CN106505636A - A kind of power system automatic power generation control method based on packet control - Google Patents
A kind of power system automatic power generation control method based on packet control Download PDFInfo
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- CN106505636A CN106505636A CN201610951812.3A CN201610951812A CN106505636A CN 106505636 A CN106505636 A CN 106505636A CN 201610951812 A CN201610951812 A CN 201610951812A CN 106505636 A CN106505636 A CN 106505636A
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- 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
Abstract
The present invention proposes a kind of power system Automatic Generation Control (AGC) method based on packet control.Power plant's controller (PLC) in control zone is divided into multiple packets, each packet includes multiple PLC, the different preferential regulation order of each grouping and setting；When electrical network has regulatory demand, it is considered to which the reservation for being carrying out the PLC of order adjusts power, and zoning always adjusts power；The size of power, the regulation order of each PLC packets are always adjusted according to region and adjusts nargin, select the PLC packets for participating in adjusting；According to corresponding distribution principle, region is always adjusted each PLC of the power distribution in PLC packets, and calculates PLC target powers, power is unallocated complete if region is always adjusted, selected the next PLC with priority to be grouped, continue distribution, until being assigned.The present invention can effectively reduce total regulation number of times of PLC in control zone, improve the reasonability and economy of AGC controls.
Description
Technical field
The invention belongs to power system Automatic Generation Control (AGC, Automatic Generation Control) technology
Field, specifically a kind of power system automatic power generation control method based on packet control.
Background technology
On the premise of high-quality electric energy is realized for the purpose of meeting power supply and demand Real-time Balancing, its basic task is AGC
Realize following target：1) maintain mains frequency within the scope of allowable error, frequency cumulative error is within limits value；2) control
Interconnected network exchanges only power and is worth operation according to plan, exchanges electric flux and is planning within limit value；3) power system security constraints are being met
In the case of condition, mains frequency and the external power planning of exchange only, coordination participation AGC power plant to exert oneself and distribute original by Optimum Economic
Then run, make electrical network obtain maximum benefit.AGC is a kind of real-time closed-loop control application, and its reliable and stable operation is electric power
The stable important guarantee of the real-time active balance of system, frequency and dominant eigenvalues.
The region for calculating typically always is adjusted power and is directly divided when Generation Control is carried out to control zone by traditional AGC
Each power plant's controller PLC is fitted on, when power plant's controller PLC quantity is more in control zone, this distribution method can cause each
Regulation power that power plant controller PLC undertakes is less to be even below which and adjusts dead band, the power plant's control for causing actual participation to adjust
Device PLC quantity is more, adjust the life-span for frequently affecting AGC units.And due to directly participating in the power plant that electrical network is adjusted in control zone
Controller PLC quantity is more, and the workload that dispatcher carries out the manual interventions such as power plant controller PLC control models setting is also larger,
Affect the work efficiency of dispatcher.The regulation quantity of power plant's controller PLC and total regulation number of times in control zone is how reduced, is reduced
Workload of the dispatcher to AGC manual interventions, improves the automaticity of AGC, just seems extremely important.There is presently no correlation
Technology, can solve the problem that problem above.
Content of the invention
The present invention seeks to：The present invention for power plant's controller PLC quantity in control zone more when, AGC directly controls electricity
Plant controller PLC can cause that the power plant's controller PLC quantity for participating in adjusting is more, adjust the frequent, problem of dispatcher's manual intervention,
A kind of power system automatic power generation control method based on packet control is proposed, the power plant controller PLC in control zone is entered
Row packet, Automation generation control carry out Generation Control according to power plant's controller PLC packets, realize that electric network active generates electricity and negative
The Real-time Balancing of lotus, so as to effectively reduce total regulation number of times of power plant's controller PLC in control zone, reduces dispatcher's manual intervention
Workload, improve AGC control reasonability and economy.
The technical scheme is that：A kind of power system automatic power generation control method based on packet control.By control zone
Interior power plant controller PLC is divided into multiple packets, and each packet includes multiple PLC, and each packet has different preferential regulations suitable
Sequence, Automation generation control carry out Generation Control according to power plant's controller PLC packets, realize that electric network active generates electricity and load
Real-time Balancing.
When electrical network has regulatory demand, according to Grid control deviation ACE and control strategy, it is considered to be carrying out adjusting
The reservation of the power plant controller PLC of order adjusts power, and zoning always adjusts power.The big of power is always adjusted according to region
The regulation order of little, each PLC packets and PLC packets rise, the regulation nargin of descent direction, select participate in adjusting PLC point
Group.
According to certain distribution principle, region is always adjusted each PLC of the power distribution in PLC packets, and calculates PLC's
Target power, if region is always adjusted, power is unallocated complete, selects the next PLC packets with preferentially regulation order, after
Continuous distribution, until all regulation power distributions are completed.Region always adjusts power when PLC is grouped and is allocated between interior each PLC, such as
When really unappropriated region always adjusts power less than the minimal adjustment power of the PLC packets that currently chooses, using sequential adjustment plan
Slightly it is allocated, otherwise adoption rate distribution adjusts strategy and is allocated.
When region always adjusts power distribution, to undertaking the power plant controller PLC of plan basic point pattern or artificial basic point pattern,
Set one to allow to adjust interval, when power plant controller PLC is after actually exerting oneself beyond allowing to adjust interval, meet certain bar
In the case of part, readjustment strategy is executed, make power plant controller PLC return to plan basic point or artificial basic point.
Method according to given by the present invention carries out power system Automatic Generation Control, effectively can reduce in control zone
Total regulation number of times of PLC, reduces the workload of dispatcher's manual intervention, improves the reasonability and economy of AGC controls.
Description of the drawings
Fig. 1 is the power system Automatic Generation Control flow chart based on packet control.
Specific embodiment
Below in conjunction with the accompanying drawings and it is embodied as that the technical solution of the present invention is further elaborated.
Power plant controller PLC in control zone is to the effect that divided into multiple packets by the present invention, and each packet is comprising more
Individual PLC, each packet have different preferential regulation orders；When electrical network has regulatory demand, it is considered to be carrying out regulating command
The reservation of PLC adjusts power, and the region that calculating electrical network is actually needed always adjusts power；According to region always adjust power size,
The regulation order of each PLC packets and PLC packets rise, the regulation nargin of descent direction, select the PLC packets for participating in adjusting；
According to certain distribution principle, region is always adjusted each PLC of the power distribution in PLC packets, and calculates the target work(of PLC
Rate, if region is always adjusted, power is unallocated complete, selects the next PLC packets with preferentially regulation order, continues distribution,
Until all regulation power distributions are completed.
Proposed by the present invention based on packet control power system automatic power generation control method, flow chart as shown in figure 1, its
The process of realization is comprised the following steps：
1st, power plant's controller PLC packets
Power plant controller PLC in control zone is divided into multiple packets, each packet includes multiple power plant's controller PLC,
Each packet has different preferential regulation orders, and the preceding power plant's controller PLC of regulation order is grouped in preferential when electrical network is adjusted
Adjust.In real time the exerting oneself of each packet, rated capacity, the AGC upper limit, AGC lower limit, climbing speed, fall off rate, rising are counted respectively
Direction minimal adjustment power, ascent direction maximal regulated power, descent direction minimal adjustment power, descent direction maximal regulated work(
Rate etc..
2nd, region always adjusts power calculation
According to Grid control deviation ACE and control strategy, it is considered to be carrying out the power plant controller PLC of regulating command
Reservation adjust power, zoning always adjusts power.
3rd, power plant's controller PLC packets are selected
Watt level, the regulation order of each power plant's controller PLC packets and power plant controller PLC are always adjusted according to region
Packet rises, total regulation nargin of descent direction, selects the power plant's controller PLC packets for participating in adjusting.
4th, power distribution is adjusted
According to certain distribution principle, region is always adjusted each power plant of the power distribution in power plant's controller PLC packets
Controller PLC, and calculate the target power of power plant controller PLC.
5th, target power is issued
The power plant's controller PLC target powers for needing to adjust are handed down to power plant or unit is executed.
It is described further below by specific embodiment.
1st, the region of consideration PLC reservations regulation power always adjusts power calculation
1) zoning control deviation ACE
When control model is that constant frequency is controlled, corresponding control model is FFC, and now, district control deviation ACE is counted
Calculate as follows：
ACE=B* (f-f0)
Wherein,
B is field frequency deviation factor (MW/HZ)；
F is practical frequency (HZ)；
f0Electrical network rated frequency (HZ).
When control model is constant tie--line control, corresponding control model is FTC, now, district control deviation ACE
It is calculated as follows：
ACE=I-I0
Wherein,
I is region interconnection actual power sum (MW)；
I0Power (MW) is exchanged only for regional planning.
When control model is frequency and tie-line bias control, corresponding control model is TBC, and now, Region control is inclined
Difference ACE is described as follows：
ACE=B* (f-f0)+(I-I0)
2) zoning adjusts power
It is as follows that region adjusts power calculation：
PR=Pp+PI+PS
Wherein, Pp=-GpEACE, PI=-GIIACE, PS=-GSΔ F, here, PpFor adjusting the proportional component of power；GpIt is ratio
Example gain coefficient；EACEFor ACE values；PIFor adjusting the quadrature components of power；GIFor integration gain factor；IACEFor during current examination
Section ACE integrated values；PSComponent is supported for adjusting the frequency of power；GSFor frequency gain coefficient；Δ F is frequency departure.
3) calculate to retain and adjust power
Retain regulation power and be equal to the target power of the PLC for being currently executing regulation and the summation of real-time output deviation.
4) the actual total regulation power in zoning
The actual total power calculation that adjusts in region is using following strategy：
A) when calculating regulation power is zero, i.e. in when adjusting dead band, the actual always regulation power in region is zero to AGC, does not enter
Row is adjusted；
B) when calculating adjusts power and reservation regulation power jack per line, and calculating adjusts the absolute value of power more than reservation regulation
The absolute value of power, then reality total power that adjusts in region is equal to calculating regulation power and the difference for retaining regulation power；
C) when calculating adjusts power and reservation regulation power jack per line, and calculating adjusts the absolute value of power less than reservation regulation
The absolute value of power, then the actual total power that adjusts in region is equal to zero；
D) when regulation power and reservation regulation power contrary sign is calculated, then the actual power that always adjusts in region adjusts work(equal to calculating
Rate adjusts the difference of power with retaining.
2nd, power plant's controller PLC Packet Selection Strategies
Power and each PLC packet regulation orders, the maximal regulated work(in raising and lowering direction are always adjusted according to current region
Rate, determines the PLC packets for needing to participate in regulation, can be a PLC packet, or multiple PLC packets.
When PLC packets are selected, determine PLC packet orders of preference according to packet regulation order.PLC packet regulation orders are got over
Little, then the selected priority being controlled is higher.
PLC grouping strategies are as follows：
1) residual accommodation power=practical adjustments power is set；
2) the regulation serial number being grouped according to unchecked PLC is ranked up, and selects to adjust that minimum PLC of serial number
Packet is grouped as current PLC；
If 3) rising (decline) direction minimal adjustment power of the residual accommodation power absolute value less than current PLC packets,
Then current PLC packets are selected carries out sequential adjustment, and residual accommodation power is zero；
If 4) rising (decline) direction minimal adjustment power of the residual accommodation power absolute value more than current PLC packets,
And rising (decline) the direction maximal regulated power less than current PLC packets, then current PLC packets are selected is allocated tune
Section, residual accommodation power is zero；
If 5) rising (decline) direction maximal regulated power of the residual accommodation power absolute value more than current PLC packets,
Then current PLC packets are selected is allocated regulation, and residual accommodation power deducts rising (decline) direction of current PLC packets most
2) big regulation power, turn；
6) repeat said process, until residual accommodation power be zero or all PLC packet selected.
3rd, power distribution strategies are adjusted
Region always adjusts power when PLC is grouped and is allocated between interior each PLC, if unappropriated region always adjusts power
When being less than the minimal adjustment power that the PLC for currently choosing is grouped, it is allocated using sequential adjustment strategy, otherwise adoption rate point
It is allocated with strategy is adjusted.
1) sequential adjustment strategy
All PLC for participating in adjusting carry out smallest allocation amount distribution by platform, and carry out sendout adding up according to sequence number, when
Sendout is cumulative always to adjust power more than region, then stop continuing distribution.
2) pro rate adjusts strategy
The PLC of all regulations of participating in the distribution, is allocated according to power sharing ratio coefficient is adjusted, and is carrying out last time life
The PLC of order is not involved in distributing.In assigning process, detect whether there is situations below：If 1. certain PLC regulation power allocation amount is little
In minimal adjustment sendout, then directly distribute the regulated quantity of the PLC by smallest allocation amount, deduct the distribution summation of situation PLC
Afterwards, by dump power, coefficient distributes to other PLC in proportion.If 2. certain PLC sendout exceedes maximal regulated amount, directly press
Maximum allocated amount distributes the regulated quantity of the PLC, and by dump power, coefficient distributes to other PLC in proportion.Repeat said process, directly
Complete to power distribution is adjusted.
4th, power plant's controller PLC readjustments strategy
To undertaking the power plant controller PLC of plan basic point pattern or artificial basic point pattern, if PLC is exerted oneself and plan in real time
The deviation that exerts oneself has exceeded readjustment base band, then when AGC is in regulation dead band, if current 10 minutes ACE meansigma methodss are less than finger
Set threshold value, then PLC execution readjustment is tactful, and target is exerted oneself and exerted oneself for current planning, makes power plant controller PLC return to plan basic point
Or artificial basic point.Meanwhile, once PLC plans are changed, readjustment strategy also being executed, readjustment arrives current planning value.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.
Claims (7)
1. a kind of based on the power system automatic power generation control method for being grouped control, it is characterised in that concrete steps include：
Step 1：Power plant controller PLC in control zone is grouped；
Step 2：According to Grid control deviation ACE and control strategy, zoning always adjusts power；
Step 3：Watt level is always adjusted according to region, the power plant's controller PLC packets for participating in adjusting are selected；
Step 4：According to the distribution principle for arranging, region is always adjusted each electricity of the power distribution in power plant's controller PLC packets
Plant controller PLC, and calculate the target power of power plant controller PLC；
Step 5：The power plant's controller PLC target powers for needing to adjust are handed down to power plant or unit is executed.
2. a kind of based on the power system automatic power generation control method for being grouped control as claimed in claim 1, it is characterised in that
The power plant controller PLC in control zone is divided into multiple packets in step 1, each packet includes multiple power plant's controller PLC, respectively
The different preferential regulation order of grouping and setting, the preceding power plant's controller PLC of regulation order is grouped in excellent when electrical network is adjusted
First adjust.
3. a kind of based on the power system automatic power generation control method for being grouped control as claimed in claim 1, it is characterised in that
The region calculated in step 2 always adjusts the reservation tune that power considers the power plant controller PLC for being carrying out regulating command
Section power.
4. a kind of based on the power system automatic power generation control method for being grouped control as claimed in claim 1, it is characterised in that
The power plant's controller PLC packets for participating in electrical network regulation are selected to need to consider power plant's controller PLC point simultaneously in step 3
The preferential regulation order of group and rising, the regulation nargin of descent direction.
5. a kind of based on the power system automatic power generation control method for being grouped control as claimed in claim 1, it is characterised in that
In step 4, the distribution principle includes：Power is always adjusted to the region in power plant's controller PLC packet Nei Ge power plant
When being allocated between controller PLC, if the unappropriated region always adjusts power less than the power plant's control that currently chooses
During the minimal adjustment power of device PLC packets processed, it is allocated using sequential adjustment strategy.
6. a kind of based on the power system automatic power generation control method for being grouped control as claimed in claim 1, it is characterised in that
In step 4, the distribution principle includes：Power is always adjusted to the region in power plant's controller PLC packet Nei Ge power plant
When being allocated between controller PLC, if the unappropriated region always adjusts power more than the power plant's control that currently chooses
During the minimal adjustment power of device PLC packets processed, adoption rate distribution adjusts strategy and is allocated.
7. a kind of based on the power system automatic power generation control method for being grouped control as claimed in claim 1, it is characterised in that
In step 4, to undertaking the power plant controller PLC of plan basic point pattern or artificial basic point pattern, set one and allow to adjust interval,
After the deviation that exerts oneself with plan of actually exerting oneself of power plant controller PLC is beyond allowing to adjust interval, if AGC is dead in adjusting
Area and current 10 minutes ACE meansigma methodss execute readjustment strategy less than threshold value is specified, then, make power plant controller PLC return to plan
Basic point or artificial basic point.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610951812.3A CN106505636B (en) | 2016-11-02 | 2016-11-02 | A kind of electric system automatic power generation control method based on grouping control |
| PCT/CN2017/095139 WO2018082359A1 (en) | 2016-11-02 | 2017-07-31 | Group-control-based automatic generation control method for power system |
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| CN201610951812.3A CN106505636B (en) | 2016-11-02 | 2016-11-02 | A kind of electric system automatic power generation control method based on grouping control |
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| CN107910885A (en) * | 2017-11-16 | 2018-04-13 | 深圳供电局有限公司 | A kind of slave station outer shroud current control method of Multi-end flexible direct current transmission system |
| WO2018082359A1 (en) * | 2016-11-02 | 2018-05-11 | 南京南瑞继保电气有限公司 | Group-control-based automatic generation control method for power system |
| CN108539800A (en) * | 2018-03-19 | 2018-09-14 | 南方电网科学研究院有限责任公司 | A kind of AGC closed loop test methods and device |
| CN109004641A (en) * | 2018-07-19 | 2018-12-14 | 南京南瑞继保电气有限公司 | A kind of microgrid source net lotus control method for coordinating based on energy source optimization scheduling |
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| CN111711205A (en) * | 2020-06-24 | 2020-09-25 | 国网湖南省电力有限公司 | Power grid automatic power generation control method, system and medium based on active nearby consumption |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018082359A1 (en) * | 2016-11-02 | 2018-05-11 | 南京南瑞继保电气有限公司 | Group-control-based automatic generation control method for power system |
| CN107910885A (en) * | 2017-11-16 | 2018-04-13 | 深圳供电局有限公司 | A kind of slave station outer shroud current control method of Multi-end flexible direct current transmission system |
| CN107910885B (en) * | 2017-11-16 | 2021-03-19 | 深圳供电局有限公司 | Slave station outer ring current control method of multi-terminal flexible direct current transmission system |
| CN108539800A (en) * | 2018-03-19 | 2018-09-14 | 南方电网科学研究院有限责任公司 | A kind of AGC closed loop test methods and device |
| CN109004641A (en) * | 2018-07-19 | 2018-12-14 | 南京南瑞继保电气有限公司 | A kind of microgrid source net lotus control method for coordinating based on energy source optimization scheduling |
| CN109698510A (en) * | 2019-01-25 | 2019-04-30 | 国网江苏省电力有限公司电力科学研究院 | Inhibit the control method of low-frequency oscillation of electric power system |
| CN111711205A (en) * | 2020-06-24 | 2020-09-25 | 国网湖南省电力有限公司 | Power grid automatic power generation control method, system and medium based on active nearby consumption |
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| WO2018082359A1 (en) | 2018-05-11 |
| CN106505636B (en) | 2018-11-13 |
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