CN106786695A - Sodium-sulphur battery power station - Google Patents
Sodium-sulphur battery power station Download PDFInfo
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- CN106786695A CN106786695A CN201611222283.XA CN201611222283A CN106786695A CN 106786695 A CN106786695 A CN 106786695A CN 201611222283 A CN201611222283 A CN 201611222283A CN 106786695 A CN106786695 A CN 106786695A
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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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
- H02J15/00—Systems for storing electric energy
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Abstract
The present invention relates to a kind of sodium-sulphur battery power station, including sodium-sulfur battery energy storage device, energy conversion system, battery management system, Power Station Monitored Control System, energy storage device heap storage, power station basic platform, sodium-sulfur battery energy storage device includes some sodium sulphur energy-storage module groups, battery management system includes direct current administrative unit, battery management unit, Power Station Monitored Control System includes key-course on the spot, central control level, scheduling controlling layer, key-course includes power conversion subsystem monitoring module on the spot, battery management subsystem, on-site monitoring equipment, power information harvester, central control level includes collection control server, collection controlled switching system, collection control human-computer interaction device, scheduling controlling layer includes some scheduling controlling terminal devices, sodium sulphur energy-storage module group includes some sodium sulphur energy-storage module strings, sodium sulphur energy-storage module string includes some sodium sulphur energy-storage modules.The invention provides a kind of sodium-sulphur battery power station with practicality, directiveness, with good commercial application prospect.
Description
Technical field
The present invention relates to a kind of battery power station, more particularly to a kind of sodium-sulphur battery power station belongs to energy-accumulating power station field.
Background technology
Energy storage refers to, by medium or equipment, energy stores to be got up using chemistry or the method for physics, according to should
The process that demand discharges in particular energy form, the energy storage generally said refers to the energy storage for electric energy.Power energy storage technology
To realize power network target of sustainable development, solve the problems, such as that electricity unbalanced supply-demand contradiction and raising power supply reliability are pulled there is provided one
Sub-solution.Using large-scale energy storage device, it is possible to reduce and delay for sending out, it is defeated, become, the investment of controller switching equipment, improve
The utilization rate and power supply reliability of existing power equipment, reduce gross coal consumption rate, power supply line loss.Meanwhile, power network development also face in itself
Face electricity consumption peak-valley difference gradually to increase, electric power netting safe running risk increase after the increase of power network scale, mostly utility grid is to electric energy matter
Amount requires the problems such as rising, new-energy grid-connected running technology new demand, solves these problems and builds intelligent grid, also to development electricity
Power energy storage technology proposes urgent requirement.In every key core technology of intelligent grid, energy storage technology is started to walk relatively
There is substantially deficiency in evening, technology maturation, the country is even more and is in the starting stage, needs badly and carry forward vigorously with study on the industrialization.Energy storage
It is divided three classes according to energy-accumulating medium：The energy storage of physics energy storage, chemical energy storage and other forms.Physics energy storage mainly includes drawing water
Accumulation of energy, compressed-air energy storage, flywheel energy storage etc., chemical energy storage mainly include lead-acid battery, lithium battery, flow battery, sodium sulphur electricity
Energy storage of the battery forms such as pond, nickel-cadmium cell etc., the energy storage of other forms includes ultracapacitor, superconducting magnetic energy storage etc..
As society is to the demand of electric power and production sustainable growth, installed capacity, overlay area and load peak in power network
Paddy difference constantly expands, and such substantial amounts of electricity needs proposes requirement higher to the stability of power network, security, intellectuality.
For this in the urgent need to such electric energy storing system matches therewith, with balancing electric power load, equipment operating efficiency and warp are improved
Ji property, reduces or delays the investment of power construction, improves the adaptibility to response of power network burst accident, it is ensured that Operation of Electric Systems is pacified
Entirely.What is more important, electric energy storing system can get up intermittent regenerative resource " splicing ", improve power system
Stability, so as to solve the bottleneck problem of Renewable Energy Development.As load equalizer and stand-by power supply, power energy storage system
System be also intelligent grid and distributed energy resource system necessary to key technology, for solving, its fault rate is high, power system capacity is small, negative
The problems such as lotus fluctuation is big.
Sodium sulphur energy-storage battery (hereinafter referred to as sodium-sulphur battery) is because its capacity is big, small volume, energy storage and high conversion efficiency,
Long lifespan, without geographical restrictions the advantages of, be especially suitable for power energy storage and use.Through comprehensive comparative analysis, sodium-sulphur battery is current
One of maximum energy storage mode of energy density, power density, is currently the only one kind while being completely suitable for power-type energy storage
With the energy-storage battery of energy type energy storage.After sodium-sulphur battery occurs as a newcomer in electrochmical power source family, in the world
Upper many countries are greatly paid attention to and are developed.There are a series of features of high-energy battery due to sodium-sulphur battery, in the eighties
End and the beginning of the nineties, (such as power station energy storage) application under foreign countries give priority to sodium-sulphur battery as stationary applica-tions, and increasingly
Show its superiority.Sodium-sulphur battery has been used successfully to the stabilization of the regenerative resources such as peak load shifting, emergency power supply, wind-power electricity generation
The aspect such as output and raising power quality.Sodium-sulphur battery technology and production technology relative maturity, but sodium-sulphur battery storage at present
Can the engineering application of system lack practical experience, to sodium-sulfur battery energy storage system discharge and recharge operation characteristic, circular flow characteristic,
Running of pumps in series parallel connection characteristic etc. still lacks the understanding of practicality, and the rule of directiveness are still lacked in terms of the system design that power network is accessed
Model.
The content of the invention
Sodium-sulphur battery power station of the present invention discloses new scheme, there is provided a kind of sodium sulphur electricity with practicality, directiveness
Pond power station, solves the problems, such as that prior art lacks practical plan.
Sodium-sulphur battery power station of the present invention includes sodium-sulfur battery energy storage device, energy conversion system, battery management system, power station
Monitoring system, energy storage device heap storage, power station basic platform, sodium-sulfur battery energy storage device include some sodium sulphur energy-storage module groups, sodium
Sulphur energy-storage module group is connected by energy conversion system with power network bus, and battery management system includes direct current administrative unit, battery
Administrative unit, direct current administrative unit is arranged on confluxes in cabinet, and Power Station Monitored Control System includes key-course, central control level, tune on the spot
Degree key-course, on the spot key-course and central control level communication connection, central control level and scheduling controlling layer communication connection, control on the spot
Preparative layer includes power conversion subsystem monitoring module, battery management subsystem, on-site monitoring equipment, power information harvester,
Central control level includes collection control server, collection controlled switching system, collection control human-computer interaction device, and scheduling controlling layer includes some scheduling controls
Terminal device processed, scheduling controlling terminal device includes scheduling controlling server, scheduling controlling work station, sodium sulphur energy-storage module group bag
Some sodium sulphur energy-storage module strings are included, sodium sulphur energy-storage module string is connected by the cabinet that confluxes with energy conversion system, sodium sulphur energy-storage module
String includes some sodium sulphur energy-storage modules, and sodium sulphur energy-storage module includes sodium-sulfur battery module, battery management unit, sodium sulphur energy-storage module
In energy storage device heap storage, energy storage device heap storage is arranged on the basic platform of power station.
Further, the sodium-sulfur battery energy storage device of this programme includes sodium sulphur energy-storage module group first, sodium sulphur energy-storage module group second,
Sodium sulphur energy-storage module group first includes sodium sulphur energy-storage module string A, sodium sulphur energy-storage module string B, and sodium sulphur energy-storage module string A includes 10
5kW energy type sodium sulphur energy-storage modules, sodium sulphur energy-storage module string B includes 10 5kW energy type sodium sulphur energy-storage modules, sodium sulphur energy storage mould
Block group second includes sodium sulphur energy-storage module string C, sodium sulphur energy-storage module string D, and sodium sulphur energy-storage module string C includes 10 5kW power-type sodium
Sulphur energy-storage module, sodium sulphur energy-storage module string D includes 2 25kW power-type sodium sulphur energy-storage modules.Energy storage device heap storage includes heap storage
Group first, heap storage group second, heap storage group first includes the 2 5kW modules heap storages row's first being arranged side by side back-to-back, 5kW modules heap storage row's first
Including 3 5kW module heap storages, heap storage group second includes the heap storage of 3 5kW modules, 1 25kW module heap storage, on 5kW module heap storages are
Lower two-layer sphere of movements for the elephants shape storehouse cabinet structure, 4 positions in storehouse of 5kW modules are provided with above-mentioned upper and lower two-layer sphere of movements for the elephants shape storehouse cabinet structure,
25kW module heap storages are that upper and lower two-layer " says " font storehouse cabinet structure, and above-mentioned upper and lower two-layer " is said " in font storehouse cabinet structure and is provided with 2
The position in storehouse of 25kW modules.
Further, the energy conversion system of this programme includes double mode energy accumulation current converter, some two-way DC converters, on
The inverter side for stating some two-way DC converters is connected in parallel to the DC side of double mode energy accumulation current converter, double mode energy storage unsteady flow
The AC of device accesses power network bus, and sodium sulphur energy-storage module string is connected by two-way DC converter with double mode energy accumulation current converter
Connect.Double mode energy accumulation current converter includes DC side electromagnetic interface filter, Three-Phase PWM Rectifier, transformer, AC BMI wave filters,
The direct current that two-way DC converter is exported is converted into three-phase alternating current input power network or to electricity consumption by double mode energy accumulation current converter
Load is powered, and it is defeated after two-way DC converter is depressured that alternating current in power network is converted into direct current by double mode energy accumulation current converter
Enter sodium sulphur energy-storage module string.Two-way DC converter includes that input direct-current circuit breaker Q F1, output dc circuit breaker QF2, input are straight
Stream contactor KA1, output D.C. contactor KA3, input capacitor C1, output capacitor C2, direct current electromagnetic interface filter, precharge
Resistance R1, pre-charge contactor KA2, reactor L1, half-bridge IGBT module, fuse FU1, two-way DC converter is by inverter
The electric energy step-down input sodium sulphur energy-storage module string of side, two-way DC converter is by after the electric energy boosting of the sodium sulphur energy-storage module string
Double mode energy accumulation current converter is input into by inverter side.
Further, the battery management unit of this programme includes battery voltage sensing module, battery temperature detection control module,
Direct current administrative unit includes that loop voltage detection module, loop current detection module, battery management unit control module, data are led to
Letter interface, direct current administrative unit is by data communication interface to host computer, energy conversion system transmitting function signal, direct current management
Unit receives operating instruction, configuration information by data communication interface from Monitor Computer Control System, and direct current administrative unit is by electricity
Pond administrative unit control module transmits above-mentioned operating instruction, configuration information to battery management unit.Direct current administrative unit and battery
Administrative unit passes through MODBUS by RS485 bus communications, direct current administrative unit with Monitor Computer Control System, energy conversion system
Communication.
Further, the power conversion subsystem monitoring module of this programme includes current transformer voltage monitoring module, current transformer electricity
Flow monitoring module, current transformer temperature monitoring module, converter switches monitoring module, current transformer voltage monitoring module collection current transformer
DC side, the voltage signal of AC, current transformer current monitoring module gather current transformer current signal, current transformer temperature prison
Control module gathers the temperature signal of current transformer, and converter switches monitoring module monitors the on off state of current transformer.
Further, the energy storage device heap storage of this programme includes environmental monitoring installation, and environmental monitoring installation includes TEMP
Device, humidity sensor, exhaust blower, temperature sensor, humidity sensor are located in energy storage device heap storage, and exhaust blower is located at energy storage dress
Put the top of heap storage, detected value comparison knot more than setting value of the environmental monitoring installation according to temperature sensor and humidity sensor
Fruit starts exhaust blower, and exhaust blower derives the heat in energy storage device heap storage, moisture by air flow.
Further, the energy storage device heap storage of this programme also includes fire alarm control system, fire alarm control system bag
Master controller, Smoke Sensor, smoke abatement filter, acoustic-optic alarm, standby battery power supply are included, master controller is located at secondary
In equipped chamber, Smoke Sensor is located in energy storage device heap storage, and smoke abatement filter includes smoke discharging pipe, closed filtering chamber,
Spray filtering device is provided with closed filtering chamber, master controller triggers sound and light alarm dress according to the alarm signal of Smoke Sensor
Put, exhaust blower, smog entered and filtered in closed filtering chamber by exhaust blower by smoke discharging pipe.
Further, the power station basic platform of this programme includes platform for placing, the equipment interior space outside heap storage room, outside heap storage room
Platform for placing is provided with energy storage device heap storage, and the cabinet that confluxes, energy conversion system, power network exchange mother are provided with the equipment interior space
Fire wall is provided between platform for placing outside line, the equipment interior space and heap storage room, fence is equipped with around platform for placing outside heap storage room
Device.The ground level of power station basic platform is higher than the ground level around the basic platform of power station, and power station basis is flat
Sewer System is laid with platform, the entrance of Sewer System is located in the basis of energy storage device heap storage, and the outlet of Sewer System is led to
The pumping equipment of ground around the basic platform of power station.
Further, the silo roof of the energy storage device heap storage of this programme is " people " character form structure, and the edge of silo roof is provided with rain gutter
Structure, rain gutter construction, by pipeline communication, draining is passed through after the precipitation remittance rain gutter construction for falling into silo roof with Sewer System
Piping discharges power station basic platform.
Further, the power station basic platform of this programme also includes remote viewing technical precaution system, and remote viewing technical precaution system is enclosed including electronics
Column, camera head, gate control system, audible-visual annunciator, network switch, monitor terminal, camera head include some cameras, take the photograph
As device is by camera collection, storage live video information, the host computer of remote viewing technical precaution system is adjusted by monitor terminal at any time
Read live video information.
Sodium-sulphur battery power station of the present invention provides a kind of sodium-sulphur battery power station with practicality, directiveness, with good
Commercial application prospect.
Brief description of the drawings
Fig. 1 is the principle schematic in this programme sodium-sulphur battery power station.
Fig. 2 is the principle schematic of sodium sulphur energy storage subsystem.
Fig. 3 is the principle schematic of two-way DC converter.
Fig. 4 is the principle schematic of double mode energy accumulation current converter.
Fig. 5 is the principle schematic of Power Station Monitored Control System.
Fig. 6 is the schematic diagram that sodium-sulphur battery power station is arranged on the basic platform of power station.
Wherein, PCS is energy conversion system, and BMS is battery management system, and BMU is battery management unit, and DMU is direct current
Administrative unit.
Specific embodiment
The capital equipment of energy-accumulating power station includes battery module, the cabinet that confluxes, PCS and other all kinds of control devices.Sodium sulphur electricity
The characteristics of pond is hot operation, itself needs incubator to maintain its operating temperature, to relatively low, the Ke Yishi of ambient temperature requirement
With the various installation environments in indoor and outdoor.Battery is the memory bank of energy, and sodium-sulphur battery runs in high temperature environments, safety problem one
It is directly one of sodium-sulphur battery sixty-four dollar question, in addition to increasing intrinsic safety type and designing in battery body, module, design safety protection mould
Block heap storage is also one of indispensable security means.Each intermodule installs isolating and protecting plate, effectively prevents Individual cells from going out
Other equipment safe operation is influenceed after now failing.Battery module used by power station includes 5kW and two kinds of 25kW, according to Economization on land,
Soil is rationally utilized, the design principle of land utilization ratio is improved, module is put using design in heaps.There are 4 in a heap storage
5kW or 2 25kW battery module, during installation, using bilevel mode.Power station is divided into 2 groups of totally 4 loops, 4 loop heaps
Storehouse is discharge side by side, needs reserved about 3 meters of spaces to be used to operate between 2 groups.Sodium-sulphur battery is in 300 DEG C in normal operation
Left and right, it is considered to security reason, a face fire wall, or guardrail (reserved safe space) are built in the periphery of heap storage.Battery module is vertical
Square, 5kW module sizes are 92cm × 81cm × 105cm, and weight is about 1000kg, 25kW module sizes be 2020cm ×
1510cm × 1100cm, weight is about 3500kg.BMU casings are carried above module, certain operating space, heap storage and electricity need to be reserved
The installation of pond module needs largely to reserve substantial amounts of operating space, and after completion of installation, reserved space can not be filled
Divide and utilize, such as heap storage is installed indoors, and space can be caused largely to waste.Outdoor installation space is big, relatively easy to operate, Neng Goufang
Just the various large scale equipments of utilization, are also convenient for the turnover of haulage vehicle.Therefore, the outdoor mode of selection is installed in heap storage.
The stacking of battery module is installed using layering.In one loop, battery module is series connection, the quantity of module according to
Power plant scale is different and different.Module is stacked and uses double-layer structure, and takes back-to-back mode to arrange, i.e. two loops back side
Discharge side by side, this mode is arranged, and can largely provide the utilization rate in space, it is to avoid be front and rear all pre- every string heap storage
Stay operation and safe space and the space waste that causes.One piece of iron plate is installed between each module, it is to avoid in extreme feelings
Under condition, a battery catches fire can spread to the possibility of other modules.
Power station conflux in addition to battery module and heap storage, also cabinet, PCS, stand with power supply and metering cabinet, UPS control flows etc.
Equipment is constituted.The cabinet that confluxes is the electrical equipment being directly connected to battery module, one cabinet that confluxes of each loop configuration, institute
The dc main for having module is pooled in the cabinet that confluxes.To avoid causing pressure on circuit because cable is long in heavy-current discharge
Drop is excessive, and the cabinet that confluxes must as far as possible reduce the distance with heap storage in design.Cabinet size of confluxing be 800cm × 800cm ×
2000cm, can select indoor or outdoor when mounted.PCS, stand and control screen dimensions equal with power supply and metering cabinet, UPS
It is 800cm × 800cm × 2000cm, it is desirable to have staff's frequent operation, and has touch-screen, electric components etc. in equipment
It is higher for environmental requirement installed in the surface of equipment, unsuitable outdoor installation, therefore selection indoor installation mode.
To prevent rainfall during the rainy day excessive, the top of heap storage uses trigonometric expression inclined design, and heap storage top will not when raining
Leave rainwater.The bevel edge above heap storage, devises rain eaves, and when raining, the rainwater above heap storage can be flowed into rain eaves, along
Rain eaves is discharged to the outside of guardrail or fire wall finally by pipeline, it is to avoid rainwater is poured directly into scene, causes scene
The water surface is too high.Some area, during into rainy season, rainfall than larger, to ensure that can not there be ponding, the ground in power station in power station scene
Face employs inclined design.The ground in power station is higher than side road surface 20cm, and one end horizontal slope near road surface is smaller, another
Hipped end degree is larger, and rainwater can be in the ground in power station trickling to the road surface on side, and rainwater is left to other places from road surface again.In heap
Storehouse lower section is convenient for cabling, leaves 2.28m × 5.72m Equipment Foundations, and drainage pipeline is furnished with basis, will not be made because raining
It is too high into the basis the inside water surface.
300 DEG C of high temperature are in when battery module runs, and some areas weather in summer is more hot, can cause heap storage
Middle temperature is too high, the operation of electrical equipment in influence heap storage.To solve this problem, environmental monitoring dress is provided with the top of heap storage
Put and exhaust blower, be provided with temperature sensor in device, temperature in real-time monitoring heap storage, when temperature is higher than setting value, exhaust blower
Automatic, heat can be discharged to heap storage outside with air in heap storage, and outside air can be from ventilating opening or equipment below heap storage door-plate
It is basic to enter into heap storage above, so that air forms a kind of circulation with outside air in heap storage, heat is taken away, reach to heap
The purpose of storehouse cooling.Humidity sensor is housed in addition in environment monitoring device, when humidity is more than setting value in heap storage, equally may be used
To start exhaust blower, air in heap storage is formed circulation with outside air, take away malaria in heap storage.
The safe operation in power station is the premise of power station operation, including personal security and equipment safety.Safety prevention measure point
Electrical protection measure, physical protection measure and the class of security system safeguard procedures three.In terms of electic protection, power station stored energy capacitance is
200kW, therefore according to《QGDW480-2010 distributed power sources access electric power network technique regulation》, protected using air-break overcurrent tripping
Shield, without other configuration protection device.To ensure personal security, operating personnel can put resistance to when electric operation is carried out, below
High-Voltage Insulation pad.Temperature sets fire wall and fence up to 300 DEG C or so around power station when sodium-sulphur battery normally runs.If
Fire wall is put apart from 1 meter of heap storage, due to considering the opereating specification that equipment is installed, live fire wall is 2 meters apart from heap storage.Do not having
Other sides of fire wall, set fence, apart from 3 meters of heap storage, it can be ensured that the safety of personnel when there is fire.As power station occurs fire
Calamity, it is impossible to carry out fire-fighting using water, is furnished with yellow sand and fire extinguisher inside power station.Once there is fire, battery module in power station
A large amount of smog are distributed after catching fire, the Smoke Sensor above environment monitoring device can be touched, exhaust blower starts simultaneously in heap storage, cigarette
Mist and volatile harmful material can enter in filter with pipeline, while spraying pump startup, current form water after entering filter
Mist, volatile harmful material incorporated in water, it is to avoid surrounding environment is caused damage.The air-conditioning and ventilation system of transformer station with disappear
Anti- warning system linkage.Fire alarm control system is by master controller, various detectors, manual pull station, alarm bell, cable etc.
Equipment is constituted, and when a fire, fire signal is delivered to master controller by detector, can show that fire occurs on master controller
Time, place, visual alarm of concurrently speaking.Master controller is located in secondary device room, and it is responsible for the fire-fighting system of whole station
Monitoring.In secondary device room, current transformer indoor location airsamplingsmokedetector, the detection of line style constant temperature is laid in cable duct
Device, while monitoring system in fire alarm feeding station is realized into teletransmission.Alternating current 220V power supply used by fire alarming and control device by
Uninterrupted power source is directly powered, and device per se with battery as AC power stand-by power supply.
Monitoring system is provided with camera through intelligent acess Utilities Electric Co. internal network in heap storage and control room, and scope is contained
Each corner of Demonstration Station is covered.Camera shoots video storage in control room monitoring system cabinet, and Utilities Electric Co. inside can
Remotely to check power station service data at any time, it is possible to have access to camera shoot video, real time inspection Demonstration Station situation, once
There is exception in power station, can understand concrete condition with the very first time, and take urgent measure.Conflux and be provided with GPRS device in cabinet, can
With by client is installed and connect network computer carry out remotely check by DMU send battery module master data,
The ruuning situation in power station is grasped at any time.A set of remote viewing technical precaution system is configured in power station, remote viewing technical precaution equipment only relates to energy storage electricity
Stand scope.Remote viewing technical precaution system by fence, video camera, IR intrusion detector, gate control system, audible-visual annunciator, connection cable,
Monitor screen cabinet, built-in hard disk video tape recorder, liquid crystal display, alarm host machine, comprehensive power, network switch, monitor terminal etc.
Equipment is constituted.
Power station is mainly made up of three parts：Sodium sulphur energy storage subsystem, power conversion subsystem and monitoring system.Sodium sulphur is stored up
Can subsystem mainly have the electrical equipments such as sodium sulphur energy-storage battery module, battery management system and the cabinet that confluxes, heap storage, mainly realize sodium
Sulphur battery operation is controlled and on-line checking.Power conversion subsystem includes that bidirectional, dc conversion (DC/DC) and double mode energy storage become
Stream (AC/DC), realizes the bidirectional energy transmission between battery energy storage system dc-battery and AC network.Monitoring system is in terms of
Process control and dispatch automated system based on calculation machine, are mainly made up of work on the spot station and server etc..
Sodium sulphur energy storage subsystem is most important subsystem in power station, including sodium-sulfur battery module, battery management system
(BMS) it is and the cabinet that confluxes, by sodium-sulfur battery energy storage module, battery management subsystem, confluxes cabinet and heap storage constitutes energy-storage module heap.
Sodium sulphur energy storage subsystem is gone here and there sodium sulphur energy-storage module and is constituted by 2 group 4, accesses 2 PCS, and each module string matches somebody with somebody 1 direct current administrative unit
DMU and 1 cabinet that confluxes, every 1 module matches somebody with somebody 1 battery management unit BMU.1st group by 20 5kW energy type MCN-5E type sodium sulphur
Battery module, point 2 strings, often string 10, power network or load are linked after accessing PCSA.2nd group is 10 5kW power-type MCN-5P types
Sodium-sulfur battery module composition the 1st is gone here and there, and the 2nd string is constituted by 2 25kW power-type MCN-25P type sodium-sulfur battery modules, is respectively connected to
Power network or load are linked after PCSB.The overall dimensions of 5kW battery modules are 907mm × 986mm × 1038mm, outside 25kW modules
Molded dimension is 2120mm × 1630mm × 1100mm.
Sodium-sulphur battery management system (BMS) is main by direct current administrative unit (DMU) and battery management unit (BMU) two parts
Composition, BMU is mainly responsible for the detection of the voltage and temperature of battery module, and the operation control of module temperature, DMU is responsible for loop voltage
With the detection of electric current, the voltage and temperature of the battery module detected according to BMU carry out the analysis of battery status and judge, and in event
Failure alarm signal and forbidden energy signal are sent during barrier to host computer and energy conversion system (PCS), another DMU is also responsible for receiving monitoring
System operating instructions and configuration information, the instruction and information that will be received are performed in being issued to BMU.Pass through between DMU and BMU
RS485 bus communications, are communicated between DMU and Monitor Computer Control System and PCS by MODBUS.
BMU is arranged on battery module, and its major function and technical parameter are as follows：
(1) battery or battery strings voltage, scope are detected：0~18V；Certainty of measurement：± 0.020V, each passage is independently adopted
Collection, does not interfere with each other；
(2) measurement module exports total voltage, certainty of measurement ± 0.1FS%mV；
(3) temperature follows inspection, scope：0~500 DEG C, accuracy of temperature control ± 5 DEG C.Default factory heats up and sets；Time and temperature
Variable quantity can intelligent set；
(4) temperature control uses PWM pulse-width regulateds, and optically isolated control solid-state relay adjusts heating power；
(5) monitoring modular is switched to auto thermal compensation operational mode in charging and discharging state；
(6) communicated with DMU by outside RS485/CAN buses, communication speed 250kb/s, send battery data, battery shape
State and warning information；
(7) 2 way switch amount output control functions are had；
(8) 6 way switch amount Input Monitor Connector functions are had；
(9) body fault self-checking function；
(10) immunity to interference grade：IV grade of IEC.
DMU is arranged in the cabinet that confluxes.DMU is the upper level management system of BMU, can at most manage 12 BMU, major technique
Parameter and function are as follows：
(1) the measurement of sodium sulphur energy-storage module string total voltage, scope：0-640V, precision：±0.1V；
(2) charging and discharging currents measurement, scope：0~± 1000A, measuring accuracy：± 1.5A (depends on sensor accuracy)；
(3) completely self-contained RS485 and CAN/LAN interfaces；
(4) bus at most can read cell voltage and temperature information with 12 BMU module communications；
(5), by CAN and PCS two-way communications, direct current branch discharge and recharge can control；
(6) LAN interface is communicated by ICP/IP protocol and system monitoring PC, reports branched battery voltage, temperature and other
Information, and receive the order of control platform；
(7) SOC estimates and SOH that SOC estimation precision is less than 10%；
(8) 14 way switch amount Input Monitor Connector functions are provided；
(9) 6 way switch amount output control functions are provided；
(10) fault diagnosis and online alarm (voltage, electric current, temperature and SOC)；
(11) the monitor in real time of battery operation state is realized：Comprising charging process control instruction, discharge process control instruction, electricity
Pond group temperature control, battery are managed completely；
(12) battery failures diagnosis and safeguard protection are realized：Comprising battery failures diagnosis, Failure Control instruction；
(13) there is self-inspection and self-diagnostic function：Can diagnose and process all kinds of BMU failures；
(14) cell safety：Over-charging of battery is prevented, is crossed and is put；To battery operation realtime monitoring, send in time maintenance request,
The prompt messages such as maintenance call, disabling request；
Battery using after a period of time, it is necessary to carry out capacity check to battery, can be to using by holding inspection pattern
The capacity of battery is detected；
(16) failure and inspecting state are uploaded：In system operation, if BMU breaks down or needs maintenance, pass through
Failure and inspecting state upload function, energy-storage module heap monitoring system is uploaded to by the failure of device itself and maintenance signal.
The cabinet that confluxes is an important part in sodium sulphur energy storage subsystem, summarizes the AC line of all battery modules in loop
Cable, the clothes that energy conversion system is accessed by the cabinet that confluxes and battery module is controlled/retired.In addition, the cabinet that confluxes is also responsible in loop
The distribution of the working power and accessory power supply of battery module and control, it is right to realizing to be realized by the DMU in the cabinet that confluxes
BMU operation control and manage, and to BMU gathered datas treatment and transmit, sent when battery module breaks down alarm and
Forbidden energy signal.
Battery module is arranged in heap storage, the upper and lower two-layer of heap storage point, is installed using back-to-back mode, and first and second loop is
First group is installed together, and third and fourth loop is installed together for second group.Each heap storage can place 4 5kW battery moulds
Block, point upper and lower two-layer arrangement, the definition clockwise since the heap storage lower left of module numbering.There are 25kW battery modules 2 in this power station,
It is installed in a heap storage group, divides and install up and down.
Heap storage is in addition to as the carrier for carrying battery module, it may have protection and the effect of regulating cell modular environment, its
Major function is as follows：
(1) heap storage uses modularization, standardized designs, with part transport, in-site installation form；
Basic heap storage can carry out it is back-to-back or parallel, be vertically assembled into many position in storehouse heap storages.Each intermodule is settable anti-
Shield division board, needs to set fixing device after module is in place；
(3) each basic heap storage sets ventilating opening, cigarette sense (humiture) monitoring device in position, and top sets axle stream
Blower fan, for the forced ventilation of basic heap storage；
(4) heap storage degree of protection is not less than IP54.
(5) heap storage directly can be mounted directly in concrete foundation of the flatness less than 2mm, can also be reserved in electric panel room
Installed on the basis of channel-section steel.
One important component of battery energy storage system is exactly energy conversion system (Power Convertion
System).Can realize that the bidirectional energy between sodium sulphur energy storage subsystem battery module and AC network is transmitted by PCS, lead to
Cross management of charging and discharging of the control strategy realization to battery module, the tracking to net side load power, to battery energy storage system charge and discharge
The control of electrical power, to control of voltage on line side under off-grid operation mode etc..PCS is main by two-way DC converter (DC/DC)
Constituted with double mode energy accumulation current converter (AC/DC), to realize that the bidirectional energy between sodium sulphur energy storage subsystem and AC network is passed
Pass.The effect of DC/DC two-way DC converters is that the voltage in loop is lifted into the double mode energy accumulation current converter work of suitable AC/DC
Voltage class, loop uses a 50kW two-way DC converter (DC/DC), and converter is by three module crisscross parallels
Work, three modules divide equally the charge-discharge electric power of battery module in loop.The inverter side of DC/DC two-way DC converters is in parallel
It is connected to the DC side of AC/DC current transformers.
In two-way DC/DC converters, input, output dc circuit breaker QF1, QF2, input and output D.C. contactor KA1,
KA3, input and output capacitor C1, C2, direct current EMI, pre-charge resistance R1, pre-charge contactor KA2, reactor L1, H bridge IGBT
Module, fuse FU1.When two-way Buck/Boost converters (step-down/up type converter) are positive to work, T1, D2 coordinate work
Make, energy AC/DC inverters flow to battery, from left to right, in Buck decompression modes.When T1 is turned on, C2 sides voltage adds
Onto diode D1, L1 and output capacitance C1, therefore D2 ends.The voltage being now added on L is U1>U2, therefore inductive current is linear
Increase energy to be stored in L in the form of magnetic field energy, and simultaneously to battery charging.When T1 is turned off, inductive current passes through D2
Afterflow, inductive current linearly reduces, and the energy storage of L is shifted to C1.When reverse operation, T2, D1 cooperating, energy is from battery
Flow direction exchange AC/DC inverters, from right to left, in boost mode.When T2 is turned on, C1 is all added on inductance, inductive current
Linearly increasing, electric energy is stored in L in the form of magnetic field energy, diode D1 cut-offs.When T2 is turned off, inductive current by D1 to
Outlet side is flowed, and the energy storage on C1 and L1 is shifted to C2, i.e., charged to C2, and the voltage being now added on inductance is less than for U2-U1
Zero, so inductive current linearly reduces.In DC/DC conversion processes, controlled using the PI of voltage, current double closed-loop.Reality output
The feedback signal Uo of the voltage and set-point U of output voltagedrefIt is compared, its difference generates inner ring (electric current by PI links
Ring) given current signal Idref, IdrefAgain with the value of feedback I of inductive currentdlCompare, ultimately generate pwm control signal, and then
The on off state of IGBT in control DC/DC main circuits, realizes that voltage stabilizing is exported.
The double mode energy accumulation current converters of AC/DC, as the interface between power network and sodium sulphur energy storage subsystem, are energy-storage systems
Important component, Main Function is that the direct current that DC/DC two-way DC converters are exported is converted into three-phase alternating current input
Power network is powered to power load, it is also possible to which alternating current in power network is converted into direct current by DC/DC two-way DC converters
Be stored in sodium-sulfur battery module after step-down, realize the energy in bidirectional flow between sodium-sulphur battery and power network, and can realize it is grid-connected,
Off-grid operation is controlled.PCS energy accumulation current converter Functional Designs are as follows：
(1) DC side protection to error-polarity connection, the protection of DC side overvoltage/undervoltage, DC side overcurrent protection, AC overcurrent protection,
Short-circuit protection, AC overvoltage/undervoltage protection, AC crosses underfrequency protection, overtemperature protection, surge protection；
(2) the function such as pressure limiting electric discharge, invariable power electric discharge, constant-current discharge；
(3) isolated island detects function；
Based on sodium sulphur energy storage subsystem micro-grid system simultaneously, the control strategy of off-network seamless switching；
(5) active and idle control function；
(6) with reference to the high-multiplying power discharge function of sodium-sulphur battery self-characteristic；
The AC of the double mode energy accumulation current converters of AC/DC can be directly connected under V/F off-grid operation patterns off-network load,
Charging equipment, connection power network is charged to battery under P/Q patterns；
(8) DC/DC two-way DC converters can be with the various different configurations of compatibility and the sodium-sulfur battery module of model；
(9) the multi-machine parallel connection of DC side and AC runs control function；
(10) man-machine interface and communication function.
AC/DC bimodulus current transformer and DC/DC DC converters are basically identical on hardware configuration, by mainly including power mould
Block and the device such as reactor, contactor and breaker, electromagnetic interface filter, controller, isolating transformer, UPS are constituted.
Monitoring system is computer-based process control and dispatch automated system, it can be to microgrid inside
Distributed power generation, energy storage device and load condition are monitored, when micro-grid connection operation, off-grid operation and state switch, root
According to power supply and characteristic is met, the distributed power generation, energy storage device and load to its inside optimize control, and realization is to microgrid
Safe and stable operation, improves the efficiency of energy utilization of microgrid.Monitoring system is main to be supervised by distributed power generation monitoring, energy storage device
Control, load monitoring, safety monitoring and electric energy quality monitoring are constituted.Micro-grid system design by the way of hierarchical control,
Three layers can be divided into logic, i.e. key-course, central control level, dispatching of power netwoks layer on the spot.Dispatching of power netwoks layer is microgrid and power distribution network
Scheduling system, the angle coordinated scheduling micro-grid system of safety, economical operation from whole power network.Central control level is whole microgrid
The core of system, centralized management distributed power source, energy storage device and each type load, completes the monitoring and control of microgrid, root
According to the ruuning situation of microgrid, real-time optimal control strategy realizes grid-connected, off-network, seamlessly transitting of stopping transport, and is born when being incorporated into the power networks
Duty realizes that microgrid running optimizatin is acted on, and the electricity consumption situation that distributed power generation is exerted oneself with each type load is adjusted in off-grid operation, real
The steady state Safe Operation of existing microgrid.Key-course is made up of the protection equipment and Local Controller of micro-grid system on the spot.Microgrid is on the spot
Controller completes distributed power generation to frequency, the Primary regulation of voltage, and in-situ protection equipment completes the quick of micro-grid system failure
Protection.
The information that monitoring system is mainly collection subsystems is collected, such as sodium sulphur energy storage subsystem, energy conversion
Subsystem, also security monitor platform etc. in addition, the information to gathering is analyzed and judges, and helps to run operating personnel and do
Go out the control program of optimization.Monitoring system has data acquisition function, data processing function, control operation function, fault warning
Function, Event handling, human-computer interaction function etc..
(1) data acquisition function
Distributed power generation, energy storage device running state parameter are acquired, at least including a group terminal voltage, group end electric current,
The telemetered signals such as state-of-charge, temperature, and the remote signals such as on off state, trouble-signal, abnormal signal.To the electricity of current transformer
The telemetered signals such as pressure, electric current, temperature, and the remote signals such as on off state, trouble-signal, abnormal signal are acquired.To matching somebody with somebody
Voltage, electric current, phase, frequency, active power, reactive power, power factor, active energy, capacity of idle power of grid interface etc.
Telemetered signal and on off state, trouble-signal, abnormal signal etc. are acquired.
(2) data processing function
Calculating analysis, the more treatment such as line alarm, reasonableness check are carried out to gathered data, and related data is deposited
Storage.
(3) control operation function
Realize division control to the respective switch equipment of energy-storage system, and the charging and discharging state of energy storage device is controlled
System.
(4) fault warning function
Possess the alarming determining and removing, alarm inquiry, self-defined alert levels, alarm system of trouble-signal and abnormal signal
The functions such as meter analysis, warning message storage, and can be realized by forms such as figure, voice, word, printings.
(5) Event handling
It is capable of achieving to the journal of event, positioning and the function such as fault message inquiry on the spot.
(6) human-computer interaction function
Menu display function.Can to energy-storage system electrical structure diagram, charging and discharging curve figure and system realtime curve,
The figure shows such as data pie chart, block diagram are provided as needed, it is possible to provide main matter order shows.Interactive operation function.Hair
When giving remote control, school etc., realize the operation such as people's station, alarming determining, listed, editor and modification database, figure in man-machine interface
Etc. information.Report Server Management function.The Automatic generation of information such as data, exception and accident information, operation note are carried out to energy-storage system
Form, edlin, storage, inquiry is entered to form, and possess the functions such as timed print, calling printing.
(7) interconnected with automatic information system
With the interconnection of the related system such as dispatch automated system, electrical power distribution automatization system, marketing management system, realize data and
Information is exchanged.
5kW number of modules is 30 in power station, 25kW number of modules 2, wherein：
(1) MCN-5E modules 20, configure 5 groups of heap storage, constitute 100kW sodium sulphur energy-storage module string groups, and point 2 tunnels are respectively connected to
PCS-A-1 and PCS-A-2 grid-connecting apparatus DC/DC DC loops.
(2) MCN-5P modules 10, configure 3 groups of heap storage, constitute 50kW sodium sulphur energy-storage module strings, access the grid-connected dresses of PCS-B-1
Put DC/DC DC loops.
(3) MCN-25P modules 2,1 group of configuration 25kW modules heap storage, constitute 50kW sodium sulphur energy-storage module strings, access PCS-
B-2 grid-connecting apparatus DC/DC DC loops.
Energy storage subsystem installation region position, the cabinet that confluxes is disposed within, opens wall and sets a maintenance channel and sets fire door.Conflux cabinet
Installation site is easy to the packet and maintenance to module string near to module heap storage, prevents maloperation.
Power equipment, circuit, module and the electronic component being related in such scheme in addition to special instruction, according to it
The concrete function of realization can select design and scheme generally in the art, it is also possible to select according to actual needs other design and
Scheme.
The sodium-sulphur battery power station of this programme devises PCS energy conversion systems from the global design of Demonstration Station
Function and structure, it is stipulated that the technical parameter of two-way DC converter and double mode energy accumulation current converter, devises energy storage monitoring system
System architecture and hierarchical structure, it is stipulated that the basic function and expanded function of energy storage monitor system body, it is proposed that energy-storage system
Monitoring system for power distribution networks performance indications are accessed, the communication structure of system is optimized, and module mode in heaps is designed.Base
In above content and feature, the sodium-sulphur battery power station of this programme has prominent substantive distinguishing features and significant progress.
The sodium-sulphur battery power station of this programme is not limited to the content disclosed in specific embodiment, the skill occurred in embodiment
Art scheme can be based on the understanding of those skilled in the art and extend, and those skilled in the art are according to this programme combination common knowledge
The simple alternative made falls within the scope of this programme.
Claims (10)
1. sodium-sulphur battery power station, it is characterized in that including sodium-sulfur battery energy storage device, energy conversion system, battery management system, electricity
Stand monitoring system, energy storage device heap storage, power station basic platform, the sodium-sulfur battery energy storage device includes some sodium sulphur energy-storage modules
Group, the sodium sulphur energy-storage module group is connected by the energy conversion system with power network bus, and the battery management system includes
Direct current administrative unit, battery management unit, the direct current administrative unit is arranged on confluxes in cabinet, and the Power Station Monitored Control System includes
On the spot key-course, central control level, scheduling controlling layer, the key-course on the spot is communicated to connect with the central control level, described
Central control level and the scheduling controlling layer communication connection, the key-course on the spot include power conversion subsystem monitoring module,
Battery management subsystem, on-site monitoring equipment, power information harvester, the central control level include collection control server, collection
Controlled switching system, collection control human-computer interaction device, the scheduling controlling layer include some scheduling controlling terminal devices, the scheduling controlling
Terminal device includes scheduling controlling server, scheduling controlling work station, and the sodium sulphur energy-storage module group includes some sodium sulphur energy storage
Module string, the sodium sulphur energy-storage module string is connected by the cabinet that confluxes with the energy conversion system, the sodium sulphur energy-storage module string
Including some sodium sulphur energy-storage modules, the sodium sulphur energy-storage module includes sodium-sulfur battery module, the battery management unit, the sodium
Sulphur energy-storage module is arranged in the energy storage device heap storage, and the energy storage device heap storage is arranged on the power station basic platform.
2. sodium-sulphur battery power station according to claim 1, it is characterised in that the sodium-sulfur battery energy storage device includes sodium sulphur
Energy-storage module group first, sodium sulphur energy-storage module group second, the sodium sulphur energy-storage module group first includes that sodium sulphur energy-storage module string A, sodium sulphur are stored up
Energy module string B, the sodium sulphur energy-storage module string A include 10 5kW energy type sodium sulphur energy-storage modules, the sodium sulphur energy-storage module string
B includes 10 5kW energy type sodium sulphur energy-storage modules, and the sodium sulphur energy-storage module group second includes that sodium sulphur energy-storage module string C, sodium sulphur are stored up
Energy module string D, the sodium sulphur energy-storage module string C include 10 5kW power-type sodium sulphur energy-storage modules, the sodium sulphur energy-storage module string
D includes 2 25kW power-type sodium sulphur energy-storage modules；The energy storage device heap storage includes heap storage group first, heap storage group second, the heap storage
Group first includes the 2 5kW modules heap storages row's first being arranged side by side back-to-back, and the 5kW modules heap storage row first includes 3 5kW modules
Heap storage, the heap storage group second includes the heap storage of 3 5kW modules, 1 25kW module heap storage, and the 5kW modules heap storage is upper and lower two-layer
Sphere of movements for the elephants shape storehouse cabinet structure, 4 positions in storehouse of 5kW modules, the 25kW are provided with the upper and lower two-layer sphere of movements for the elephants shape storehouse cabinet structure
Module heap storage is that upper and lower two-layer " says " font storehouse cabinet structure, and the upper and lower two-layer " is said " and 2 25kW are provided with font storehouse cabinet structure
The position in storehouse of module.
3. sodium-sulphur battery power station according to claim 1, it is characterised in that the energy conversion system includes double mode storage
Energy current transformer, some two-way DC converters, the inverter side of some two-way DC converters are connected in parallel to the bimodulus
The DC side of formula energy accumulation current converter, the AC of the double mode energy accumulation current converter accesses power network bus, the sodium sulphur energy storage mould
Block string is connected by the two-way DC converter with the double mode energy accumulation current converter；The double mode energy accumulation current converter includes
DC side electromagnetic interface filter, Three-Phase PWM Rectifier, transformer, AC BMI wave filters, the double mode energy accumulation current converter is by institute
The direct current for stating two-way DC converter output is converted into three-phase alternating current input power network or is powered to power load, the bimodulus
Alternating current in power network is converted into direct current and is input into the sodium after the two-way DC converter is depressured by formula energy accumulation current converter
Sulphur energy-storage module string；The two-way DC converter includes that input direct-current circuit breaker Q F1, output dc circuit breaker QF2, input are straight
Stream contactor KA1, output D.C. contactor KA3, input capacitor C1, output capacitor C2, direct current electromagnetic interface filter, precharge
Resistance R1, pre-charge contactor KA2, reactor L1, half-bridge IGBT module, fuse FU1, the two-way DC converter will be inverse
Become the electric energy step-down input sodium sulphur energy-storage module string of device side, the two-way DC converter is by the sodium sulphur energy-storage module string
Electric energy boosting after the double mode energy accumulation current converter is input into by inverter side.
4. sodium-sulphur battery power station according to claim 1, it is characterised in that the battery management unit includes cell voltage
Detection module, battery temperature detection control module, the direct current administrative unit include that loop voltage detection module, loop current are examined
Module, battery management unit control module, data communication interface are surveyed, the direct current administrative unit passes through the data communication interface
To host computer, energy conversion system transmitting function signal, the direct current administrative unit is by the data communication interface from upper
Machine monitoring system receives operating instruction, configuration information, and the direct current administrative unit is by the battery management unit control module
The operating instruction, configuration information are transmitted to the battery management unit；The direct current administrative unit and the battery management list
Unit is passed through by RS485 bus communications, the direct current administrative unit with the Monitor Computer Control System, energy conversion system
MODBUS communicates.
5. sodium-sulphur battery power station according to claim 1, it is characterised in that the power conversion subsystem monitoring module bag
Include current transformer voltage monitoring module, current transformer current monitoring module, current transformer temperature monitoring module, converter switches monitoring mould
Block, the current transformer voltage monitoring module gathers DC side, the voltage signal of AC of the current transformer, the current transformer electricity
Flow monitoring module gathers the current signal of the current transformer, and the current transformer temperature monitoring module gathers the temperature of the current transformer
Signal, the converter switches monitoring module monitors the on off state of the current transformer.
6. sodium-sulphur battery power station according to claim 1, it is characterised in that the energy storage device heap storage includes environmental monitoring
Device, the environmental monitoring installation includes temperature sensor, humidity sensor, exhaust blower, the temperature sensor, humidity sensor
Device is located in the energy storage device heap storage, and the exhaust blower is located at the top of the energy storage device heap storage, the environmental monitoring dress
Put and the air draft is started more than the comparison result of setting value with the detected value of the humidity sensor according to the temperature sensor
Machine, the exhaust blower derives the heat in the energy storage device heap storage, moisture by air flow.
7. sodium-sulphur battery power station according to claim 6, it is characterised in that the energy storage device heap storage also includes fire report
Alert control system, the fire alarm control system includes master controller, Smoke Sensor, smoke abatement filter, sound and light alarm dress
Put, standby battery power supply, the master controller is located in secondary equipped chamber, and the Smoke Sensor is located at the energy storage device
In heap storage, the smoke abatement filter includes smoke discharging pipe, closed filtering chamber, and spray is provided with the closed filtering chamber
Filter, the master controller triggers the acoustic-optic alarm, the air draft according to the alarm signal of the Smoke Sensor
Smog is entered and filtered in the closed filtering chamber by machine, the exhaust blower by the smoke discharging pipe.
8. sodium-sulphur battery power station according to claim 1, it is characterised in that the power station basic platform is included outside heap storage room
Platform for placing, the equipment interior space, platform for placing is provided with the energy storage device heap storage outside the heap storage room, in the canyon
The cabinet that confluxes, energy conversion system, power network ac bus are provided with space, are put outside the equipment interior space and the heap storage room
Fire wall is provided between platform, fence apparatus are equipped with around platform for placing outside the heap storage room；The ground of the power station basic platform
Face level height is laid with draining higher than the ground level around the power station basic platform in the power station basic platform
Piping, the entrance of the Sewer System is located in the basis of the energy storage device heap storage, and institute is led in the outlet of the Sewer System
State the pumping equipment of ground around the basic platform of power station.
9. sodium-sulphur battery power station according to claim 8, it is characterised in that the silo roof of the energy storage device heap storage is " people "
Character form structure, the edge of the silo roof is provided with rain gutter construction, and the rain gutter construction is connected with the Sewer System by pipeline
It is logical, the Sewer System discharge power station basis is passed through after the precipitation remittance rain gutter construction for falling into the silo roof flat
Platform.
10. sodium-sulphur battery power station according to claim 8, it is characterised in that the power station basic platform also includes remote viewing
Technical precaution system, the remote viewing technical precaution system includes that fence, camera head, gate control system, audible-visual annunciator, networking exchange
Machine, monitor terminal, the camera head include some cameras, and the camera head is gathered by the camera, storage is existing
Field video information, the host computer of the remote viewing technical precaution system has access to the live video information by the monitor terminal at any time.
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