CN106340967B - Power station low voltage generator intelligent operation device and intelligent operation method - Google Patents
Power station low voltage generator intelligent operation device and intelligent operation method Download PDFInfo
- Publication number
- CN106340967B CN106340967B CN201610913624.1A CN201610913624A CN106340967B CN 106340967 B CN106340967 B CN 106340967B CN 201610913624 A CN201610913624 A CN 201610913624A CN 106340967 B CN106340967 B CN 106340967B
- Authority
- CN
- China
- Prior art keywords
- water level
- guide vane
- generator
- vane opening
- power station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- H02J13/00—Circuit 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
- H02J13/00001—Circuit 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 characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
Landscapes
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Power Engineering (AREA)
- Control Of Water Turbines (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
A kind of power station low voltage generator intelligent operation device and intelligent operation method, processor MCU are separately connected: analog sampling circuit and multiple water level sensors, communicating circuit and long-range monitoring host computer communication；Input and output circuit and output relay and remote signalling detection；Protect circuit and protection executing agency and failure wave-recording；Power circuit and power conditioning circuitry and generator guide vane opening；Storage circuit.Power station low voltage generator intelligent operation method are as follows: real-time detection reservoir height of water level, reservoir current level is judged by processor MCU, low voltage generator guide vane opening is automatically adjusted, to introducing negative-feedback regu- lation mechanism in generator guide vane opening real-time control.The present invention optimizes the generated output of generator, makes the control in power station more intelligent, generates electricity more efficient, realizes the unattended of power station, the automation of operation.
Description
Technical field:
The invention belongs to technical field of power systems, and in particular to a kind of power station low voltage generator intelligent operation device and
Intelligent operation method.
Background technique:
China economy has entered new developing period, maintains sustained and rapid growth in national economy, modernization of industry process
While quickening, resource and environment restriction is becoming tight, and nervous situation occurs in energy supply, and eco-environmental pressure persistently increases.
Electric flux, is the energy generated by different power stations, electric system power station include thermal power station, power station,
Nuclear power station and new energy power station etc., power station are a kind of unique and extensive energy power stations, mainly utilize hydraulic blow side
Formula power generation, in power system architectures, power station not only plays a part of producing electric energy, it also bears flood control, drought resisting, filling
It irrigates, prevent from destroying ecological environment, all multiactions such as reduce environmental pollution, save non-renewable resources.
Hydroelectric development can turn local supplies advantage by investment pull, the development of tax revenue increase and related service industry
Become economic advantages, industrial advantage, other industry developments are driven with this, forms the strong industry cluster of support force, it is strong to promote ground
The development in an all-round way of Fang Jingji.Therefore, greatly develop hydropower to be on the one hand conducive to improve problem of energy crisis, on the other hand have
Conducive to reducing Rural-urban Gap, improving rural area production and living conditions, for promoting local agricultural production, improving farmers' income, accelerate
Shake off poverty paces, promote national unity, maintain social stability, have irreplaceable role.
Smart grid is the inexorable trend of electric power network technique development, is the inevitable choice of socio-economic development, its proposition pushes away
The fast development of each the relevant technologies is moved；Power station, due to hydroelectric seasonal nature and its perturbation, it is easy to destroy
The Real-time Balancing of power grid influences the safe operation of power grid, brings and directly affects to the peak regulation of power grid, tune lotus, therefore, how to fill
The advantage that point utilizes water for producing electric power simultaneously and the requirement that allows the pipe diameter design in power station to reach smart grid, be one it is significant but
Urgent problem to be solved again.
Currently, in the construction of hydropower stations of middle and small scale, the control model of most of low voltage generator group operations is mainly
By low voltage generator protective device and LCU control flow (local control unit) come what is realized；Wherein low voltage generator protection dress
Set the start and stop and protection for being mainly used for generator, LCU control flow be mainly used for the hydraulic turbine, generator, subsidiary engine, transformer, bus,
The control of breaker, disconnecting switch, grounding switch etc.；In water power station control system, although low voltage generator protective device and
LCU screen cabinet can realize that the automatic control of low voltage generator and its other equipment on-line monitorings are controlled with long-range to a certain extent
System, still, in generator active power and reactive power are adjusted, it is still desirable to which power station duty personnel is according to power station water storage level
Situation judge and manually adjust the output power of generator, and in some equipment for not having data recording function,
The parameter of transient data and its operation that power station is broken down all is unable to get preservation, it has not been convenient to the maintenance of unit and plant load
Analysis.
By taking generating set power is adjusted as an example, it is well known that hydroelectric generation, the output power of generator are mainly dynamic by original
What power determined, motive power is determined by guide vane opening and height of water level, i.e., guide vane opening is bigger, water level is higher, and motive power is bigger；
It theoretically analyzes, under the maximum power generation that generator itself can bear, leads the output of the bigger generator of leaf divergence
Power is bigger, but on the other hand guide vane opening determines the size of water yield again, i.e., if water yield is greater than reservoir upstream
Inflow, then water storage pool water level can continue to reduce, and when enough motive power cannot be generated by being reduced to it, generator by sending out originally
Power mode switchs to electric motor mode, and entire generating set system is absorbed by grid power, cannot not only generate electricity, can also be by power grid
Power expends in vain, and therefore, it is necessary to make reservoir by appropriate adjustment guide vane opening when water level decreasing is to certain value
Height of water level reaches a dynamic equilibrium, to obtain continuing power generation process；In this dynamic equilibrium adjustment process, guide vane
Aperture is a very crucial control amount；In medium waterpower generator station, typically by power station duty personnel to height of water level
It is artificial judgement to adjust guide vane opening, the degree of automation is lower, needs duty personnel's all-weather monitor.
Summary of the invention:
The technical problems to be solved by the present invention are: solving the above-mentioned problems of the prior art, and provide a kind of water power
It stands low voltage generator intelligent operation device and intelligent operation method, automates power station power regulation, and can be certain
The generated output for optimizing generator in degree, keeps the pipe diameter design in power station more intelligent, generates electricity more efficient, realizes water power
That stands is unattended, fundamentally realizes operation automation.
The technical solution adopted by the present invention is that: a kind of power station low voltage generator intelligent operation device, with 32 bit DSP monolithics
Machine is processor MCU, and processor MCU is separately connected:
Analog sampling circuit, the output end of analog sampling circuit connect processor MCU, and the input terminal of analog sampling circuit connects
Connect multiple water level sensors of reservoir；
Communicating circuit, processor MCU and communicating circuit connecting communication, communication module are communicated with long-range monitoring host computer again；
Input and output circuit, processor MCU are communicated with input and output circuit connection, and input and output circuit then with output after
Electric appliance and remote signalling detection connection；
Circuit is protected, the output end of circuit is protected to connect protection executing agency and failure wave-recording；
Power circuit, power circuit output divide two-way, connect processor MCU all the way, and another way is exported as DC power supply；
Touch screen, touch screen and processor MCU connection communication.
Power conditioning circuitry, processor MCU and power conditioning circuitry connection communication, power conditioning circuitry output are connected and are adjusted
Save generator guide vane opening；
Storage circuit, processor MCU and memory connection communication.
A kind of intelligent operation method based on above-mentioned power station low voltage generator intelligent operation device, the power generation of power station low pressure
Quick-witted energy running gear is by water level sensor sensed water level height, by processor MCU by sentencing to reservoir current level
Break to automatically adjust power station low voltage generator guide vane opening, to generated output optimizing regulation: when monitoring that water level rises
It waits, low voltage generator intelligent operation device control in power station increases generator guide vane opening, water yield is increased, so that water level maintains
The dynamic equilibrium point new to one promotes generator prime power, increases generator water power；When water level decreasing
Low voltage generator intelligent operation device control in power station reduces guide vane opening, reduces water yield, so that water level maintains new move
State equalization point allows generator continuous service in power generation mode, keeps the generated output in power station, sends out power station low voltage generator
Electrical power adjusts automation, and optimizes the generated output of generator.
In above-mentioned technical proposal, specific method is: when displacement and inflow reach balance, guide vane opening is in power station
X, the Water level trend balance height of reservoir are H；When a certain moment upstream water flow increases, intelligent operation device is in the unit time
Inside monitor that the real time water level H1 of reservoir is in propradation, i.e. H1-H > 0, then it represents that can increase and lead leaf divergence, increase
The generated output of generator；Increase the guide vane opening x1 after generator guide vane opening is adjusted, it is necessary to which satisfaction is able to maintain water storage
The dynamic equilibrium of pool water level, i.e. reservoir inflow and water yield want equal, and just can guarantee in this way will not be because of guide vane opening tune
It has suffered big and water level decreasing occurs；Similarly, when a certain moment upstream water flow is reduced, intelligent operation device is within the unit time
Monitor that the real time water level H1 of reservoir is in decline state, i.e. H1-H < 0, to keep generator to continue working in generating state,
It needs to reduce generator and leads leaf divergence, on the one hand guide vane opening x2 adjusted needs satisfaction to be able to maintain Water level trend flat
On the other hand weighing apparatus also needs to meet water level balance point not less than warning line point, which is critical site, if continued
Lower than this water level point, generator prime power deficiency is likely to occur absorption power rating；Due to upstream water flow be it is random, can not
Accurate measurement, therefore power station low voltage generator intelligent operation device is measuring water storage water by reservoir water level sensor
When the real-time height and variation tendency of position, to negative-feedback regu- lation mechanism is introduced in generator guide vane opening real-time control, by right
When the increase of upstream water flow is judged in the variation of current level measured value, first with Δ x1 increment, guide vane opening is increased in right amount, then
The rate of change of water level after the adjustment, the i.e. variation of Δ H=H1-H are judged by continuing to monitor to water level, if raising speed on water level
Degree is greater than 0 i.e. Δ H > 0, then continues to increase guide vane opening with Δ x1 increment and continue observed stage, judge that height of water level changes, directly
Stability is in water level；Similarly, when upstream water flow is reduced, Δ x2 is decrement, appropriate with Δ x2 decrement first
Generator guide vane opening is reduced, then controls whether to continue to reduce guide vane by the judgement to SEA LEVEL VARIATION rate Δ H=H-H1
Aperture, if drawdown rate of water level is not 0, i.e. Δ H > 0 should then continue to be reduced with Δ x2 and reduce guide vane opening and continue to measure
Water level judges that height of water level changes, until water level is in stability.
In above-mentioned technical proposal, during adjusting generator guide vane opening, concrete operations include:
1., water level rise when, be realize quickly adjustment water level to equalization point, firstly, guide vane opening adjusting step Δ x1
The larger value suitably is taken, it, should be by adjusting step Δ x1 during subsequent adjustment if the water level rate of climb is decreased obviously after adjustment
It reduces, finely tunes；
2., water level decreasing when, to prevent water level decreasing is too fast from motive power deficiency situation occur, first by generator guide vane
Aperture decreasing amount adjustment step delta x2 takes the larger value, and water level is allowed to be in propradation, then realizes fine tuning by less Δ x2 again；
3., the final equalization point of generator guide vane opening adjustment should be specified height of water level area, i.e. water level balance point, greatly
In warning line point and there are certain nargin, prevent from having little time to adjust guide vane opening when water level decreasing, water level is just low rapidly
It, therefore, should be according to the difference of current level and warning line point come with due regard to during each adjustment in critical value region
When the difference of the adjusting step of guide vane opening, i.e. current level and warning line is less, that is to say, that current level soon reaches
When warning line, it should which first adjustment reduces guide vane opening, enables reservoir water storage, and water level is controlled first in specified water
Position height area, then the appropriate adjusting step for increasing guide vane opening, so that current level balances.
In above-mentioned technical proposal, the Rule of judgment that the adjustment of generator guide vane is completed is that SEA LEVEL VARIATION rate Δ H is 0, in reality
In the treatment process of border, Δ H can not be accurate 0 value, therefore the Rule of judgment that the present invention completes to adjust is | Δ H | < ε, wherein
ε is a positive number；ε, which chose conference, reduces degree of regulation；Choose too small fine tuning when will increase water level regulation close to equalization point
Number, so that causing the damage of executing agency because of frequently adjusting to guide vane opening, the selection of ε is needed according to reality
Situation and actual needs are to determine.
In above-mentioned technical proposal, multicomputer when power station multiple generator group generates electricity is adjusted, and needs to guarantee water storage pool water level
Balance and every unit balancing the load, therefore water level rise when, the minimum unit of preferential Load adjustment amount；Under water level
When drop, the preferential highest unit of Load adjustment amount, the load of every unit is judged by guide vane opening, the load of unit
It is bigger to measure more big then guide vane opening；During multicomputer adjustment, need to judge the size of unit load amount, every unit connects
Enter the load signal of other units；Determine the unit preferentially adjusted, adjustment process is identical as single fighter adjustment.
Power station low voltage generator intelligent operation device of the invention and intelligent operation method, are mainly used for power station low pressure
Unit overall-in-one control schema, measurement, protection and a distant place in addition to can be realized low voltage generator control etc. other than basic functions, the device
Can also be by water level sensor come sensed water level height, and then led by the judgement to reservoir current level to automatically adjust
Leaf aperture, to reach to generated output optimizing regulation function: when monitoring that water level rises, device control increases guide vane
Aperture increases water yield, so that water level maintains to a new dynamic equilibrium point to promote generator prime power, increases power generation
Machine water power；Device control reduces guide vane opening when water level decreasing, water yield is reduced, so that water level maintains
New dynamic equilibrium point allows generator continuous service in power generation mode, keeps the generated output in power station.The device can allow water
Power station power regulation reaches automation, and can optimize the generated output of generator in certain degree, allows the pipe in power station
Control mode is more intelligent, generates electricity more efficient, realizes the unattended of power station, fundamentally realize the automatic of operation
Change.
Basic function includes:
1, four remote control function, i.e. telemetering, remote signalling, remote control, remote regulating function:
Telemetering include generator active power, reactive power, power factor (PF), generator terminal electric current, set end voltage, exciting current,
Excitation voltage；Remote signalling includes gate positing, generator terminal circuit breaker position, position of strobe, degaussing switch position, protection signal etc.；It is distant
Control includes start and stop remote control etc.；Remote regulating includes generated power and idle.
2, unit electric fault, mechanical breakdown are detected:
Differential, loss of excitation, vibration, the failures such as temperature rise, so that generator is continually and steadily run including detection generator.
3, unit load and water level conditions are monitored:
Monitoring outlet circuit breaker current is referred mainly to obtain load condition, is obtained by reading the signal of water level sensor
Water storage pool water level.
4, fault warning, accidental shutdown, fault data upload:
Autostop and its fault message upload to background monitoring system after fault warning setting and fault warning.
5, prevent various malfunction and misaction:
6, water level is opened automatically, is shut down:
Start electrical power generators automatically when water level reaches power generation water level threshold value, when water level decreasing to shutdown water level threshold
Autostop when value.
7, generator protection function:
Including three sections of overcurrent protections of generator, generator overload protection, generator under-voltage protection, generator overvoltage
Protection, generator unit stator overtemperature prote, generator overfrequency and underfrequency protection etc..
8, active power automatically adjusts:
Guide vane opening is automatically adjusted by monitoring reservoir real time water level, and then is reached to generated output optimizing regulation.
9, failure wave-recording.
10, GPRS clock synchronization and network clock synchronization.
11, a distant place communicates, and data can be supported to upload and distant place power dispatching.
Detailed description of the invention:
Fig. 1 is circuit structure block diagram of the present invention；
Fig. 2 is that low voltage generator single fighter guide vane opening in power station adjusts flow chart；
Fig. 3 is that low voltage generator multicomputer guide vane opening in power station adjusts flow chart.
Specific embodiment:
Referring to Fig. 1, Fig. 2, Fig. 3, a kind of power station low voltage generator intelligent operation device of the present invention, with 32 bit DSP monolithics
Machine is processor MCU, and processor MCU is separately connected:
Analog sampling circuit, the output end of analog sampling circuit connect processor MCU, and the input terminal of analog sampling circuit connects
Connect multiple water level sensors of reservoir；
Communicating circuit, processor MCU and communicating circuit connecting communication, communication module are communicated with long-range monitoring host computer again；
Input and output circuit, processor MCU are communicated with input and output circuit connection, and input and output circuit then with output after
Electric appliance and remote signalling detection connection；
Circuit is protected, the output end of circuit is protected to connect protection executing agency and failure wave-recording；
Power circuit, power circuit output divide two-way, connect processor MCU all the way, and another way is exported as DC power supply；
Touch screen, touch screen and processor MCU connection communication.
Power conditioning circuitry, processor MCU and power conditioning circuitry connection communication, power conditioning circuitry output are connected and are adjusted
Save generator guide vane opening；
Storage circuit, processor MCU and memory connection communication.
A kind of intelligent operation method based on above-mentioned power station low voltage generator intelligent operation device, the power generation of power station low pressure
Quick-witted energy running gear is by water level sensor sensed water level height, by processor MCU by sentencing to reservoir current level
Break to automatically adjust power station low voltage generator guide vane opening, to generated output optimizing regulation: when monitoring that water level rises
It waits, low voltage generator intelligent operation device control in power station increases generator guide vane opening, water yield is increased, so that water level maintains
The dynamic equilibrium point new to one promotes generator prime power, increases generator water power；When water level decreasing
Low voltage generator intelligent operation device control in power station reduces guide vane opening, reduces water yield, so that water level maintains new move
State equalization point allows generator continuous service in power generation mode, keeps the generated output in power station, sends out power station low voltage generator
Electrical power adjusts automation, and optimizes the generated output of generator；Specific method is: power station reaches in displacement and inflow
When balance, guide vane opening x, the Water level trend balance height of reservoir is H；When a certain moment upstream water flow increases, intelligence
Running gear is monitored at the real time water level H1 of reservoir within the unit time in propradation, i.e. H1-H > 0, then it represents that can be with
Leaf divergence is led in increasing, increases the generated output of generator；Increase the guide vane opening x1 after generator guide vane opening is adjusted, it is necessary to
Meet the dynamic equilibrium for being able to maintain water storage pool water level, i.e. reservoir inflow and water yield wants equal, just can guarantee in this way
It will not be adjusted because of guide vane opening excessive and water level decreasing occur；Similarly, when a certain moment upstream water flow is reduced, intelligence is transported
Luggage, which is set, to be monitored within the unit time in decline state, i.e. H1-H < 0 at the real time water level H1 of reservoir, to keep generator
It continues working in generating state, it is desirable to reduce generator leads leaf divergence, on the one hand guide vane opening x2 adjusted needs to meet
It is able to maintain Water level trend balance, on the other hand also needs to meet water level balance point not less than warning line point, which is
Critical site, if being consistently less than this water level point, generator prime power deficiency is likely to occur absorption power rating；Due to upstream
Water flow be it is random, can not accurately measure, thus power station low voltage generator intelligent operation device pass through water storage pool water level
Sensor is negative to introducing in generator guide vane opening real-time control to measure the real-time height of water storage pool water level and when variation tendency
Feed-back regulatory mechanism, when judging the increase of upstream water flow by the variation to current level measured value, first with Δ x1 increasing
Amount is appropriate to increase guide vane opening, then judges the rate of change of water level after the adjustment, i.e. Δ H=H1-H by continuing to monitor to water level
Variation, if the water level rate of climb is greater than 0, i.e. Δ H > 0 is then continued to be increased guide vane opening with Δ x1 increment and continues observation water
Position judges that height of water level changes, until water level is in stability；Similarly, when upstream water flow is reduced, Δ x2 is to subtract
Amount, which is first that decrement is appropriate with Δ x2, reduces generator guide vane opening, then passes through the judgement to SEA LEVEL VARIATION rate Δ H=H-H1
It controls whether to continue to reduce to lead leaf divergence, if drawdown rate of water level is not 0, i.e. Δ H > 0 should then continue with Δ x2 decrement
It reduces guide vane opening and continues to measure water level, judge that height of water level changes, until water level is in stability.
During adjusting generator guide vane opening, concrete operations include:
1., water level rise when, be realize quickly adjustment water level arrive equalization point, guide vane opening adjusting step Δ x1 first fit
When taking the larger value, if the water level rate of climb is decreased obviously after adjustment, during subsequent adjustment, adjusting step Δ x1 should be subtracted
It is few, it finely tunes；
2., water level decreasing when, to prevent water level decreasing is too fast from motive power deficiency situation occur, first by generator guide vane
Aperture decreasing amount adjustment step delta x2 takes the larger value, and water level is allowed to be in propradation, then again by less decrement Δ x2 come real
Now finely tune；
3., the final equalization point of generator guide vane opening adjustment should be specified height of water level area, i.e. water level balance point, greatly
In warning line point and there are certain nargin, prevent from having little time to adjust guide vane opening when water level decreasing, water level is just low rapidly
It, therefore, should be according to the difference of current level and warning line point come with due regard to during each adjustment in critical value region
When the difference of the adjusting step of guide vane opening, i.e. current level and warning line is less, that is to say, that current level soon reaches
When warning line, it should which first adjustment reduces guide vane opening, enables reservoir water storage, and water level is controlled first in specified water
Position height area, then the appropriate adjusting step for increasing guide vane opening, so that current level balances.
The Rule of judgment that the adjustment of generator guide vane is completed is that SEA LEVEL VARIATION rate Δ H is 0, in actual process, Δ H
Can not be accurate 0 value, therefore the Rule of judgment adjusted is | Δ H | < ε, wherein ε is a positive number；ε chose conference drop
Low adjustment precision；Too small fine tuning number when will increase water level regulation close to equalization point is chosen, so that because to guide vane opening frequency
Numerous adjusting and cause the damage of executing agency, therefore the selection of ε needs to determine with actual needs according to the actual situation；Water power
Multicomputer when multiple generator group of standing generates electricity is adjusted, and needs to guarantee the balance of water storage pool water level and the balancing the load of every unit,
Therefore when water level rises, the minimum unit of preferential Load adjustment amount；In water level decreasing, preferential Load adjustment amount is highest
The load of unit, every unit judges that the more big then guide vane opening of the load of unit is bigger by guide vane opening；More
During unit adjustment, need to judge the size of unit load amount, every unit accesses the load signal of other units；It determines
The unit preferentially adjusted, adjustment process are identical as single fighter adjustment.
1 pair of built-up circuit of the invention is described further with reference to the accompanying drawing:
(1) processor MCU
Processor MCU is the nucleus module of operation, the troubleshooting, communication of device, and main function is analog acquisition amount
Accurately calculate, intake scanning, the logic judgment of protective number, device Communication processing, data storage etc., be device operation process
In the core of various information exchanges and input and output and its all control commands.
(2) analog sampling circuit
Major function is IA, IB, IC, Ua, Ub, Uc, COS ф, F and its water power of the device to low-tension unit three-phase alternating current
The filtering and sampling for the analog quantitys such as water storage pool water level h of standing.Module includes alternating current, voltage and its level measuring circuit, a side
Face is used to secondary system side electric current, voltage being converted to weak electric signal, is conveyed to MCU module and is AD converted, and plays strong and weak electricity
Buffer action；On the other hand it for converting simulation electric potential signal for reservoir water level signal, is transported to MCU module and carries out A/D
Conversion；By accurately calculating the exact value for obtaining voltage and current and water level in MCU.
(3) input and output circuit
Major function for device remote signalling open into the signals such as acquisition, remote signalling displacement, accident remote signalling, normal remote control provide interface and
Its measure loop can at most support 32 tunnel intakes and the 9 road amounts of outputing, and open incoming interface voltage support AC/DC220V.
(4) circuit is protected
Major function provides trip protection Acquisition Circuit and exit circuit for device, and Acquisition Circuit is electric by secondary system side
Stream, voltage are converted to weak electric signal, are conveyed to MCU module and are AD converted, and play strong and weak electricity buffer action；Trip exit circuit
Main to provide device trip(ping) circuit, the control breaker for power station provides tripping outlet when a failure occurs.Protective module can be real
Existing low voltage generator protection, including fast tripping protection, three sections of overcurrent protections, inverse-time overcurrent protection, stator overload, overvoltage guarantor
Shield, frequency anomaly protection etc..
(5) power circuit
Voltage needed for the AC and DC power supply that outside provides is converted to protective device work by power module, output+5V, ±
9V and+24V is device operation power plant module.
(6) communicating circuit
Predominantly device provides 485 communications, TCP/IP communication interface and peripheral circuit, facilitate device and external devices or
The data of device acquisition and fault message are produced and its are received remote operation order by host computer communication, and realization device is remotely controlled function
Energy.
(7) touch screen
The 32 ARM chip microcontrollers produced by PHILIPS Co., speed is fast, and piece internal storage capacity is big, network interface energy
Power is strong, and using real-time multi-task operating system, the real-times such as interface, network are good, and major function provides the man-machine of close friend for device
Interactive interface, by device acquire data information show, and provide it is touch be manually entered, can be convenient change device
Protection and communications parameter.
(8) power conditioning circuitry
Major function provides power control outlet for device, and it is flat that power station power is adjusted by the control to guide vane opening amount
Weighing apparatus point has the function that improve generating efficiency to optimize the active power in power station.
(9) storage circuit
Major function is the storage of device collecting data information and its system parameter, and collecting data information includes history remote signalling
Information, failure wave-recording shape information, fault trip information, fault warning information etc. are conjugated, system parameter includes protection soft pressing plate, leads to
Interrogate parameter, protection seting parameter etc.；Memory module can be reserved for no less than 500 recent occurrence part reports and operation report,
At least support 10 sets of protection definite value storages and modification.
Claims (4)
1. a kind of intelligent operation method of power station low voltage generator intelligent operation device, it is characterised in that: power station low pressure hair
Intelligent motor running gear is passed through by processor MCU to reservoir current level by water level sensor sensed water level height
Judgement to automatically adjust power station low voltage generator guide vane opening, to generated output optimizing regulation: when monitor water level rise
When, low voltage generator intelligent operation device control in power station increases generator guide vane opening, water yield is increased, so that water level is tieed up
It holds to a new dynamic equilibrium point, promotes generator prime power, increase generator water power；When water level decreasing
Wait power station low voltage generator intelligent operation device control reduce guide vane opening, reduce water yield so that water level maintain it is new
Dynamic equilibrium point allows generator continuous service in power generation mode, keeps the generated output in power station, makes power station low voltage generator
Generated output adjusts automation, and optimizes the generated output of generator；Specific method is: power station is reached in displacement and inflow
To when balancing, guide vane opening x, the Water level trend balance height of reservoir is H；When a certain moment upstream water flow increases,
Intelligent operation device is monitored at the real time water level H1 of reservoir within the unit time in propradation, i.e. H1-H > 0, then it represents that
It can increase and lead leaf divergence, increase the generated output of generator；Increase the guide vane opening x1 after generator guide vane opening is adjusted,
Necessarily meet the dynamic equilibrium for being able to maintain water storage pool water level, i.e. reservoir inflow and water yield wants equal, such ability
Guarantee to adjust because of guide vane opening excessive and water level decreasing occur；Similarly, when a certain moment upstream water flow is reduced, intelligence
Energy running gear is monitored within the unit time in decline state, i.e. H1-H < 0 at the real time water level H1 of reservoir, to keep hair
Motor is continued working in generating state, it is desirable to reduce generator leads leaf divergence, on the one hand guide vane opening x2 adjusted needs
Satisfaction is able to maintain Water level trend balance, on the other hand also needs to meet water level balance point not less than warning line point, the water level
Point is critical site, if being consistently less than this water level point, generator prime power deficiency is likely to occur absorption power rating；Due to
Upstream water flow be it is random, can not accurately measure, therefore power station low voltage generator intelligent operation device is passing through reservoir
Water level sensor is to measure the real-time height of water storage pool water level and when variation tendency, to drawing in generator guide vane opening real-time control
Enter negative-feedback regu- lation mechanism, when judging the increase of upstream water flow by the variation to current level measured value, first with Δ
X1 increment increases guide vane opening in right amount, then judges the rate of change of water level after the adjustment, i.e. Δ H=by continuing to monitor to water level
The variation of H1-H is then continued to be increased guide vane opening with Δ x1 increment and be continued if the water level rate of climb is greater than 0, i.e. Δ H > 0
Observed stage judges that height of water level changes, until water level is in stability；Similarly, when upstream water flow is reduced, Δ x2
For decrement, first with Δ x2 be reduced reduce generator guide vane opening, then by the judgement to SEA LEVEL VARIATION rate Δ H=H-H1 come
It controls whether to continue to reduce to lead leaf divergence, if drawdown rate of water level is not 0, i.e. Δ H > 0 should continue to subtract with Δ x2
Lack guide vane opening and continue measurement water level and judges water level, height change, until water level is in stability.
2. intelligent operation method according to claim 1, it is characterised in that: 1., water level is when rising, to realize fast velocity modulation
Whole water level is to equalization point, and guide vane opening adjusting step Δ x1 first takes the larger value, after adjustment if under the water level rate of climb is obvious
Adjusting step Δ x1 should then be reduced during subsequent adjustment, be finely tuned by drop；
2., water level decreasing when, to prevent water level decreasing is too fast from motive power deficiency situation occur, first by generator guide vane opening
Decreasing amount adjustment step delta x2 takes the larger value, and water level is allowed to be in propradation, then micro- to realize by less decrement Δ x2 again
It adjusts；
3., generator guide vane opening adjustment final equalization point should be specified height of water level area, i.e., water level balance point be greater than police
Water level point and there are certain nargin is guarded against, prevents from having little time to adjust when water level decreasing guide vane opening, water level is just rapidly lower than facing
Therefore dividing value region considers guide vane in requisition for according to the difference of current level and warning line point during each adjustment
When the difference of the adjusting step of aperture, i.e. current level and warning line is less, that is to say, that current level soon reaches warning
When water level, it should which first adjustment reduces guide vane opening, enables reservoir water storage, water level control first in specified water level height
Area is spent, then increases the adjusting step of guide vane opening, so that current level balances.
3. intelligent operation method according to claim 1, it is characterised in that: the Rule of judgment that the adjustment of generator guide vane is completed
Be SEA LEVEL VARIATION rate Δ H be 0, in actual process, Δ H can not be accurate 0 value, therefore complete adjustment judgement
Condition is | Δ H | < ε, wherein ε is a positive number；ε, which chose conference, reduces degree of regulation；It chooses and too small will increase water level tune
Fine tuning number when saving close to equalization point, so that the damage of executing agency is caused because of frequently adjusting to guide vane opening, ε
Selection, need to determine with actual needs according to the actual situation.
4. intelligent operation method according to claim 1, it is characterised in that: multimachine when power station multiple generator group generates electricity
Group is adjusted, and needs to guarantee the balance of water storage pool water level and the balancing the load of every unit, therefore when water level rises, preferential to adjust
The minimum unit of load；In water level decreasing, the preferential highest unit of Load adjustment amount, the load of every unit passes through
Guide vane opening judges that the more big then guide vane opening of the load of unit is bigger；During multicomputer adjustment, need to judge machine
The size of group load, every unit access the load signal of other units；Determine the unit preferentially adjusted, adjustment process
It is identical as single fighter adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610913624.1A CN106340967B (en) | 2016-10-20 | 2016-10-20 | Power station low voltage generator intelligent operation device and intelligent operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610913624.1A CN106340967B (en) | 2016-10-20 | 2016-10-20 | Power station low voltage generator intelligent operation device and intelligent operation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106340967A CN106340967A (en) | 2017-01-18 |
| CN106340967B true CN106340967B (en) | 2019-01-15 |
Family
ID=57840507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610913624.1A Active CN106340967B (en) | 2016-10-20 | 2016-10-20 | Power station low voltage generator intelligent operation device and intelligent operation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106340967B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941203A (en) * | 2017-11-29 | 2018-04-20 | 张建洲 | A kind of intellectual faculties and method |
| CN110460117A (en) * | 2019-09-05 | 2019-11-15 | 湖南江河机电自动化设备股份有限公司 | A kind of middle small plant's intelligent optimization electricity generation system |
| CN116979623B (en) * | 2023-09-22 | 2023-12-08 | 湖南江河能源科技股份有限公司 | Hydropower station autonomous optimization power generation control strategy |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011076242A1 (en) * | 2009-12-21 | 2011-06-30 | Siemens Aktiengesellschaft | Expanded power automation system |
| CN203847320U (en) * | 2013-11-04 | 2014-09-24 | 南京南瑞集团公司 | Electron-type guide vane master controller using single chip microcomputer and electric feedback |
| CN105045235A (en) * | 2015-07-15 | 2015-11-11 | 重庆市同扬电气设备有限公司 | Cascade power station remote control system based on intelligent cloud technology |
| CN206117312U (en) * | 2016-10-20 | 2017-04-19 | 湖南长高思瑞自动化有限公司 | Power station low voltage generator intelligent operating device |
-
2016
- 2016-10-20 CN CN201610913624.1A patent/CN106340967B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011076242A1 (en) * | 2009-12-21 | 2011-06-30 | Siemens Aktiengesellschaft | Expanded power automation system |
| CN203847320U (en) * | 2013-11-04 | 2014-09-24 | 南京南瑞集团公司 | Electron-type guide vane master controller using single chip microcomputer and electric feedback |
| CN105045235A (en) * | 2015-07-15 | 2015-11-11 | 重庆市同扬电气设备有限公司 | Cascade power station remote control system based on intelligent cloud technology |
| CN206117312U (en) * | 2016-10-20 | 2017-04-19 | 湖南长高思瑞自动化有限公司 | Power station low voltage generator intelligent operating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106340967A (en) | 2017-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8659186B2 (en) | Methods and systems for controlling a power conversion system | |
| CN105515027B (en) | A kind of configurable energy storage microgrid control method of load curve | |
| CN103187735B (en) | Bidirectional intelligent gateway device for distributed new energy grid connection | |
| US20120323396A1 (en) | Hybrid electric generating power plant that uses a combination of real-time generation facilities and energy storage system | |
| CN105515083A (en) | Electric vehicle group charging microgrid control method supporting secure dynamic capacity-increase | |
| CN105529793A (en) | Control method for electromobile group-charging microgrid simultaneously serving as emergency power supply | |
| CN102355057A (en) | Computer monitoring method for microgrid system | |
| CN104052159A (en) | Energy management controller used for wind and light storage micro-grid system | |
| CN106230024B (en) | The electric system power failure Risk Calculation method of the field containing double-fed fan motor | |
| CN104682436B (en) | Energy storage system micro-grid capable of inhibiting power fluctuation | |
| CN106340967B (en) | Power station low voltage generator intelligent operation device and intelligent operation method | |
| CN103366064A (en) | Test method for parameters of wind farm dynamic model | |
| CN103728949B (en) | A kind of Hydropower Unit integrated control unit | |
| CN104505855A (en) | Online evaluation system for grid-connected characteristic of wind power plant | |
| CN109728647A (en) | A kind of wisdom island microgrid energy management system | |
| CN104779644A (en) | Wind power plant grid connection stability assessment method | |
| Thomas et al. | Distribution automation leading to a smarter grid | |
| CN103793855A (en) | Construction method for real-time electricity supply and demand equilibrium index of regional grid | |
| CN103592531A (en) | Method and system for detecting parameters of wind power plant static var generator | |
| CN105445580A (en) | Test method of reactive power compensation device response time | |
| CN204761158U (en) | Case of supporting photovoltaic power's electric energy quality on -line monitoring becomes measurement and control device | |
| CN103001236A (en) | Wind turbine generator reactive power regulation method and system based on air quenching cooler (AQC) of wind power plant | |
| CN102778863B (en) | A kind of based on programmable computer controller unit bay automatic monitored control system | |
| CN206117312U (en) | Power station low voltage generator intelligent operating device | |
| CN110165786A (en) | A kind of intelligent low-pressure photovoltaic counnter attack power transmission monitor control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |