CN206876837U - The rotation direction detection means and system of a kind of pump-storage generator - Google Patents
The rotation direction detection means and system of a kind of pump-storage generator Download PDFInfo
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- CN206876837U CN206876837U CN201720841630.0U CN201720841630U CN206876837U CN 206876837 U CN206876837 U CN 206876837U CN 201720841630 U CN201720841630 U CN 201720841630U CN 206876837 U CN206876837 U CN 206876837U
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Abstract
The utility model provides a kind of the rotation direction detection means and system of pump-storage generator, the rotation direction detection means is applied to hydroenergy storage station, the rotation direction detection means includes analogue measurement part and the speed measuring fluted disc on the big axle of the pump-storage generator of hydroenergy storage station, speed measuring fluted disc is equidistantly to cut the circular zigzag formed, including tooth top and bottom of the tooth；The analogue measurement part includes：Multiple probes for pointing to the big axle axis direction, for output pulse signal；With the multiple analogue measurement unit popped one's head in and be connected.The utility model realizes the operating condition that unit can be accurately determined by the direction of rotation for detecting unit in real time, effectively controls the auxiliary equipment operation of unit.
Description
Technical field
The utility model is on technical field of power systems, especially with regard to the hydroenergy storage station technology in power system
Field, concretely it is the rotation direction detection means and system of a kind of pump-storage generator.
Background technology
Conventional power plant flows into factory building using the water in upper storehouse and promotes hydrogenerator rotation to send electric energy, its general direction of rotation
Determined by design, through that would not change after the completion of manufacture, installation and debugging, run always with one direction.Therefore conventional power plant is not deposited
Unit twocouese is run the problem of.
Pump-storage generator is drawn water to upper storage reservoir using electric energy during electric load low ebb, is put again in electric load peak period
Water to lower storage reservoir generates electricity, and in load valley, pump turbine uses as pump, water is extracted into upper storehouse, the water when load boom period
Pump turbine uses as the hydraulic turbine, by the kinetic energy power generation that the potential energy of the water in upper storehouse is runner.Therefore accumulation of energy unit can
Work in the two directions, for example, both can turn clockwise generating and also can rotate counterclockwise draw water.
Direction of rotation is an important parameter of pump-storage generator operation, determines the operating condition of unit, influences unit
Auxiliary equipment operation；Such as unit rotation direction can influence the reliability of operation of subsection and closed device, because subsection and closed device
That twocouese works, it can work in generating direction and direction of drawing water, and the speed of control stator closing be it is different,
If detecting unit rotation direction mistake so as to cause sequence closing to be acted in the direction of mistake, unit transient process can be caused out of control,
Cause the consequence that such as unit is overrun or penstock booster is very serious, so as to which very serious security incident can be triggered.
At present, the common method of the electric detection unit rotation direction of hydroenergy storage station is preset method, i.e., before unit rotation
The rotation direction of unit is first set, then drives five poles commutation knife action, five poles commutation knife PRD has three state (1,0, -1), Mei Gezhuan
The definition of state is typically as shown in table 1 below：
Table 1
From table 1, the rotation direction of unit is just on the basis of PRD state, and each subsystem is by detecting PRD state parameter
To confirm current unit rotation direction, and the respective equipment is controlled to run based on this.Detected using the method for detecting PRD positions
Unit rotation direction is false, is presetting system, as long as PRD is acted, no matter unit turns whether to rotate, illustrates current machine
The rotation direction of group；And even if unit illustrates unit in indefinite state also in rotation status after opening for PRD points.Such as work as unit
When being drawn water in water pump direction, if suddenly from grid disconnection, unit can shut down and close stator, but in stator closing process, by
In Action of Gravity Field, the water in upper storehouse down can flow in storehouse, reverse impact runner, unit is rotated toward generating direction, in the process machine
Group experience draw water direction rotate-static-generating direction rotates, corresponding PRD location status becomes from -1 turns to 0, so if only
Unit direction of rotation only is parsed from PRD states, then unit directly switchs to indefinite state from direction of drawing water, and does not reflect unit fully
Moving law, therefore this method is very unscientific.
Therefore, it is that this area is urgently to be resolved hurrily detection how to be carried out to the electric unit rotation direction of current hydroenergy storage station
Technical barrier.
Utility model content
In order to solve above-mentioned technical problem existing for prior art, the utility model provides a kind of pump-storage generator
Rotation direction detection means and system, speed measuring fluted disc, measurement are installed by the big axle of the pump-storage generator in hydroenergy storage station
The dynamic displacement of holes probe is simultaneously assigned to dither matrix variable set in advance, obtains dither matrix, so by with computing
Up time pin matrix tube, the inverse time pin matrix tube that device will store in dither matrix and matrix storage clockwise, matrix storage counterclockwise
The direction of rotation that unit is finally determined with computing is taken, it is accurate really by the direction of rotation for detecting unit in real time to realize
Determine the operating condition of unit, effectively control the auxiliary equipment operation of unit.
One of the purpose of this utility model is to provide a kind of rotation direction detection means of pump-storage generator, the storage that draws water
The rotation direction detection means of energy unit is applied to hydroenergy storage station, and the rotation direction detection means of the pump-storage generator includes simulation
Measuring part and the speed measuring fluted disc on the big axle of the pump-storage generator of hydroenergy storage station,
Wherein, the speed measuring fluted disc is equidistantly to cut the circular zigzag formed, including tooth top and bottom of the tooth；
The analogue measurement part includes probe and analogue measurement unit；
Multiple probes for pointing to the big axle axis direction, for exporting analog pulse signal；
The analogue measurement unit being connected with the multiple probe, including：
Analog-digital converter, for carrying out analog-to-digital conversion to the analog pulse signal, obtain digital pulse signal；
Digital storage, it is connected with the analog-digital converter, for storing the digital pulse signal；
Dither matrix memory, it is connected with the digital storage, it is pre- for the digital pulse signal to be assigned to
The dither matrix variable first stored, obtains dither matrix；
Matrix storage clockwise, for storing the up time pin matrix tube pre-set；
Matrix storage counterclockwise, for storing the inverse time pin matrix tube pre-set；
First and arithmetic unit, it is connected with the dither matrix memory, matrix storage clockwise, for by the arteries and veins
Rush matrix and the up time pin matrix tube is taken and computing, when the result that described first exports with arithmetic unit is 1, the rotation direction
Testing result is to turn clockwise；
Second and arithmetic unit, it is connected with the dither matrix memory, matrix storage counterclockwise, for by the arteries and veins
Rush matrix and the inverse time pin matrix tube is taken and computing, when it is 1 to take the result obtained with computing, the rotation direction testing result
For rotate counterclockwise.
In a kind of preferred embodiment of the present utility model, when the probe is relative with the tooth top, the pulse
Signal is high level signal；When the probe is relative with the bottom of the tooth, the pulse signal is low level signal.
The fluted disc described in a kind of preferred embodiment of the present utility model is 20 Equal rounds, including 10 bottom of the tooth and 10
Individual tooth top.
The not equipartition rate of fluted disc described in a kind of preferred embodiment of the present utility model<=0.05, the facewidth>20mm,
Transverse tooth thickness>20mm.
In a kind of preferred embodiment of the present utility model, the number of the probe is 3.
In a kind of preferred embodiment of the present utility model, 3 probes are arranged on the concentric circles with the big axle
18 ° in.
In a kind of preferred embodiment of the present utility model, 3 probes are arranged on tooth top side by side
In the range of.
In a kind of preferred embodiment of the present utility model, the probe is arranged on from the fluted disc 3mm to 5mm.
One of the purpose of this utility model has been to provide a kind of rotation direction detecting system of pump-storage generator, described to draw water
The rotation direction detecting system of accumulation of energy unit includes hydroenergy storage station and the rotation direction detection means of pump-storage generator.
The beneficial effects of the utility model are, there is provided a kind of rotation direction detection means of pump-storage generator and are
System, the rotation direction of unit is detected by the speed measuring fluted disc on big axle and multiple holes probes, analyzes unit in the quiescent state
The up time pin matrix tube and inverse time pin matrix tube of probe positions at different rotary direction, the probe positions of unit are detected in a dynamic state
Dither matrix, the element of dither matrix and up time pin matrix tube is taken respectively and computing, obtains 1 and determine unit direction of rotation to be suitable
Hour hands, take and computing respectively to the element of dither matrix and inverse time pin matrix tube, obtain 1 determine unit direction of rotation be it is counterclockwise,
Direction of rotation by detecting unit in real time can accurately determine the operating condition of unit, effectively control the auxiliary equipment fortune of unit
OK.
It is cited below particularly preferably real for above and other objects, features and advantages of the present utility model can be become apparent
Example is applied, and coordinates institute's accompanying drawings, is described in detail below.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of the rotation direction detecting system of pump-storage generator provided by the utility model；
Fig. 2 is a kind of structural representation of the rotation direction detection means of pump-storage generator provided by the utility model；
Fig. 3 is the view that probe measured value is 1 in specific embodiment provided by the utility model；
Fig. 4 is the view that probe measured value is 0 in specific embodiment provided by the utility model；
Fig. 5 is fluted disc probe scheme of installation in specific embodiment provided by the utility model；
Fig. 6 to Figure 11 is big axle rotate counterclockwise probe state change map in specific embodiment provided by the utility model；
Figure 12 to Figure 17 is that big axle turns clockwise probe state change map in specific embodiment provided by the utility model；
Figure 18 is analogue measurement unit in a kind of rotation direction detection means of pump-storage generator provided by the utility model
Structural representation.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Abbreviation and Key Term of the present utility model are introduced first.
Conventional hydropower station：Water can be converted to the integration engineering facility of electric energy.The high water level of reservoir flows into through diversion system
Factory building promotes turbine-generator units to send electric energy.
Hydroenergy storage station：Drawn water using electric energy during electric load low ebb to upper storage reservoir, in electric load peak period again
Discharge water the power station to be generated electricity to lower storage reservoir.
PT frequency measurements：It is amplified for speed regulator frequency measurement using the residual pressure signal of machine potential transformer, even if generator
Non- excitation boosting is also suitable.
Commutate knife for five poles：Commutation disconnecting link between pump-storage generator generator outlet breaker and main transformer,
Voltage phase sequence during for switching unit generation, drawing water, referred to as (PRD).
Fig. 1 is a kind of structural representation of the rotation direction detecting system of pump-storage generator provided by the utility model, please be joined
See Fig. 1, system provided by the utility model includes hydroenergy storage station 100 and the rotation direction detection means of pump-storage generator
200。
In the prior art, the common method of the electric detection unit rotation direction of hydroenergy storage station is preset method, i.e., in unit
The rotation direction of unit is first set before rotating, then drives five poles commutation knife action.The rotation direction of unit just on the basis of PRD state,
Each subsystem confirms current unit rotation direction by detecting PRD state parameter, and controls the respective equipment to transport based on this
OK.It is presetting system using the method for detecting PRD positions to detect unit rotation direction be false.
Fig. 2 is a kind of structural representation of the rotation direction detection means of pump-storage generator provided by the utility model, please be joined
Fig. 2 is read, rotation direction detection means provided by the utility model is applied to hydroenergy storage station, and the rotation direction detection means includes simulation
Measuring part 10 and the speed measuring fluted disc 20 on the big axle of the pump-storage generator of hydroenergy storage station.
Wherein, the speed measuring fluted disc is equidistantly to cut the circular zigzag formed, including tooth top 21 and bottom of the tooth 22.In Fig. 2
In shown specific embodiment, the fluted disc is 20 Equal rounds, including 10 bottom of the tooth, 10 tooth tops, is only for example herein, not
In same embodiment, speed measuring fluted disc can be different number of Equal round.
The analogue measurement part 10 includes：
Multiple probes 11 for pointing to the big axle axis direction, for output pulse signal.In one kind of the present utility model
In embodiment, when the probe is relative with the tooth top, the pulse signal of the probe output is high level signal, works as institute
State probe it is relative with the bottom of the tooth when, it is described probe export pulse signal be low level signal.
In the utility model, the multiple probe need to be arranged in the range of a tooth top side by side.Fig. 5 is that this practicality is new
Fluted disc probe scheme of installation in the specific embodiment that type provides, referring to Fig. 5, in the specific embodiment, the number of probe
Mesh is 3, and three probes are installed in the range of a tooth top.
The analogue measurement unit 12 being connected with the multiple probe, for generating pulse square according to the pulse signal
Battle array, the rotation direction testing result of the pump-storage generator is exported according to the dither matrix.
Figure 18 is analogue measurement unit in a kind of rotation direction detection means of pump-storage generator provided by the utility model
Structural representation, refers to Figure 18, and the analogue measurement unit includes：
Analog-digital converter 13, for carrying out analog-to-digital conversion to the analog pulse signal, obtain digital pulse signal；
Digital storage 14, it is connected with the analog-digital converter, for storing the digital pulse signal；
Dither matrix memory 15, it is connected with the digital storage, for the digital pulse signal to be assigned to
The dither matrix variable prestored, obtains dither matrix.
In specific embodiment of the utility model, in all specific embodiments as shown in Figures 3 to 5, the fluted disc is
20 Equal rounds, including 10 bottom of the tooth, 10 tooth tops, the not equipartition rate of the fluted disc<=0.05, the facewidth>20mm, transverse tooth thickness>20mm,
The probe is 3.The dither matrix variable prestored is set to Pos, then after pump-storage generator starts, it is assumed that most initial survey
The measured values of 3 probes are measured when being 1, probe measured value is assigned to variable Pos, continues the measured value of detection probe, when have 1 or
Multiple probes record each changing value after measured value change occurs and are assigned to Pos, until detecting the measured value of 3 probes for the 2nd time
It is 1, finally gives dither matrix.
Matrix storage 18 clockwise, for storing the up time pin matrix tube pre-set, the up time pin matrix tube is basis
The big axle dextrorotation pulse signal generation that the multiple probe is sent when circling；
Matrix storage 17 counterclockwise, for storing the inverse time pin matrix tube pre-set, the inverse time pin matrix tube is basis
The big axle dextrorotation pulse signal generation that the multiple probe is sent when circling.
In the utility model, analog-digital converter, digital storage, dither matrix memory, matrix storage clockwise
And matrix storage can realize that the utility model is to the said equipment by known device of the prior art counterclockwise
Concrete model does not limit.
Below by taking pump-storage generator rotate counterclockwise as an example, inverse time pin matrix tube, the preset procedures of up time pin matrix tube are described in detail.
Illustrated by taking the specific embodiment shown in Fig. 3 to Fig. 5 as an example.In this embodiment, the fluted disc is 20 Equal rounds, including 10
Individual bottom of the tooth, 10 tooth tops, the not equipartition rate of the fluted disc<=0.05, the facewidth>20mm, transverse tooth thickness>20mm, the probe are 3.
A variables D ir_x is designed first to represent the state of probe 1,2,3,
I.e.：Dir_x=[1 state of probe, 2 states of popping one's head in, 3 states of popping one's head in].
Fig. 6 to Figure 11 is big axle rotate counterclockwise probe state change map in specific embodiment provided by the utility model,
The relative position change procedure of probe and fluted disc when the process illustrates big axle rotate counterclockwise one week.
As shown in Figure 6：Now Dir_1=[1,1,1]；
As shown in Figure 7：Now Dir_2=[1,1,0]；
As shown in Figure 8：Now Dir_3=[1,0,0]；
As shown in Figure 9：Now Dir_4=[0,0,0]；
As shown in Figure 10：Now Dir_5=[0,0,1]；
As shown in figure 11：Now Dir_6=[0,1,1].
When therefore can sum up big axle rotate counterclockwise one week, the state change process of probe is as shown in table 2 below：
Table 2
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | |
| Probe 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 |
| Probe 2 | 1 | 1 | 0 | 0 | 0 | 1 | 1 |
| Probe 3 | 1 | 0 | 0 | 0 | 1 | 1 | 1 |
Dir=[Dir_1, Dir_2, Dir_3, Dir_4, Dir_5, Dir_6] is made, therefore upper table 2 can be reduced to Dir-
Matrix during expression machine water-storage group rotate counterclockwise is inverse time pin matrix tube, shown in expression formula such as following formula (1)：
Therefore, the inverse time pin matrix tube pre-set stored in matrix storage counterclockwise is as above shown in formula (1).
Figure 12 to Figure 17 is that big axle turns clockwise probe state change map in specific embodiment provided by the utility model,
The process illustrates the relative position change procedure of probe and fluted disc when big axle dextrorotation is circled.
As shown in figure 12：Now Dir_1=[1,1,1]；
As shown in figure 13：Now Dir_2=[0,1,1]；
As shown in figure 14：Now Dir_3=[0,0,1]；
As shown in figure 15：Now Dir_4=[0,0,0]；
As shown in figure 16：Now Dir_5=[1,0,0]；
As shown in figure 17：Now Dir_6=[1,1,0]；
When therefore can sum up big axle dextrorotation and circle, the state change process of probe is as shown in table 3 below：
Table 3
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | |
| Probe 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 |
| Probe 2 | 1 | 1 | 0 | 0 | 0 | 1 | 1 |
| Probe 3 | 1 | 1 | 1 | 0 | 0 | 0 | 1 |
Therefore upper table 3 can be reduced to Dir+Represent matrix i.e. up time pin matrix tube when unit turns clockwise, expression formula
As shown in following formula (2)：
Therefore, the up time pin matrix tube pre-set stored in matrix storage clockwise is as above shown in formula (2).
First with arithmetic unit 16, be connected with the dither matrix memory, matrix storage clockwise, for will described in
Dither matrix is taken with the up time pin matrix tube and computing, when the result that described first exports with arithmetic unit is 1, the rotation
It is to turn clockwise to testing result；
Second with arithmetic unit 19, be connected with the dither matrix memory, matrix storage counterclockwise, for will described in
Dither matrix is taken with the inverse time pin matrix tube and computing, when it is 1 to take the result obtained with computing, the rotation direction detection knot
Fruit is rotate counterclockwise.
It is the rotation direction detection means and system of a kind of pump-storage generator provided by the utility model as described above, leads to
The big axle crossed in the pump-storage generator of hydroenergy storage station installs speed measuring fluted disc, measures the dynamic displacement and assignment of holes probe
To dither matrix variable set in advance, obtain dither matrix, so by with arithmetic unit by dither matrix and up time pin matrix tube
Up time pin matrix tube, the inverse time pin matrix tube stored in memory, matrix storage counterclockwise is taken finally to determine machine with computing
The direction of rotation of group, to realize the operating condition that unit is accurately determined by detecting the direction of rotation of unit in real time, effectively control
The auxiliary equipment operation of unit processed.
Specific embodiment is applied in the utility model to be set forth principle of the present utility model and embodiment, with
The explanation of upper embodiment is only intended to help and understands method and its core concept of the present utility model；Meanwhile for this area
Those skilled in the art, according to thought of the present utility model, there will be changes, comprehensive in specific embodiments and applications
Upper described, this specification content should not be construed as to limitation of the present utility model.
Claims (9)
1. a kind of rotation direction detection means of pump-storage generator, it is characterized in that, the rotation direction detection means of the pump-storage generator
Applied to hydroenergy storage station, the rotation direction detection means of the pump-storage generator includes analogue measurement part and installed in taking out
Speed measuring fluted disc on the big axle of the pump-storage generator of water storage station,
Wherein, the speed measuring fluted disc is equidistantly to cut the circular zigzag formed, including tooth top and bottom of the tooth；
The analogue measurement part includes probe and analogue measurement unit；
Multiple probes for pointing to the big axle axis direction, for exporting analog pulse signal；
The analogue measurement unit being connected with the multiple probe, including：
Analog-digital converter, for carrying out analog-to-digital conversion to the analog pulse signal, obtain digital pulse signal；
Digital storage, it is connected with the analog-digital converter, for storing the digital pulse signal；
Dither matrix memory, it is connected with the digital storage, is deposited in advance for the digital pulse signal to be assigned to
The dither matrix variable of storage, obtains dither matrix；
Matrix storage clockwise, for storing the up time pin matrix tube pre-set；
Matrix storage counterclockwise, for storing the inverse time pin matrix tube pre-set；
First and arithmetic unit, it is connected with the dither matrix memory, matrix storage clockwise, for by the pulse square
Battle array is taken with the up time pin matrix tube and computing, when the result that described first exports with arithmetic unit is 1, the rotation direction detection
As a result it is to turn clockwise；
Second and arithmetic unit, it is connected with the dither matrix memory, matrix storage counterclockwise, for by the pulse square
Battle array is taken with the inverse time pin matrix tube and computing, and when it is 1 to take the result obtained with computing, the rotation direction testing result is inverse
Hour hands rotate.
2. the rotation direction detection means of pump-storage generator according to claim 1, it is characterized in that, when the probe with it is described
When tooth top is relative, the pulse signal is high level signal；When the probe is relative with the bottom of the tooth, the pulse signal is
Low level signal.
3. the rotation direction detection means of pump-storage generator according to claim 2, it is characterized in that, the fluted disc is 20 deciles
Circle, including 10 bottom of the tooth and 10 tooth tops.
4. the rotation direction detection means of pump-storage generator according to claim 3, it is characterized in that, the not decile of the fluted disc
Rate<=0.05, the facewidth>20mm, transverse tooth thickness>20mm.
5. the rotation direction detection means of pump-storage generator according to claim 4, it is characterized in that, the number of the probe is
3。
6. the rotation direction detection means of pump-storage generator according to claim 5, it is characterized in that, 3 probes be arranged on
In 18 ° of the concentric circles of the big axle.
7. the rotation direction detection means of pump-storage generator according to claim 6, it is characterized in that, 3 probes are arranged side by side
In the range of a tooth top.
8. the rotation direction detection means of the pump-storage generator according to claim 6 or 7, it is characterized in that, the probe is set
At from the fluted disc 3mm to 5mm.
9. a kind of rotation direction detecting system of pump-storage generator, it is characterized in that, the rotation direction detecting system of the pump-storage generator
The rotation direction detection means of pump-storage generator including hydroenergy storage station and as described in claim 1 to 8 any one.
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| CN110244200A (en) * | 2019-05-22 | 2019-09-17 | 国家电网有限公司 | A kind of simulation system and its method of energization rotating structural elements fusing process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110244200A (en) * | 2019-05-22 | 2019-09-17 | 国家电网有限公司 | A kind of simulation system and its method of energization rotating structural elements fusing process |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |