry of battery data, query warning content, pass through internal resistance detection module carry out inner walkway.
The intelligence control system is by ether web form by the data transfer of battery to data centralized control center, data set
Control center can monitor, store, analyzing the data of multiple websites simultaneously.
The intelligence control system is connected with UPS straight-flow systems；The control of intelligence control system control UPS straight-flow systems is opened
Close so that UPS straight-flow systems disconnect with battery, battery can carry out core by load progress electric discharge and hold experiment.
Straight-flow system alarm device access UPS straight-flow systems are scurried into the exchange, when straight-flow system has AC signal to scurry into
When, exchange scurries into straight-flow system alarm device and will appear from alarm, and warning content is sent into intelligence control system, timely enters
Row alarm notification.
A kind of control method based on the distributed maintenance free intelligent d. c power-supply system of cell, comprises the following steps：
1) voltage parameter of each cell of collection monitoring：Using direct-current discharge method to the battery less than setting float charge voltage
Interim boost charge is carried out, and is discharged to release overcharging state overcharging battery progress monomer；Ensure to protect during battery pack floating charge
Electric voltage equalization is held, every batteries is all in optimum activity state all the time, realizes equalized maintenance, be that the inner walkway of next step is carried
For uniformity platform；
2) online internal resistance measurement technical testing internal resistance of single cell is used：It is accurate to judge behindhand battery；
3) line pulse activating technology is used：It is automatic under floating charge state to provide positive and negative width to the single battery that performance falls behind
Frequency pulse current is activated online, activates crystallization and the sulfuric acid precipitation of internal storage battery battery lead plate, prevents battery because long-term
Sulfation caused by floating charge；
4) technology is held using behindhand battery discharge and recharge core：The online constant-current discharge, three stages of being carried out to behindhand battery charges；
5) technology is bridged using online battery：Online bypass is carried out to dead battery using unidirectional diode to exit；
6) electric alarm technology is altered using straight-flow system exchange：Comprehensive monitoring is carried out to straight-flow system.
Compared with prior art, the invention has the advantages that：
The above mentioned problem that the present invention exists for Traditional DC power-supply system conducts a research, and is digesting and assimilating existing electric power storage
In pond equalizaing charge technical foundation, using newest Power Electronic Technique and embedded technology, develop distributed intelligence charging, put
Electricity, monitoring integrated module.Judge behindhand battery, dead battery is bridged out online, is held in line core.With expansible distributed mould
Block, unified backstage substitutes Traditional DC screen+battery inspection+artificial periodic maintenance pattern.Change traditional regular to battery
Check capacity, electric discharge charge maintenance pattern there is provided it is a kind of to cell distributed on line monitoring, it is online equalized maintenance, online
Activate, hold, online across the technology realization side for falling dead battery, the intelligent DC power-supply system of Monitoring Data remote transmission in line core
Method.
The problem of present invention can solve the problem that single battery failure effect straight-flow system normal power supply in batteries.By dividing
Cloth monitors the internal resistance of cell, finds behindhand battery, carries out online activation and safeguards, and can bridge replacing failure electricity online
Pond, straight-flow system normal power supply is not influenceed.So as to prevent the battery open circuit phenomenon of Traditional DC thrashing battery, safety is excluded
Hidden danger.Reach that new used batteries can be used with, realize that battery is safeguarded and matched automatically, behindhand battery can bridge replacing, nothing online
It must have a power failure.Battery availability is improved, beneficial to environmental protection.The establishment of distributed on-line monitoring maintenance system, can improve dc source system
The stability of system, reliability, maintainability, are allowed to the need for meeting power network development and produce economic and social benefit.
【Brief description of the drawings】
Fig. 1 is system construction drawing；
Fig. 2 is distributed maintenance module schematic diagram.
Wherein, 1- batteries；2- distribution maintenance modules；3- intelligence control systems；4- data centralized control center；5- it is online across
Connection module；6-UPS straight-flow systems；7- monomer equalized maintenance modules；8- monomers activate maintenance module；9- internal resistance detection modules；10-
Straight-flow system alarm device is scurried into exchange.
【Embodiment】
The present invention is described in further detail below in conjunction with the accompanying drawings：
Referring to Fig. 1, the present invention has one as energy storage list based on the distributed maintenance free intelligent d. c power-supply system of cell
At least one set of battery 1 of member and the distributed distributed maintenance module 2 for safeguarding intelligent management is connected to battery 1,
Every distributed maintenance module 2 of 12 batteries correspondence one；Distributed maintenance module 2 includes monomer equalized maintenance module 7, list
Body activates maintenance module 8 and internal resistance detection module 9, and described distributed maintenance module 2 collects the instant messages of battery 1
And inter-process is carried out, judge its situation of the information discriminatory analysis of battery 1, monomer equalized maintenance module is sent commands to respectively
7 and monomer activation maintenance module 8, safeguarded by two module intelligent onlines and realize the distributed intelligence of battery 1 is safeguarded.
Distributed maintenance module 2 is connected with intelligence control system 3, and sends data to intelligence control system 3, works as data
In there is behindhand battery and judge when can not be safeguarded, behindhand battery can be bridged by bridging module 5 online, progress
Replacing is handled.
Distributed maintenance module 2 is connected with intelligence control system 3, and distributed maintenance module 2 passes through RS485 transmission side communications
Formula transmits all data of battery 1 to intelligence control system 3 in real time, and data are passed through display screen by intelligence control system 3
Mode present at the scene, attendant can carry out the inquiry of the data of battery 1, and query warning content and can pass through internal resistance
Detection module 9 carries out inner walkway.
Intelligence control system 3 is by ether web form by the data transfer of battery 1 to data centralized control center 4, data set
Control center 4 can monitor, store, analyzing the data of multiple websites simultaneously.
Intelligence control system 3 is connected with UPS straight-flow systems 6, it is necessary to which when carrying out core appearance, the control of intelligence control system 3 UPS is straight
The controlling switch of streaming system 6 so that ups power disconnects with battery 1, battery 1 can carry out electric discharge progress core appearance by loading
Experiment, understands the true capacity of battery 1.
The access UPS of straight-flow system alarm device 10 straight-flow systems 6 are scurried into exchange, when straight-flow system has AC signal to scurry into
When, exchange scurries into straight-flow system alarm device 10 and will appear from alarm, and warning content is sent into intelligence control system 3, in time
Carry out alarm notification.
The invention also discloses a kind of control method based on the distributed maintenance free intelligent d. c power-supply system of cell,
Comprise the following steps：
1) voltage parameter of each cell of collection monitoring.Using direct-current discharge method to the battery less than setting float charge voltage
(long-term charge less) carries out interim boost charge, and discharges to release overcharging state overcharging battery progress monomer；Ensure battery
Electric voltage equalization is kept during group floating charge, every batteries is all in optimum activity state all the time.Equalized maintenance is realized, is next step
Inner walkway provides uniformity platform.
2) online internal resistance measurement technical testing internal resistance of single cell is used.It is accurate to judge behindhand battery.
3) line pulse activating technology is used：It is automatic under floating charge state to provide positive and negative width to the single battery that performance falls behind
Frequency pulse current is activated online, activates crystallization and the sulfuric acid precipitation of internal storage battery battery lead plate, prevents battery because long-term
Sulfation caused by floating charge.
4) technology is held using behindhand battery discharge and recharge core：The online constant-current discharge, three stages of being carried out to behindhand battery charges.
5) technology is bridged using online battery：Online bypass is carried out to dead battery using unidirectional diode to exit.
6) electric alarm technology is altered using straight-flow system exchange, comprehensive monitoring is carried out to straight-flow system.
The present invention realizes uninterrupted, the comprehensive monitoring and maintenance of progress online to batteries.The traditional direct current of substitution
Screen, periodically accumulator checking device, artificial detection service mode.Running status and its items i.e. by monitoring battery in real time
Operational factor, is diagnosed and is carried out corresponding on-line maintenance automatically to battery pack, using the long-range remote signalling of real-time performance, remote measurement,
The intelligent accummulator monitoring maintenance-free system of remote control.
(1) major function：
(1.1) on-line real time monitoring and abnormality alarming function：
Batteries running status is monitored in real time, and group terminal voltage, charging and discharging currents, monomer voltage, monomer internal resistance, battery are born
Pole temperature, battery pack residual capacity, electric discharge sustainable time.And can set thresholding enter line overrun alarm.
(1.2) on-line automatic equalized maintenance function：
Using online monomer charge and discharge power technology, the electric voltage equalization adjustment of cell is realized automatically, makes battery cell voltage
Keep in balance state, effectively prevent that Individual cells from vulcanizing or overcharging for a long time dehydration because of long-term charge less, while behindhand battery can be eliminated
The various potential safety hazards brought.
(1.3) cell batteries bridge exit function online：
It it was found that there are indivedual behindhand batteries in battery pack, and can not repair when needing to change, be connected across using bridging treasured
Behindhand battery is bypassed and come out by battery two ends from battery pack loop afterwards, prevents that behindhand battery from influenceing other batteries, and can realize
More renew battery online.
(1.4) tested in line core appearance falling behind cell batteries：
Whole group battery capacity is determined by the minimum battery of capacity in battery pack (behindhand battery).As long as so can determine that
The cell of worst capacity in battery pack, and monomer capacity test is carried out to it, it just will appreciate that whole group battery capacity.Without from
Line
Behindhand battery is gone out by on-line monitoring system automatic decision, recycles cell core to be installed with standby progress monomer constant current
Electric discharge verification capacity.The equipment has bypass cross-over connection function, and online monomer core can be achieved and holds.
(1.5) cell batteries activate maintenance online：
Battery line pulse mobilizing function, which is that system is automatic under floating charge state, to be provided the single battery that performance falls behind
Positive negative impulse current is activated online, activate internal storage battery battery lead plate crystallization and sulfuric acid precipitation, prevent battery because
Sulfation caused by long-term floating charge, eliminates the potential safety hazard as caused by inside.
(1.6) direct current on-line monitoring and alarm function are scurried into exchange：
To prevent that the AC in the DC from triggering the serious accident of false protection, tripping and plant stand full cut-off to occur, newest electricity
Power professional standard《DL/T 1392-2014 DC power system insulation monitoring and warning device technical conditions》It is required that straight-flow system insulation prison
Survey note and warning function that DC Line Fault is scurried into exchange should be possessed by surveying device, and original Insulation Inspection Device for Direct-Current System should be progressively
Transformation makes it possess survey note and alarm function that DC Line Fault is scurried into exchange.
The technological thought of above content only to illustrate the invention, it is impossible to which protection scope of the present invention is limited with this, it is every to press
According to technological thought proposed by the present invention, any change done on the basis of technical scheme each falls within claims of the present invention
Protection domain within.
Claims (7)
1. one kind is based on the distributed maintenance free intelligent d. c power-supply system of cell, it is characterised in that including at least one set storage
Battery (1), and the distributed maintenance module (2) being connected with battery (1), distributed maintenance module (2) and Based Intelligent Control system
Uniting, (3) are connected, and intelligence control system (3) respectively by bridging module (5) and UPS straight-flow systems (6) and battery (1) phase online
Even；Wherein：
Distributed maintenance module (2) sends data to intelligence control system (3), when occurring behindhand battery in data and judge nothing
When method is safeguarded, behindhand battery is bridged by bridging module (5) online, replacing processing is carried out.
2. it is according to claim 1 based on the distributed maintenance free intelligent d. c power-supply system of cell, it is characterised in that
The distributed maintenance module (2) includes monomer equalized maintenance module (7), monomer activation maintenance module (8) and internal resistance detection mould
The instant messages of battery (1) are collected and carry out inter-process by block (9), distributed maintenance module (2), judge battery
(1) information discriminatory analysis its situation, sends commands to monomer equalized maintenance module (7) and monomer activation maintenance module respectively
(8) distribution of maintenance module (8) on-line maintenance realization to battery (1), is activated by monomer equalized maintenance module (7) and monomer
Formula intelligent maintenance.
3. it is according to claim 1 based on the distributed maintenance free intelligent d. c power-supply system of cell, it is characterised in that
The distributed maintenance module (2) is transmitted all data of battery (1) to intelligence by RS485 communication transfers mode in real time
Energy control system (3), intelligence control system (3) is presented data at the scene by way of display screen, and attendant can enter
The inquiry of row battery (1) data, query warning content, pass through internal resistance detection module (9) carry out inner walkway.
4. it is according to claim 1 based on the distributed maintenance free intelligent d. c power-supply system of cell, it is characterised in that
The intelligence control system (3) is by ether web form by the data transfer of battery (1) to data centralized control center (4), data
Centralized control center (4) can monitor, store, analyzing the data of multiple websites simultaneously.
5. it is according to claim 1 based on the distributed maintenance free intelligent d. c power-supply system of cell, it is characterised in that
The intelligence control system (3) is connected with UPS straight-flow systems (6)；The control of intelligence control system (3) control UPS straight-flow systems (6)
System switch so that UPS straight-flow systems (6) disconnect with battery (1), battery (1) can carry out electric discharge by load and carry out core
Hold experiment.
6. it is according to claim 1 based on the distributed maintenance free intelligent d. c power-supply system of cell, it is characterised in that
Straight-flow system alarm device (10) access UPS straight-flow systems (6) are scurried into the exchange, when straight-flow system has AC signal to scurry into
When, exchange scurries into straight-flow system alarm device (10) and will appear from alarm, and warning content is sent into intelligence control system (3),
Timely carry out alarm notification.
7. one kind is used described in claim 1-6 any one based on the distributed maintenance free intelligent d. c power-supply system of cell
Control method, it is characterised in that comprise the following steps：
1) voltage parameter of each cell of collection monitoring：The battery less than setting float charge voltage is carried out using direct-current discharge method
Interim boost charge, and discharge to release overcharging state overcharging battery progress monomer；Ensure to keep electricity during battery pack floating charge
Pressure is balanced, every batteries is all in optimum activity state all the time, realizes equalized maintenance, one is provided for the inner walkway of next step
Cause mild-natured；
2) online internal resistance measurement technical testing internal resistance of single cell is used：It is accurate to judge behindhand battery；
3) line pulse activating technology is used：It is automatic under floating charge state to provide positive and negative wideband arteries and veins to the single battery that performance falls behind
Rush electric current to be activated online, activate crystallization and the sulfuric acid precipitation of internal storage battery battery lead plate, prevent battery because of long-term floating charge
Caused by sulfation；
4) technology is held using behindhand battery discharge and recharge core：The online constant-current discharge, three stages of being carried out to behindhand battery charges；
5) technology is bridged using online battery：Online bypass is carried out to dead battery using unidirectional diode to exit；
6) electric alarm technology is altered using straight-flow system exchange：Comprehensive monitoring is carried out to straight-flow system.
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| CN201611039342.XA CN106941255A (en) | 2016-11-21 | 2016-11-21 | Based on the distributed maintenance free intelligent d. c power-supply system of cell and its control method |
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| CN107390131A (en) * | 2017-07-17 | 2017-11-24 | 国网黑龙江省电力有限公司电力科学研究院 | Storage batteries of transformer substation comprehensive monitor system |
| CN109358294A (en) * | 2018-12-03 | 2019-02-19 | 国网新疆电力有限公司乌鲁木齐供电公司 | Cell batteries open circuit online monitoring system |
| CN109901078A (en) * | 2019-04-18 | 2019-06-18 | 国网冀北电力有限公司承德供电公司 | Cell batteries internal resistance and temperature measuring circuit |
| CN109921103A (en) * | 2017-12-13 | 2019-06-21 | 中国电信股份有限公司 | The maintaining method and system of the maintaining method and system of battery group, battery |
| CN111342150A (en) * | 2020-02-27 | 2020-06-26 | 中国人民解放军陆军工程大学 | Centralized charging maintenance system and charging maintenance method for vehicle storage battery |
| CN112014742A (en) * | 2020-08-20 | 2020-12-01 | 国网天津市电力公司 | Battery pack framework live-line monitoring safety early warning system based on Internet of things sensing technology |
| CN113489084A (en) * | 2021-06-07 | 2021-10-08 | 华能西藏雅鲁藏布江水电开发投资有限公司 | Automatic replacement method for single storage battery |
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| CN109921103B (en) * | 2017-12-13 | 2021-05-18 | 中国电信股份有限公司 | Maintenance method and system for storage battery pack and maintenance method and system for storage battery |
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| CN109901078A (en) * | 2019-04-18 | 2019-06-18 | 国网冀北电力有限公司承德供电公司 | Cell batteries internal resistance and temperature measuring circuit |
| CN111342150A (en) * | 2020-02-27 | 2020-06-26 | 中国人民解放军陆军工程大学 | Centralized charging maintenance system and charging maintenance method for vehicle storage battery |
| CN112014742A (en) * | 2020-08-20 | 2020-12-01 | 国网天津市电力公司 | Battery pack framework live-line monitoring safety early warning system based on Internet of things sensing technology |
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