CN106100141A - Power station active power and reactive power automatic control system - Google Patents
Power station active power and reactive power automatic control system Download PDFInfo
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Abstract
The present invention provides a kind of power station active power and reactive power automatic control system, including: receive dispatching terminal order and processing module: receive and process remote control and the remote regulating control instruction of dispatching down distributing, and be transmitted to Master Control Unit centralized control module；Receive the feedback information of Master Control Unit centralized control module and information that preposition equipment data acquisition and control module is gathered simultaneously, upload scheduling after collecting, comprise remote measurement, remote signalling and control instruction return value；Preposition equipment data acquisition and control module: the information of the preposition controlled plant in collection power station, and the information of AGC/AVC control needs is transmitted to Master Control Unit centralized control module；Reception simultaneously processes remote control, the remote regulating control instruction that Master Control Unit centralized control module issues；Master Control Unit centralized control module: collect all information Machining Analysis, it is achieved AGC/AVC controls logic；The present invention has control strict logic, stable feature, it is ensured that the accuracy of control, stationarity.
Description
Technical field
The present invention mainly applies to power industry and the industrial control fields such as water power, thermoelectricity, solar energy, wind-powered electricity generation, specifically
A kind of automatic control system for power plant.
Background technology
Automation generation control (Automatic Generation Control) is in EMS EMS
Item critical function, exerting oneself of its real time control machine group, to meet the electricity needs that user is continually changing, and make system be in economy
Running status.
In power industry, AGC refers to Automatic Generation Control (Automatic Generation Control): automatically send out
Electric control (AGC, Automatic Generation Control), be generate electricity by way of merging two or more grid systems factory provide paid assistant service it
One, generating set is exerted oneself in adjusting range regulation, follows the tracks of the instruction that power scheduling mechanism of exchange issues, according to certain regulation
Speed adjusts generated output in real time, to meet power system frequency and the service of dominant eigenvalues control requirement.Automatic generation control
System (AGC) carries out secondary and adjusts with satisfied control target call grid parts unit output, and its basic function is: LOAD FREQUENCY
Controlling (LFC), economic dispatch control (EDC), spare capacity monitors (RM), AGC performance monitoring (AGC PM), interconnection deviation control
System (TBC) etc.；To reach its basic target: ensure generated output and balancing the load, it is ensured that system frequency is rated value, make clean
Region interconnection trend is equal with plan, Minimum Area operating cost.Existing more than 40 year of history is the most provincial in more than 20, China
Electrical network is applied, and at present, the electromotor in most power plants has put into Active Generation automatic control system (AGC), AGC system
Putting into operation on the premise of ensureing unit safety, reliability service of system, greatly increases the safe and reliable of operation of power networks
Property.
Automatism voltage control AVC(Automatic Voltage Control) it is to utilize computer and communication technology, to electricity
Idle resource and voltage adjusting device in net automatically control, to reach to ensure power grid security, high-quality and the mesh of economical operation
's.The function of AVC device is: (AVC) device realizes as the Control of Voltage of grading control in line voltage idle work optimization system
Means are that the rapid action of change in voltage caused for load fluctuation and contingent realizes electricity to control to adjust generator excitation
The Control of Voltage of factory side, ensures the voltage qualified to electrical network conveying and meets the idle of system requirements.Accept to examine oneself tune simultaneously
The superior voltage control command of degree communication center and voltage setting valve, calculate and export to control by voltage and reactive power optimization algorithm
Adjusting of automatic excitation adjustor of generator a little realizes remote dispatching control.
AVC Controlling principle: first ensure that power network safety operation ensures that voltage qualified reduction network loss is idle to power plant
Being adjusted, AVC substation uses following two big class control thoughts, and a kind of is the most idle by convert, is computed directly determining
The Target of Reactive Power of each unit carries out quickly directly regulation, another kind be use to total Target of Reactive Power between unit by certain principle
Distribution；Take into full account again busbar voltage and the difference of busbar voltage target simultaneously, unit is carried out the Intelligent adjustment control of variable step
System, the regulations speed that unit carries out increasing and decreasing magnetic is to be automatically adjusted really by the difference of busbar voltage target and current busbar voltage
Fixed.
Summary of the invention
It is an object of the invention to provide a kind of power station active power and reactive power automatic control system, it is achieved power station
AGC/AVC controls logic.The technical solution used in the present invention is:
A kind of power station active power and reactive power automatic control system, including: receive dispatching terminal order and processing module, front install
Standby data acquisition and control module, Master Control Unit centralized control module, human-computer interface module.
Receive dispatching terminal order and processing module: receive and process remote control and the remote regulating control instruction of dispatching down distributing, and turn
Issue Master Control Unit centralized control module；Receive feedback information and the preposition equipment data of Master Control Unit centralized control module simultaneously
The information that acquisition control module is gathered, uploads scheduling after collecting, comprise remote measurement, remote signalling and control instruction return value；
Preposition equipment data acquisition and control module: the information of the preposition controlled plant in collection power station, and AGC/AVC is controlled to need
The information wanted is transmitted to Master Control Unit centralized control module；It is distant that the process Master Control Unit centralized control module of reception simultaneously issues
Control, remote regulating control instruction；
Master Control Unit centralized control module: collect all information Machining Analysis, it is achieved AGC/AVC controls logic, control instruction
Issue and abnormality processing function；
Human-computer interface module: show that AGC/AVC controls information, and realize the consistency operation function that AGC/AVC controls.
It is an advantage of the current invention that: the AGC/AVC that present invention achieves power station automatically controls, there is control strict logic,
Stable feature, it is ensured that the accuracy of control, stationarity.Ensure that the precision of every control instruction, substantially increase
Control efficiency so that the real-time of control meets electricity needs.
Accompanying drawing explanation
Fig. 1 is the structure composition schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with concrete drawings and Examples, the invention will be further described.
The present invention provides a kind of power station active power and reactive power automatic control system, as it is shown in figure 1, include: receive
Dispatching terminal order and processing module, preposition equipment data acquisition and control module, Master Control Unit centralized control module, man machine interface mould
Block.Data interaction is had but independent operating, it is ensured that control the accuracy of technology, stability and high efficiency between each module.Each mould
Block can be arranged in different servers and operate above, and the concrete function that the following is modules divides and data interaction situation；
Receive dispatching terminal order and processing module: receive dispatching terminal order and processing module is connected with scheduling station, receive and locate
The remote control of reason dispatching down distributing and remote regulating control instruction, and it is transmitted to Master Control Unit centralized control module；Receive Master Control Unit simultaneously
The information that the feedback information of centralized control module and preposition equipment data acquisition and control module are gathered, uploads scheduling after collecting,
Comprise remote measurement, remote signalling and control instruction return value；
Preposition equipment data acquisition and control module: preposition equipment data acquisition and control module is preposition with each in power station controlled to be set
Standby connection, preposition controlled plant herein refers to each controlled electromotor in power station, can be photovoltaic power generation equipment or fire
Power generator, wind-driven generator etc.；Or reactive power compensator；Before preposition equipment data acquisition and control module gathers in power station
Put the information of controlled plant, and the information that AGC/AVC is controlled to need is transmitted to Master Control Unit centralized control module；Receive simultaneously
Process remote control, the control instruction such as remote regulating that Master Control Unit centralized control module issues；
Master Control Unit centralized control module: collect all information Machining Analysis, it is achieved AGC/AVC controls logic, control instruction
Issue and the function such as abnormality processing；
Human-computer interface module: friendly displaying AGC/AVC controls information, and realizes the consistency operation function that AGC/AVC controls；
(1) AGC control method；In this control method, preposition controlled plant refers to each controlled electromotor in power station；
AGC control method, the active-power P currently sampled with power station as foundation, this active-power P sampling period≤100ms；
In below scheme, P represents the active power currently sampled in power station, is specifically sampled in outgoing line cabinet protection device；MaxP
Represent dispatching down distributing and instruct (unit is kW) to the active power in power station；CP represents regulation dead band, and (active power controller is followed the tracks of dead
District, unit is kW)；ChangeP represents regulation step-length (unit is kW), and MaxSxP represents each preposition controlled plant volume in power station
Making power (unit is kW), MinSxP represents each preposition controlled plant minimum load (unit is kW)；
Herein, in power station, each preposition controlled plant nominal output MaxSxP is consistent, each preposition controlled plant minimum load
MinSxP is the most consistent；If it is to say, there are five electromotors in a power station, then the generating capacity of these five electromotors is one
Cause；
In view of the response speed of preposition controlled plant power adjustments, after all instructions of AGC system issue, preposition controlled plant
A period of time is needed to can be only achieved instruction effect, so all control instructions all can wait the R second after issuing in following scheme
(such as 10 seconds), but when MaxP changes, AGC system can cancel before all instructions, and rerun and issue new control
System instruction.Control instruction is handed down to the preposition controlled plant in power station by Master Control Unit centralized control module；
AGC puts into exit function: human-computer interface module can put into and exit AGC function, and AGC puts into, and automatically controls all preposition be subject to
Control equipment, AGC exits, all preposition controlled plant parameters of involution, and no longer automatically controls preposition controlled plant；
An AGC distant place/control logic mechanism on the spot: after power station AGC function puts into, as being in distant place control mode, power station AGC controls
The AGC regulating command that function real-time tracing scheduling station issues is controlled；As in control mode on the spot, power station AGC controls merit
Can be controlled according to instruction or Plan Curve on the spot；
AGC parameter facilities:
All control instructions wait the R second (preposition controlled plant receives instruction finishing time) after issuing, join in AGC program
Put in file configurable.
Regulation dead band CP(unit kW, active power controller follows the tracks of dead band), configurable in AGC program configuration file.
AGC regulation step-length ChangeP (unit is kW), configurable in AGC program configuration file.
AGC controls to be controlled by Master Control Unit centralized control module, and detailed process is as follows:
The active-power P currently sampled for power station, P is divided into several situations in step S102, S103, S104；
Step S101, AGC controls to start；
Step S102, as MaxP-CP≤P≤MaxP+CP, now represents that on power station, pushing electric network power meets scheduling controlling need
Ask；Power station generated output now reaches substantially to the scope of scheduling requirement, and Master Control Unit centralized control module is to preposition controlled plant
Do not do and control, if if now having the control instruction of preposition controlled plant to issue, terminating at once and remove；
Step S103, as P, < during MaxP-CP, representing that on power station, pushing electric network power is less than scheduling controlling lower limit, power station needs to increase
Generated output, it is impossible to less than dispatching of power netwoks lower limit MaxP-CP, it is determined that the difference between MaxP and P, if less than ChangeP, always
Control unit centralized control module does following control according to PSet=MaxP, otherwise does according to PSet=P+ChangeP and control as follows:
PSet is an intermediate variable；
A1, it is judged that power station outgoing line cabinet protection device communication state, if the chopper of power station outgoing line cabinet is in a point position, then issues control and closes
Instruction so that chopper closes position；This step can ensure that power station energy output power, and the control of the most all preposition controlled plants does not all have
Meaning；
B1, it is judged that all preposition controlled plant communication condition and whether putting into operation in power station, calculates preposition controlled plant communication
Normal number N, put into operation number RN；When N is equal to RN, perform step C1, when N is more than RN, perform step D1；
C1, calculates each preposition controlled plant and gains merit before setting value SetP=(PSet-P)/RN+SetPold, SetPold be RN
Put the meritorious setting value meansigma methods of controlled plant last time；
Then compare SetP and MaxSxP now, when SetP is more than MaxSxP, then MaxSxP is assigned to SetP(because of each
The generating capacity of preposition controlled plant maximum is exactly MaxSxP, and the setting beyond this value is the most nonsensical), otherwise SetP=
(PSet-P)/RN+SetPold；Master Control Unit centralized control module issues SetP to RN preposition controlled plant；Then R is waited
Second, return step S101；
D1, to communication, normally and the preposition controlled plant that do not puts into operation issues the instruction that puts into operation, then performs step C1；
Step S104, as P > MaxP+CP time, represent that pushing electric network power is more than the scheduling controlling upper limit on power station, power station needs to reduce
Generated output, it is impossible to exceed dispatching of power netwoks upper limit MaxP+CP, it is determined that the difference between P and MaxP, if less than ChangeP, always
Control unit centralized control module does following control according to PSet=MaxP, otherwise does according to PSet=P-ChangeP and control as follows:
A2, it is judged that all preposition controlled plant communication condition and whether putting into operation in power station, calculates preposition controlled plant communication
Normal number N, put into operation number RN, if RN is more than 0, performs step B2；
Alternatively, if RN is equal to 0, it is judged that outgoing line cabinet protection device communication state, if the chopper of power station outgoing line cabinet is in conjunction position,
Issue control split instruction so that chopper is in a point position；This mechanism can make when requiring that dispatching down distributing refers to the active power in power station
When making MaxP=0, power station can disengage electrical network；
B2, calculating each preposition controlled plant setting value SetP=SetPold-(P-PSet)/RN, SetPold that gain merit is RN
The meritorious setting value meansigma methods of preposition controlled plant last time,
SetP and MinSxP the most now, when SetP is less than MinSxP, is assigned to SetP by MinSxP, otherwise SetP=
SetPold-(P-PSet)/RN, Master Control Unit centralized control module issues SetP to RN preposition controlled plant；Then R is waited
Second, return step S101；
The active-power P that currently sampled in power station afterwards should be gradually reduced, but it can also happen that when MinSxP is assigned to
After SetP, the active-power P in power station is consistently greater than the situation of MaxP+CP, the most now needs the preposition controlled plant in power station
(electromotor) closes down one by one so that total active power of output P in power station declines；
C2, in previous step, if going back not met scheduling controlling demand when SetPold is equal to MinSxP, (P sampled is consistently greater than
MaxP+CP), Master Control Unit centralized control module issues instruction out of service one by one to preposition controlled plant so that preposition controlled
Equipment is closed down one by one, if SetP continues executing with step B2 more than MinSxP.
This step is meant that one by one, first in multiple preposition controlled plants is issued instruction out of service, warp
After crossing step A2 to C2, then judge P, if P is also greater than MaxP+CP, more next preposition controlled plant is issued exits fortune
Row instruction.
(2) AVC control method；In this control method, preposition controlled plant is the reactive power compensator in power station, idle
Compensation device supports constant voltage and the operational mode such as perseverance is idle；
AVC puts into exit function: human-computer interface module can put into and exit AVC function, and AVC puts into, and automatically controls all preposition be subject to
Control equipment, AVC exits, all preposition controlled plant parameters of involution, and no longer automatically controls preposition controlled plant.
AVC busbar voltage/idle control logic mechanism: after power station AVC function puts into, as being in busbar voltage controlling party
Formula, the AVC bus regulating command that power station AVC function real-time tracing scheduling station issues is controlled；As in idle control mode,
The AVC Reactive-power control instruction that power station AVC function real-time tracing scheduling station issues is controlled.
AVC controls to be controlled by Master Control Unit centralized control module；
AVC parameter facilities:
All control instructions wait the R second (preposition controlled plant receives instruction finishing time) after issuing, join in AVC program
Put in file configurable.
Voltage-regulation dead band SV(unit kV), configurable in AVC program configuration file.
Reactive-power control dead band SQ(unit kVar), configurable in AVC program configuration file.
Voltage-regulation step-length ChangeV (unit is kV), configurable in AVC program configuration file.
Reactive-power control step-length ChangeQ (unit is kVar), configurable in AVC program configuration file.
1, busbar voltage control mode；
Below scheme realizes AVC control, all with busbar voltage V in power station for according to (this busbar voltage sampling period is≤
100ms), controlling body is AGC/AVC system.
In below scheme, V represents the busbar voltage (unit is kV) in power station, PV represent dispatching down distributing voltage-target (
Unit is kV), SV represents voltage-regulation dead band (unit is kV)；ChangeV represents voltage-regulation step-length (unit is kV)；
The response speed regulated in view of preposition controlled device voltage, every the instruction of Master Control Unit centralized control module issues complete
After, preposition controlled plant needs a period of time to can be only achieved instruction effect, so distributing under every control instruction in following scheme
All can wait the R second (such as 10 seconds) after Biing, but when PV changes, Master Control Unit centralized control module can cancel before all
Instruction, and rerun and issue new control instruction.
For this " scheme ", V is divided into several situation of following steps S202, step S203:
Step S201, busbar voltage controls to start；
Step S202, as abs (PV-V)≤SV, represents that power station busbar voltage meets scheduling controlling demand；Master Control Unit is concentrated
Preposition controlled plant is not done and controls by control module；
Step S203, as abs (PV-V) > SV time, represent that power station busbar voltage is unsatisfactory for scheduling controlling demand, it is determined that PV and V it
Between the absolute value of difference, if more than ChangeV and PV more than V, Master Control Unit centralized control module is according to VSet=V+
ChangeV does following control, if more than ChangeV and PV less than V, Master Control Unit centralized control module is according to VSet=V-
ChangeV does following control, if less than or equal to ChangeV, Master Control Unit centralized control module does following control according to VSet=PV
System:
A3, it is determined that preposition controlled plant communication state, calculates the range of regulation that preposition controlled plant possesses at present: under voltage is adjustable
MinV is to adjustable upper limit MaxV of voltage for limit, and as MinV < VSet < MaxV, Master Control Unit centralized control module issues voltage-target
VSet instructs to preposition controlled plant, unlocks voltage simultaneously and lowers block signal, voltage rise block signal reporting scheduling；
As VSet≤MinV, perform step B3；As VSet >=MaxV, perform step C3；
B3, Master Control Unit centralized control module issues MinV and instructs to preposition controlled plant, generates voltage and lower block signal also
Reporting scheduling；
C3, Master Control Unit centralized control module issues MaxV and instructs to preposition controlled plant, generates voltage and raise block signal also
Reporting scheduling；
Step S204, waits the R second, returns step S201.
2, the idle control mode in power station；
Below scheme realizes AVC control, all with power station reactive power Q for according to (this is idle, and the Q sampling period is≤100ms), Q from
Outgoing line cabinet is sampled；Controlling body is AGC/AVC system.
In below scheme, Q represents power station reactive power (unit is kVar), and PQ represents the reactive power target of dispatching down distributing
Value (unit is kVar), SQ represents Reactive-power control dead band (unit is kVar)；ChangeQ represents Reactive-power control step-length (unit
For kVar)；
In view of the response speed of preposition controlled plant Reactive-power control, every the instruction of Master Control Unit centralized control module issues complete
After, preposition controlled plant needs a period of time to can be only achieved instruction effect, so distributing under every control instruction in following scheme
All can wait the R second (such as 10 seconds) after Biing, but when PQ changes, Master Control Unit centralized control module can cancel before all
Instruction, and rerun and issue new control instruction.
For this " scheme ", Q is divided into several situation of following steps S302, step S303:
Step S301, power station is idle, and control starts；
Step S302, during abs (PQ-Q)≤SQ, represents that power station reactive power meets scheduling controlling demand, and Master Control Unit concentrates control
Preposition controlled plant is not done and controls by molding block；
Step S303, during abs (PQ-Q) > SQ, represents that power station reactive power is unsatisfactory for scheduling controlling demand, it is determined that between PQ and Q
The absolute value of difference, if more than ChangeQ and PQ more than Q, Master Control Unit centralized control module is according to QSet=Q+
ChangeQ does following control, if more than ChangeQ and PQ less than Q, Master Control Unit centralized control module is according to QSet=Q-
ChangeQ does following control, if less than or equal to ChangeQ, Master Control Unit centralized control module does following control according to QSet=PQ
System:
A4, it is determined that preposition controlled plant communication state, calculates the tune reactive power scope that preposition controlled plant possesses at present: idle
Power adjustable lower limit MinQ is to adjustable upper limit MaxQ of reactive power, when MinQ < QSet < MaxQ, Master Control Unit centralized control module
Issue reactive power desired value QSet and instruct to preposition controlled plant, unlock reactive power simultaneously and lower block signal, idle merit
Rate raises block signal reporting scheduling；As QSet≤MinQ, perform step B4；As QSet >=MaxQ, perform step C4；
B4, Master Control Unit centralized control module issues MinQ and instructs to preposition controlled plant, generates reactive power and lowers locking letter
Number and reporting scheduling；
C4, Master Control Unit centralized control module issues MaxQ and instructs to preposition controlled plant, generates reactive power and raises locking letter
Number and reporting scheduling；
Step S304, waits the R second, returns step S301.
Claims (7)
1. a power station active power and reactive power automatic control system, it is characterised in that including:
Receive dispatching terminal order and processing module: receive and process remote control and the remote regulating control instruction of dispatching down distributing, and be transmitted to
Master Control Unit centralized control module；Receive feedback information and the preposition equipment data acquisition of Master Control Unit centralized control module simultaneously
The information that control module is gathered, uploads scheduling after collecting, comprise remote measurement, remote signalling and control instruction return value；
Preposition equipment data acquisition and control module: the information of the preposition controlled plant in collection power station, and AGC/AVC is controlled to need
The information wanted is transmitted to Master Control Unit centralized control module；It is distant that the process Master Control Unit centralized control module of reception simultaneously issues
Control, remote regulating control instruction；
Master Control Unit centralized control module: collect all information Machining Analysis, it is achieved AGC/AVC controls logic, control instruction
Issue and abnormality processing function；
Human-computer interface module: show that AGC/AVC controls information, and realize the consistency operation function that AGC/AVC controls.
2. power station active power as claimed in claim 1 and reactive power automatic control system, it is characterised in that described power station
Active power and reactive power automatic control system so that the AGC regulating command that power station tracking scheduling station issues, or according to
Instruction or Plan Curve on the spot, the AGC carrying out power station controls, specific as follows:
P represents the active power currently sampled in power station；MaxP represents dispatching down distributing and instructs to the active power in power station；CP represents
Regulation dead band；ChangeP represents regulation step-length, and MaxSxP represents each preposition controlled plant nominal output, MinSxP generation in power station
The each preposition controlled plant minimum load of table；
The active-power P currently sampled in power station,
Step S101, AGC controls to start；
Step S102, as MaxP-CP≤P≤MaxP+CP, preposition controlled plant is not controlled by Master Control Unit centralized control module
System；
Step S103, as P, < during MaxP-CP, it is determined that the difference between MaxP and P, if less than ChangeP, Master Control Unit is concentrated
Control module does following control according to PSet=MaxP, otherwise being following control: PSet according to PSet=P+ChangeP is in the middle of individual
Variable；
A1, it is judged that power station outgoing line cabinet protection device communication state, if the chopper of power station outgoing line cabinet is in a point position, then issues control and closes
Instruction so that chopper closes position；
B1, it is judged that all preposition controlled plant communication condition and whether putting into operation in power station, calculates preposition controlled plant communication
Normal number N, put into operation number RN；When N is equal to RN, perform step C1, when N is more than RN, perform step D1；
C1, calculates each preposition controlled plant and gains merit before setting value SetP=(PSet-P)/RN+SetPold, SetPold be RN
Put the meritorious setting value meansigma methods of controlled plant last time；
Then compare SetP and MaxSxP now, when SetP is more than MaxSxP, then MaxSxP is assigned to SetP, otherwise SetP
=(PSet-P)/RN+SetPold；Master Control Unit centralized control module issues SetP to RN preposition controlled plant；Then R is waited
Second, return step S101；
D1, to communication, normally and the preposition controlled plant that do not puts into operation issues the instruction that puts into operation, then performs step C1；
Step S104, as P > MaxP+CP time, it is determined that the difference between P and MaxP, if less than ChangeP, Master Control Unit is concentrated
Control module does following control according to PSet=MaxP, otherwise does according to PSet=P-ChangeP and control as follows:
A2, it is judged that all preposition controlled plant communication condition and whether putting into operation in power station, calculates preposition controlled plant communication
Normal number N, put into operation number RN, if RN is more than 0, performs step B2；
B2, calculates each preposition controlled plant and gains merit before setting value SetP=SetPold-(P-PSet)/RN, SetPold be RN
Put the meritorious setting value meansigma methods of controlled plant last time,
SetP and MinSxP the most now, when SetP is less than MinSxP, is assigned to SetP by MinSxP, otherwise SetP=
SetPold-(P-PSet)/RN, Master Control Unit centralized control module issues SetP to RN preposition controlled plant；Then R is waited
Second, return step S101；
C2, if SetPold is equal to during MinSxP go back not met scheduling controlling demand in previous step, the P i.e. sampled is consistently greater than
MaxP+CP, Master Control Unit centralized control module issues instruction out of service one by one to preposition controlled plant so that preposition controlled set
For closing down one by one, if SetP continues executing with step B2 more than MinSxP.
3. power station active power as claimed in claim 2 and reactive power automatic control system, it is characterised in that
In step A2, if RN is equal to 0, it is judged that outgoing line cabinet protection device communication state, if the chopper of power station outgoing line cabinet is in conjunction
Position, issues control split instruction so that chopper is in a point position.
4. power station active power as claimed in claim 2 and reactive power automatic control system, it is characterised in that
Human-computer interface module can put into and exit AGC function, and AGC puts into, and automatically controls all preposition controlled plants, and AGC exits,
The all preposition controlled plant parameters of involution, and no longer automatically control preposition controlled plant.
5. power station active power as claimed in claim 1 and reactive power automatic control system, it is characterised in that described power station
Active power and reactive power automatic control system so that the AVC varying DC link voltage instruction that scheduling station issues is followed the trail of in power station,
The busbar voltage carrying out power station controls, and specifically includes:
V represents the busbar voltage in power station, and PV represents the voltage-target of dispatching down distributing, and SV represents voltage-regulation dead band,
ChangeV represents voltage-regulation step-length；
For busbar voltage V of current plant,
Step S201, busbar voltage controls to start；
Step S202, as abs (PV-V)≤SV, represents that power station busbar voltage meets scheduling controlling demand；Master Control Unit is concentrated
Preposition controlled plant is not done and controls by control module；
Step S203, as abs (PV-V) > SV time, represent that power station busbar voltage is unsatisfactory for scheduling controlling demand, it is determined that PV and V it
Between the absolute value of difference, if more than ChangeV and PV more than V, Master Control Unit centralized control module is according to VSet=V+
ChangeV does following control, if more than ChangeV and PV less than V, Master Control Unit centralized control module is according to VSet=V-
ChangeV does following control, if less than or equal to ChangeV, Master Control Unit centralized control module does following control according to VSet=PV
System:
A3, it is determined that preposition controlled plant communication state, calculates the range of regulation that preposition controlled plant possesses at present: under voltage is adjustable
MinV is to adjustable upper limit MaxV of voltage for limit, and as MinV < VSet < MaxV, Master Control Unit centralized control module issues voltage-target
VSet instructs to preposition controlled plant, unlocks voltage simultaneously and lowers block signal, voltage rise block signal reporting scheduling；
As VSet≤MinV, perform step B3；As VSet >=MaxV, perform step C3；
B3, Master Control Unit centralized control module issues MinV and instructs to preposition controlled plant, generates voltage and lower block signal also
Reporting scheduling；
C3, Master Control Unit centralized control module issues MaxV and instructs to preposition controlled plant, generates voltage and raise block signal also
Reporting scheduling；
Step S204, waits the R second, returns step S201.
6. power station active power as claimed in claim 1 and reactive power automatic control system, it is characterised in that described power station
Active power and reactive power automatic control system so that the AVC Reactive-power control instruction that scheduling station issues is followed the trail of in power station, carries out
Control that power station is idle, specifically includes:
Q represents power station reactive power, and PQ represents the reactive power desired value of dispatching down distributing, and SQ represents Reactive-power control dead band；
ChangeQ represents Reactive-power control step-length；
For current plant reactive power Q,
Step S301, power station is idle, and control starts；
Step S302, during abs (PQ-Q)≤SQ, represents that power station reactive power meets scheduling controlling demand, and Master Control Unit concentrates control
Preposition controlled plant is not done and controls by molding block；
Step S303, during abs (PQ-Q) > SQ, represents that power station reactive power is unsatisfactory for scheduling controlling demand, it is determined that between PQ and Q
The absolute value of difference, if more than ChangeQ and PQ more than Q, Master Control Unit centralized control module is according to QSet=Q+
ChangeQ does following control, if more than ChangeQ and PQ less than Q, Master Control Unit centralized control module is according to QSet=Q-
ChangeQ does following control, if less than or equal to ChangeQ, Master Control Unit centralized control module does following control according to QSet=PQ
System:
A4, it is determined that preposition controlled plant communication state, calculates the tune reactive power scope that preposition controlled plant possesses at present: idle
Power adjustable lower limit MinQ is to adjustable upper limit MaxQ of reactive power, when MinQ < QSet < MaxQ, Master Control Unit centralized control module
Issue reactive power desired value QSet and instruct to preposition controlled plant, unlock reactive power simultaneously and lower block signal, idle merit
Rate raises block signal reporting scheduling；As QSet≤MinQ, perform step B4；As QSet >=MaxQ, perform step C4；
B4, Master Control Unit centralized control module issues MinQ and instructs to preposition controlled plant, generates reactive power and lowers locking letter
Number and reporting scheduling；
C4, Master Control Unit centralized control module issues MaxQ and instructs to preposition controlled plant, generates reactive power and raises locking letter
Number and reporting scheduling；
Step S304, waits the R second, returns step S301.
7. the power station active power as described in claim 5 or 6 and reactive power automatic control system, it is characterised in that
Human-computer interface module can put into and exit AVC function, and AVC puts into, and automatically controls all preposition controlled plants, and AVC exits,
The all preposition controlled plant parameters of involution, and no longer automatically control preposition controlled plant；Human-computer interface module allows hand over bus
Voltage-regulation and Reactive-power control pattern.
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Denomination of invention: Automatic control system for active and reactive power in power plants Granted publication date: 20190322 Pledgee: Bank of China Limited Wuxi Taihu Xincheng sub branch Pledgor: WUXI WONTEX-POWER Corp. Registration number: Y2024980007971 |