CN106549503A - Sodium-sulphur battery Power Station Monitored Control System - Google Patents

Sodium-sulphur battery Power Station Monitored Control System Download PDF

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Publication number
CN106549503A
CN106549503A CN201611222301.4A CN201611222301A CN106549503A CN 106549503 A CN106549503 A CN 106549503A CN 201611222301 A CN201611222301 A CN 201611222301A CN 106549503 A CN106549503 A CN 106549503A
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China
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control
module
sodium
energy
battery
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CN201611222301.4A
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Inventor
姚超群
施勇
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State Grid Shanghai Electric Power Co Ltd
Shanghai Electric Sodium Sulfur Energy Storage Technology Co Ltd
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State Grid Shanghai Electric Power Co Ltd
Shanghai Electric Sodium Sulfur Energy Storage Technology Co Ltd
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Priority to CN201611222301.4A priority Critical patent/CN106549503A/en
Publication of CN106549503A publication Critical patent/CN106549503A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/0006Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network for single frequency AC networks
    • H02J13/0013Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network for single frequency AC networks characterised by transmission structure between the control or monitoring unit and the controlled or monitored unit
    • H02J13/0079Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network for single frequency AC networks characterised by transmission structure between the control or monitoring unit and the controlled or monitored unit with transmission using an intermediate treatment level between the control or monitoring unit and the controlled or monitored unit

Abstract

The present invention relates to a kind of sodium-sulphur battery Power Station Monitored Control System, including key-course on the spot, central control level, scheduling controlling layer, key-course is communicated to connect with central control level on the spot, central control level is communicated to connect with 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 units, scheduling controlling terminal unit includes scheduling controlling server, scheduling controlling work station.The invention provides a kind of sodium-sulphur battery Power Station Monitored Control System with practicality, directiveness, with good commercial application prospect.

Description

Sodium-sulphur battery Power Station Monitored Control System
Technical field
The present invention relates to a kind of battery Power Station Monitored Control System, more particularly to a kind of sodium-sulphur battery Power Station Monitored Control System, belong to Energy-accumulating power station field.
Background technology
Energy storage referred to by medium or equipment, energy stores is got up using the method for chemistry or physics, according to should The process that demand is discharged with particular energy form, the energy storage generally said refer to the energy storage for electric energy.Power energy storage technology To realize electrical network target of sustainable development, solve the problems, such as electricity unbalanced supply-demand contradiction and improve power supply reliability to pull 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, reduces gross coal consumption rate, power supply line loss.Meanwhile, power network development also face itself Face electricity consumption peak-valley difference gradually to increase, electric power netting safe running risk increase after the increase of electrical 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 with study on the industrialization in evening, technology maturation, domestic even more in the starting stage, needs badly and carries forward vigorously.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 sulfur electricity Energy storage of the battery forms such as pond, nickel-cadmium cell etc., the energy storage of other forms include ultracapacitor, superconducting magnetic energy storage etc..
As society is to the demand of electric power and production sustainable growth, the installed capacity, overlay area and load peak in electrical network Paddy difference constantly expands, and so substantial amounts of electricity needs is put forward higher requirement to the stability of electrical network, safety, intellectuality. For this in the urgent need to such electric energy storing system matches therewith, with balancing electric power load, equipment operating efficiency and Jing are improved Ji property, reduces or delays the investment of power construction, improves the adaptibility to response of electrical network burst accident, it is ensured that Operation of Electric Systems is pacified Entirely.Intermittent regenerative resource " can be spliced " by what is more important, electric energy storing system, 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 Key technology necessary to system and intelligent grid and distributed energy resource system is little, negative for solving its fault rate height, power system capacity The problems such as lotus fluctuation is big.
Sodium sulfur energy-storage battery (hereinafter referred to as sodium-sulphur battery) is because its capacity is big, small volume, energy storage and high conversion efficiency, Life-span length, without geographical restrictions the advantages of, be especially suitable for power energy storage use.Jing comprehensive comparative analysis, sodium-sulphur battery are 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.As sodium-sulphur battery has a series of features of high-energy battery, in the eighties End and the beginning of the nineties, apply (such as power station energy storage) 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 stablizing for 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 through engineering approaches 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 practicalness, still lacks the rule of directiveness in terms of the system design that electrical network is accessed Model.
The content of the invention
Sodium-sulphur battery Power Station Monitored Control System of the present invention discloses new departure, there is provided it is a kind of with practicality, directiveness Sodium-sulphur battery Power Station Monitored Control System, solves the problems, such as that prior art lacks practical plan.
Sodium-sulphur battery Power Station Monitored Control System of the present invention includes key-course, central control level, scheduling controlling layer on the spot, controls on the spot Preparative layer is communicated to connect with central control level, and central control level is communicated to connect with scheduling controlling layer, and key-course includes that energy turns on the spot Subsystem monitors module, battery management subsystem, on-site monitoring equipment, power information harvester are changed, central control level includes Collection control server, collection controlled switching system, collection control human-computer interaction device, scheduling controlling layer include some scheduling controlling terminal units, adjust Degree control terminal equipment includes scheduling controlling server, scheduling controlling work station.
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 battery management subsystem of this programme includes direct current administrative unit, battery management unit, and direct current management is single Unit is located at confluxes in cabinet, and battery management unit is located in sodium sulfur energy-storage module, and battery management unit includes battery voltage detection mould Block, battery temperature detection control module, direct current administrative unit include loop voltage detection module, loop current detection module, electricity Pond administrative unit control module, data communication interface, direct current administrative unit are changed to host computer, energy by data communication interface System transmitting function signal, direct current administrative unit are received operating instruction, are set from Monitor Computer Control System by data communication interface Confidence ceases, and direct current administrative unit is transmitted above-mentioned operating instruction, set to battery management unit by battery management unit control module Confidence ceases.
Further, with battery management unit by RS485 bus communications, direct current management is single for the direct current administrative unit of this programme Unit is communicated by MODBUS with Monitor Computer Control System, energy conversion system.
Further, it is additionally provided with battery clothes/retired controller, battery supply controller, GPRS to set in the cabinet that confluxes of this programme Standby, Terminal Server Client monitors the ruuning situation in sodium-sulphur battery power station by GPRS device.
Further, the on-site monitoring equipment of this programme includes live camera head, and live camera head includes some shootings Head, live camera head is gathered by photographic head, storage live video information, and the host computer of on-site monitoring equipment is had access to now at any time Field video information.
Further, the power information harvester of this programme includes some multifunction electric meters, multifunction electric meter collection distribution The voltage of network interface, electric current, phase place, frequency, active power, reactive power, power factor, active energy, capacity of idle power signal.
Further, the collection control server of this programme includes data analysiss/memory module, energy-storage system switchgear division control Molding block, fault alarm module, accident treatment module, data analysiss/memory module carry out calculating analysis, get over line to gathered data Alarm, reasonableness check, storage, the respective switch equipment point of energy-storage system switchgear division control module control energy-storage system The charging and discharging state of conjunction state, energy storage device, fault alarm module control trouble-signal and abnormal signal alarming determining with it is clear Except, inquiry of reporting to the police, the storage of self-defined alert levels, warning statistical analysiss, warning message by figure, voice, word, print in fact Existing, accident treatment module control sequence is recorded, positions, inquires about fault message on the spot.
Further, the collection control human-computer interaction device of this programme includes terminal display, Man Machine Interface, Report Server Management clothes Business device, operator are automatically generated, are compiled by Man Machine Interface editor, modification, confirmation data message, Report Server Management server Volume, storage, inquiry, printing reports.
Further, the scheduling controlling terminal unit of this programme and dispatch automated system, electrical power distribution automatization system, marketing pipe Reason system communication link is fetched carries out data, information exchange.
Sodium-sulphur battery Power Station Monitored Control System of the present invention provides a kind of sodium-sulphur battery power station prison with practicality, directiveness Control system, with good commercial application prospect.
Description of the drawings
Fig. 1 is the principle schematic of the sodium-sulphur battery Power Station Monitored Control System of this programme.
Fig. 2 is the principle schematic of battery management system.
Fig. 3 is the principle schematic of two-way DC converter.
Fig. 4 is the principle schematic of double mode energy accumulation current converter.
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
Sodium-sulphur battery power station is mainly made up of three parts:Sodium sulfur energy storage subsystem, power conversion subsystem and monitoring system System.Sodium sulfur energy storage subsystem mainly has the electrical equipments such as sodium sulfur energy-storage battery module, battery management system and the cabinet that confluxes, heap storage, Sodium-sulphur battery operation control and on-line checking are realized mainly.It is (DC/DC) and double that power conversion subsystem includes that bidirectional, dc is converted Pattern energy storage unsteady flow (AC/DC), realizes the bidirectional energy transmission between battery energy storage system dc-battery and AC network.Monitoring System is computer-based process control and dispatch automated system, mainly by groups such as work on the spot station and servers Into.
Sodium sulfur 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 sulfur energy storage subsystem is gone here and there sodium sulfur energy-storage module by 2 group 4 and is constituted, and accesses 2 PCS, and each module string matches somebody with somebody 1 direct current administrative unit DMU and 1 cabinet that confluxes, matches somebody with somebody 1 battery management unit BMU per 1 module.1st group by 20 5kW energy type MCN-5E type sodium sulfur Battery module, point 2 strings are often gone here and there 10, link electrical network or load 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 constitutes the 2nd string by 2 25kW power-type MCN-25P type sodium-sulfur battery modules, is respectively connected to Electrical 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 are mainly responsible for the detection of the voltage and temperature of battery module, and loop voltage is responsible in the operation control of module temperature, DMU With the detection of electric current, carry out the analysis of battery status and judge according to the voltage and temperature of the battery module of BMU detections, 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 for receiving and information are issued in BMU and are performed.Pass through between DMU and BMU RS485 bus communications, are communicated by MODBUS between DMU and Monitor Computer Control System and PCS.
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 are 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 arranges;Time and temperature Variable quantity can intelligent set;
(4) temperature control adopts PWM pulse-width regulateds, optically isolated control solid-state relay to adjust 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 on and confluxes in cabinet.DMU is the upper level management system of BMU, can at most manage 12 BMU, major technique Parameter and function are as follows:
(1) sodium sulfur energy-storage module string total voltage measurement, 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 passes through ICP/IP protocol and system monitoring PC and communicates, and 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 warning (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 informations such as maintenance call, disabling request;
(15), after battery is using a period of time, need 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 The failure of device itself and maintenance signal are uploaded to energy-storage module heap monitoring system by failure and inspecting state upload function.
The cabinet that confluxes is an important part in sodium sulfur 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 by realizing installed in the DMU confluxed in cabinet BMU operation control and manage, and to BMU gathered datas process and transmit, send when battery module breaks down warning 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, module numbering start definition clockwise from heap storage lower left.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 adopts 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 can arrange anti- Shield division board, needs to arrange fixing device after module is in place;
(3) each basic heap storage arranges vent, cigarette sense (humiture) monitoring device in position, and top arranges 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, also can be reserved in electric panel room Install on the basis of channel-section steel.
One important component part of battery energy storage system is exactly energy conversion system (Power Convertion System).Bidirectional energy transmission between sodium sulfur energy storage subsystem battery module and AC network can be realized by PCS, led 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 mainly by two-way DC converter (DC/DC) Constitute with double mode energy accumulation current converter (AC/DC), to realize that the bidirectional energy between sodium sulfur 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 to the double mode energy accumulation current converter work of suitable AC/DC Electric pressure, loop adopts a 50kW two-way DC converter (DC/DC), and changer is by three module crisscross parallels The charge-discharge electric power of battery module in loop is divided equally in work, three modules.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 changers, 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 changers (step-down/up type changer) are positive to work, T1, D2 coordinate work Make, energy AC/DC inverters flow to accumulator, from left to right, in Buck decompression modes.When T1 is turned on, C2 sides voltage adds To on diode D1, L1 and output capacitance C1, therefore D2 cut-offs.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 while charge to accumulator.When T1 is turned off, inductive current passes through D2 Afterflow, inductive current linearly reduce, and the energy storage of L is shifted to C1.When reverse operation, T2, D1 cooperating, energy is from accumulator 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 flows, and the energy storage on C1 and L1 is shifted to C2, i.e., charge 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 Feedback signal U of voltageoWith the set-point U of output voltagedrefIt is compared, its difference generates internal ring (electric current through PI links Ring) given current signal Idref, IdrefValue of feedback I with inductive current againdlRelatively, pwm control signal is ultimately generated, 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 electrical network and sodium sulfur energy storage subsystem, are energy-storage systems Important component part, Main Function are that the unidirectional current that DC/DC two-way DC converters are exported is converted into three-phase alternating current input Electrical network is powered to power load, it is also possible to which alternating current in electrical network is converted into unidirectional current by DC/DC two-way DC converters Be stored in after blood pressure lowering in sodium-sulfur battery module, realize the energy in bidirectional flow between sodium-sulphur battery and electrical network, and be capable of achieving it is grid-connected, Off-grid operation is controlled.PCS energy accumulation current converter functional design is 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, the protection of AC overvoltage/undervoltage, AC cross 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;
Micro-grid system based on sodium sulfur energy storage subsystem 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, Charger, under P/Q patterns connects electrical network and is charged to accumulator;
(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, catalyst and chopper, electromagnetic interface filter, controller, isolating transformer, UPS composition.
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 is optimized control, and realization is to microgrid Safe and stable operation, improves the efficiency of energy utilization of microgrid.Monitoring system is mainly by distributed power generation monitoring, energy storage device prison Control, load monitoring, safety monitoring and electric energy quality monitoring are constituted.The mode for being designed with hierarchical control of micro-grid system, Three layers can be divided in 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 the safety, economical operation from whole electrical 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, grid-connected, off-network, seamlessly transitting of stopping transport are realized, 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.
Monitoring system mainly gathers the information of subsystems and is collected, such as sodium sulfur energy storage subsystem, energy conversion Subsystem, also security monitor platform etc. in addition, the information to gathering are analyzed and judge, and help to run operator 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.Electricity to 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 The voltage of grid interface, electric current, phase place, frequency, active power, reactive power, power factor, active energy, capacity of idle power etc. Telemetered signal and on off state, trouble-signal, abnormal signal etc. are acquired.
(2) data processing function
Carry out calculating analysis, more line alarm, reasonableness check etc. to process, and deposit related data to gathered data 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, inquiry of reporting to the police, self-defined alert levels, system of reporting to the police 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.Send out When sending remote control, school etc., the operation such as people's station, alarming determining, listed is realized in man machine interface, editor and change data base, figure 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, enters edlin, storage, inquiry, and possesses the functions such as timed print, calling printing to form.
(7) interconnect 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.
In power station, 5kW number of modules is 30,25kW number of modules 2, wherein:
(1) MCN-5E modules 20, configure 5 groups of heap storage, constitute 100kW sodium sulfur 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 sulfur 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 sulfur 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 are disposed within, open wall and arrange a maintenance channel and set fire door.Conflux cabinet Installation site is easy to packet and maintenance to module string, prevents maloperation near to module heap storage.
Power equipment, circuit, module and the electronic devices and components being related in such scheme in addition to special instruction, according to which The concrete function of realization can select design generally in the art and scheme, it is also possible to select according to actual needs other design and Scheme.
The sodium-sulphur battery Power Station Monitored Control System of this programme devises PCS energy from the Design of Monitoring and Control System of Demonstration Station The function and structure of amount converting system, it is stipulated that the technical parameter of two-way DC converter and double mode energy accumulation current converter, design Energy storage monitor system architecture and hierarchical structure, it is stipulated that the basic function and expanded function of energy storage monitor system body, carry Go out energy-storage system and accessed monitoring system for power distribution networks performance indications, optimize the communication structure of system, and to module mode in heaps Designed.Based on above content and feature, the sodium-sulphur battery Power Station Monitored Control System of this programme has prominent substance special Point and significant progress.
The sodium-sulphur battery Power Station Monitored Control System of this programme is not limited to the content disclosed in specific embodiment, in embodiment The technical scheme of appearance can be extended based on the understanding of those skilled in the art, and those skilled in the art are combined according to this programme The simple alternative that common knowledge is made falls within the scope of this programme.

Claims (10)

1. sodium-sulphur battery Power Station Monitored Control System, is characterized in that including key-course, central control level, scheduling controlling layer on the spot, described Key-course is communicated to connect with the central control level on the spot, and the central control level is communicated to connect with the scheduling controlling layer, institute Stating key-course on the spot includes that power conversion subsystem monitoring module, battery management subsystem, on-site monitoring equipment, power information are adopted Acquisition means, the central control level include collection control server, collection controlled switching system, collection control human-computer interaction device, the scheduling controlling Layer includes some scheduling controlling terminal units, and the scheduling controlling terminal unit includes scheduling controlling server, scheduling controlling work Stand.
2. sodium-sulphur battery Power Station Monitored Control System according to claim 1, it is characterised in that the power conversion subsystem prison Control module includes current transformer voltage monitoring module, current transformer current monitoring module, current transformer temperature monitoring module, converter switches Monitoring module, the current transformer voltage monitoring module gather the DC side of the current transformer, the voltage signal of AC, the change Stream device current monitoring module gathers the current signal of the current transformer, and the current transformer temperature monitoring module gathers the current transformer Temperature signal, the converter switches monitoring module monitors the on off state of the current transformer.
3. sodium-sulphur battery Power Station Monitored Control System according to claim 1, it is characterised in that the battery management subsystem bag Direct current administrative unit, battery management unit are included, the direct current administrative unit is located at confluxes in cabinet, and the battery management unit is located at In sodium sulfur energy-storage module, the battery management unit includes battery voltage sensing module, battery temperature detection control module, described 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, the direct current administrative unit by the data communication interface to host computer, energy conversion system transmitting function signal, The direct current administrative unit receives operating instruction, configuration information, institute from Monitor Computer Control System by the data communication interface State direct current administrative unit by the battery management unit control module to the battery management unit transmit the operating instruction, Configuration information.
4. sodium-sulphur battery Power Station Monitored Control System according to claim 3, it is characterised in that the direct current administrative unit and institute Battery management unit is stated by RS485 bus communications, the direct current administrative unit is changed with the Monitor Computer Control System, energy System is communicated by MODBUS.
5. sodium-sulphur battery Power Station Monitored Control System according to claim 3, it is characterised in that be additionally provided with electricity in the cabinet that confluxes Pond clothes/retired controller, battery supply controller, GPRS device, Terminal Server Client monitor sodium sulfur electricity by the GPRS device The ruuning situation in pond power station.
6. sodium-sulphur battery Power Station Monitored Control System according to claim 1, it is characterised in that the on-site monitoring equipment includes Live camera head, the live camera head include some photographic head, and the live camera head is adopted by the photographic head Collection, storage live video information, the host computer of the on-site monitoring equipment have access to the live video information at any time.
7. sodium-sulphur battery Power Station Monitored Control System according to claim 1, it is characterised in that the power information harvester Including some multifunction electric meters, the voltage of the multifunction electric meter collection distribution network interface, electric current, phase place, frequency, wattful power Rate, reactive power, power factor, active energy, capacity of idle power signal.
8. sodium-sulphur battery Power Station Monitored Control System according to claim 1, it is characterised in that the collection control server includes number According to analysis/memory module, energy-storage system switchgear division control module, fault alarm module, accident treatment module, the number Calculating analysis, more line alarm, reasonableness check, storage are carried out to gathered data according to analysis/memory module, the energy-storage system is opened The respective switch equipment division state of pass equipment division control module control energy-storage system, the charging and discharging state of energy storage device, institute State fault alarm module control trouble-signal and abnormal signal alarming determining with remove, report to the police inquiry, self-defined alert levels, Warning statistical analysiss, warning message storage are by figure, voice, word, printing realization, the accident treatment module control sequence Record, position, inquire about fault message on the spot.
9. sodium-sulphur battery Power Station Monitored Control System according to claim 1, it is characterised in that the collection control human-computer interaction device Including terminal display, Man Machine Interface, Report Server Management server, operator by the Man Machine Interface editor, Modification, confirmation data message, the Report Server Management server is automatically generated, is edited, storing, inquiring about, printing reports.
10. sodium-sulphur battery Power Station Monitored Control System according to claim 1, it is characterised in that the scheduling controlling terminal sets Standby being fetched with dispatch automated system, electrical power distribution automatization system, marketing management system communication link is carried out data, information and exchanges.
CN201611222301.4A 2016-12-27 2016-12-27 Sodium-sulphur battery Power Station Monitored Control System Pending CN106549503A (en)

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