CN104775983A - Guide blade delay closing system of water pumping energy storage unit - Google Patents
Guide blade delay closing system of water pumping energy storage unit Download PDFInfo
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- CN104775983A CN104775983A CN201410015013.6A CN201410015013A CN104775983A CN 104775983 A CN104775983 A CN 104775983A CN 201410015013 A CN201410015013 A CN 201410015013A CN 104775983 A CN104775983 A CN 104775983A
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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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- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Control Of Water Turbines (AREA)
Abstract
The invention relates to the technical field of speed regulating systems of water turbine generator sets, and in particular to a guide blade delay closing system of a water pumping energy storage unit. The guide blade delay closing system comprises a plug-in valve, a first electromagnetic reversing valve and a liquid-controlled reversing valve. An opening A of the plug-in valve is connected with a distributing valve of a speed controller, and an opening B of the plug-in valve is connected with a servomotor; an opening A of the first electromagnetic reversing valve is connected with an opening X2 of the liquid-controlled reversing valve, and an opening P of the first electromagnetic reversing valve is connected with a hydraulic oil source and an opening X1 and an opening B of the liquid-controlled reversing valve; an opening P of the liquid-controlled reversing valve is connected with an opening X of the plug-in valve; the control area of the opening X2 of the liquid-controlled reversing valve is larger than that of the opening X1 of the liquid-controlled reversing valve, and an opening T of the first electromagnetic reversing valve and an opening A of the liquid-controlled reversing valve are connected with an oil returning tank; and a first electromagnet of the first electromagnetic reversing valve and the speed controller are electrically connected with a monitoring system. The characteristic of closing of guide blades of the water pumping energy storage unit can be achieved.
Description
Technical field
The present invention relates to hydraulic generator speed control system technical field, be specifically related to pump-storage generator stator time-delay closing system.
Background technique
At present, the speed control system of conventional hydraulic generator comprises the automation equipment such as speed regulator electric device, hydraulic pressure installation, oil gear, speed measurement device and emergency distributing valve, two sections of cut-off valves.Wherein, speed regulator electric device, hydraulic pressure installation, oil gear, speed measurement device are that all speed control systems all must be joined, and emergency distributing valve is configured according to actual requirement, and two sections of shutoff devices then determine whether configuration according to the regulation assurance calculation result of water turbine.Two sections of shutoff device effects are in the unit: with the prestissimo required, stator is closed to setting aperture during load rejection, control generating unit speed and be no more than permitted value, again with regulation speed slowly closing stator to complete shut-down, ensure that aqueduct pressure is no more than specified value, ensure the safety in unit and whole power station.
Along with development that is economic and science and technology, in order to unnecessary electric energy when network load is low, change the high value electric energy of electrical network peak time into, pumped storage power station becomes the main study subject addressed this problem.
In the speed control system of pump-storage generator, the rotary wheel of water turbine in the characteristic of pump turbine runner and conventional water turbine set is very different, and its closing property is also different from conventional water turbine set.When load rejection, the closedown of conventional water turbine set requires it is first close fast to close slowly to complete shut-down to corner position again, and the closedown mode of pump-storage generator just in contrast, when removal of load, pump-storage generator needed first to be not related to or after the slowly closing some time, then closed to complete shut-down with the prestissimo allowed.Otherwise may occur that aqueduct is in charge of place's force value and is exceeded permitted value and have an accident.Two sections of shutoff devices of tradition water turbine set cannot realize this closing property requirement of pump-storage generator, and due to the characteristic of the aspects such as pump-storage generator itself and pumped storage power station unit layout, to the reliability requirement of pump-storage generator Closing Law more higher than conventional water turbine set.In addition, in pump-storage generator, during removal of load, the speed of unit rises is limited, permitted value can not be exceeded, but the negative pressure that aqueduct hydraulic pressure rises and draft tube produces but has the possibility exceeding specified value, as these two force value exceed standard, likely to power station bringing on a disaster property consequence.Therefore, during pump-storage generator removal of load, time delay device must reliably drop into, and does not allow failure.
What the existing pump-storage generator stator time-delay closing device put into operation adopted is mechanical-hydraulic control mode, and system is very complicated, and components and parts are many, and rely on throttle orifice adjustment making time point, adjustment range is little and difficult.The trigger dropped into is pure mechanic over speed protection device; rotating speed rising value when its action must get rid of 100% load with unit under rated head is adjusted; when unit is not under full load situation during removal of load; its maximum (top) speed rises and does not reach mechanic over speed protection device setting valve; time-delay closing device then cannot drop into; and; overspeed protection device interval is for some time triggered to turn up to setting valve of overrunning from removal of load; during this period of time stator is closed by top speed, and these all exist hydraulic pressure and exceed specified value danger.
So, need a kind of pump-storage generator stator time-delay closing system that can reliably drop at present badly.
Summary of the invention
The object of the invention is to: promptly and accurately can not drop into for existing pump-storage generator stator time-delay closing system and make pump-storage generator there is the deficiency of potential safety hazard, the pump-storage generator stator time-delay closing system that can promptly and accurately and reliably drop into is provided.
To achieve these goals, the technical solution used in the present invention is:
Pump-storage generator stator time-delay closing hydraulic system, comprise cartridge valve, first solenoid directional control valve and pilot operated directional control valve, the A mouth of described cartridge valve is connected with the voltage distribution valve of speed regulator, the B mouth of described cartridge valve is connected with servomotor, the A mouth of described first solenoid directional control valve is connected with the X2 mouth of described pilot operated directional control valve, the P mouth of described first solenoid directional control valve connects X1 mouth and the B mouth of hydraulic oil source and described pilot operated directional control valve, the P mouth of described pilot operated directional control valve is connected with the X mouth of described cartridge valve, the control area of the X2 mouth of described pilot operated directional control valve is greater than the control area of X1 mouth, the T mouth of described first solenoid directional control valve is connected oil sump tank with the A mouth of described pilot operated directional control valve, first electromagnet and the described speed regulator of described first solenoid directional control valve are electrically connected with supervisory system, when described supervisory system sends and drops into signal, the A mouth of described cartridge valve and B mouth disconnect, when described supervisory system sends and exits signal, the A mouth of described cartridge valve and B mouth are connected.When pump-storage generator runs well, first electromagnet is not excitatory, hydraulic oil source enters into the X2 mouth of pilot operated directional control valve after the first solenoid directional control valve, the X1 mouth of pilot operated directional control valve is connected with hydraulic oil source, control area due to the X2 mouth of pilot operated directional control valve is greater than the control area of X1 mouth, the P mouth of pilot operated directional control valve and A mouth are connected, the X mouth of cartridge valve, the P mouth of pilot operated directional control valve and A mouth and oil sump tank are connected, the A mouth of cartridge valve and B mouth are connected, and then make when pump-storage generator normally works, connect between the voltage distribution valve of speed regulator and servomotor, make speed regulator can control the action of stator by controlling servomotor, when pump-storage generator removal of load, supervisory system sends removal of load signal to speed regulator and the first solenoid directional control valve simultaneously, speed regulator sends the signal of stator cut out to servomotor by voltage distribution valve, but now, first solenoid directional control valve also receives the signal of removal of load, first electromagnet of the first solenoid directional control valve is excitatory, the A mouth of the first solenoid directional control valve and T mouth are connected and are connected with the X2 mouth of pilot operated directional control valve, hydraulic oil in the control chamber of the X2 mouth of pilot operated directional control valve is to oil sump tank oil return, the spool of pilot operated directional control valve moves, the B mouth of pilot operated directional control valve and P mouth are connected, the hydraulic oil of hydraulic oil source enters in the control chamber of X mouth of cartridge valve by the B mouth of pilot operated directional control valve and P mouth, the A mouth of cartridge valve and B mouth disconnect, so, now speed regulator can not control stator and cuts out immediately, when supervisory system sends exit instruction to the first solenoid directional control valve, the first electromagnet of the first solenoid directional control valve is not excitatory, and the A mouth and the B mouth that control cartridge valve are connected, and then make the stator quick closedown of pump-storage generator, at work, cartridge valve is adopted to make main valve, because cartridge valve structure is simple, through-current capability is large, the pressure loss is little, not easily hair fastener, pump-storage generator stator time-delay closing system of the present invention can be dropped in time, the first solenoid directional control valve is adopted to make control valve, amplify to operate cartridge valve action to the first solenoid directional control valve output signal with pilot operated directional control valve, make pump-storage generator stator time-delay closing system of the present invention to drop into reliably in time and to exit.
As preferred version of the present invention, be provided with throttle valve between the A mouth of described cartridge valve and B mouth, one end of described throttle valve is connected with the A mouth of described cartridge valve, and the other end of described throttle valve is connected with the B mouth of described cartridge valve.When pump-storage generator stator time-delay closing system of the present invention drops into, A mouth and the B mouth of cartridge valve are disconnected, now, owing to arranging throttle valve between the A mouth and B mouth of cartridge valve, make, still be switched between the voltage distribution valve of speed regulator and servomotor, only, due to the existence of throttle valve, between the voltage distribution valve of speed regulator and servomotor, the flow of oil circuit reduces, stator is closed slowly, thus makes stator time-delay closing system of the present invention can realize the closing property of pump-storage generator stator; In addition, owing to arranging throttle valve between the A mouth and B mouth of cartridge valve, when stator time-delay closing system can not exit owing to breaking down, and make stator cannot quick closedown time, stator still can be closed completely slowly under the effect of the voltage distribution valve of speed regulator, throttle valve and servomotor, ensure that safety reliability of the present invention.
As preferred version of the present invention, oil circuit between described first solenoid directional control valve and described hydraulic oil source is also in series with the second solenoid directional control valve, the P mouth of described second solenoid directional control valve is connected with described hydraulic oil source, the A mouth of described second solenoid directional control valve is connected with the P mouth of described first solenoid directional control valve, the T mouth of described second solenoid directional control valve is connected with described oil sump tank, and the second electromagnet of described second solenoid directional control valve is electrically connected with described supervisory system.The first electromagnetism solenoid directional control valve with connect as the second solenoid directional control valve between hydraulic oil source, because the first solenoid directional control valve and the second solenoid directional control valve are all normal open valves, so, when one of them solenoid directional control valve break down can not drop in time time, as long as another solenoid directional control valve can drop in time, stator time-delay closing system of the present invention still can drop into timely, thus ensure that stator time-delay closing system of the present invention can drop into reliably.
As preferred version of the present invention, oil circuit between the P mouth of described second solenoid directional control valve and described hydraulic oil source is provided with stop valve, one end of described stop valve is connected with described hydraulic oil source, and the other end of described stop valve is connected with the P mouth of described second solenoid directional control valve.By arranging stop valve at hydraulic oil source place, facilitate the installation of pump-storage generator stator time-delay closing system of the present invention, inspection and maintenance.
As preferred version of the present invention, the X mouth of described cartridge valve is also connected with pressure relay.In the control chamber of the X mouth of cartridge valve during feed pressure oil, pressure relay is entered by X mouth, spring in compression pressure relay makes position switch a, c connects, and send corresponding signal to supervisory system, represent the input of pump-storage generator stator time-delay closing system of the present invention, when the control chamber internal pressure oil of the X mouth of cartridge valve flows out, pressure oil in pressure relay also flows out, switch a in pressure relay, b connects, represent exiting of pump-storage generator stator time-delay closing system of the present invention, facilitate the input of pump-storage generator stator time-delay closing system of the present invention and the monitoring exited.
As preferred version of the present invention, between the X1 mouth of described stop valve and described pilot operated directional control valve, be also provided with pressure measuring tie-in.Oil circuit between stop valve and the X1 mouth of pilot operated directional control valve arranges pressure measuring tie-in, can detected pressures oil supply pressure easily by pressure measuring tie-in.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, cartridge valve is adopted to make main valve, control valve made by first solenoid directional control valve, amplify to operate cartridge valve action to the first solenoid directional control valve output signal with pilot operated directional control valve, make can dropping into reliably in time and exit of pump-storage generator stator time-delay closing system of the present invention;
2, throttle valve is set between the A mouth and B mouth of cartridge valve, when stator time-delay closing system can not exit owing to breaking down, and make stator cannot quick closedown time, stator still can be closed completely slowly under the effect of the voltage distribution valve of speed regulator, throttle valve and servomotor, ensure that safety reliability of the present invention;
3, throttle valve is set between the A mouth and B mouth of cartridge valve, when stator time-delay closing system of the present invention drops into, stator is closed slowly, when stator time-delay closing system of the present invention exits, the quick and complete closedown of stator, achieves the closing property of pump-storage generator stator;
4, the solenoid directional control valve of two series connection is set, when one of them solenoid directional control valve break down can not drop in time time, as long as another solenoid directional control valve can drop in time, stator time-delay closing system of the present invention still can drop into timely, ensure that stator time-delay closing system of the present invention can drop into reliably.
Accompanying drawing explanation
Fig. 1 is hydraulic scheme of the present invention,
Mark in figure: 1-cartridge valve, 2-first solenoid directional control valve, 3-pilot operated directional control valve, 4-oil sump tank, 5-first electromagnet, 6-throttle valve, 7-second solenoid directional control valve, 8-second electromagnet, 9-stop valve, 10-pressure relay, 11-pressure measuring tie-in.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Pump-storage generator stator time-delay closing hydraulic system as shown in Figure 1, comprise cartridge valve 1, first solenoid directional control valve 2 and pilot operated directional control valve 3, the A mouth of described cartridge valve 1 is connected with the voltage distribution valve of speed regulator, the B mouth of described cartridge valve 1 is connected with servomotor, the A mouth of described first solenoid directional control valve 2 is connected with the X2 mouth of described pilot operated directional control valve 3, the P mouth of described first solenoid directional control valve 2 connects X1 mouth and the B mouth of hydraulic oil source and described pilot operated directional control valve 3, the P mouth of described pilot operated directional control valve 3 is connected with the X mouth of described cartridge valve 1, the control area of the X2 mouth of described pilot operated directional control valve 3 is greater than the control area of X1 mouth, the T mouth of described first solenoid directional control valve 2 is connected oil sump tank 4 with the A mouth of described pilot operated directional control valve 3, first electromagnet 5 of described first solenoid directional control valve and described speed regulator are electrically connected with supervisory system, when described supervisory system sends and drops into signal, the A mouth of described cartridge valve 1 and B mouth disconnect, when described supervisory system sends and exits signal, the A mouth of described cartridge valve 1 and B mouth are connected.When pump-storage generator runs well, first electromagnet 5 is not excitatory, hydraulic oil source enters into the X2 mouth of pilot operated directional control valve 3 after the first solenoid directional control valve 2, the X1 mouth of pilot operated directional control valve 3 is connected with hydraulic oil source, control area due to the X2 mouth of pilot operated directional control valve 3 is greater than the control area of X1 mouth, the P mouth of pilot operated directional control valve 3 and A mouth are connected, the X mouth of cartridge valve 1, the P mouth of pilot operated directional control valve 3 and A mouth and oil sump tank 4 are connected, the A mouth of cartridge valve 1 and B mouth are connected, and then make when pump-storage generator normally works, connect between the voltage distribution valve of speed regulator and servomotor, make speed regulator can control the action of stator by controlling servomotor, when pump-storage generator removal of load, supervisory system sends removal of load signal to speed regulator and the first solenoid directional control valve 2 simultaneously, speed regulator sends the signal of stator cut out to servomotor by voltage distribution valve, but now, first solenoid directional control valve 2 also receives the signal of removal of load, first electromagnet 5 of the first solenoid directional control valve 2 is excitatory, the A mouth of the first solenoid directional control valve 2 and T mouth are connected and are connected with the X2 mouth of pilot operated directional control valve 3, hydraulic oil in the control chamber of the X2 mouth of pilot operated directional control valve 3 is to oil sump tank 4 oil return, the spool of pilot operated directional control valve 3 moves, the B mouth of pilot operated directional control valve 3 and P mouth are connected, the hydraulic oil of hydraulic oil source enters in the control chamber of X mouth of cartridge valve 1 by the B mouth of pilot operated directional control valve 3 and P mouth, the A mouth of cartridge valve 1 and B mouth disconnect, so, now speed regulator can not control stator and cuts out immediately, when supervisory system sends exit instruction to the first solenoid directional control valve 2, the first electromagnet 5 of the first solenoid directional control valve 2 is not excitatory, and the A mouth and the B mouth that control cartridge valve 1 are connected, and then make the stator quick closedown of pump-storage generator, at work, cartridge valve 1 is adopted to make main valve, because cartridge valve 1 structure is simple, through-current capability is large, the pressure loss is little, not easily hair fastener, pump-storage generator stator time-delay closing system of the present invention can be dropped in time, the first solenoid directional control valve 2 is adopted to make control valve, amplify to operate cartridge valve 1 action to the first solenoid directional control valve 2 output signal with pilot operated directional control valve 3, make can dropping into reliably in time and exit of pump-storage generator stator time-delay closing system of the present invention.
As preferred version of the present invention, be provided with throttle valve 6 between the A mouth of described cartridge valve 1 and B mouth, one end of described throttle valve 6 is connected with the A mouth of described cartridge valve 1, and the other end of described throttle valve 6 is connected with the B mouth of described cartridge valve 1.When pump-storage generator stator time-delay closing system of the present invention drops into, A mouth and the B mouth of cartridge valve 1 are disconnected, now, owing to arranging throttle valve 6 between the A mouth and B mouth of cartridge valve 1, make, still be switched between the voltage distribution valve of speed regulator and servomotor, only, due to the existence of throttle valve 6, between the voltage distribution valve of speed regulator and servomotor, the flow of oil circuit reduces, stator is closed slowly, thus makes stator time-delay closing system of the present invention can realize the closing property of pump-storage generator stator; In addition, owing to arranging throttle valve 6 between the A mouth and B mouth of cartridge valve 1, when stator time-delay closing system can not exit owing to breaking down, and make stator cannot quick closedown time, stator still can be closed completely slowly under the effect of the voltage distribution valve of speed regulator, throttle valve 6 and servomotor, ensure that safety reliability of the present invention.
As preferred version of the present invention, oil circuit between described first solenoid directional control valve 2 and described hydraulic oil source is also in series with the second solenoid directional control valve 7, the P mouth of described second solenoid directional control valve 7 is connected with described hydraulic oil source, the A mouth of described second solenoid directional control valve 7 is connected with the P mouth of described first solenoid directional control valve 2, the T mouth of described second solenoid directional control valve 7 is connected with described oil sump tank 4, and the second electromagnet 8 of described second solenoid directional control valve 7 is electrically connected with described supervisory system.The first electromagnetism solenoid directional control valve 2 with connect as the second solenoid directional control valve 7 between hydraulic oil source, because the first solenoid directional control valve 2 and the second solenoid directional control valve 7 are all normal open valves, so, when one of them solenoid directional control valve break down can not drop in time time, as long as another solenoid directional control valve can drop in time, stator time-delay closing system of the present invention still can drop into timely, thus ensure that stator time-delay closing system of the present invention can drop into reliably.
As preferred version of the present invention, oil circuit between the P mouth of described second solenoid directional control valve 7 and described hydraulic oil source is provided with stop valve 9, one end of described stop valve 9 is connected with described hydraulic oil source, and the other end of described stop valve 9 is connected with the P mouth of described second solenoid directional control valve 7.By arranging stop valve 9 at hydraulic oil source place, facilitate the installation of pump-storage generator stator time-delay closing system of the present invention, inspection and maintenance.
As preferred version of the present invention, the X mouth of described cartridge valve 1 is also connected with pressure relay 10, and described pressure relay 10 is electrically connected with described supervisory system.In the control chamber of the X mouth of cartridge valve 1 during feed pressure oil, pressure relay 10 is entered by X mouth, spring in compression pressure relay 10 makes position switch a, c connects, and send corresponding signal to supervisory system, represent the input of pump-storage generator stator time-delay closing system of the present invention, when the control chamber internal pressure oil of the X mouth of cartridge valve 1 flows out, pressure oil in pressure relay 10 also flows out, switch a in pressure relay 10, b connects, represent exiting of pump-storage generator stator time-delay closing system of the present invention, facilitate the input of pump-storage generator stator time-delay closing system of the present invention and the monitoring exited.
As preferred version of the present invention, between described stop valve 9 and the X1 mouth of described pilot operated directional control valve 3, be also provided with pressure measuring tie-in 11.Oil circuit between stop valve 9 and the X1 mouth of pilot operated directional control valve 3 is arranged pressure measuring tie-in 11, by pressure measuring tie-in 11, can monitor easily and enter pressure oil-source pressure of the present invention, further improve safety reliability of the present invention.
All any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. pump-storage generator stator time-delay closing hydraulic system, comprise cartridge valve, first solenoid directional control valve and pilot operated directional control valve, the A mouth of described cartridge valve is connected with the voltage distribution valve of speed regulator, the B mouth of described cartridge valve is connected with servomotor, the A mouth of described first solenoid directional control valve is connected with the X2 mouth of described pilot operated directional control valve, the P mouth of described first solenoid directional control valve connects X1 mouth and the B mouth of hydraulic oil source and described pilot operated directional control valve, the P mouth of described pilot operated directional control valve is connected with the X mouth of described cartridge valve, the control area of the X2 mouth of described pilot operated directional control valve is greater than the control area of X1 mouth, the T mouth of described first solenoid directional control valve is connected oil sump tank with the A mouth of described pilot operated directional control valve, first electromagnet and the described speed regulator of described first solenoid directional control valve are electrically connected with supervisory system, when described supervisory system sends and drops into signal, the A mouth of described cartridge valve and B mouth disconnect, when described supervisory system sends and exits signal, the A mouth of described cartridge valve and B mouth are connected.
2. pump-storage generator stator time-delay closing hydraulic system according to claim 1, it is characterized in that, throttle valve is provided with between the A mouth of described cartridge valve and B mouth, one end of described throttle valve is connected with the A mouth of described cartridge valve, and the other end of described throttle valve is connected with the B mouth of described cartridge valve.
3. pump-storage generator stator time-delay closing hydraulic system according to claim 1 and 2, it is characterized in that, oil circuit between described first solenoid directional control valve and described hydraulic oil source is also in series with the second solenoid directional control valve, the P mouth of described second solenoid directional control valve is connected with described hydraulic oil source, the A mouth of described second solenoid directional control valve is connected with the P mouth of described first solenoid directional control valve, the T mouth of described second solenoid directional control valve is connected with described oil sump tank, and the second electromagnet of described second solenoid directional control valve is electrically connected with described supervisory system.
4. pump-storage generator stator time-delay closing hydraulic system according to claim 3, it is characterized in that, oil circuit between the P mouth of described second solenoid directional control valve and described hydraulic oil source is provided with stop valve, one end of described stop valve is connected with described hydraulic oil source, and the other end of described stop valve is connected with the P mouth of described second solenoid directional control valve.
5. pump-storage generator stator time-delay closing hydraulic system according to claim 4, it is characterized in that, the X mouth of described cartridge valve is also connected with pressure relay.
6. pump-storage generator stator time-delay closing hydraulic system according to claim 1, is characterized in that, be also provided with pressure measuring tie-in between the X1 mouth of described stop valve and described pilot operated directional control valve.
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| CN201410015013.6A CN104775983B (en) | 2014-01-14 | 2014-01-14 | Pump-storage generator stator time-delay closing system |
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| CN201410015013.6A CN104775983B (en) | 2014-01-14 | 2014-01-14 | Pump-storage generator stator time-delay closing system |
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| CN104775983B CN104775983B (en) | 2017-04-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438187A (en) * | 2016-08-31 | 2017-02-22 | 清远蓄能发电有限公司 | Working condition control device in pump turbine speed adjusting system and control method of working condition control device |
| CN109139350A (en) * | 2018-09-29 | 2019-01-04 | 东方电机控制设备有限公司 | A kind of overspeed protection and volume control device for hydroenergy storage station |
| CN110059345A (en) * | 2019-03-08 | 2019-07-26 | 华中科技大学 | A kind of pump-storage generator successive load rejection ring-closing metathesis optimization method and system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61170300A (en) * | 1985-01-24 | 1986-07-31 | Kansai Electric Power Co Inc:The | Controller of variable speed water wheel generator |
| DE19720700A1 (en) * | 1997-05-16 | 1998-11-19 | Arno Hoeffken | Electrical energy storage method using potential energy |
| 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 |
| CN203348203U (en) * | 2013-07-02 | 2013-12-18 | 山东泰丰液压股份有限公司 | Speed-regulating hydraulic control valve group of large-flow two-way cartridge valve |
| CN103470441A (en) * | 2013-09-22 | 2013-12-25 | 东方电机控制设备有限公司 | Hydraulic device of water turbine speed governing and protection system |
| CN203670089U (en) * | 2014-01-14 | 2014-06-25 | 东方电气集团东方电机有限公司 | Water-pumping energy-storing unit guide vane delaying closing system |
-
2014
- 2014-01-14 CN CN201410015013.6A patent/CN104775983B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61170300A (en) * | 1985-01-24 | 1986-07-31 | Kansai Electric Power Co Inc:The | Controller of variable speed water wheel generator |
| DE19720700A1 (en) * | 1997-05-16 | 1998-11-19 | Arno Hoeffken | Electrical energy storage method using potential energy |
| 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 |
| CN203348203U (en) * | 2013-07-02 | 2013-12-18 | 山东泰丰液压股份有限公司 | Speed-regulating hydraulic control valve group of large-flow two-way cartridge valve |
| CN103470441A (en) * | 2013-09-22 | 2013-12-25 | 东方电机控制设备有限公司 | Hydraulic device of water turbine speed governing and protection system |
| CN203670089U (en) * | 2014-01-14 | 2014-06-25 | 东方电气集团东方电机有限公司 | Water-pumping energy-storing unit guide vane delaying closing system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438187A (en) * | 2016-08-31 | 2017-02-22 | 清远蓄能发电有限公司 | Working condition control device in pump turbine speed adjusting system and control method of working condition control device |
| CN106438187B (en) * | 2016-08-31 | 2018-08-28 | 清远蓄能发电有限公司 | Working condition control device and its control method in a kind of pump turbine governing system |
| CN109139350A (en) * | 2018-09-29 | 2019-01-04 | 东方电机控制设备有限公司 | A kind of overspeed protection and volume control device for hydroenergy storage station |
| CN109139350B (en) * | 2018-09-29 | 2024-01-26 | 东方电气自动控制工程有限公司 | Overspeed protection and flow control device for pumped storage power station |
| CN110059345A (en) * | 2019-03-08 | 2019-07-26 | 华中科技大学 | A kind of pump-storage generator successive load rejection ring-closing metathesis optimization method and system |
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| CN104775983B (en) | 2017-04-05 |
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