CN205478089U - Hydroelectric set power regulating system - Google Patents
Hydroelectric set power regulating system Download PDFInfo
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- CN205478089U CN205478089U CN201620094748.7U CN201620094748U CN205478089U CN 205478089 U CN205478089 U CN 205478089U CN 201620094748 U CN201620094748 U CN 201620094748U CN 205478089 U CN205478089 U CN 205478089U
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- power
- active power
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- speed governing
- speed regulator
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- 230000033228 biological regulation Effects 0.000 claims description 19
- 238000012544 monitoring process Methods 0.000 claims description 12
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- 230000009365 direct transmission Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
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Classifications
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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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Abstract
The utility model relates to a hydroelectric set power regulating system, including monitored control system, speed regulator and power acquisition unit, be provided with controller and speed governing calculating unit in the speed regulator, monitored control system signal output part connects speed governing calculating unit first input end, power acquisition unit output is connected speed governing calculating unit second input, speed governing calculating unit output is connected the controller input end. This power regulating system is monitored control system's active power command direct transmission to speed regulator, adjusts generating set's active power by the speed regulator, can adjust the command to active power with active power fast, has guaranteed the quick -action nature that regulating set exerted oneself, has reduced this intermediate link of monitored control system monitored control system 0 load, has improved monitored control system 1's efficiency and accuracy.
Description
Technical field
This utility model relates to hydroelectric power plant's active power regulation technical field, is specifically related to a kind of hydrogenerator
Group power regulating system.
Background technology
At present, each bulk power grid is increasingly strict to the quality requirements of the active power of each hydroelectric power plant, power scheduling system
The equipment of system is also gradually improved, stricter, such as Central China Power Grid to the rate requirement of hydroelectric power plant's on-load
The rate requirement of administrative hydroelectric power plant band active power has been reached 80% rated load/minute.
The hydraulic turbine has the biggest inertia and hysteresis quality, and the change of hydroelectric power plant's head is likely to very frequent, if right
The requirement of burden with power regulations speed is the highest, then the pid of monitoring system controls to be difficult to by one group or several groups ginseng
Number realizes, and often after parameter adjustment, reaches requirement reluctantly, and even a few hours, number after a couple of days
After minute, because the change of the change of head, governor oil pressure and oil temperature, speed regulator combination curve or regulation
The factors such as parameter imperfection, pid parameter is inadaptable again, and during regulation load, overshoot is even shaken seriously, this
Sample just proposes a new difficult problem to computer supervisory control system.
And the most conventional hydroelectric power plant's active power regulation is realized by the existing ground lcu of computer supervisory control system,
Now lcu collects real value of active power of unit, by the main plc program of existing ground lcu, according to meritorious
The desired value of power and real value of sending out carry out pid computing, and at each pid execution cycle, output is progressively successively decreased
Pulse width signal, drive and increase accordingly, subtract meritorious relay synchronization action and involution, and increase, subtract meritorious,
These 4 relays idle, are connected with speed regulator system, use hard wired mode by relay output contact
Reach speed regulator, governor work in aperture pattern, according to relay node signal to unit guide vane opening,
Blade aperture (Kaplan turbine) is adjusted, and then reaches to regulate the purpose of unit active power.
Conventional hydropower factory active power regulation system structure is that LCU for generator set is gained merit PID control-speed regulator pulse
The version of regulation, so gains merit PID at the many local LCUs of whole active power regulation link
Control this intermediate link, cause the control lag change in active power of active power, because for adjusting
A servo system has the most been become, when governor work is in aperture pattern, the most responsible reception for speed device
The regulation pulse of monitoring output, is converted into aperture by regulation pulse and gives, open unit guide vane opening and blade
Degree is adjusted, and how to change regardless of unit active power, and speed regulator is for active power regulation
One open loop link, so frequently can lead to easily cause overshoot during speed regulator regulation unit output, then adds
The change of upper unit active power inherently lags behind the change of guide vanes of water turbine aperture, and waits monitoring now
LCU PID module is reacted when being adjusted again, and instruction has lagged behind the change of active power, institute
It is difficult to ensure that with active power regulation precision.
Utility model content
In order to overcome defect present in above-mentioned prior art, the purpose of this utility model is to provide a kind of water wheels
Generating set power regulation system, this system can the power of turbine-generator units fast and accurately be adjusted.
To achieve these goals, this utility model provides a kind of turbine-generator units power regulating system,
Including monitoring system, speed regulator and power collecting unit, in described speed regulator, it is provided with controller and velometer
Calculating unit, described monitoring-controlling system signal outfan connects described speed governing computing unit first input end, described merit
Rate collecting unit outfan connects described speed governing computing unit the second input, and described speed governing computing unit exports
End connects described controller input；
Described monitoring system monitors whether generating set generates electricity in real time, as being in generating state, then to described tune
Speed device sends active power desired value, and described power collecting unit Real-time Collection generating set active power is actual
Value is also sent to described speed regulator, and described speed regulator is by real to the active power desired value received and active power
Actual value calculates both differences by described speed governing computing unit, and operation result is given to described controller, institute
State controller according to operation result real-time effect in generating set, active power actual value is adjusted to wattful power
Rate desired value.
The active power desired value of monitoring system is conveyed directly to speed regulator, by speed governing by this power regulating system
The active power of device regulator generator group, it is possible to active power is adjusted to active power desired value rapidly,
Ensure that the quick-action of regulation unit output, decrease monitoring system and actively regulate this intermediate link of load,
Improve efficiency and the accuracy of power adjustments.
Further, also including meritorious power target value acquiring unit, described active power desired value obtains single
Unit's outfan is connected to described monitoring system input.When load changes, active power desired value is
Different, the setting of active power desired value acquiring unit makes this power regulating system become in load
During change equally applicable.
Further, described speed regulator also includes comparator, the first input end of described comparator and second defeated
Entering end and input described active power desired value and active power actual value respectively, its outfan is connected to described control
Device processed；
Described comparator is used for the absolute difference of active power desired value and active power actual value with pre-
If adjustment threshold value compare, if absolute difference more than preset adjustment threshold value, described controller determines
Adjust the output of generating set；If absolute difference is less than the adjustment threshold value preset, described controller is true
Surely need not adjust the output of generating set.So in active power actual value and active power desired value
Absolute difference in allowed limits time, it is to avoid speed regulator still carries out power adjustments to generating set
Possibility, decrease energy loss.
Further, described controller according to operation result real-time effect in the stator relay of described generating set
Device and blade servomotor are to realize the regulation of power.
Additional aspect of the present utility model and advantage will part be given in the following description, and part will be from following
Description in become obvious, or recognized by practice of the present utility model.
Accompanying drawing explanation
Embodiment is retouched by above-mentioned and/or additional aspect of the present utility model and advantage from combining accompanying drawings below
Will be apparent from easy to understand in stating, wherein:
Fig. 1 is theory diagram of the present utility model.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, its
In the most same or similar label represent same or similar element or there is same or like function
Element.The embodiment described below with reference to accompanying drawing is exemplary, is only used for explaining this utility model,
And it is not intended that to restriction of the present utility model.
In description of the present utility model, unless otherwise prescribed and limit, " the peace it should be noted that term
Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be mechanical connection or electrically connect, it is possible to
To be the connection of two element internals, can be to be joined directly together, it is also possible to be indirectly connected to by intermediary,
For the ordinary skill in the art, specifically containing of above-mentioned term can be understood as the case may be
Justice.
As it is shown in figure 1, the utility model proposes a kind of turbine-generator units power regulating system, including prison
Ore-controlling Role, speed regulator, active power desired value acquiring unit and power collecting unit, be provided with in speed regulator
Controller and speed governing computing unit, active power desired value acquiring unit outfan is connected to monitoring system input
End, monitoring-controlling system signal outfan connects speed governing computing unit first input end, power collecting unit outfan
Connecting speed governing computing unit the second input, speed governing computing unit outfan connects controller input.
Monitoring system monitors whether generating set generates electricity in real time, as being in generating state, then sends to speed regulator
Active power desired value, power collecting unit Real-time Collection generating set active power actual value also is sent to adjust
Speed device, carry out in speed regulator closed loop regulation, specially speed regulator by the active power desired value that receives and
Active power actual value calculates both differences by speed governing computing unit, and speed governing computing unit is directly with wattful power
Rate desired value carries out PID arithmetic with the deviation of current active power actual value, and is given to operation result control
Device, active power actual value in generating set, is adjusted to meritorious by controller according to operation result real-time effect
Power target value.When controller according to operation result real-time effect in generating set time, mainly act on send out
The guide vane servomotor of group of motors and blade servomotor are to realize the regulation of power.
In the present embodiment, speed governing computing unit is with active power desired value and current active power actual value
Deviation carry out PID arithmetic, concrete PID arithmetic method can use prior art.
As the preferred version of the present embodiment, the speed regulator of this power speed control system also includes comparator, compares
The first input end of device and the second input input active power desired value and active power actual value respectively, its
Outfan is connected to controller.
Comparator for by the absolute difference of active power desired value and active power actual value with preset
Adjustment threshold value compares, if absolute difference is more than the adjustment threshold value preset, controller determines adjustment generating
The output of unit；If absolute difference less than preset adjustment threshold value, controller determine need not adjust
The output of generating set.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ",
It is concrete that the description of " concrete example " or " some examples " etc. means to combine this embodiment or example describes
Feature, structure, material or feature are contained at least one embodiment of the present utility model or example.?
In this specification, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.And
And, the specific features of description, structure, material or feature can in any one or more embodiments or
Example combines in an appropriate manner.
Embodiment the most of the present utility model, those of ordinary skill in the art is permissible
Understand: can these embodiments be carried out multiple in the case of without departing from principle of the present utility model and objective
Changing, revise, replace and modification, scope of the present utility model is limited by claim and equivalent thereof.
Claims (4)
1. a turbine-generator units power regulating system, it is characterized in that, including monitoring system, speed regulator and power collecting unit, controller and speed governing computing unit it is provided with in described speed regulator, described monitoring-controlling system signal outfan connects described speed governing computing unit first input end, described power collecting unit outfan connects described speed governing computing unit the second input, and described speed governing computing unit outfan connects described controller input.
Turbine-generator units power regulating system the most according to claim 1, it is characterised in that also including meritorious power target value acquiring unit, described active power desired value acquiring unit outfan is connected to described monitoring system input.
Turbine-generator units power regulating system the most according to claim 1, it is characterized in that, described speed regulator also includes comparator, the first input end of described comparator and the second input input described active power desired value and active power actual value respectively, and its outfan is connected to described controller.
Turbine-generator units power regulating system the most according to claim 1, it is characterised in that described controller according to operation result real-time effect in the guide vane servomotor of described generating set and blade servomotor to realize the regulation of power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620094748.7U CN205478089U (en) | 2016-01-29 | 2016-01-29 | Hydroelectric set power regulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620094748.7U CN205478089U (en) | 2016-01-29 | 2016-01-29 | Hydroelectric set power regulating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205478089U true CN205478089U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620094748.7U Expired - Fee Related CN205478089U (en) | 2016-01-29 | 2016-01-29 | Hydroelectric set power regulating system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061132A (en) * | 2016-12-15 | 2017-08-18 | 贵州北盘江电力股份有限公司董箐发电厂 | A kind of power station speed regulator power closed-loop adjustment improves power adjusting speed and the regulating system of degree of regulation |
| CN112343763A (en) * | 2020-10-16 | 2021-02-09 | 四川华能宝兴河水电有限责任公司 | Method and system for adjusting power pulse of approach type hydropower station |
| CN112530151A (en) * | 2020-11-25 | 2021-03-19 | 重庆中节能悦来能源管理有限公司 | Energy supply system capable of carrying out wireless monitoring |
| CN114396353A (en) * | 2021-12-18 | 2022-04-26 | 华能澜沧江水电股份有限公司 | Method and system for judging power oscillation of speed regulator of water turbine |
-
2016
- 2016-01-29 CN CN201620094748.7U patent/CN205478089U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061132A (en) * | 2016-12-15 | 2017-08-18 | 贵州北盘江电力股份有限公司董箐发电厂 | A kind of power station speed regulator power closed-loop adjustment improves power adjusting speed and the regulating system of degree of regulation |
| CN107061132B (en) * | 2016-12-15 | 2019-07-09 | 贵州北盘江电力股份有限公司董箐发电厂 | A kind of power station governor power closed-loop adjustment improves the regulating system of power regulation speed and degree of regulation |
| CN112343763A (en) * | 2020-10-16 | 2021-02-09 | 四川华能宝兴河水电有限责任公司 | Method and system for adjusting power pulse of approach type hydropower station |
| CN112530151A (en) * | 2020-11-25 | 2021-03-19 | 重庆中节能悦来能源管理有限公司 | Energy supply system capable of carrying out wireless monitoring |
| CN114396353A (en) * | 2021-12-18 | 2022-04-26 | 华能澜沧江水电股份有限公司 | Method and system for judging power oscillation of speed regulator of water turbine |
| CN114396353B (en) * | 2021-12-18 | 2023-11-10 | 华能澜沧江水电股份有限公司 | Water turbine speed regulator power oscillation judging method and system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 |
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| CF01 | Termination of patent right due to non-payment of annual fee |