CN110159480A - A kind of hydrogovernor control unit and method for building up with hydraulic pressure phase lead compensation - Google Patents
A kind of hydrogovernor control unit and method for building up with hydraulic pressure phase lead compensation Download PDFInfo
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- CN110159480A CN110159480A CN201910343378.4A CN201910343378A CN110159480A CN 110159480 A CN110159480 A CN 110159480A CN 201910343378 A CN201910343378 A CN 201910343378A CN 110159480 A CN110159480 A CN 110159480A
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- hydraulic pressure
- pressure phase
- control unit
- hydrogovernor
- compensation
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 230000004069 differentiation Effects 0.000 claims abstract description 7
- 230000001052 transient effect Effects 0.000 abstract description 8
- 238000004458 analytical method Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000004088 simulation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
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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
- F03B15/02—Controlling by varying liquid flow
- F03B15/04—Controlling by varying liquid flow of turbines
- F03B15/06—Regulating, i.e. acting automatically
-
- 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
- F05B2270/70—Type of control algorithm
- F05B2270/706—Type of control algorithm proportional-integral-differential
-
- 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
Abstract
The present invention relates to a kind of hydrogovernor control units and method for building up with hydraulic pressure phase lead compensation, belong to the hydraulic turbine and Hydraulic Power Unit stability analysis and control technology field.Hydraulic pressure phase compensation link is added in the PID control unit of hydrogovernor, wherein the transmission function form of hydraulic pressure phase compensation link is as follows:KAIt is gain coefficient；K1It is the time constant for filtering link, second；K2、K3It is the time constant of differentiation element, second；S is Laplace operator.This hydrogovernor control unit with hydraulic pressure phase lead compensation provides a kind of convenient and fast ways and means for research Hydraulic Power System and unit transient process and its stability and Hydraulic Power Unit control design case.
Description
Technical field
The present invention relates to a kind of hydrogovernor control units and method for building up with hydraulic pressure phase lead compensation, belong to
The hydraulic turbine and Hydraulic Power Unit stability analysis and control technology field.
Background technique
The research that waterpower dynamic influences unit and grid stability, from initially grinding using Adaptive System of Water-Turbine Engine as core
Study carefully, gradually expands to the comprehensive analysis of water dispenser electricity multisystem.Moreover, simple combination of the research method from water dispenser electricity multisystem, hair
It opens up and is studied by the Internal dynamics coupling mechanism of core of multi- scenarios method dynamics.By Hydraulic Power System and unit and its controller
It is included in the hot issue for carrying out that simulation calculation is Recent study under Unified frame.
During the control and regulation of Hydraulic Power Unit system, water pressure fluctuations cause turbine mechanical power swing, Jin Erzao
It is fluctuated at generator power, is the central factor for influencing unit allocation and adjusting stability and quick-action.From the structure of Hydraulic Power System
And its dynamic characteristic angle changing, research inhibit the technology and methods of water pressure fluctuations, progress is relatively slow.This kind of side
Most typical technology is surge shaft technology in method, from surge shaft form to Structure of Surge Tank parameter, and its to great fluctuation process minor swing
The relevant issues such as influence compare systematic research.In power station, pipeline hydraulic pressure fluctuation is drawn by the movement of guide vane
It rises, therefore, it is most natural idea that waterpower dynamic is contacted with governor control foundation.It is related to introduce asking for hydraulic signal
Topic, has particular study, for example, by using several control algolithms of PI, PID of water column feedback signal, to water pressure fluctuations both at home and abroad
Inhibition plays certain effect.It substantially sees, this water column feedback belongs to feedback control scope.
From the point of view of the overall structure of Adaptive System of Water-Turbine Engine, governor control unit output signal through hydraulic amplifying unit and
Main servomotor arrives guide vane again, and guide vane movement causes pipeline hydraulic pressure to fluctuate.During this, water pressure fluctuations obviously lag governor control
The output signal of unit processed.In the transient process that unit is controlled to adjust, this lag is to lead to hydraulic turbine output power
The main reason for fluctuating range is excessive.
It is found by theoretical research, the auxiliary signal using hydraulic pressure phase signal as governor control unit can be with one
Cause the active fluctuation of Hydropower Unit.Therefore, the present invention proposes that a kind of hydrogovernor control with hydraulic pressure phase lead compensation is single
Member and method for building up, improve the control performance of governor.
Summary of the invention
For the above-mentioned problems of the prior art and deficiency, the present invention provides a kind of water with hydraulic pressure phase lead compensation
Turbine governor control unit and method for building up.This hydrogovernor control unit with hydraulic pressure phase lead compensation, to grind
Study carefully Hydraulic Power System and unit transient process and its stability and Hydraulic Power Unit control design case provides a kind of convenient and fast method and hand
Section.The invention is realized by the following technical scheme.
A kind of hydrogovernor control unit with hydraulic pressure phase lead compensation, in the PID control of hydrogovernor
Hydraulic pressure phase compensation link is added in unit, wherein the transmission function form of hydraulic pressure phase compensation link is as follows:KAIt is gain coefficient；K1It is the time constant for filtering link, second；K2、K3Be differentiation element time it is normal
Number, second；S is Laplace operator.
A kind of method for building up of the hydrogovernor control unit with hydraulic pressure phase lead compensation, specific steps are such as
Under:
Step 1, building hydraulic pressure phase compensation link, the transmission function form of hydraulic pressure phase compensation link are as follows:KAIt is gain coefficient；K1It is the time constant for filtering link, second；K2、K3Be differentiation element time it is normal
Number, second；S is Laplace operator；It is imitative that the parameter of the hydraulic pressure phase compensation link can directly give or combine Practical Project to pass through
Really it is calculated；The hydraulic pressure phase compensation link meets following three condition simultaneously:
If water pressure fluctuations frequency is ωg, meeting K1ωgUnder conditions of > > 1, the gain for filtering link is 1.
Select K2<K3, then second transmission function can provide leading phase angle.
Gain coefficient KAFor adjusting hydraulic pressure amplitude, avoid amplitude is excessive from flooding PID output signal.
The hydraulic pressure phase compensation link of step 1 is realized by software programming, and is added to PID control unit structure by step 2
At the hydrogovernor control unit with hydraulic pressure phase lead compensation.Modern microcomputer governor all has certain calculation process
Ability, phase compensation link here is simultaneously uncomplicated, can be completed using the operation processing unit of microcomputer governor.
After the step 2 constitutes the hydrogovernor control unit with hydraulic pressure phase lead compensation, using analogue simulation
Method determines the various parameter values of phase compensation unit.
The beneficial effects of the present invention are:
1, the control mode based on hydraulic pressure phase lead compensation is solved and is traditionally consolidated using water pressure fluctuations amplitude compensation
Some control lag issues.
2, the realization of software algorithm module can be used, in existing tune in hydraulic pressure phase-compensatory contro mode proposed by the invention
The algoritic module for increasing hydraulic pressure phase compensation in fast device control unit can be realized, using convenient.
3, hydraulic pressure phase compensation mode proposed by the present invention is also applied for other kinds of governor control unit, only needs
Governor control unit is added using hydraulic pressure Phase Compensation Algorithm module of the invention as auxiliary signal.
Detailed description of the invention
Fig. 1 is the hydrogovernor control unit structural block diagram of the invention with hydraulic pressure phase lead compensation；
Fig. 2 is the transient state comparison diagram of hydraulic turbine head under 1 fault disturbance of the embodiment of the present invention；
Fig. 3 is the transient state comparison of generator active power under 1 fault disturbance of the embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and detailed description, the invention will be further described.
Embodiment 1
This example is the calculating carried out with the data of some hydropower station.
Single machine single tube diversion system, major parameter setting are as follows: duct length L=1000 (rice), caliber D=3.5 (rice), volume
Constant flow Qr=53.5 (cube meter per seconds), rated head Hr=312 (rice), water-hammer wave speed α=1100 (meter per second), main servomotor
Time constant Ty=0.5 (second).
Governor is using typical parallel connection PID structure, control parameter: KP=5.0, KD=2.5, KI=1.5, bp=0.04；
Exciter control system uses the PID control of set end voltage, KP1=10, KI1=5, KD1=0.001.Hydraulic Power System and the hydraulic turbine are adopted
With elastic water attack hydraulic turbine model, generator and power grid use three rank generator model of one machine infinity bus system, when unit set inertia
Between constant Tj=8.999 (seconds), generator Equivalent damping coefficient D=5.
Emulate operating condition: unit runs initial active pe=90% rated load, idle Qe=30%.In t=1 (second), power generation
Machine outlet line breaks down short circuit, in t=1.1 (second) failure removal.
The hydrogovernor control unit with hydraulic pressure phase lead compensation, in the PID control list of hydrogovernor
Hydraulic pressure phase compensation link is added in member, wherein the transmission function form of hydraulic pressure phase compensation link is as follows:KAIt is gain coefficient；K1It is the time constant for filtering link, second；K2、K3Be differentiation element time it is normal
Number, second；S is Laplace operator.After simulation analysis, K is chosenA=0.3, K1=10.0 (seconds), K2=0.05 (second), K3
=0.5 (second).
The method for building up of the hydrogovernor control unit with hydraulic pressure phase lead compensation, the specific steps of which are as follows:
Step 1, building hydraulic pressure phase compensation link, the transmission function form of hydraulic pressure phase compensation link are as follows:KAIt is gain coefficient；K1It is the time constant for filtering link, second；K2、K3Be differentiation element time it is normal
Number, second；S is Laplace operator；After simulation analysis, K is chosenA=0.3, K1=10.0 (seconds), K2=0.05 (second), K3
=0.5 (second)；
The hydraulic pressure phase compensation link of step 1 is realized by software programming, and is added to PID control unit structure by step 2
At the hydrogovernor control unit with hydraulic pressure phase lead compensation；Simulation method is finally used, determines phase compensation
The various parameter values of unit.
The transient state of the hydraulic turbine head of hydrogovernor control unit with hydraulic pressure phase lead compensation, and mended without phase
The transient state comparison diagram of the hydraulic turbine head repaid is as shown in Fig. 2, from figure 2 it can be seen that after with hydraulic pressure phase lead compensation, hydraulic pressure
The amplitude of fluctuation is obviously reduced.The generator active power of hydrogovernor control unit with hydraulic pressure phase lead compensation and
The generator active power comparison diagram of no phase compensation is as shown in figure 3, from figure 3, it can be seen that be added advanced with hydraulic pressure phase
After compensation, generator active power fluctuation amplitude is increased slightly, but the maximum amplitude of transient state initial phase is basically unchanged.
In conjunction with attached drawing, the embodiment of the present invention is explained in detail above, but the present invention is not limited to above-mentioned
Embodiment within the knowledge of a person skilled in the art can also be before not departing from present inventive concept
Put that various changes can be made.
Claims (3)
1. a kind of hydrogovernor control unit with hydraulic pressure phase lead compensation, it is characterised in that: in hydrogovernor
PID control unit in be added hydraulic pressure phase compensation link, wherein the transmission function form of hydraulic pressure phase compensation link is as follows:KAIt is gain coefficient；K1It is the time constant for filtering link, second；K2、K3Be differentiation element time it is normal
Number, second；S is Laplace operator.
2. a kind of foundation side of the hydrogovernor control unit according to claim 1 with hydraulic pressure phase lead compensation
Method, it is characterised in that specific step is as follows:
Step 1, building hydraulic pressure phase compensation link, the transmission function form of hydraulic pressure phase compensation link are as follows:KAIt is gain coefficient；K1It is the time constant for filtering link, second；K2、K3Be differentiation element time it is normal
Number, second；S is Laplace operator；
The hydraulic pressure phase compensation link of step 1 is realized by software programming, and is added to PID control unit and constitutes band by step 2
The hydrogovernor control unit of hydraulic pressure phase lead compensation.
3. the method for building up of the hydrogovernor control unit according to claim 2 with hydraulic pressure phase lead compensation,
It is characterized by: after the step 2 constitutes the hydrogovernor control unit with hydraulic pressure phase lead compensation, using emulation mould
Quasi- method, determines the various parameter values of phase compensation unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910343378.4A CN110159480A (en) | 2019-04-26 | 2019-04-26 | A kind of hydrogovernor control unit and method for building up with hydraulic pressure phase lead compensation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910343378.4A CN110159480A (en) | 2019-04-26 | 2019-04-26 | A kind of hydrogovernor control unit and method for building up with hydraulic pressure phase lead compensation |
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| CN110159480A true CN110159480A (en) | 2019-08-23 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54151741A (en) * | 1978-05-22 | 1979-11-29 | Toshiba Corp | Multi-stage hydraulic machine |
| CN101404043A (en) * | 2008-09-10 | 2009-04-08 | 陕西电力科学研究院 | Hydraulic turbine and its pressure discharge system simulation method |
| CN102052233A (en) * | 2010-12-23 | 2011-05-11 | 广东电网公司电力科学研究院 | Water turbine regulating system module used for stability analysis of power system |
| CN102629293A (en) * | 2012-03-29 | 2012-08-08 | 昆明理工大学 | Simulation calculation method for additional mechanical damping of hydropower set |
| CN104832349A (en) * | 2015-03-13 | 2015-08-12 | 周学福 | Hydraulic turbine with power compensation device |
-
2019
- 2019-04-26 CN CN201910343378.4A patent/CN110159480A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54151741A (en) * | 1978-05-22 | 1979-11-29 | Toshiba Corp | Multi-stage hydraulic machine |
| CN101404043A (en) * | 2008-09-10 | 2009-04-08 | 陕西电力科学研究院 | Hydraulic turbine and its pressure discharge system simulation method |
| CN102052233A (en) * | 2010-12-23 | 2011-05-11 | 广东电网公司电力科学研究院 | Water turbine regulating system module used for stability analysis of power system |
| CN102629293A (en) * | 2012-03-29 | 2012-08-08 | 昆明理工大学 | Simulation calculation method for additional mechanical damping of hydropower set |
| CN104832349A (en) * | 2015-03-13 | 2015-08-12 | 周学福 | Hydraulic turbine with power compensation device |
Non-Patent Citations (2)
| Title |
|---|
| 王家驹: "电力系统稳定器及其应用研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 钱晶: "抑制管道水压波动的调速侧实现方法", 《排灌机械工程学报》 * |
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Application publication date: 20190823 |
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