CN108173294A - A kind of intelligent power plant's power auto-control system based on Function Synthesis algorithm - Google Patents
A kind of intelligent power plant's power auto-control system based on Function Synthesis algorithm Download PDFInfo
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- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 12
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 32
- 238000011156 evaluation Methods 0.000 claims abstract description 19
- 230000001105 regulatory effect Effects 0.000 claims abstract description 12
- 238000005457 optimization Methods 0.000 claims abstract description 8
- 238000004364 calculation method Methods 0.000 claims abstract description 7
- 230000009467 reduction Effects 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 2
- 238000011217 control strategy Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000000205 computational method Methods 0.000 description 2
- TVZRAEYQIKYCPH-UHFFFAOYSA-N 3-(trimethylsilyl)propane-1-sulfonic acid Chemical compound C[Si](C)(C)CCCS(O)(=O)=O TVZRAEYQIKYCPH-UHFFFAOYSA-N 0.000 description 1
- 206010003830 Automatism Diseases 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/50—Controlling the sharing of the out-of-phase component
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The invention discloses a kind of intelligent power plant's power auto-control systems based on Function Synthesis algorithm, comprise the steps of：Step 1：Determine the evaluation index of a variety of Generation Control algorithms：It according to reactive power, the total regulated quantity of active power, is optimized according to optimization algorithm, the reactive power, active power to each unit are allocated；Step 2：Many algorithms are unified with standardization evaluation index：All arithmetic results are converted into the perunit value in 0~1 section so that the unit of regulating index minimum when the result of calculation of algorithms of different generates unified control strategy, i.e. upload control, the unit of regulating index maximum when downlink controls.The method of the present invention can be according to the different method of operation and operating condition, real-time control decision is made to full brand-name computer group, automatic maintenance busbar voltage or full factory's reactive power, active power are set-point at that time, and in reasonable distribution factory each unit reactive power and active power, so as to improve the overall operation in power plant level.
Description
Technical field
The present invention relates to a kind of intelligent power plant's power auto-control systems based on Function Synthesis algorithm, belong to intelligent hair
Electric control technical field.
Background technology
Intelligent grid is exactly the intelligence (intelligence electricity electric power) of power grid, and also referred to as " power grid 2.0 ", it is built upon integrated
, on the basis of high-speed bidirectional communication network, pass through it is advanced sensing and measuring technique, advanced equipment and technology, advanced control
The reliable of power grid, safety, economy, efficient, environmental-friendly is realized in the application of method processed and advanced DSS technology
With target safe to use, main feature include self-healing, excitation and including user, resist attack, provide meet 21 century use
The power quality of family demand, the access for allowing various different forms of electricity generation start electricity market and the optimization of assets is efficiently transported
Row.
In intelligent power generation control, between unit is ensured on the basis of reactive power, the total regulated quantity of active power, closed
Each unit of distributing to of reason must comply with certain principle, and different distribution methods is formed according to these principles, may be used：
Constant power factor, idle proportional assignment, similar adjustment nargin scheduling algorithm, but various algorithms of different calculate complicated, output result
Differ, algorithm scalability is bad, cause different units use Different Optimization algorithm when since result does not have comparativity
And control strategy can not be generated.
(1) constant power factoring method
Basic formula is that adjusting target is to ensure that the power factor of each unit is identical.
Constant power factoring method be mainly suitable for power plant unit safety margin in itself it is higher, mainly from operational management and
Determining idle, active distribution method in terms of economy.Computational methods are as follows：
Step 1)：Judge whether Yue Quan factories always idle bound Qtarget, as out-of-limit, take limit value, in conjunction with current total
Active P calculates plant-wide goal power factor
Step 2)：For specific unit, with reference to the power factor that unit is active and calculates, the idle mesh of specified unit is calculated
Scale value Qmtarget.
(2) method of equal proportion
The distribution basis of method of equal proportion assume that between former unit it is idle, to have the distribution of work be in a kind of reasonable shape of comparison
State, when being redistributed, target is that each unit has similar idle, active adjusting nargin after ensureing to adjust；Relatively
In etc. nargin adjust, adjust process it is shorter, range is smaller, and each unit is idle, the active value ratio that increases or decreases is identical, calculating
Method is as follows：
Step 1)：It is total idle, total active with total idle, the total active target of the full factory for issuing or calculating gained and current full factory
Total idle, total active target difference ∑ DQm is obtained
Step 2)：Idle, the active desired value of every unit is idle, active to be added on the basis of currently idle, active
Target difference is multiplied by coefficient of ratio DQm/ ∑s DQm.
DQm=Qmh-Qml
(3) Margin Methods such as
Fully consider the operating condition of every unit, ensureing the set end voltage of every machine in acceptability limit and has certain
Adjust nargin.Computational methods are as follows：
Step 1)：It reports, obtains adjustable according to the specific PQ operational limits figure of every unit and into mutually stagnant phase study
Idle, active upper limit Qmh, the lower limit Qml of unit current point of operation obtain adjustable total idle, active upper limit ∑ Qmh and lower limit
∑ Qml determines operating point deviation ratio Xk with reference to practical operating experiences.
Step 2)：Determine overall offset coefficient Qk.
Step 3)：Calculating provides idle, active power output target Qm that every unit determines.
Existing method there are the shortcomings that it is as follows：
1) algorithm comparison is complicated, and operation cost is higher；
2) algorithms of different output result differ, cause different units use Different Optimization algorithm when since result does not have
Control strategy can not be generated for comparativity；
3) algorithm configuration is dumb, it is impossible to extend.
Invention content
It is an object of the invention to overcome above-mentioned deficiency in the prior art, and offer is a kind of reasonable in design,
Operation is fast, at low cost, and different units can generate unified control strategy, and intelligent power plant's electric power based on Function Synthesis algorithm is certainly
Autocontrol system.
Technical solution is used by the present invention solves the above problems：A kind of intelligent power plant based on Function Synthesis algorithm
Power auto-control system, it is characterized in that, it comprises the steps of：
S01：Determine the evaluation index of a variety of Generation Control algorithms
It according to reactive power, the total regulated quantity of active power, is optimized according to optimization algorithm, to the idle work(of each unit
Rate, active power are allocated；
S02：Many algorithms are unified with standardization evaluation index
All arithmetic results are converted into the perunit value in 0~1 section, and are uniformly defined as down direction, 1 definition by 0
For up direction so that regulating index is minimum when the result of calculation of algorithms of different generates unified control strategy, i.e. upload control
Unit, downlink control when regulating index maximum unit.
The optimization algorithm evaluation index includes at least one or more of：
The evaluation index of constant power factoring method is：qGen/sqrt(qGen*qGen+pGen*pGen)；
The evaluation index of idle proportional assignment is：qGen/qRate；
It is similar adjustment Margin Method evaluation index be：qGen/fabs(qMax)(qGen>Or qGen/fabs (qMin) 0)
(qGen<0)；
Wherein：QGen represents that unit is idle, and pGen represents that unit is active, and qRate represents idle allocation proportion, and qMax is represented
The upper limit that unit is idle, qMin represent the idle lower limit of unit；
Use constant power factor method carry out Generation Control adjusting the step of for：
I) when busbar voltage increases, the complete idle increase of factory adjusts the unit of power factor value minimum, and target is so that each machine
Group power factor value is equal or approximately equal, and maintains busbar voltage to set-point；
Ii) when busbar voltage reduces, the complete idle reduction of factory adjusts the unit of power factor value maximum, and target is so that each
Power Factor value is equal or approximately equal, and maintains busbar voltage to set-point；
The step of idle proportional assignment method is used to carry out Generation Control adjusting for：
I) when busbar voltage increases, the complete idle increase of factory adjusts the idle unit for accounting for institute's allocation proportion minimum, and target is to make
Each unit is idle reaches the ratio respectively distributed, maintain busbar voltage to set-point；
Ii) when busbar voltage reduces, the complete idle reduction of factory adjusts the idle unit for accounting for institute's allocation proportion maximum, and target is
So that each unit is idle to reach the ratio respectively distributed, busbar voltage is maintained to set-point；
Use it is similar adjustment Margin Method carry out Generation Control adjusting the step of for：
Work as qGen>0, index is qGen/fabs (qMax)；
I) when busbar voltage increases, the complete idle increase of factory adjusts the idle unit for accounting for idle upper limit absolute value minimum, target
It is so that each unit Reactive Power Margin is equal or approximately equal, maintains busbar voltage to set-point；
Ii) when busbar voltage reduces, the complete idle reduction of factory adjusts the idle unit for accounting for idle upper limit maximum absolute value, mesh
Mark is so that each unit Reactive Power Margin is equal or approximately equal, and maintains busbar voltage to set-point；
Work as qGen<0, algorithm index is qGen/fabs (qMin)；
I) when busbar voltage increases, the complete idle increase of factory adjusts the idle unit for accounting for idle lower limit absolute value minimum, target
It is so that each unit Reactive Power Margin is equal or approximately equal, maintains busbar voltage to set-point；
Ii) when busbar voltage reduces, the complete idle reduction of factory adjusts the idle unit for accounting for idle lower limit maximum absolute value, mesh
Mark is so that each unit Reactive Power Margin is equal or approximately equal, and maintains busbar voltage to set-point；
Compared with prior art, the present invention haing the following advantages and effect：
1) present invention proposes the Generation Control optimization algorithm of a variety of simplification, and operation control is simple, quick；
2) the standardization evaluation index of more algorithms, the perunit value that all algorithms convert the result to 0~1 section (and are united
One is defined as down direction by 0,1 is defined as up direction) so that the result of calculation of algorithms of different is comparable, different machines
Group can generate unified control strategy；
3) algorithm is designed using plug-in type, and autgmentability is strong.
The method of the present invention is for power plant automatism voltage control (AVC), Automatic Generation Control (AGC), simplified distribution
Algorithm model, calculation processing speed are fast；The standardization evaluation index of more algorithms so that the result of calculation of algorithms of different has comparable
Property；Algorithm autgmentability is strong.Can real-time control decision be made to full brand-name computer group according to the different method of operation and operating condition,
And in reasonable distribution factory each unit reactive power and active power, so as to improve the overall operation in power plant level.
Description of the drawings
Fig. 1 is the system block diagram of the embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings and pass through embodiment the present invention is described in further detail, following embodiment is to this hair
Bright explanation and the invention is not limited in following embodiments.
As shown in Figure 1：
First, algorithm evaluation criterion is determined
The algorithm that the present invention designs is as shown in the table, wherein：QGen represents that unit is idle, and pGen represents that unit is active,
QRate represents idle allocation proportion, and qMax represents the idle upper limit of unit, and qMin represents the idle lower limit of unit.
Detailed description are as follows：
1) constant power factoring method
It is included in the method for the present invention and simplifies algorithm index as qGen/sqrt (qGen*qGen+pGen*pGen).
I) when busbar voltage increases, the complete idle increase of factory adjusts the unit of power factor value minimum, and target is so that each machine
Group power factor value is equal or approximately equal, and maintains busbar voltage to set-point；
Ii) when busbar voltage reduces, the complete idle reduction of factory adjusts the unit of power factor value maximum, and target is so that each
Power Factor value is equal or approximately equal, and maintains busbar voltage to set-point；
2) idle proportional assignment method
It is included in the method for the present invention and simplifies algorithm index as qGen/qRate.
I) when busbar voltage increases, the complete idle increase of factory adjusts the idle unit for accounting for institute's allocation proportion minimum, and target is to make
Each unit is idle reaches the ratio respectively distributed, maintain busbar voltage to set-point；
Ii) when busbar voltage reduces, the complete idle reduction of factory adjusts the idle unit for accounting for institute's allocation proportion maximum, and target is
So that each unit is idle to reach the ratio respectively distributed, busbar voltage is maintained to set-point；
3) similar adjustment Margin Method
Nargin algorithm was (qMax-qGen)/qMax (qGen originally>0)
(qMin-qGen)/qMin(qGen<0)
Herein, it is qGen/fabs (qMax) (qGen to simplify algorithm index in the present invention>0)
qGen/fabs(qMin)(qGen<0)。
Work as qGen>0, index is qGen/fabs (qMax)：
I) when busbar voltage increases, the complete idle increase of factory adjusts the idle unit for accounting for idle upper limit absolute value minimum, target
It is so that each unit Reactive Power Margin is equal or approximately equal, maintains busbar voltage to set-point；
Ii) when busbar voltage reduces, the complete idle reduction of factory adjusts the idle unit for accounting for idle upper limit maximum absolute value, mesh
Mark is so that each unit Reactive Power Margin is equal or approximately equal, and maintains busbar voltage to set-point；
Work as qGen<0, algorithm index is qGen/fabs (qMin)：
I) when busbar voltage increases, the complete idle increase of factory adjusts the idle unit for accounting for idle lower limit absolute value minimum, target
It is so that each unit Reactive Power Margin is equal or approximately equal, maintains busbar voltage to set-point；
Ii) when busbar voltage reduces, the complete idle reduction of factory adjusts the idle unit for accounting for idle lower limit maximum absolute value, mesh
Mark is so that each unit Reactive Power Margin is equal or approximately equal, and maintains busbar voltage to set-point；
2nd, more algorithms unify evaluation index
The present invention devises the standardization evaluation index of a set of algorithm, and all algorithms convert the result to 0~1 section
Perunit value (and be uniformly defined as down direction by 0,1 be defined as up direction) so that the result of calculation of algorithms of different has can
Than property, and with the unit of regulating index minimum when generating unified control strategy, i.e. upload control, regulating index when downlink controls
Maximum unit.
3rd, scalability
The realization of algorithm uses plug-in architecture technology, and plug-in unit is a kind of customized standard interface, mainly includes algorithm and notes
Volume interface and data interactive interface, expansion plugin refer to realize the execution unit of above-mentioned interface.The algorithm of the present invention is based on plug-in unit
Design, algorithm expanded function are stripped out from main system, reduce the complexity of system, and system is allowed to be easier to realize.Algorithm
Expanded function and main system by it is a kind of it is very loose in a manner of couple, the two can independently change in the case where keeping interface constant
And publication, reduce each module of system between mutual dependence, each algoritic module stand-alone development of system, deployment, maintenance, and according to
Demand is dynamically assembled, is detached, so as to ensure the scalability of algorithm.
Described in this specification above content is only illustrations made for the present invention.Technology belonging to the present invention
The technical staff in field can do described specific embodiment various modifications or additions or in a similar way
It substitutes, content without departing from description of the invention or surmounts range defined in the claims, this should all be belonged to
The protection domain of invention.
Claims (6)
1. a kind of intelligent power plant's power auto-control system based on Function Synthesis algorithm, it is characterized in that, it comprises the steps of：
Step 1：The evaluation index of a variety of Generation Control algorithms is determined according to reactive power, the total regulated quantity of active power, according to excellent
Change algorithm to optimize, the reactive power, active power to each unit are allocated；
Step 2：Many algorithms are unified with the perunit value that all arithmetic results are converted into 0~1 section by standardization evaluation index,
And uniformly down direction is defined as by 0,1 is defined as up direction so that the result of calculation of algorithms of different generates unified control
The unit of regulating index minimum during strategy, i.e. upload control, the unit of regulating index maximum when downlink controls.
2. intelligent power plant's power auto-control system according to claim 1 based on Function Synthesis algorithm, feature
It is that the optimization algorithm evaluation index includes at least one or more of：The evaluation index of constant power factoring method is：qGen/
sqrt(qGen*qGen+pGen*pGen)；The evaluation index of idle proportional assignment is：qGen/qRate；Similar adjustment nargin
The evaluation index of method is：qGen/fabs(qMax)(qGen>Or qGen/fabs (qMin) (qGen 0)<0)；Wherein：QGen is represented
Unit is idle, and pGen represents that unit is active, and qRate represents idle allocation proportion, and qMax represents the idle upper limit of unit, and qMin is represented
Unit is idle lower limit.
3. intelligent power plant's power auto-control system according to claim 2 based on Function Synthesis algorithm, feature
Be use constant power factoring method carry out Generation Control adjusting the step of for：
I) when busbar voltage increases, the complete idle increase of factory adjusts the unit of power factor value minimum, and target is so that each unit work(
Rate factor value is equal or approximately equal, and maintains busbar voltage to set-point；
Ii) when busbar voltage reduces, the complete idle reduction of factory adjusts the unit of power factor value maximum, and target is so that each unit
Power factor value is equal or approximately equal, and maintains busbar voltage to set-point.
4. intelligent power plant's power auto-control system according to claim 2 based on Function Synthesis algorithm, feature
Be the step of idle proportional assignment method is used to carry out Generation Control adjusting for：
I) when busbar voltage increases, the complete idle increase of factory adjusts the idle unit for accounting for institute's allocation proportion minimum, and target is so that each
Unit is idle to reach the ratio respectively distributed, and maintains busbar voltage to set-point；
Ii) when busbar voltage reduces, the complete idle reduction of factory adjusts the idle unit for accounting for institute's allocation proportion maximum, target be so that
Each unit is idle to reach the ratio respectively distributed, and maintains busbar voltage to set-point.
5. intelligent power plant's power auto-control system according to claim 2 based on Function Synthesis algorithm, feature
Be use it is similar adjustment Margin Method carry out Generation Control adjusting the step of for：
Work as qGen>0, index is qGen/fabs (qMax)；
I) when busbar voltage increases, the complete idle increase of factory adjusts the idle unit for accounting for idle upper limit absolute value minimum, and target is to make
It obtains each unit Reactive Power Margin to be equal or approximately equal, maintains busbar voltage to set-point；
Ii) when busbar voltage reduces, the complete idle reduction of factory adjusts the idle unit for accounting for idle upper limit maximum absolute value, and target is
So that each unit Reactive Power Margin is equal or approximately equal, busbar voltage is maintained to set-point.
6. intelligent power plant's power auto-control system according to claim 2 based on Function Synthesis algorithm, feature
Be use it is similar adjustment Margin Method carry out Generation Control adjusting the step of for：
Work as qGen<0, algorithm index is qGen/fabs (qMin)；
I) when busbar voltage increases, the complete idle increase of factory adjusts the idle unit for accounting for idle lower limit absolute value minimum, and target is to make
It obtains each unit Reactive Power Margin to be equal or approximately equal, maintains busbar voltage to set-point；
Ii) when busbar voltage reduces, the complete idle reduction of factory adjusts the idle unit for accounting for idle lower limit maximum absolute value, and target is
So that each unit Reactive Power Margin is equal or approximately equal, busbar voltage is maintained to set-point.
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