CN105356475B - A kind of AGC based on same time scale and AVC control method for coordinating - Google Patents
A kind of AGC based on same time scale and AVC control method for coordinating Download PDFInfo
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Abstract
The present invention relates to a kind of AGC based on same time scale and AVC control method for coordinating, the described method comprises the following steps：Establish multilayer AGC and AVC coordinated control systems；Realize the economical operation of power grid；Real time correction controls the active reactive of power grid.This method for AGC and AVC independent controls influence each other control effect the problem of, the mechanism of both reciprocal effects of research, analysis is suitable for the time scale that AGC and AVC coordinates control, it is proposed a kind of based on same time scale, meter and the AGC and AVC of active and idle reciprocal effect mechanism coordinate Controlling model, improve conventional control method, realize the coordination optimization control of AGC and AVC, the adjustable resource and control freedom degree of system are made full use of, improves the security, economy and power quality of operation of power networks to greatest extent.
Description
Technical field：
The present invention relates to be more particularly to a kind of AGC based on same time scale and AVC control method for coordinating.
Background technology：
In the crossing domain of operation of power networks control and nonlinear programming problem, Automatic Generation Control (AGC) is responsible for active
The control of frequency, by the active power of generating set in control area, makes the change of one's respective area unit generation power tracking load
Change, generated output is adjusted in real time according to certain regulations speed, to meet the Real-time Balancing of power supply and demand, realize and maintain system frequency
And the deviation of rated value is in allowed limits, and maintenance external contact line exchanges power and the deviation of planned value and is allowing only
In the range of purpose.AGC generally exchanges power deviation and frequency bias control mode (TBC) only using interconnection.This control
The advantages of mode processed is：Each control area is voluntarily balanced according to the adjustment power plant in its area control error (ACE) control area
Its load fluctuation.For static state, other regions are not involved substantially；For dynamic, and adjacent area electric system can be supported.
Automatism voltage control (AVC) is responsible for the control of reactive voltage, the power grid real time execution number gathered by control system
According to, on the premise of power network safety operation is ensured, to generator reactive, on-load transformer tap changer (OLTC), can
The reactive voltage equipment such as switching reactive compensator, Static Var Compensator (SVC) carry out on-line optimization closed-loop control, realize nothing
Work(hierarchical and regional balance, improves grid voltage quality, reduces network loss.At present, AVC control systems are broadly divided into tertiary voltage control
Two kinds of control modes are controlled with two step voltages, are controlled by the coordination between different levels, ensure the safety and stability of power grid, are improved
The economical and energy saving of operation of power networks.
Existing power grid automatic control mode, is carried out AGC and AVC as 2 completely self-contained closed-loop control systems
Independent control, but can influence each other between AGC and the control instruction of AVC, Con trolling index may be brought to decline, adjust repeatedly
Section control device etc. is unfavorable for the consequence of security of system and robustness.Meanwhile as intelligent grid integrates various smart machines
With the development trend of control system, the automatic synchronization control of AGC and AVC also become the control technology for being badly in need of development.
The content of the invention：
The object of the present invention is to provide a kind of AGC based on same time scale and AVC control method for coordinating, this method changes
Into conventional control method, the coordination optimization control of AGC and AVC is realized, make full use of the adjustable resource of system and control certainly
By spending, the security, economy and power quality of operation of power networks are improved to greatest extent.
To achieve the above object, the present invention uses following technical scheme：AGC and AVC based on same time scale coordinates
Control method, the described method comprises the following steps：
(1) multilayer AGC and AVC coordinated control systems are established；
(2) economical operation of power grid is realized；
(3) active reactive of real time correction control power grid.
A kind of AGC based on same time scale provided by the invention and AVC control method for coordinating, its described step (1)
Multilayer AGC and AVC coordinated control systems pass through Multiple Time Scales multi-layer AGC and AVC coordination Controlling model overall frame
What frame determined is applicable in the time scale foundation that AGC and AVC coordinates control.
A kind of AGC based on same time scale provided by the invention and AVC control method for coordinating, the general frame bag
Include minute level and second level；The minute level realizes the coordination optimization control of AGC and AVC, exports active and reactive benchmark
Power instruction；The second level realizes that AGC and AVC coordinates Corrective control, exports active and reactive power adjustment instruction.
Another preferable a kind of AGC based on same time scale provided by the invention and AVC control method for coordinating, according to
The load level of the general frame combination actual electric network institute band, the pondage of active adjustment equipment and response speed and idle
The pondage and response speed of adjustment equipment, select the time scale for being adapted to AGC and AVC to coordinate control, as the minute
The controlling cycle of level and second level；
The input/output variable of two levels is determined respectively, is established the information channel between two levels, is determined each level
The control task undertaken, ultimately forms AGC and the AVC coordinated control system of multilayer.
Another preferable a kind of AGC based on same time scale provided by the invention and AVC control method for coordinating, it is described
Step (2) coordinates and optimizes the mathematical model of control by establishing the AGC and AVC of the minute level, calculates active and idle
Reference power be output to the second level, while be handed down to active adjustment equipment and Reactive-power control equipment, realize the warp of power grid
Ji operation.
Another preferable a kind of AGC based on same time scale provided by the invention and AVC control method for coordinating, it is described
The mathematical model of optimal control is using loss minimization as target, using node power equation as equality constraint, with generated power
Output bound, idle output bound, node voltage bound, Branch Power Flow bound and dominant eigenvalues bound conduct
The nonlinear programming mathematics model of inequality constraints, its expression formula are as follows：
Wherein, f1Represent system losses, SG, N, L represent the set of all generators, node and circuit in power grid, i respectivelyT
Represent the nodal scheme being connected with interconnection；PG,i、QG,i、PD,i、QD,i、Vi、Vj、θij、Gij、Bij、Pij、PTPower generation is represented respectively
Active and idle, load the active and idle, node i of machine and the voltage magnitude and phase angle difference of node j, bus admittance matrix
Real and imaginary parts, Branch Power Flow and dominant eigenvalues.、PTActive and idle, load the active and nothing of generator is represented respectively
Work(, each node voltage amplitude, Branch Power Flow and dominant eigenvalues.
Another preferable a kind of AGC based on same time scale provided by the invention and AVC control method for coordinating, it is affiliated
Step (3) calculates active and idle regulated quantity size, and will adjust according to the second level AGC and AVC coordination control strategies
Section instruction is handed down to active and reactive adjustment equipment, realizes the idle real time correction control of electric network active.
Another preferable a kind of AGC based on same time scale provided by the invention and AVC control method for coordinating, it is described
The process that controls of control strategy is:
(3-1) analyzes the unqualified reasons of ACE, and AGC actions are selected according to different situations；
(3-2) sorts according to critical circuits heavy duty problem and level of sensitivity, distributes AGC active power outputs；
(3-3) calculates AVC auxiliary adjustment amounts for leftover problem after AGC actions according to different situations.
Another preferable a kind of AGC based on same time scale provided by the invention and AVC control method for coordinating, it is described
Step (3-1) is by calculating ACE, to judge whether AGC units act；The ACE is determined by following formula：
ACE=10B Δ f+ Δs PT
Wherein, Δ f and Δ PTFrequency departure and dominant eigenvalues deviation are represented respectively, and B represents the frequency characteristic system of power grid
Number；
The AGC units include AGC_F units and AGC_PT units are respectively intended to the frequency present in elimination system
Deviation delta f and dominant eigenvalues deviation delta PT；
When ACE is unsatisfactory for requiring, the active adjusting total amount of the AGC units is determined, and by analyzing unqualified reason,
According to following strategy, corresponding AGC units are selected to complete adjusting task：
When only Δ f is unqualified, the AGC_F units are only selected to act, the AGC_PT units are supported as standby；
As only Δ PTWhen unqualified, the AGC_PT units are only selected to act, the AGC_F units are supported as standby；
As Δ f and Δ PTWhen unqualified, the AGC_PT units and the AGC_F units act at the same time.
Another preferable a kind of AGC based on same time scale provided by the invention and AVC control method for coordinating, it is described
Step (3-2) is according to critical circuits power PijP active to AGC unitsG,iLevel of sensitivity, so that it is determined that each AGC units go out
Power is distributed；The sensitivity is determined by following formula：
Wherein, Vi、Vj、θi、θjThe voltage magnitude and phase angle at circuit both ends are represented respectively, and node i flows to node j's
Power is just；
According to following strategy, the output distribution of each AGC units is determined：
When AGC units integrally increase output, the minus AGC units of prioritizing selection sensitivity, overabsorption is contributed；
When AGC units integrally reduce output, prioritizing selection sensitivity is more than zero AGC units, and overabsorption is contributed；
When AGC units integrally do not change output, each AGC units do not distribute power.
Another preferable a kind of AGC based on same time scale provided by the invention and AVC control method for coordinating, it is described
After step (3-3) is by determining each AGC unit outputs distribution, brings active regulated quantity into power flow equation and verified, judged
Hub node voltage VP, interconnection node voltage VTWith critical circuits power PijIt is whether out-of-limit；According to different out-of-limit situations, with
Level of sensitivity is foundation, selects different AVC equipment to carry out auxiliary adjustment, determines the regulated quantity of each AVC equipment；
The auxiliary adjustment strategy of the AVC equipment is as follows：
If the hub node voltage VPGeneration is out-of-limit, and be full footAVC
Equipment participates in adjusting；
If the interconnection node voltage VTGeneration is out-of-limit, and be full foot's
AVC equipment participates in adjusting；
If the critical circuits power PijGeneration is out-of-limit, and be full footAVC
Equipment participates in adjusting；
Wherein, Q is AVC equipment Reactive-power control amounts；
If VP、VTAnd PijHave that two or three variables are out-of-limit at the same time among three, then more than strategy by different variables
The problem of out-of-limit, is decoupled, and is adjusted using different AVC equipment, the influence between reducing.
With immediate prior art ratio, the present invention, which provides technical solution, has following excellent effect
1st, the present invention is that AGC and AVC join together in minute level to establish unified optimizing control models, while will connection
Winding thread power introduces optimizing control models as control variable., can either be fast and effeciently compared with traditional network optimization method
To system frequency (f), dominant eigenvalues (PT), hub node voltage (VP), interconnection node voltage (VT) etc. variable controlled
System；
2nd, the present invention realize active and idle global optimization, as far as possible ensure power grid by it is most economical it is safe in a manner of transport
OK；
3rd, the present invention can be effectively reduced the adverse effect between AGC and AVC, solve repeatedly what regulator generator was contributed
Problem；
4th, the present invention, can be with using the control strategy of AGC and AVC mutual cooperations when solving the problems, such as critical circuits heavy duty
Realizing that, reasonably using resource, the action for reducing equipment is secondary while reducing line transmission power, raising system stability
Number；
5th, present invention improves over conventional control method, realize the coordination optimization control of AGC and AVC, make full use of system
Adjustable resource and control freedom degree, improve the security, economy and power quality of operation of power networks to greatest extent.
Brief description of the drawings
The AGC and AVC based on same time scale that Fig. 1 is the present invention coordinates control flow chart；
Fig. 2 is that the Multiple Time Scales multi-layer AGC and AVC of the present invention coordinate the general frame figure of Controlling model；
Fig. 3 is that the second level AGC and AVC of the present invention coordinate the flow chart schematic diagram of Corrective control strategy；
10 machine, the 39 node connection diagram that Fig. 4 is the present invention is intended to.
Embodiment
With reference to embodiment, the invention will be described in further detail.
Embodiment 1：
As shown in Figs 1-4, the method for the invention of this example comprises the following steps：
Step 1：The multi-layer AGC and AVC of the Multiple Time Scales provided according to the present invention coordinate the overall frame of Controlling model
Frame, determines to be applicable in the time scale that AGC and AVC coordinates control, establishes multilayer AGC and AVC coordinated control systems.
General frame provided by the present invention includes two levels, as shown in Fig. 2, being respectively：Minute level, realizes AGC
Controlled with the coordination optimization of AVC, export active and reactive reference power instruction；Second level, realizes that AGC and AVC coordinates correction control
System, exports active and reactive power adjustment instruction.
The general frame provided according to the present invention, with reference to the load level of actual electric network institute band, active and reactive adjustment equipment
Pondage and response speed, the time scale for being adapted to AGC and AVC to coordinate control is selected, as minute level and second level
Controlling cycle.Meanwhile the input/output variable of two levels is determined respectively, the information established between two levels is led to
Road, specifies the control task that each level is undertaken, and ultimately forms AGC and the AVC coordinated control system of multilayer.
Step 2：Under the Controlling model general frame described in step 1, assisted using the AGC and AVC of the minute level of foundation
The mathematical model of optimal control is adjusted, active and idle reference power is calculated and is output to a second level, while be handed down to active, nothing
Work(adjustment equipment, realizes the economical operation of power grid.
In each controlling cycle of minute level, first, measured in real time using SCADA system, by what is collected
Load value is brought into the optimizing control models of foundation as input variable.Then, solved using primal dual interior point method,
Calculate the active power output P of each generatorG,iWith idle output QG,i.Finally, passed to result of calculation as power reference value
Second level, and active and Reactive-power control equipment is handed down to as instruction, carry out real time correction control.
The mathematical model of the optimal control, be one using loss minimization as target, equation is used as using node power equation
Constraint, with generated power output bound, idle output bound, node voltage bound, Branch Power Flow bound, contact
Nonlinear programming mathematics model of the linear heat generation rate bound as inequality constraints.
Dominant eigenvalues are required as close possible to planned value in view of operation of power networks, therefore by dominant eigenvalues equivalence into one
Platform generating set, is incorporated among optimizing control models as state variable.Assuming that dominant eigenvalues outflow control area is just,
Then the formula of dominant eigenvalues equivalence into generator is as follows：
P′G,i=PG,i-PTI=iT
Wherein, iTRepresent the nodal scheme being connected with interconnection, PTRepresent dominant eigenvalues, PG,iWith P 'G,iRepresent respectively
Before equivalent and equivalent posterior nodal point connects the active power of generator output.
Accordingly, it is considered to the expression formula of the AGC and AVC coordination optimization Controlling models of dominant eigenvalues control is as follows：
Wherein, f1Represent system losses, SG, N, L represent the set of all generators, node and circuit in power grid, i respectivelyT
Represent the nodal scheme being connected with interconnection；PG,i、QG,i、PD,i、QD,i、Vi、Vj、θij、Gij、Bij、Pij、PTPower generation is represented respectively
Active and idle, load the active and idle, node i of machine and the voltage magnitude and phase angle difference of node j, bus admittance matrix
Real and imaginary parts, Branch Power Flow and dominant eigenvalues.、PTActive and idle, load the active and nothing of generator is represented respectively
Work(, each node voltage amplitude, Branch Power Flow and dominant eigenvalues.
Step 3：Under the Controlling model general frame described in step 1, according to second level AGC and AVC coordination control strategies,
Active and idle regulated quantity size is calculated, and regulating command is handed down to active and reactive adjustment equipment, realizes electric network active
Idle real time correction control.
The second level AGC and AVC coordinates the overall flow of Corrective control strategy, as shown in figure 3, mainly point three portions
Point, detailed process is as follows：
(1) the unqualified reasons of ACE are analyzed, AGC actions are selected according to different situations.
In actual electric network operation, AGC generally uses dominant eigenvalues deviation control mode and frequency bias control mode
(TBC).Error (ACE) is controlled by zoning, to judge whether AGC units act.The calculation formula of ACE is as follows：
ACE=10B Δ f+ Δs PT
Wherein, Δ f and Δ PTFrequency departure and dominant eigenvalues deviation are represented respectively, and B represents the frequency characteristic system of power grid
Number.
AGC units are divided into two classes by the present invention according to nearby principle：AGC_F units and AGC_PT units, are respectively intended to disappear
Except the frequency deviation f present in system and dominant eigenvalues deviation delta PT.Therefore, when ACE is unsatisfactory for requiring, calculate
The active adjusting total amount of AGC units, and by analyzing unqualified reason, according to following strategy, select corresponding AGC units to complete to adjust
Section task：
When only Δ f is unqualified, the action of AGC_F units is only selected, AGC_PT units are supported as standby；
Only Δ PTWhen unqualified, the action of AGC_PT units is only selected, AGC_F units are supported as standby；
As Δ f and Δ PTWhen unqualified, AGC_PT units and AGC_F units act at the same time.
(2) consider critical circuits heavy duty problem, sorted according to level of sensitivity, distribute AGC active power outputs.
On the basis of which clear and definite AGC unit participates in adjusting and adjusts total amount, each AGC units for participating in adjusting are calculated
Output distribution.Be likely to occur case of heavy load in view of some critical circuits in power grid inside, carry out AGC unit adjustings when
Wait, it should follow the principle of " improve, few to deteriorate " more, formulate the allocation strategy of AGC units.
The present invention is according to critical circuits power (Pij) (P active to AGC unitsG,i) level of sensitivity, calculate each AGC machines
The output distribution of group, sensitivity specific formula for calculation are as follows：
Wherein Vi、Vj、θi、θjThe voltage magnitude and phase angle at circuit both ends are represented respectively, and node i flows to the work(of node j
Rate is just.
On the basis of meter sensitivity, according to following strategy, the output distribution of each AGC units is calculated：
When AGC units integrally increase output, the minus AGC units of prioritizing selection sensitivity, overabsorption is contributed；
When AGC units integrally reduce output, prioritizing selection sensitivity is more than zero AGC units, and overabsorption is contributed；
When AGC units integrally do not change output, each AGC units do not distribute power；
(3) for leftover problem after AGC actions, AVC auxiliary adjustment amounts are calculated according to different situations.
After calculating each AGC unit outputs distribution, bring active regulated quantity into power flow equation and verified, judge maincenter
Node voltage (VP), interconnection node voltage (VT), critical circuits power (Pij) etc. variable it is whether out-of-limit.Due to each key variables
Different out-of-limit situations may be combined into, according to the difference of out-of-limit situation, using level of sensitivity as foundation, selects different AVC
Equipment carries out auxiliary adjustment, calculates the regulated quantity of each AVC equipment.AVC auxiliary adjustments strategy provided by the present invention is specific as follows：
If the hub node voltage VPGeneration is out-of-limit, choosingAVC equipment
Participate in adjusting；
If the interconnection node voltage VTGeneration is out-of-limit, choosingAVC equipment
Participate in adjusting；
If the critical circuits power P ijGeneration is out-of-limit, choosingAVC equipment
Participate in adjusting；
Wherein, Q is AVC equipment Reactive-power control amounts；
If VP、VT、PijHave among three two or three variables at the same time it is out-of-limit, then according to more than strategy as far as possible by difference
The problem of variable is out-of-limit is decoupled, and is adjusted using different AVC equipment, the influence between reducing.
By the calculating of three above part, the regulated quantity of each AGC and AVC are obtained, power flow equation is brought into and is verified.
After meeting the requirements, while each active and reactive adjustment equipment is handed down to as regulating command, carries out real time correction control.
Summary implementation steps, are controlled, it is possible to achieve right using the coordination of minute level and the AGC and AVC of second level
System frequency (f), dominant eigenvalues (PT), hub node voltage (VP), interconnection node voltage (VT) etc. variable effective control
System, ensure power grid can safety and stability, cost-effectively run.
It is illustrated using 10 machine of IEEE New England, 39 node system, specific wiring diagram is as shown in Figure 4.Minute layer
For level with 5 minutes cycles in order to control, second level established multilayer AGC and AVC coordinated control systems with 5 seconds cycles in order to control.
In minute level, a certain controlling cycle, the load level of each node of system is as shown in table 1, and the institute of node 20 band is negative
Lotus is interconnection, and dominant eigenvalues planned value is 650MW.It is generating set by dominant eigenvalues equivalence, brings optimal control mould into
In type, the active and reactive output of each generating set calculated is as shown in table 2.Network loss is 47.32MW, and dominant eigenvalues are
653.2MW。
Table 1
| Node number | It is active | It is idle | Node number | It is active | It is idle |
| 1 | 97.6 | 44.2 | 21 | 450 | 115 |
| 3 | 322 | 2.4 | 23 | 71.5 | 84.6 |
| 4 | 500 | 184 | 24 | 308.6 | -92.2 |
| 7 | 233.8 | 84 | 25 | 224 | 47.2 |
| 8 | 522 | 176.6 | 26 | 139 | 17 |
| 9 | 6.5 | -66.6 | 27 | 281 | 75.5 |
| 12 | 8.53 | 88 | 28 | 206 | 27.6 |
| 15 | 320 | 153 | 29 | 283.5 | 26.9 |
| 16 | 329 | 32.3 | 31 | 9.2 | 4.6 |
| 18 | 158 | 30 |
Table 2
Table 3
In second level, a certain controlling cycle, system frequency deviation (Δ f) and dominant eigenvalues deviation (Δ PT) be respectively
0.15HZ and 50MW, calculates to obtain ACE=100MW, is unsatisfactory for requiring, and Δ f and Δ PTIt is excessive.Therefore selection AGC_F machines
Group and AGC_PT units reduce output at the same time.The trend of critical circuits 22-21 is 699.42MW in system at this time, close to the steady pole of heat
Limit (700WM).No. 34 of selection sensitivity more than zero and No. 35 AGC units are adjusted, the specific output situation of change such as institute of table 3
Show.By Load flow calculation, hub node voltage (VP), interconnection node voltage (VT), critical circuits power (Pij) become
Change, specific situation of change is as shown in table 4.Wherein circuit 22-21 trends are reduced to 667.48WM, meet stability requirement, and node
19 voltages are changed into 1.051, more than upper voltage limit, it is therefore desirable to start AVC auxiliary adjustments.Selection meetsAVC equipment be adjusted, specific regulated quantity is as shown in table 3.Through Load flow calculation,
It was found that 19 voltage of node is changed into 1.05, and other node voltages are satisfied by requiring, and concrete condition is as shown in table 4.Finally will meter
Calculate the AGC obtained and be handed down to active and reactive adjustment equipment with AVC regulated quantitys, it is ensured that the stable operation of system, has also said this hair
The validity of AGC and the AVC control method for coordinating of bright offer.
Table 4
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute
The those of ordinary skill in category field with reference to above-described embodiment although should be understood：Still can be to the embodiment of the present invention
Technical scheme is modified or replaced equivalently, these are without departing from any modification of spirit and scope of the invention or equivalent substitution, in Shen
Within claims of the invention that please be pending.
Claims (9)
1. a kind of AGC based on same time scale and AVC control method for coordinating, it is characterised in that：The described method includes following
Step：
(1) multilayer AGC and AVC coordinated control systems are established；
(2) economical operation of power grid is realized；
(3) active reactive of real time correction control power grid；
The multilayer AGC of the step (1) coordinates to control with AVC coordinated control systems by the multi-layer AGC and AVC of Multiple Time Scales
What the general frame of simulation determined is applicable in the time scale foundation that AGC and AVC coordinates control；
The general frame includes minute level and second level；The minute level realizes the coordination optimization control of AGC and AVC,
Export active and reactive reference power instruction；The second level realizes that AGC and AVC coordinates Corrective control, and output is active and reactive
Power adjustment instruction.
2. a kind of AGC based on same time scale as claimed in claim 1 and AVC control method for coordinating, it is characterised in that：
According to the load level of the general frame combination actual electric network institute band, the pondage of active adjustment equipment and response speed and
The pondage and response speed of Reactive-power control equipment, select the time scale for being adapted to AGC and AVC to coordinate control, as described
The controlling cycle of minute level and second level；
The input/output variable of two levels is determined respectively, is established the information channel between two levels, is determined that each level is held
The control task of load, ultimately forms AGC and the AVC coordinated control system of multilayer.
3. a kind of AGC based on same time scale as claimed in claim 1 and AVC control method for coordinating, it is characterised in that：
The step (2) by establish the minute level AGC and AVC coordinate and optimize control mathematical model, calculate it is active and
Idle reference power is output to the second level, while is handed down to active adjustment equipment and Reactive-power control equipment, realizes power grid
Economical operation.
4. a kind of AGC based on same time scale as claimed in claim 3 and AVC control method for coordinating, it is characterised in that：
The mathematical model of the optimal control is using loss minimization as target, using node power equation as equality constraint, with generator
Active power output bound, idle output bound, node voltage bound, Branch Power Flow bound and dominant eigenvalues bound
It is as follows as the nonlinear programming mathematics model of inequality constraints, its expression formula：
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Wherein, f1Represent system losses, SG, N, L represent the set of all generators, node and circuit in power grid, i respectivelyTRepresent
The nodal scheme being connected with interconnection；PG,i、QG,i、PD,i、QD,i、Vi、Vj、θij、Gij、Bij、Pij、PTGenerator is represented respectively
The voltage magnitude and phase angle difference of active and idle, load active and idle, node i and node j, the real part of bus admittance matrix
With imaginary part, Branch Power Flow and dominant eigenvalues.
5. a kind of AGC based on same time scale as claimed in claim 1 and AVC control method for coordinating, it is characterised in that：
Affiliated step (3) calculates active and idle regulated quantity size according to the second level AGC and AVC coordination control strategies, and
Regulating command is handed down to active and reactive adjustment equipment, realizes the idle real time correction control of electric network active.
6. a kind of AGC based on same time scale as claimed in claim 5 and AVC control method for coordinating, it is characterised in that：
The process that controls of the control strategy is:
(3-1) analyzes the unqualified reasons of ACE, and AGC actions are selected according to different situations；
(3-2) sorts according to critical circuits heavy duty problem and level of sensitivity, distributes AGC active power outputs；
(3-3) calculates AVC auxiliary adjustment amounts for leftover problem after AGC actions according to different situations.
7. a kind of AGC based on same time scale as claimed in claim 6 and AVC control method for coordinating, it is characterised in that：
The step (3-1) is by calculating ACE, to judge whether AGC units act；The ACE is determined by following formula：
ACE=10B Δ f+ Δs PT
Wherein, Δ f and Δ PTFrequency departure and dominant eigenvalues deviation are represented respectively, and B represents the frequency characteristic coefficient of power grid；
The AGC units include AGC_F units and AGC_PT units are respectively intended to the frequency departure present in elimination system
Δ f and dominant eigenvalues deviation delta PT；
When ACE is unsatisfactory for requiring, the active adjusting total amount of the AGC units is determined, and by analyzing unqualified reason, according to
Following strategy, selects corresponding AGC units to complete adjusting task：
When only Δ f is unqualified, the AGC_F units are only selected to act, the AGC_PT units are supported as standby；
As only Δ PTWhen unqualified, the AGC_PT units are only selected to act, the AGC_F units are supported as standby；
As Δ f and Δ PTWhen unqualified, the AGC_PT units and the AGC_F units act at the same time.
8. a kind of AGC based on same time scale as claimed in claim 7 and AVC control method for coordinating, it is characterised in that：
The step (3-2) is according to critical circuits power PijP active to AGC unitsG,iLevel of sensitivity, so that it is determined that each AGC units
Output distribution；The sensitivity is determined by following formula：
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Wherein, Vi、Vj、θi、θjRepresent the voltage magnitude and phase angle at circuit both ends respectively, and node i flows to the power of node j and is
Just；
According to following strategy, the output distribution of each AGC units is determined：
When AGC units integrally increase output, the minus AGC units of prioritizing selection sensitivity, overabsorption is contributed；
When AGC units integrally reduce output, prioritizing selection sensitivity is more than zero AGC units, and overabsorption is contributed；
When AGC units integrally do not change output, each AGC units do not distribute power.
9. a kind of AGC based on same time scale as claimed in claim 8 and AVC control method for coordinating, it is characterised in that：
After the step (3-3) is by determining each AGC unit outputs distribution, brings active regulated quantity into power flow equation and verified,
Judge hub node voltage VP, interconnection node voltage VTWith critical circuits power PijIt is whether out-of-limit；According to different out-of-limit feelings
Condition, using level of sensitivity as foundation, selects different AVC equipment to carry out auxiliary adjustment, determines the regulated quantity of each AVC equipment；
The auxiliary adjustment strategy of the AVC equipment is as follows：
If the hub node voltage VPGeneration is out-of-limit, and be full footAVC equipment ginseng
With adjusting；
If the interconnection node voltage VTGeneration is out-of-limit, and be full footAVC equipment
Participate in adjusting；
If the critical circuits power PijGeneration is out-of-limit, and be full footAVC equipment ginseng
With adjusting；
Wherein, Q is AVC equipment Reactive-power control amounts；
If VP、VT、PijThere are two or three variables out-of-limit at the same time among three, then strategy is out-of-limit by different variables more than
Problem is decoupled, and is adjusted using different AVC equipment, the influence between reducing.
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| CN102427244A (en) * | 2011-10-10 | 2012-04-25 | 国电南瑞科技股份有限公司 | Large-scale photovoltaic wind power information accessing system |
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| CN102593860A (en) * | 2012-01-18 | 2012-07-18 | 北京四方继保自动化股份有限公司 | Automatic generation control and automatic voltage control integrated substation system of power plant |
| CN203289107U (en) * | 2013-03-11 | 2013-11-13 | 中国电力科学研究院 | Multi-access-point photovoltaic grid-connected system electrical energy quality and reactive power voltage coordination control device |
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