CN106438187B - Working condition control device and its control method in a kind of pump turbine governing system - Google Patents
Working condition control device and its control method in a kind of pump turbine governing system Download PDFInfo
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- CN106438187B CN106438187B CN201610790004.3A CN201610790004A CN106438187B CN 106438187 B CN106438187 B CN 106438187B CN 201610790004 A CN201610790004 A CN 201610790004A CN 106438187 B CN106438187 B CN 106438187B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/10—Purpose of the control system
- F05B2270/101—Purpose of the control system to control rotational speed (n)
- F05B2270/1014—Purpose of the control system to control rotational speed (n) to keep rotational speed constant
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Water Turbines (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention discloses working condition control device and its control method in a kind of pump turbine governing system, device includes：Main control valve, shuttle valve inserting valve group, inserted valve, operating mode selector valve, servomotor, sequence closing valve group, regulating ring of wicket gate, non-return valve, electrichydraulic control oil input port, pressure oil input port, 3 throttling oil discharge outlets, the oily input port of control, throttle valve；The selection of operating mode is first carried out by operating mode selector valve, when carrying out removal of load under pump turbine group fault condition later, the cooperation of valve group, inserted valve etc. is inserted by main control valve and shuttle valve, realizes the guide vanes closed in steps under the operating mode.Operating mode selector valve and shuttle valve inserting valve group have been installed in the invention additional in a device; realize the different Closing Laws of same equipment under different operating modes; the pressure for reducing load rejection under multi-state rises; expand the traffic coverage and range of unit; the reliable protection improved to unit itself has the advantages that simple in structure, at low cost, control is accurate.
Description
Technical field
The invention belongs to technical field of hydroelectric generation, more particularly to operating conditions fill in a kind of pump turbine governing system
It sets and its control method, the present invention can be controlled according to pump turbine governing system multi-state difference sequence closing rule
System.
Background technology
Currently, the large pump hydraulic turbine is in order to ensure unit during removal of load on its percentage of speed rise and maximum pressure
The rate of liter within the limits prescribed, ensures the safety of unit water channel, needs the best shut-in time for calculating guide vane to ensure unit
Safe operation.After calculating the best shut-in time of guide vane, the guide vane of pump turbine is closed curve and is just needed according to both
Fixed distributor closing law carries out.Since the realization of the curve needs to realize by mechanical equipment, while needing subtracting as possible
Two kinds of direction of rotation of pump turbine, when pump turbine is in multi-state state, guide vane are realized in the case of few equipment
Sequence closing becomes the where the shoe pinches of research and development.
In the prior art, the governing system of pump turbine only according to most bad working environments carries out that corresponding guide vane is calculated
Closing Law, then no matter which kind of operating mode is all controlled using this distributor closing law, and this scheme is set in identical water channel
Under the conditions of meter, the range of operation and traffic coverage of unit are limited, it is insufficient to the protection of unit and equipment, it is easily damaged equipment.
Accordingly, it is desirable to provide a kind of conversion under the different operating modes such as water pump/power generation, to adapt to different operating mode sequence closings
The control device and control method of rule.
Invention content
The shortcomings that it is an object of the present invention to overcome the prior art and deficiency, provide a kind of pump turbine speed governing system
Working condition control device in system, the device, using the logic switch of hydraulic circuit between valve, are realized by the way that several valves are arranged
Multi-state difference sequence closing has the advantages that easy to operate, safe and reliable.
It is another object of the present invention to, with deficiency, be provided a kind of based on above-mentioned water pump water the shortcomings that overcoming the prior art
The control method of working condition control device in turbine governing system, this method realize multi-state not by the control to each valve
Same sequence closing has the advantages that easy to operate, safe and reliable.
The purpose of the present invention is realized by the following technical solution：Operating conditions fill in a kind of pump turbine governing system
It sets, including main control valve, shuttle valve inserting valve group, inserted valve, operating mode selector valve, servomotor, sequence closing valve group, wicket gate control
Ring, non-return valve, electrichydraulic control oil input port, pressure oil input port, three throttling oil discharge outlets, the oily input port of control, throttle valve, institute
The input terminal for stating main control valve is connect with electrichydraulic control oil input port, pressure oil input port respectively by pipeline, and output end passes through
Pipeline is connect with servomotor, non-return valve, throttle valve respectively；The servomotor is connect with non-return valve, throttle valve respectively by pipeline.
The oily input port of the control is connect with the input terminal of operating mode selector valve, sequence closing valve group respectively by pipeline, institute
The output end for stating operating mode selector valve inserts valve group with shuttle valve respectively by pipeline, inserted valve is connect, the output of sequence closing valve group
End inserts valve group with the shuttle valve by pipeline and connect.
In three throttling oil discharge outlets, first throttle oil discharge outlet inserts valve group, inserted valve, main control valve by pipeline and shuttle valve
Connection, the second throttling oil discharge outlet insert valve group with shuttle valve by pipeline and connect, and third throttling oil discharge outlet passes through pipeline and inserted valve
Connection.
Preferably, sequence closing valve group top is equipped with a cam, and the servomotor is equipped with an incline bench, is connecing
When power device acts, cam can be along inclined-plane up/down steps.The control of speed may be implemented using this structure.
Preferably, the operating mode selector valve uses bistable electromagnetic valve.
Preferably, the shuttle valve inserting valve group is composed of shuttle valve and inserted valve.
Preferably, the sequence closing valve group uses spring return type hydraulic valve.
Preferably, the servomotor is equipped with 3 oil pipes, and wherein two are oil exit pipe when guide vane is closed, and one is oil inlet
Pipe.An oil exit pipe will be blocked when servomotor internal piston moves to certain position, realizes that buffering is closed to reduce oil drain quantity
It closes.
A kind of control method based on working condition control device in above-mentioned pump turbine governing system, including step：In water
According to machine group command before the booting of pump turbine unit, the operating condition of unit is selected by operating mode selector valve, is got rid of in unit failure
By the switching of respective valves in control piper when load, realizes and closed according to different guide vanes under same unit difference operating mode direction
Curve is closed.
Specifically, including the following steps：
(1) by operating mode selector valve select current pump turbine be operated in water pump direction operating mode (including pumping operation mode,
Draw water working conditions of phrase modulation etc.) or hydraulic turbine direction operating mode (including generating operation mode, turbine condenser mode operating mode etc.)；If selecting water pump side
To operating mode, step (2) is executed, otherwise, executes step (3)；
(2) operating mode selector valve right chamber is connected, and pressure oil acts on shuttle valve by operating mode selector valve and inserts valve group epicoele, and makes
It is closed；Inserted valve is opened, and the oil return of servomotor is by T mouths of main control valve through first throttle oil discharge outlet and inserted valve control
Third throttling oil discharge outlet flows back to fuel tank；After servomotor is closed to certain position, sequence closing valve group action, pressure oil connects shuttle
Variation is not generated after valve inserting valve group, and oil extraction speed is constant；
(3) operating mode selector valve left chamber is connected, and pressure oil acts on inserted valve epicoele by operating mode selector valve, and makes its pass
It closes；Shuttle valve inserts valve group and opens, and servomotor oil return inserts valve group by the T mouths of main control valve through first throttle oil discharge outlet, shuttle valve
Second throttling oil discharge outlet of control flows back to fuel tank；After servomotor is closed to certain position, the action of sequence closing valve group compresses shuttle
Valve inserts valve group, and servomotor oil return flows back to fuel tank by first throttle oil discharge outlet, closes and realizes first quick and back slow.
Preferably, it in the step (2), is required to pre-set pump turbine water pump direction work according to regulation assurance calculation
Guide vane under condition closes curve, is arranged with first throttle in the subsequent third throttling oil discharge outlet of inserted valve according to curve adjustment setting
Flow regulator pieces caliber size on hydraulic fluid port.To meet the Closing Law under the operating mode of unit water pump direction.
Further, it includes quick closing valve section and slow pass that the guide vane under the operating mode of pump turbine water pump direction, which closes curve,
Section, this two sections control method are as follows：
(2-1) quick closing valve section：Pressure oil connects shuttle valve and inserts valve group, cut-out the second throttling oil discharge outlet, and servomotor is closed in chamber
The third that is controlled by inserted valve of oil extraction throttle oil discharge outlet and first throttle oil discharge outlet, and oil drain quantity is equal to the two oil discharge outlets
Flow summation；When servomotor is closed to specified aperture, sequence closing valve group carries out oil circuit switching, the segmented closing of pressure oil
Shuttle valve inserting valve group is switched to after valve group, oil extraction speed does not change.By adjusting third throttling oil discharge outlet and first throttle
Flow regulator pieces caliber size on oil discharge outlet realizes the quick closing valve section Closing Law of guide vane under the operating mode of water pump direction；
(2-2) closes section slowly：The cross-sectional flow area of throttle valve is more than first throttle oil discharge outlet but less than third throttling oil discharge outlet
With first throttle oil discharge outlet summation, the slow pass section Closing Law of guide vane under the operating mode of water pump direction is realized by adjusting throttle valve.
Preferably, it in the step (3), is required to pre-set pump turbine hydraulic turbine direction according to regulation assurance calculation
Guide vane under operating mode closes curve, according to curve adjustment setting in the subsequent second throttling oil discharge outlet of inserted valve and first throttle
Flow regulator pieces caliber size on oil discharge outlet.To meet the Closing Law under the operating mode of Turbines direction.
Further, guide vane under the operating mode of pump turbine hydraulic turbine direction close curve include quick closing valve section, it is slow
It closes section and breeze way, this three sections control method is as follows：
(3-1) quick closing valve section：Pressure oil connects inserted valve, cut-out third throttling oil discharge outlet, and servomotor oil drain quantity is inserted for shuttle valve
The flow summation for filling the second throttling oil discharge outlet and first throttle oil discharge outlet of valve group control, realizes guide vane under the operating mode of hydraulic turbine direction
Quick closing valve section Closing Law；
(3-2) closes section slowly：When servomotor is closed to specified aperture, sequence closing valve group carries out oil circuit switching, pressure oil
Shuttle valve is acted on by sequence closing valve group and inserts valve group epicoele, and cut-out the second throttling oil discharge outlet, servomotor oil drain quantity is first
The flow of throttling oil discharge outlet, realizes the slow pass section Closing Law of guide vane under hydraulic turbine condition；
(3-3) breeze way：The position for setting two oil exit pipes on servomotor, when servomotor internal piston moves to a positioning
An oil exit pipe will be blocked by setting, and then reduce the Closing Law that oil drain quantity realizes breeze way.
Compared with prior art, the present invention having the following advantages that and advantageous effect：
1, the present invention can realize two kinds of direction of rotation of pump turbine in the case where reducing equipment to the greatest extent, realize water pump
Operating mode and hydraulic turbine condition have the advantages that simple in structure, at low cost, control is accurate.
2, automatically selecting for pump operating condition and hydraulic turbine condition etc. may be implemented in the present invention, and according to preset different closings
Curve, Closing Law carry out sequence closing, avoid under any operating mode in the prior art with guide vane shut-in time longest pass
The case where rule is closed is closed, realize can reduce multi-state under different operating modes with most fast speed guide vane closing
The pressure of lower load rejection rises, and expands the traffic coverage and range of unit, reliably improves the protection to unit itself,
Have the advantages that simple in structure, at low cost, control is accurate.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present embodiment device.
Guide vane closes curve when Fig. 2 is removal of load under the operating mode of the present embodiment hydraulic turbine direction.
Guide vane closes curve when Fig. 3 is removal of load under the operating mode of the present embodiment water pump direction.
Specific implementation mode
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
Embodiment 1
Referring to Fig. 1, working condition control device in the present embodiment pump turbine governing system, including main control valve 1, shuttle valve are inserted
Fill valve group 2, inserted valve 3, operating mode selector valve 4, servomotor 5, sequence closing valve group 6, regulating ring of wicket gate 7, non-return valve 8, electro-hydraulic control
Liquefaction input port 1., pressure oil input port 2., 3 throttling oil discharge outlet (first throttle oil discharge outlet 3., second throttling oil discharge outlet 4.,
5. third throttles oil discharge outlet), control oily input port 6., throttle valve is 7..According to figure, below to the connection relation explanation of all parts
It is as follows.
The input terminal of the main control valve 1 by pipeline respectively with electrichydraulic control oil input port 1., pressure oil input port 2.
7. connection, output end are connect with servomotor 5, non-return valve 8, throttle valve respectively by pipeline；The servomotor 5 is distinguished by pipeline
It is 7. connect with non-return valve 8, throttle valve.
6. the oily input port of the control is connected with the input terminal of operating mode selector valve 4, sequence closing valve group 6 respectively by pipeline
It connects, the output end of the operating mode selector valve 4 inserts valve group 2 with shuttle valve respectively by pipeline, inserted valve 3 is connect, step closure device
The output end of group 6 inserts valve group 2 with the shuttle valve by pipeline and connect.
In 3 throttling oil discharge outlets, 3. first throttle oil discharge outlet is matched by pipeline and shuttle valve inserting valve group 2, inserted valve 3, master
Pressure valve 1 connects, 4. the second throttling oil discharge outlet inserts valve group 2 with shuttle valve by pipeline and connect, 5. third throttling oil discharge outlet passes through pipe
Road is connect with inserted valve 3.Flow regulator pieces 9 are respectively arranged on three throttling oil discharge outlets, the big minor adjustment by adjusting flow regulator pieces 9 passes through this
The oil mass of throttling oil discharge outlet.
In above-mentioned apparatus, there are following two control oil circuits：
1,6. control oil is input to from the oily input port of control in operating mode selector valve 4, sequence closing valve group 6；
Operating mode selector valve 4 will control oil and be pipelined to inserted valve 3 and shuttle valve inserting valve group 2；
Sequence closing valve group 6 will control oil and be pipelined to shuttle valve inserting valve group 2.
2,1. electrichydraulic control oil is input to main control valve 1 from electrichydraulic control oil input port.
In above-mentioned apparatus, there are following working connections：
1, oil inlet：2. pressure oil is input to main control valve 1 from pressure oil input port, main control valve 1 is by pipeline by pressure
Oil is transported to servomotor 5.
2, oil extraction：Oil extraction in servomotor 5 by pipeline be respectively delivered to throttle valve 7. with non-return valve 8, then throttle valve
7. being pipelined to main control valve 1 with non-return valve 8, main control valve 1 is made by the conduction position of the internal each valve of adjusting
Oil extraction enter first throttle oil discharge outlet 3., second throttling oil discharge outlet 4., third throttling oil discharge outlet 5. in one or more,
Fuel tank is flowed into finally by above-mentioned drainage port.
In the present embodiment, in order to preferably realize closing curve, it is equipped with a cam on 6 top of sequence closing valve group, it is described
Servomotor 5 is equipped with an incline bench, and cam can be along inclined-plane up/down steps.
In the present embodiment, the operating mode selector valve 4 uses bistable electromagnetic valve.The sequence closing valve group 6 uses spring
Reset type hydraulic valve.
The control method of the present embodiment, including step：
One, change working function
According to the operating mode order of unit optimum selection, when unit carries out state change, operating mode selector valve 4 acts, and carries out operating mode choosing
It selects and control program validation is fed back to by position contact.
1, it is to be operated in hydraulic turbine direction operating mode that operating mode selector valve 4, which selects current pump turbine,
Pressure oil acts on 3 epicoele of inserted valve by operating mode selector valve 4, and makes its closing.Shuttle valve inserts valve group and opens, and connects
5 oil return of power device inserts the second throttling oil discharge outlet that valve group 2 controls by the T mouths of main control valve 1 through first throttle oil discharge outlet, shuttle valve
4. flowing back to fuel tank.Adjustment first throttle oil discharge outlet is 3., 4. upper flow regulator pieces 9 are open the second throttling oil discharge outlet, meets Turbines
Closing Law under operating mode.
2, it is to be operated in water pump direction operating mode that operating mode selector valve 4, which selects current pump turbine,
Pressure oil acts on shuttle valve by operating mode selector valve 4 and inserts 2 epicoele of valve group, and makes its closing；Inserted valve 3 is opened,
3. third throttling oil extraction that the oil return of servomotor 5 is controlled by the T mouths of main control valve 1 through first throttle oil discharge outlet with inserted valve 3
5. mouth flows back to fuel tank.Adjustment first throttle oil discharge outlet is 3., 5. upper flow regulator pieces are open third throttling oil discharge outlet, meets unit plugman
Closing Law under condition.
Two, sequence closing function
1, operating mode selector valve 4 is in G (power generation) direction position, according to the pump turbine Load Rejection of Hydraulic Turbine work precalculated
Guide vane under condition closes curve, and referring to Fig. 2, it includes quick closing valve section, slow pass section and breeze way, this three sections control which, which closes curve,
Method processed is as follows：
Quick closing valve section：Pressure oil connects inserted valve 3, and 5., 5 oil drain quantity of servomotor inserts cut-out third throttling oil discharge outlet for shuttle valve
The second throttling oil discharge outlet 4. flow summation with first throttle oil discharge outlet 3. that valve group 2 controls, is realized under the operating mode of hydraulic turbine direction
The quick closing valve section Closing Law of guide vane；
It is slow to close section：When servomotor 5 is closed to 76% aperture, sequence closing valve group 6 carries out oil circuit switching, and pressure oil passes through
Sequence closing valve group 6 acts on shuttle valve inserting 2 epicoele of valve group, and 4., 5 oil drain quantity of servomotor is first to the second throttling of cut-out oil discharge outlet
Throttle the flow of oil discharge outlet 3., realizes the slow pass section Closing Law of guide vane under hydraulic turbine condition；
Breeze way：The present embodiment servomotor is equipped with 3 oil pipes, and wherein two are oil exit pipe when closing, and one is oil inlet
Pipe.The position that two oil exit pipes on servomotor are designed by early period, will block up when servomotor internal piston moves to certain position
An oil exit pipe is filled in, realizes that buffering is closed to reduce oil drain quantity.
2, operating mode selector valve 4 is in P (water pump) direction position
Curve is closed according to the guide vane under the pump turbine pump operating condition precalculated, referring to Fig. 3.
It includes quick closing valve section and slow pass section that the guide vane, which closes curve, this two sections control method is as follows：
Quick closing valve section：Pressure oil connects shuttle valve and inserts valve group 2, and the second throttling of cut-out oil discharge outlet 4., close in chamber by servomotor 5
Third that oil extraction is controlled by inserted valve 3 throttling oil discharge outlet 5. with first throttle oil discharge outlet 3., and oil drain quantity is equal to the two rows
The flow summation of hydraulic fluid port；When servomotor 5 is closed to 76% aperture, the switching of 6 oil circuit of sequence closing valve group, the segmented pass of pressure oil
Shuttle valve inserting valve group 2 is switched to after valve closing group 6, oil extraction speed is constant, is arranged with first throttle by adjusting third throttling oil discharge outlet
The bore of flow regulator pieces on hydraulic fluid port realizes the quick closing valve section Closing Law of guide vane under the operating mode of water pump direction；
It is slow to close section：3. the cross-sectional flow area of throttle valve 7. is more than first throttle oil discharge outlet but throttles oil discharge outlet 5. less than third
With first throttle oil discharge outlet 3. summation, 7. realize that the slow pass section of guide vane under the operating mode of water pump direction closes rule by adjusting throttle valve
Rule.
The present invention disclosure satisfy that different sequence closing rules under pump turbine group difference operating mode, avoid under various working
To meet the needs of most bad working environments, and the unanimous circumstances of the Closing Law of other operating modes adjustment, the fortune of unit is expanded
Row section and range improve the protection to unit itself under the premise of meeting regulation assurance calculation, have very positive
Meaning.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by changes, modifications, substitutions, combinations, simplifications,
Equivalent substitute mode is should be, is included within the scope of the present invention.
Claims (9)
1. working condition control device in a kind of pump turbine governing system, which is characterized in that including main control valve, shuttle valve inserted valve
Group, inserted valve, operating mode selector valve, servomotor, sequence closing valve group, regulating ring of wicket gate, non-return valve, electrichydraulic control oil input port,
Pressure oil input port, three throttling oil discharge outlets, the oily input port of control, throttle valve, the input terminal of the main control valve pass through pipeline
Connect respectively with electrichydraulic control oil input port, pressure oil input port, output end by pipeline respectively with servomotor, non-return valve, section
Flow valve connection；The servomotor is connect with non-return valve, throttle valve respectively by pipeline；
The oily input port of the control is connect with the input terminal of operating mode selector valve, sequence closing valve group respectively by pipeline, the work
The output end of condition selector valve inserts valve group with shuttle valve respectively by pipeline, inserted valve is connect, and the output end of sequence closing valve group is logical
Piping is connect with shuttle valve inserting valve group；
In three throttling oil discharge outlets, first throttle oil discharge outlet inserts valve group, inserted valve, main control valve by pipeline and shuttle valve and connects
It connects, the second throttling oil discharge outlet inserts valve group with shuttle valve by pipeline and connect, and third throttling oil discharge outlet passes through pipeline and inserted valve connects
It connects；
The shuttle valve inserting valve group is composed of shuttle valve and inserted valve, when shuttle valve inserts any oil of cut-in pressure all the way in valve group
Afterwards, no matter another way whether cut-in pressure oil will not all change shuttle valve inserting valve group working condition.
2. working condition control device in pump turbine governing system according to claim 1, which is characterized in that the segmentation
It closes valve group top and is equipped with a cam, the servomotor is equipped with an incline bench, and when servomotor acts, cam can be along inclined-plane
Up/down steps.
3. working condition control device in pump turbine governing system according to claim 1, which is characterized in that the operating mode
Selector valve uses bistable electromagnetic valve.
4. working condition control device in pump turbine governing system according to claim 1, which is characterized in that the segmentation
It closes valve group and uses spring return type hydraulic valve.
5. working condition control device in pump turbine governing system according to claim 1, which is characterized in that the relay
Device is equipped with 3 oil pipes, and when guide vane is closed, two are oil exit pipe, and one is oil inlet pipe.
6. the controlling party of working condition control device in a kind of 1-5 any one of them pump turbine governing systems based on claim
Method, which is characterized in that according to machine group command before the booting of pump turbine unit, the operation of unit is selected by operating mode selector valve
Operating mode, in unit failure removal of load by control piper in respective valves switching, realize same unit difference operating mode direction
Under according to different guide vanes close curve closed.
7. control method according to claim 6, which is characterized in that including step：
(1) current pump turbine is selected to be operated in water pump direction operating mode or hydraulic turbine direction work by operating mode selector valve
Condition；If selecting water pump direction operating mode, step (2) is executed, otherwise, executes step (3)；
(2) operating mode selector valve right chamber is connected, and pressure oil acts on shuttle valve by operating mode selector valve and inserts valve group epicoele, and makes its pass
It closes；Inserted valve is opened, and the oil return of servomotor passes through third of the T mouths of main control valve through first throttle oil discharge outlet and inserted valve control
Throttling oil discharge outlet flows back to fuel tank；After servomotor is closed to certain position, sequence closing valve group action, pressure oil is connected shuttle valve and is inserted
Variation is not generated after dress valve group, and oil extraction speed is constant；
(3) operating mode selector valve left chamber is connected, and pressure oil acts on inserted valve epicoele by operating mode selector valve, and makes its closing；Shuttle
Valve inserts valve group and opens, and servomotor oil return inserts valve group control by the T mouths of main control valve through first throttle oil discharge outlet, shuttle valve
Second throttling oil discharge outlet flows back to fuel tank；After servomotor is closed to certain position, the action of sequence closing valve group compresses shuttle valve inserting
Valve group, servomotor oil return flow back to fuel tank by first throttle oil discharge outlet, close and realize first quick and back slow.
8. control method according to claim 7, which is characterized in that in the step (2), wanted according to regulation assurance calculation
It asks the guide vane under the operating mode of pre-rendered pump turbine water pump direction to close curve, is arranged after inserted valve according to curve adjustment
The caliber size of third the throttling oil discharge outlet and flow regulator pieces on first throttle oil discharge outlet in face；
It includes quick closing valve section and slow pass section, this two sections control that guide vane under the operating mode of pump turbine water pump direction, which closes curve,
Method is as follows：
(2-1) quick closing valve section：Pressure oil connects shuttle valve and inserts valve group, cut-out the second throttling oil discharge outlet, and servomotor closes the row in chamber
The third that oil is controlled by inserted valve throttles oil discharge outlet and first throttle oil discharge outlet, and oil drain quantity is equal to the stream of the two oil discharge outlets
Amount superposition；When servomotor is closed to specified aperture, sequence closing valve group carries out oil circuit switching, the segmented closing valve group of pressure oil
After be switched to shuttle valve inserting valve group, oil extraction speed do not change；By adjusting third throttling oil discharge outlet and first throttle oil extraction
Flow regulator pieces caliber size on mouth realizes the quick closing valve section Closing Law of guide vane under the operating mode of water pump direction；
(2-2) closes section slowly：The cross-sectional flow area of throttle valve is more than first throttle oil discharge outlet but less than third throttling oil discharge outlet and the
One throttling oil discharge outlet summation, the slow pass section Closing Law of guide vane under the operating mode of water pump direction is realized by adjusting throttle valve.
9. control method according to claim 7, which is characterized in that in the step (3), wanted according to regulation assurance calculation
It asks the guide vane under the operating mode of pre-rendered pump turbine hydraulic turbine direction to close curve, is arranged in inserted valve according to curve adjustment
The caliber size of subsequent second throttling oil discharge outlet and flow regulator pieces on first throttle oil discharge outlet；
Guide vane under the operating mode of pump turbine hydraulic turbine direction closes curve and includes quick closing valve section, closes section and breeze way slowly, this
Three sections of control method is as follows：
(3-1) quick closing valve section：Pressure oil connects inserted valve, and cut-out third throttling oil discharge outlet, servomotor oil drain quantity is shuttle valve inserted valve
The flow summation of second throttling oil discharge outlet and first throttle oil discharge outlet of group control, guide vane is fast under the operating mode of realization hydraulic turbine direction
Close section Closing Law；
(3-2) closes section slowly：When servomotor is closed to specified aperture, sequence closing valve group carries out oil circuit switching, and pressure oil passes through
Sequence closing valve group acts on shuttle valve inserting valve group epicoele, and cut-out the second throttling oil discharge outlet, servomotor oil drain quantity is first throttle
The flow of oil discharge outlet realizes the slow pass section Closing Law of guide vane under hydraulic turbine condition；
(3-3) breeze way：The position for setting two oil exit pipes on servomotor, when servomotor internal piston moves to certain position just
An oil exit pipe can be blocked, and then reduces the Closing Law that oil drain quantity realizes breeze way.
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| CN201610790004.3A CN106438187B (en) | 2016-08-31 | 2016-08-31 | Working condition control device and its control method in a kind of pump turbine governing system |
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|---|---|---|---|---|
| CN108223241B (en) * | 2018-01-12 | 2020-11-10 | 国家电网公司 | Guide vane feedback fault judgment logic method |
| CN109271684B (en) * | 2018-08-29 | 2022-04-05 | 哈尔滨工业大学 | Dynamic characteristic analysis method for water pump turbine in load shedding process |
| CN109139351B (en) * | 2018-09-05 | 2023-09-29 | 中国长江电力股份有限公司 | Self-adaptive control device and method for segmented closing of speed regulator servomotor |
| CN109236554B (en) * | 2018-09-17 | 2024-06-25 | 国家电网有限公司 | Guide vane closing system during pump storage unit fault and control method thereof |
| CN109236553B (en) * | 2018-09-29 | 2020-07-03 | 东方电气自动控制工程有限公司 | Overspeed protection and flow control method for pumped storage power station |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042159A (en) * | 2010-11-30 | 2011-05-04 | 国网电力科学研究院 | Stepped closing device capable of adjusting closing rate of pumped storage group |
| CN204041340U (en) * | 2014-07-15 | 2014-12-24 | 哈尔滨电机厂有限责任公司 | Large-scale pumped storage power unit Double-working-condition subsection and closed device |
| CN104775983A (en) * | 2014-01-14 | 2015-07-15 | 东方电气集团东方电机有限公司 | Guide blade delay closing system of water pumping energy storage unit |
| CN206071793U (en) * | 2016-08-31 | 2017-04-05 | 清远蓄能发电有限公司 | Working condition control device in a kind of pump turbine governing system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007303387A (en) * | 2006-05-11 | 2007-11-22 | Toshiba Corp | Speed governor for hydraulic machine |
-
2016
- 2016-08-31 CN CN201610790004.3A patent/CN106438187B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042159A (en) * | 2010-11-30 | 2011-05-04 | 国网电力科学研究院 | Stepped closing device capable of adjusting closing rate of pumped storage group |
| CN104775983A (en) * | 2014-01-14 | 2015-07-15 | 东方电气集团东方电机有限公司 | Guide blade delay closing system of water pumping energy storage unit |
| CN204041340U (en) * | 2014-07-15 | 2014-12-24 | 哈尔滨电机厂有限责任公司 | Large-scale pumped storage power unit Double-working-condition subsection and closed device |
| CN206071793U (en) * | 2016-08-31 | 2017-04-05 | 清远蓄能发电有限公司 | Working condition control device in a kind of pump turbine governing system |
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Effective date of registration: 20221008 Address after: 511800 Qingyuan Pumped Storage Power Station office building, Longwan village committee, Taiping Town, Qingxin District, Qingyuan City, Guangdong Province Patentee after: QINGYUAN ENERGY STORAGE AND POWER GENERATION Co.,Ltd. Patentee after: China Southern power grid peak shaving and frequency modulation (Guangdong) energy storage technology Co.,Ltd. Address before: 511800 Longwan industrial zone, Taiping Town, Qingxin District, Qingyuan City, Guangdong Province Patentee before: QINGYUAN ENERGY STORAGE AND POWER GENERATION Co.,Ltd. |