CN104201724B - A kind of small hydropower station generator excitation regulating system and method - Google Patents
A kind of small hydropower station generator excitation regulating system and method Download PDFInfo
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- CN104201724B CN104201724B CN201410369781.1A CN201410369781A CN104201724B CN 104201724 B CN104201724 B CN 104201724B CN 201410369781 A CN201410369781 A CN 201410369781A CN 104201724 B CN104201724 B CN 104201724B
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Abstract
The present invention relates to a kind of small hydropower station generator excitation regulating system and method, mainly including intelligent terminal controller, host computer and slave computer；The intelligent terminal controller includes excitation controller；Host computer includes JACE modules and GPRS module；Slave computer includes EasyIO and two piece of multifunctional digital intelligent electric meter；Described excitation controller carries out the regulation of electric current according to the regulating command of slave computer, so that real-time closed-loop control exciting current, is confined to zone of reasonableness, so as to control small hydropower station generator terminal voltage by exciting current.It makes the process of adjustment of field excitation realize real time implementation, automation, grid-connected to adjust exciting current size by the way of automatic magnetic exciting afterwards, and the size of automatic controlling small water power reactive voltage, the voltage around stabilization grid entry point reduces the influence to network load user's voltage.
Description
Technical field
The present invention relates to a kind of small hydropower station generator excitation regulating system and its adjusting method, in belonging to power distribution network
The technical field that distributing-supplying-energy system is incorporated into the power networks.
Background technology
The many area small hydropower resources of China enrich, but belong to that installed capacity is small, adjustable energy saving greatly due to small hydropower station
, there is the wet season multiple hair, dry season robbed and send out the characteristics of stopping paying out less in the plant without storage of power difference, its electricity volume exists very big
Uncertainty, fluctuating range is huge, and stabilization and power scheduling to power network cause tremendous influence.The power transformation in these power stations
Capacity is smaller.They only have and upper 10kV, 35kV, 110kV power network could stable operations.So showing of generating electricity by way of merging two or more grid systems of small hydropower station
As very universal in mountain area.However, large-scale small hydropower station accesses public network, local load is relatively small, and most of power leads to
Cross circuit outwards to convey, cause idle unreasonable distribution, a series of problems, such as region voltage is higher.
Change regional power grid voltage problem, on the one hand can adjust step-up transformer gear, but part step-up transformer
Do not support that on-load voltage regulation function is transferred the files, it is necessary to have a power failure.Therefore, there is inconvenience in the method, it is impossible to reach the mesh of real-time regulation
's.Therefore, it is our urgent problems that rational transformation and optimization how are carried out to existing small hydropower station.
The content of the invention
The technical problem to be solved in the present invention is to overcome the shortcomings of above-mentioned background technology, there is provided a kind of small hydropower station generator
Excitation control system and method, realize Computer signal control.Using the leading phase operation ability of small hydropower station generator, regulation is encouraged
Magnetic size of current, changes generator terminal voltage, so as to reach the grid-connected front and rear reactive voltage of the small-sized water power of control, stablizes grid-connected
Voltage around point, reduces the influence to network load user's voltage.
The technical solution adopted by the present invention is：A kind of small hydropower station generator excitation regulating system, it is main to include intelligence eventually
Side controller, host computer and slave computer.
The intelligent terminal controller includes excitation controller；Host computer includes the JACE modules and use for Decision Control
In the GPRS module of radio communication；Slave computer includes measuring and encouraging for the EasyIO of input and output treatment and for analog signal
Two pieces of multifunctional digital intelligent electric meters of the execution of magnetic control instruction.
Each node has a host computer in the small hydropower station generator excitation regulating system, and what is mounted on the node is every
Platform generator respectively has a corresponding slave computer；Host computer uploads institute by passage and distribution AVC master station communications to main station system
The real time information for needing, receives the control instruction at main website end, and operation with closed ring is realized between multiple slave computers (VQR), optimization distribution
It is idle that each unit is exported in real time.
Described slave computer is responsible for the execution of measuring signal and excitation con-trol instruction, by regulator generator exciting current,
Realize the automatism voltage control of generator；Controlled with distribution AVC system coordinations under the conditions of online；According to preset under the conditions of offline
Voltage curve independent operating；
The generator metric data of the multifunctional digital intelligent electric meter collection of described slave computer feeds back to host computer, is used as
Data analysis, and instruct the foundation of decision-making.
The excitation controller include generator G1, AC exciter G2, exchange pilot exciter G3, silicon rectifier device D1 and
Silicon controlled rectifier SCR；The exciting current of generator G1 passes through cunning by AC exciter G2 after silicon rectifier device D1 rectifications
Ring is introduced, and the exciting current of AC exciter is then supplied by exchange pilot exciter G3 after silicon controlled rectifier SCR rectifications.
Set end voltage and the input of manual voltage's desired value, the superior voltage scheduling control of AVC main websites are automatically controlled according to locality
System instruction determines generator terminal target voltage, various telemetry intelligence (TELINT)s are obtained from plant stand, obtains various remote signalling from plant stand according to control mode
Signal, obtained from plant stand state of a control, network model, unit parameter, Unit commitment condition, after control strategy, through overvoltage without
Power control computing module, automatically adjusts voltage, finally reaches desired value.
Described excitation controller carries out the regulation of electric current according to the regulating command of slave computer, so that real-time closed-loop is controlled
Exciting current, zone of reasonableness is confined to by exciting current, so as to control small hydropower station generator terminal voltage.
Operation principle of the invention：Information and the operations of power networks such as three remote measurements of unit, remote signalling are obtained with reference to from plant stand
Real-time condition, main station monitoring personnel determine the need for regulation generator terminal electricity according to current operating conditions and dispatching of power netwoks requirement
Pressure, is if desired adjusted, then issue target voltage values by monitor supervision platform.Target voltage values via Zhejiang Province's gateway, by GPRS
Control of intelligent terminal is passed to, control of intelligent terminal makes one according to the target voltage values for receiving to three unit magnitudes of voltage
It is basic to judge, voltage-regulation is determined sequentially by control strategy, finally cause that set end voltage reaches the desired value for issuing, reach scheduling
It is required that.
The beneficial effects of the invention are as follows：Compared with prior art, the beneficial effects of the invention are as follows the process reality of adjustment of field excitation
Existing real time implementation, automation uploads each unit generator terminal parameter by GPRS in real time, facilitates technical staff's decision instruction, it is easy to implement,
Possesses universal promotional value.Exciting current size, automatic controlling small water power are adjusted by the way of automatic magnetic exciting after grid-connected
The size of reactive voltage, the voltage around stabilization grid entry point, reduces the influence to network load user's voltage.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the excitation feedback control principle figure of three-phase excitation system of the present invention.
Fig. 3 is the schematic diagram of adjustment of field excitation method of the present invention.
Specific embodiment
The invention will be further described below, but the invention is not limited in following examples.
As shown in figure 1, the small hydropower station generator excitation regulating system mainly includes intelligent terminal controller, host computer
And slave computer.Excitation controller, the main control process realized to generator excitation regulation, in excitation con-trol screen cabinet；
The slave computer is installed together with excitation controller, is also mounted in screen cabinet.Host computer includes JACE modules and GPRS module,
Wherein JACE modules are used for Decision Control, for the coordination between many units in power plant, by the association between slave computer
Tune realizes the set end voltage control of each generating set, the remote regulating instruction that main website is issued is performed, by GPRS module and provincial company net
Radio communication is realized in pass, realizes the remote monitoring function of main website.And GPRS module is mainly public with power supply using GPRS communication modes
Department's background monitoring system communication, JACE modules are responsible for issuing decision-making regulating command；The Major Function of the host computer receives for (1)
Ammeter collection capacity is simultaneously processed；(2) receive AVC main websites control targe and process；(3) carry out local decision-making, including control decision and
Abnormality processing, event triggering；(4) control instruction is performed, adjustment of field excitation instruction is issued.
Slave computer is responsible for the collection of regulation and metric data, including EasyIO, two pieces of multifunctional digital ammeters.Wherein two pieces
Multifunctional digital intelligent electric meter, be responsible for analog signal measure and excitation con-trol instruction execution, one piece be used for measure set end voltage,
Electric current, active, idle, power factor value；The size of other one block of measurement excitation con-trol electric current and reference voltage.
The EasyIO parts are for input and output treatment.The Automatic Excitation Controller, under automatic magnetic exciting pattern
Adjust reference voltage, realize that set end voltage is steadily controlled, and perform excitation fine setting work(.
Each node in small hydropower station generator excitation regulating system of the present invention has a host computer, on the node
Every generator of mounting has a corresponding slave computer.Host computer passes through passage and distribution AVC master station communications, to system of main website
The real time information united needed for uploading, receives the control instruction at main website end, and realizes operation with closed ring between multiple slave computers (VQR),
It is idle that each unit of optimization distribution is exported in real time.
The present invention realizes the automatism voltage control of generator by regulator generator exciting current.Under the conditions of online with match somebody with somebody
Net AVC system coordination controls；According to preset voltage curve independent operating under the conditions of offline.Additionally, the multi-functional number of slave computer
The generator metric data of word intelligent electric meter collection feeds back to host computer, as data analysis, and the foundation for instructing decision-making.Institute
The distant amount of survey stated includes：Generator terminal voltage, generator generator terminal electric current, generated power is exerted oneself, generator reactive is exerted oneself, send out
Motor power factorExcitation voltage, exciting current, exciter mode of operation (automatic, manual)；It is generator terminal electricity to survey tune amount
Pressure (360-420V) is adjustable.
As shown in Fig. 2 the excitation controller includes that generator G1, AC exciter G2, exchange pilot exciter G3, silicon are whole
Stream device D1 and silicon controlled rectifier SCR；The exciting current of generator G1 is whole through silicon rectifier device D1 by AC exciter G2
Introduced by slip ring after stream, the exciting current of AC exciter is then whole through silicon controlled rectifier SCR by exchange pilot exciter G3
Supplied after stream.
A kind of method of small hydropower station generator excitation regulating system, with reference to from plant stand obtain some remote measurements of unit,
Remote signalling information and operation of power networks real-time condition, AVC main station monitorings personnel are according to current operating conditions and dispatching of power netwoks requirement
Determine the need for adjusting set end voltage, if desired adjust, then target voltage values are issued by monitor supervision platform；Target voltage values are passed through
By Zhejiang Province's gateway, control of intelligent terminal is passed to by GPRS, control of intelligent terminal according to the target voltage values for receiving, if pair
Dry unit magnitude of voltage makes a basic judgement, and voltage-regulation is determined sequentially by control strategy, finally causes that set end voltage reaches
The desired value for issuing, reaches scheduling requirement.
As shown in figure 3, a kind of method of small hydropower station generator excitation regulating system, generator terminal electricity is automatically controlled according to locality
Pressure and the input of manual voltage's desired value, the superior voltage scheduling controlling instruction of AVC main websites determine generator terminal target according to control mode
Voltage, various telemetry intelligence (TELINT)s obtained from plant stand, various remote signals are obtained from plant stand, obtaining state of a control, network mould from plant stand
After type, unit parameter, Unit commitment condition, control strategy, by voltage ＆ var control computing module, automatically adjust voltage,
Finally reach desired value.
Described Automatic Excitation Controller carries out the regulation of electric current according to the regulating command of slave computer, so that real-time closed-loop
Control exciting current, is confined to zone of reasonableness, so as to control small hydropower station generator terminal voltage by exciting current.
Claims (2)
1. a kind of small hydropower station generator excitation adjusting method, the method utilizes following excitation control system, and it mainly includes intelligence
Can terminal control unit, host computer and slave computer；The intelligent terminal controller includes excitation controller；Host computer is included for certainly
The JACE modules and the GPRS module for radio communication of plan control；Slave computer include for input and output treatment EasyIO and
Two pieces of multifunctional digital intelligent electric meters with the execution of excitation con-trol instruction are measured for analog signal；
Each node has a host computer in the small hydropower station generator excitation regulating system, the every hair mounted on the node
Motor respectively has a corresponding slave computer；Host computer passes through passage and distribution AVC master station communications, needed for being uploaded to main station system
Real time information, receives the control instruction at main website end, and operation with closed ring is realized between multiple slave computers (VQR), each machine of optimization distribution
It is idle that group is exported in real time；
Described slave computer is responsible for the execution of measuring signal and excitation con-trol instruction, by regulator generator exciting current, realizes
The automatism voltage control of generator；Controlled with distribution AVC system coordinations under the conditions of online；According to preset electricity under the conditions of offline
Buckle line independent operating；
The excitation controller includes generator G1, AC exciter G2, exchanges pilot exciter G3, silicon rectifier device D1 and controllable
Silicon rectifier device SCR；The exciting current of generator G1 is drawn after silicon rectifier device D1 rectifications by AC exciter G2 by slip ring
Enter, the exciting current of AC exciter G2 is then supplied by exchange pilot exciter G3 after silicon controlled rectifier SCR rectifications；
It is characterized in that described adjustment of field excitation method is：With reference to from plant stand obtain some remote measurements of unit, remote signalling information with
And operation of power networks real-time condition, AVC main station monitorings personnel according to current operating conditions and dispatching of power netwoks requirement determine whether need
Set end voltage is adjusted, is if desired adjusted, then target voltage values are issued by monitor supervision platform；Target voltage values are via Zhejiang Province's net
Close, control of intelligent terminal is passed to by GPRS, control of intelligent terminal according to the target voltage values for receiving, to some unit voltages
Value makes a basic judgement, and voltage-regulation is determined sequentially by control strategy, finally causes that set end voltage reaches the target for issuing
Value, reaches scheduling requirement；
Set end voltage and the input of manual voltage's desired value are automatically controlled according to locality, the superior voltage scheduling controlling of AVC main websites refers to
Make and obtain various telemetry intelligence (TELINT)s according to control mode decision generator terminal target voltage, from plant stand, various remote signals are obtained from plant stand,
After obtaining state of a control, network model, unit parameter, Unit commitment condition, control strategy from plant stand, by voltage ＆ var control
Computing module, automatically adjusts voltage, finally reaches desired value.
2. small hydropower station generator excitation adjusting method according to claim 1, it is characterised in that described excitation con-trol
Device carries out the regulation of electric current according to the regulating command of slave computer, so that real-time closed-loop control exciting current, exciting current is limited to
In zone of reasonableness, so as to control small hydropower station generator terminal voltage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410369781.1A CN104201724B (en) | 2014-07-30 | 2014-07-30 | A kind of small hydropower station generator excitation regulating system and method |
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| CN201410369781.1A CN104201724B (en) | 2014-07-30 | 2014-07-30 | A kind of small hydropower station generator excitation regulating system and method |
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| CN104201724B true CN104201724B (en) | 2017-06-20 |
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| CN109150038B (en) * | 2018-09-30 | 2020-06-16 | 岭澳核电有限公司 | System for judging excitation state of diesel generator of million-kilowatt nuclear power station |
| CN112363432A (en) * | 2020-11-12 | 2021-02-12 | 江西省港航建设投资集团有限公司 | Monitoring system and monitoring method for hydropower station auxiliary equipment |
| CN116404924B (en) * | 2023-06-09 | 2023-09-08 | 南方电网调峰调频发电有限公司检修试验分公司 | Control parameter adjusting device, method, device and medium of excitation system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101710738A (en) * | 2009-12-09 | 2010-05-19 | 中国电力科学研究院 | Automatic voltage control system of power plant substation |
| CN101958622A (en) * | 2009-07-14 | 2011-01-26 | 上海电机学院 | Electric excitation synchronous motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102593860A (en) * | 2012-01-18 | 2012-07-18 | 北京四方继保自动化股份有限公司 | Automatic generation control and automatic voltage control integrated substation system of power plant |
| CN103248058B (en) * | 2013-05-02 | 2015-11-04 | 中国船舶重工集团公司第七一二研究所 | A kind of Magnetically-controlreactor reactor control system |
| CN204089222U (en) * | 2014-07-30 | 2015-01-07 | 国家电网公司 | A kind of small hydropower station generator excitation regulating system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958622A (en) * | 2009-07-14 | 2011-01-26 | 上海电机学院 | Electric excitation synchronous motor |
| CN101710738A (en) * | 2009-12-09 | 2010-05-19 | 中国电力科学研究院 | Automatic voltage control system of power plant substation |
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Address after: 323500 No. 39 Fuxing West Road, Jingning County, Zhejiang, Lishui Applicant after: State Grid Corporation of China Applicant after: Lishui Power Supply Company of State Grid Zhejiang Power Supply Company Applicant after: JINGNING POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER COMPANY Address before: 100033 West Chang'an Avenue, Beijing, No. 86, No. Applicant before: State Grid Corporation of China Applicant before: Lishui Power Supply Company of State Grid Zhejiang Power Supply Company Applicant before: JINGNING POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER COMPANY |
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Inventor after: He Wei Inventor after: Wu Chongju Inventor after: Yang Yifeng Inventor after: Bian Lizhong Inventor after: Lv Chunmei Inventor before: He Wei Inventor before: Wu Chongju Inventor before: Yang Yifeng Inventor before: Bian Lizhong |
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