CN103151801B - Automatic gain control (AGC) unit coordination control method based on fire-water power joint optimization scheduling - Google Patents
Automatic gain control (AGC) unit coordination control method based on fire-water power joint optimization scheduling Download PDFInfo
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Abstract
The invention discloses an automatic gain control (AGC) unit coordination control method based on hydroelectric and thermal power joint optimization scheduling. The method comprises the steps that a main control area is established in a system, objective sub-areas are established according to strategy requirements, contents of a control unit is confirmed according to differences of regulating characteristics of an AGC unit, subjection relationships among a hydroelectric unit, a thermal power unit, the control unit and the objective sub-areas are set in an online mode, priority levels are set according to strategies such as a regulation margin, planned electric quantity and a grid purchase price, proportions are regulated according to established responsibility sharing factors, remained regulating quantity is coordinated among units or in units, and a final regulating command is issued after passing security correction. According to the steps, all the hydroelectric and thermal power AGC units together bear the regulating quantity in an area, the contribution functions of the various units to system AGC regulation are sufficiently played, and dynamic tracking requirements of different objects can be met through a manner that the control strategies are modified in an online mode.
Description
Technical field
The invention belongs to technical field of electric power system control, the present invention relates to a kind of AGC unit cooperative control method of electric power system Hydro-Thermal Systems joint optimal operation more precisely.
Background technology
The energy supply structure of current China electrical network determines the unit participating in AGC adjustment and is mainly divided into Hydropower Unit and the large class of fired power generating unit two.Hydropower Unit fast response time, has extraordinary adjusting function, but the proportioning of occupying in China's most area electrical network is less, and simple dependence Hydropower Unit cannot meet AGC completely and regulate needs for subsequent use; On the other hand, in order to utilize hydraulic power potentials to greatest extent, Hydropower Unit should be in multiple, full hair-like state in the wet season as far as possible, and this mode makes its pondage be very limited; And in dry season, hydraulic energy of hydropower station total amount is limited, cause the AGC regulating power of Hydropower Unit greatly to reduce again, the frequency modulation peak regulation pressure of electrical network all transfers to fired power generating unit.But although the accounting of fired power generating unit in installed capacity in power grid is with the obvious advantage, having huge adjustment standby storage can for excavating, and its response speed is slow, and adjustment process is comparatively large by effect on coal quality, cannot follow the tracks of main website AGC instruction timely and accurately.The how Hydro-Thermal Systems resource of reasonable coordination electrical network inside, make full use of electrical network existing unit expansion AGC pondage, evade the performance difference that Hydro-Thermal Systems regulates resource to present, within the scope of net provincial power network, realize the most optimum distribution of resources of " hydrothermal coordination, mutually supplementary, promotion jointly ", have important practical significance.
Document one " Henan Electric Power System AGC thermal-hydro coordination experimental study " (Automation of Electric Systems 2008 the 32nd volume the 6th phase the 99th page) have employed the coordination problem that two schemes solves Hydro-Thermal Systems AGC unit.One is the fired power generating unit synchronous tracking system load variations utilizing governing speed slow, carries out controls in advance, Hydropower Unit real-time tracking system frequency and Tie line Power under super short period load control model.Another kind of scheme is on the basis of waiting variable capacity ratio mode, and the factor is shared in utilization makes fired power generating unit and Hydropower Unit shared region regulated quantity.
The control program that document one proposes, utilizes in the time scale that do not coexist of unit basic point power calculation mode and has carried out preliminary coordination to Hydro-Thermal Systems unit.This two schemes can increase the adjustment reserve capacity in region, avoids occurring that the phenomenon that the fast unit of regulations speed loses regulating power too early occurs.But it should be noted that the natural partition characteristic fixedly sharing Summing Factor control area cannot make region regulatory demand reach reasonable balance between Hydro-Thermal Systems unit, only utilize the adjustment of basic point power also cannot fundamentally solve unit cooperative problem.
Whole day is divided into five periods according to the Annual distribution characteristic of system loading and interconnection curve by document two " Yunnan Power System Hydro-Thermal Systems unit AGC coordination optimization control strategy " (Automation of Electric Systems 2009 the 33rd volume the 20th phase the 96th page), and day part is according to the control strategy of load variations steep schedule ahead Hydro-Thermal Systems unit.Medium and small Hydropower Unit is utilized to regulate interconnection tie power fluctuation and system frequency change in the system loading Rapid Variable Design period, Large Hydropower Plant only participates in when district control deviation is larger regulating, and all fired power generating unit all participate in AGC clustered control according to ultra-short term result; At system loading plateau, the fired power generating unit of middle small power station and better performances maintains original control model, Large Hydropower Plant band base load, and the fired power generating unit of poor-performing changes tracking into and plans a few days ago.
The time-division transfer method that document two is mentioned carries out unit cooperative under the prerequisite considering control area active power balance constraint.Similar with document one, when the method for factor pro rate region regulatory demand is fixedly shared in employing, the phenomenon that unit comes and goes adjustment is comparatively obvious, and the regulated quantity that every platform unit is born is less, and regulating power cannot be not fully exerted.In addition, day part control strategy all needs to formulate in advance according to system loading level, cannot requirement of real time when tackling otherness operating condition.
Document three " meritorious controls in advance and online hydro thermal coordination control strategy " (Automation of Electric Systems 2008 the 32nd volume the 22nd phase the 16th page) discusses the on-line coordination strategy of Hydro-Thermal Systems unit from the different angles of Time and place.Based on the application model of controls in advance in electric power system active power dispatch different time sections, the distribution method of Hydro-Thermal Systems AGC unit being carried out the mode shared load regulation total amount of dividing into groups and sorting according to priority proposed, achieves generating set coordination in time; And the method for decoupling zero tracing area regulating power and internal stability section, then reach the object of carrying out cooperation control on Spatial Dimension.
Compare with document one, document two, the method that document three proposes no longer adopts fixedly shares the factor as unique distributive condition, and the different aspects controlled at Hydro-Thermal Systems unit cooperative are explored.But prioritization strategy only uses under controls in advance mode, this precondition makes unit be subject to the restriction of real-time control mode comparatively large, and control strategy lacks general adaptability preferably; The control section tight binding that decoupling zero spatially then monitors with needs, cannot adapt to the flexible switching of section target.
Through preliminary search, find no the patent entry relevant to content of the present invention temporarily.
Summary of the invention
Technical problem to be solved by this invention is:
1, the unique mode fixedly sharing the total regulating power in Summing Factor local priority strategy range of distribution of employing is improved, make all AGC Hydro-Thermal Systems units shared region regulated quantity in global scope;
2, provide a kind of Hydro-Thermal Systems AGC unit on-line coordination control method, adopt grouping control technology and the dynamic tracking mode of target setting, realize the online of AGC control strategy and change in real time;
3, promote Hydro-Thermal Systems unit and combine the regulation quality participating in AGC and control, give full play to the adjustment potential of dissimilar AGC unit.
For overcoming the above problems, the present invention takes following technical scheme to realize:
Based on an AGC unit cooperative control method for Hydro-Thermal Systems joint optimal operation, it is characterized in that, comprise the following steps:
1) in AGC system, set up a master control district, for tracking system frequency departure and interconnection plan skew, perform the adjustment task under general categories, and arrange between control group group and distribute initial policy, according to priority mode, need to determine priority initial policy;
2) unit tracking target Mathematical Modeling is set up, for building the vector space of unit dynamic conditioning target; Utilize SCADA to measure combination computing formula, determine the relating attribute of tracking target and combinatorial formula;
3) according to the difference of unit regulating characteristics, set up control group initial model, comprise control strategy, positive and negative urgent district threshold, control group shaping modes, control group in group and share the contents such as the factor;
4) set up power plant's controller model, unit allocation parameter is set, and have the membership between control packet according to regulating characteristics determination unit and system;
5) grouping strategy is drafted according to system current operating conditions and unit regulating characteristics, on-line tuning unit tracking target and affiliated control group;
6) control group belonging to unit needs to coordinate collocation according to the many-one relationship between tracking target and control group, again mates and correct process for faulty combination;
7) calculate total regulatory demand according to area control mode, enable dynamic dead zone shielding strategy: when regulatory demand is less than dynamic dead zone decay threshold, regulatory demand resets, the random perturbation caused due to high frequency noise factor with filtering;
8) total for region regulatory demand is distributed between each control group group.Distribution principle is: according to priority mode between group, and whole control group all sorts according to selected principle, and for making full use of hydroelectric resources, Hydropower Unit comes before fired power generating unit all the time; Share mode according to ratio, then in utilization group, unit is shared factor sum and is shared the factor as control group and bear grouping regulated quantity;
9) total for control group regulated quantity is distributed in group.Distribution principle is: according to priority mode, needs to carry out error correction preliminary treatment, calculates unit serial number after determining primary and secondary ranking factor, and each unit bears regulated quantity according to maximum nargin of distributing; Share mode according to ratio in group, then share the factor according to unit and redistribute, the region regulated quantity do not completed need suitably shift;
10) Security Checking is carried out to the presumptive instruction that coordination strategy control system produces, comprising: the reverse time delay calibration of unit, the verification of control signal dead band, the verification of permission control command, the verification of maximal regulated amount, the verification of unit operation limit value etc.
The beneficial effect that the present invention reaches: Hydro-Thermal Systems combined dispatching strategy provided by the invention, when regulatory demand change in region is frequent, can reduces unit and come and go adjustment number of times, reduce unit wearing and tearing; Make each unit according to the practical adjustments ability of self, regulate according to the difference of different control objectives; Make the total regulatory demand in region reasonable distribution between unit, give full play to unit and regulate the supporting role to AGC for subsequent use.
Accompanying drawing explanation
Fig. 1 is allocation strategy logic diagram between control group group;
Fig. 2 is the schematic diagram that control group adopts priority assign strategy;
Fig. 3 is allocation strategy logic diagram in control group group.
Embodiment
In the present invention, disclose a kind of AGC modeling method based on control packet: in AGC system, set up master control district, for tracking system frequency departure and interconnection plan skew.Master control district is the calculating carrier of the total regulating power in region, and concrete mode is determined by area control mode.With TBC (Tie-line BiasControl, order wire frequency Deviation Control, a kind of control model simultaneously considering system frequency and interconnection deviation) mode is example, when master control district comprises system frequency and interconnection exchanges component simultaneously, the account form of ACE (AreaControl Area, district control deviation) is:
ACE＝K·(f-f
0)+(P-P
0) (1)
When considering that the time difference corrects component, the account form of ACE changes to:
ACE＝K·(f-f
0-δf)+(P-P
0) (2)
When considering that being not intended to electricity repays component, the account form of ACE changes to:
ACE＝K·(f-f
0)+(P-P
0-δP) (3)
In formula (1) ~ (3), K is the system frequency deviation coefficient jointly determined by generating set and load; F, f
0the real-time frequency of difference representative system current time and scheduled frequency; P, P
0represent online measuring and the planned value of Tie line Power between master control district and adjacent area; δ f represents that the time difference corrects component; δ P represents that electricity corrects component unintentionally.
Can find out, the frequency measuring point in master control section model, interconnection measuring point and planned value measuring point are all absolutely necessary parameter.In addition, also need, for master control district is about to control strategy initial value between the control packet designated groups that has, to comprise pro rate and priority two kinds.When being appointed as priority policy, needing to arrange concrete priority mode further, comprising and regulating the mode such as nargin, plan deviation, artificial appointment.
Control packet model needs to set up on the basis in master control region, and region and control group present the logical relation of one-to-many.Generally, AGC unit can make unit be incorporated to different control group according to following categorical attribute: a) unit base attribute, as Hydropower Unit and fired power generating unit; B) total capacity size is regulated, as medium and small Hydropower Unit and high-capacity water power station; C) regulations speed speed; D) with the correlation degree of important supervision section; E) Hydropower Unit upstream-downstream relationship; F) the geographical feature of unit etc.
Control packet model determines the embodiment of Hydro-Thermal Systems AGC unit cooperative allocation strategy, needs to carry out initialization to its base attribute in model process of establishing.Particular content comprises: between group, pro rate mode specified control group always shares the factor; For priority mode specifies specific strategy, as adjustable nargin, plan deviation, regulations speed, rate for incorporation into the power network, energy consumption height; Determine to organize interior primary and secondary strategy collocation mode; The emergency control threshold etc. of control group.
For the diversity of expansion AGC unit allocation target, in the present invention, a kind of two-zone model method adapting to Hydro-Thermal Systems unit cooperative and control is disclosed.On the master control region base set up, increase the target partition that each control group is corresponding, form Hydro-Thermal Systems AGC unit tracking target vector space.Typical application comprises: the zonal control after system splitting; The section tidal current of particular branches is followed the tracks of; The fixed point of perimeter is supported etc.
Each target partition and master control region exist with parallel relation pattern.The control objectives in master control region derives from inner ACE result of calculation, or the ACE that higher level's scheduling institution directly issues measures; The tracking main points of target partition are then the result of calculation of the combinatorial formula measuring (other outside remote measurement ACE measures) based on SCADA.These results all access each target partition in the mode of remote measurement ACE, realize the equivalency transform of AGC control area.
The frequency measuring point of target partition, interconnection measuring point and planned value measuring point are not all absolutely necessary part, but consider that target partition is also a kind of special control area in itself, still need to specify corresponding measurement source, carry out unitized process to facilitate system.Simple method is the Correlated Case with ARMA Measurement of using master control region, enables target partition measure validity check by region smoothly.
For ensureing that the strategy that control packet adopts accurately comes into force, the setting of the ACE each section of threshold value of target partition also needs to be noted.Under normal circumstances, when control area is in the secondary state of emergency, if the regulating power of unit is unfavorable for the recovery of ACE, this AGC instruction can be cancelled by system; When control area is in a state of emergency, if the basic point power of unit is unfavorable for the recovery of region ACE, then force basic point power to revert to actual exerting oneself, the factor of sharing now gets unit regulations speed.Therefore, if the original measurement of tracking target is comparatively large, ARR (Area Regulation Requirement, region regulatory demand) the secondary urgent district threshold of target partition and urgent district threshold also should suitably amplify.Usually, it is good for enabling target partition often be in normal regulating district.
In the present invention, distribution method between a kind of region regulatory demand group adapting to the control of Hydro-Thermal Systems AGC unit cooperative is disclosed.Accompanying drawing 1 is the schematic diagram that regulated quantity carries out distributing between control group, and below discussing and choosing tracking system frequency and interregional interconnection be the master control region of target is that example is illustrated.The control group being in normal regulating mode under any circumstance all participates in the Target Assignment of the total regulatory demand in region, and the control group belonging to urgent shaping modes then only just participates in when master control district ARR exceedes urgent district's threshold regulating.
If adopt priority mode to participate in the distribution between control group, the component load factor is then the key factor needing to consider.According to the difference of priority policy, the account form of the component load factor is also different:
1) nargin priority is regulated.With unit current residual variable capacity ratio for benchmark shares the factor.
Wherein, P
regthe adjustment current for unit is for subsequent use; P
limupfor the upper adjustment of unit is for subsequent use; P
limdnfor the lower adjustment of unit is for subsequent use.When control group corresponding region need add exert oneself time, current for subsequent use get control group regulates for subsequent use; When control group corresponding region need subtract exert oneself time, take off regulate for subsequent use.
2) plan deviation priority.Using unit actual exert oneself depart from planned value how far as sharing the factor.
α＝P
gen-P
sche(5)
In formula, P
genfor the current actual of unit is exerted oneself; P
shcefor the real-time interpolation result of unit Plan Curve.
3) electricity priority is planned.Complete the percentage that electricity accounts for whole day plan electricity determine to share the factor so that unit is current.
In formula, T
0for electricity accumulation initial time; T
nowfor current time; T
daybe the total time length of planning electricity in one day; P
genactually to exert oneself for unit is current; P
shcefor unit output plan.
4) regulations speed priority policy.Share the factor to be determined by unit regulations speed.
In formula, V
upfor regulations speed on unit; V
dnfor regulations speed under unit; P
regfor region regulatory demand.
5) rate for incorporation into the power network priority.Share the factor to be determined by set grid-connection expense, in reverse proportionate relationship.
In formula, C (i) is for generating set is in the rate for incorporation into the power network of the i-th period.
Share after the factor determines, form the unit sequence that rising tune joint and falling tone save.When unit needs increase to exert oneself, sequential search from sharing the little unit of the factor, preferentially bears regulating power by given regulated quantity; Unit needs to subtract when exerting oneself, then reverse direction searches distribution from sharing the large unit of the factor.
Before every sub-distribution regulating power, need to add up unit in advance at present still at the adjustment amount of execution, and it deducted from regulating power (equidirectional) or strengthen (in the other direction).In general, the regulation time of fired power generating unit is longer, and new regulatory demand is often large no more than the regulated quantity performed, and new unit of now should not reallocating regulates.
Fig. 2 illustrates the schematic diagram adopting priority assign strategy between control group.
If distribute between adoption rate mode participation group between control group, first utilize control group always to share factor calculating group and bear regulated quantity, and sendout can carry out cutting according to control group is maximum; If now control area still has regulatory demand to remain, then by still having the control group of higher abundant intensity to bear after first sub-distribution.
In the present invention, a kind of distribution method of the total regulatory demand of control group in group adapting to Hydro-Thermal Systems AGC unit cooperative and control is disclosed.Accompanying drawing 3 is the schematic diagram that control group regulated quantity is distributed in group.Different from priority assign strategy between group, in-group priority needs first to carry out error correction preliminary treatment to the priority selected, for the situation that strategy in strategy between appearance group and group is inconsistent, to regulate strategy in nargin priority covering group.In addition, under pro rate strategy, if unit commitment to regulated quantity be less than minimal adjustment step-length, then need this part regulated quantity to transfer to next unit in control group, to reduce the error between control group actual allocated regulated quantity and total regulatory demand.
In the present invention, disclose the safe checking method of one group of AGC instruction, comprising: 1) the reverse time delay calibration of unit.When there is unit present instruction and the inconsistent situation of previous command direction, need to consider certain delay process, to ensure that plant stand side has enough digestions time; 2) control signal dead band verification.Issue link in instruction, if unit AGC instruction and current actual exerting oneself are less than control signal dead band, then cancel this and regulate; Distribute link in regulated quantity, then need to shift current regulated quantity; 3) control command allows test verification.For PROP (Proportional Control Mode, waits proportion adjustable pattern) pattern or secondary urgent district situation, if unit regulated quantity and region regulatory demand are contrary distribution, then unit no longer participates in this adjustment.In the two priority classes grouping strategy that the present invention mentions, Threshold Region, urgent district point control group can be utilized to participate in the condition of region regulated quantity distribution, this and permission test verification successively complete verifying work on the time arranges in pairs or groups.4) maximal regulated amount verification.Unit commitment to final instruction and current actual deviation of exerting oneself can not exceed the restriction of maximal regulated step-length.5) unit operation limit value verification.Unit operation limit value is the common factor result to threshold value and remote measurement limit value, for Hydropower Unit, also has the restriction of multistage vibrating area.Unit instruction should operate in and regulate in limits, and is in the unit in vibration area, then need to forbid operation area to leave fast to fixed step size.
The present invention is illustrated according to the preferred embodiment, should be appreciated that above-described embodiment does not limit the present invention in any form, the technical scheme that the form that all employings are equal to replacement or equivalent transformation obtains, and all drops within protection scope of the present invention.
Claims (12)
1., based on the AGC unit cooperative control method of Hydro-Thermal Systems joint optimal operation, it is characterized in that, comprise following steps:
1) in AGC system, set up a master control district, for tracking system frequency departure and interconnection plan skew, perform the adjustment task under general categories, and arrange between control group group and distribute initial policy, according to priority mode, determine priority initial policy;
2) unit tracking target Mathematical Modeling is set up, for building the vector space of unit dynamic conditioning object; Utilize SCADA to measure the computing formula of combination dynamic object, determine the relating attribute of tracking target and combinatorial formula;
3) according to the difference of unit regulating characteristics, set up control group initial model, comprise control strategy, positive and negative urgent district threshold, control group shaping modes, control group in group and share the factor;
4) set up power plant's controller model, unit allocation parameter is set, and have the membership between control packet according to regulating characteristics determination unit and system;
5) grouping strategy is drafted according to system current operating conditions and unit regulating characteristics, on-line tuning unit tracking target and affiliated control group;
6) control group belonging to unit coordinates collocation according to the many-one relationship between tracking target and control group, again mates and correct process for faulty combination;
7) calculate total regulatory demand according to area control mode, enable dynamic dead zone shielding strategy: when regulatory demand is less than dynamic dead zone decay threshold, regulatory demand resets, the random perturbation caused due to high frequency noise factor with filtering;
8) total for region regulatory demand is distributed between each control group group;
9) total for control group regulated quantity is distributed in group;
10) Security Checking is carried out to the presumptive instruction that coordination strategy control system produces, comprising: the reverse time delay calibration of unit, the verification of control signal dead band, the verification of permission control command, the verification of maximal regulated amount, the verification of unit operation limit value.
2. the AGC unit cooperative control method based on Hydro-Thermal Systems joint optimal operation according to claim 1, is characterized in that: in step 1) in, when master control district comprises system frequency and interconnection exchanges component simultaneously, the account form of ACE is:
ACE＝K·(f-f
0)+(P-P
0) (1)
When considering that the time difference corrects component, the account form of ACE is:
ACE＝K·(f-f
0-δf)+(P-P
0) (2)
When considering that being not intended to electricity repays component, the account form of ACE is:
ACE＝K·(f-f
0)+(P-P
0-δP) (3)
In formula (1) ~ (3), K is the system frequency deviation coefficient jointly determined by generating set and load; F, f
0the real-time frequency of difference representative system current time and scheduled frequency; P, P
0represent online measuring and the planned value of Tie line Power between master control district and adjacent area; δ f represents that the time difference corrects component; δ P represents that electricity corrects component unintentionally.
3. the AGC unit cooperative control method based on Hydro-Thermal Systems joint optimal operation according to claim 1, it is characterized in that: in step 2) in, on the basis in the master control region set up, increase the target partition of each control group, according to dispatching requirement and the control objectives of reality, it is the Hydro-Thermal Systems AGC set configuration object space in region.
4. the AGC unit cooperative control method based on Hydro-Thermal Systems joint optimal operation according to claim 3, it is characterized in that: in described step 2) in, each target partition and master control region exist with parallel relation pattern, the control objectives in master control region derives from inner ACE result of calculation, or the ACE that higher level's scheduling institution directly issues measures; The tracking main points of target partition are then directed to the result of calculation that SCADA measures combinatorial formula, no matter be the ACE that higher level issues, or the tracing object of target partition, all accesses each target partition in the mode of remote measurement ACE, realizes the equivalency transform of AGC control area.
5. the AGC unit cooperative control method based on Hydro-Thermal Systems joint optimal operation according to claim 4, it is characterized in that: the method to set up of the ACE each section of threshold value of target partition is: when control area is in the secondary state of emergency, if the regulating power of unit is unfavorable for the recovery of ACE, then this remote regulating instruction is cancelled by AGC system; When control area is in a state of emergency, if the basic point power of unit is unfavorable for the recovery of region ACE, then force basic point power to revert to actual exerting oneself, the factor of sharing now gets unit regulations speed.
6. the AGC unit cooperative control method based on Hydro-Thermal Systems joint optimal operation according to claim 1, it is characterized in that: in step 3) ~ 6) in, Hydro-Thermal Systems AGC unit is according to different Attribute transposition control groups, target partition and control group are the relation of one-to-many, and comprise one or more AGC unit under each control group.
7. the AGC unit cooperative control method based on Hydro-Thermal Systems joint optimal operation according to claim 1, it is characterized in that: in step 8) ~ 9) in, priority policy and pro rate strategy distribute in link between the group of control group, in group puts on an equal footing, and all units in control group all bear regulated quantity.
8. the AGC unit cooperative control method based on Hydro-Thermal Systems joint optimal operation according to claim 1, it is characterized in that: in step 3) ~ 9) in, the target partition that control group is corresponding and the control group relation belonging to unit all require online modification according to electric power system Real-Time Scheduling.
9. the AGC unit cooperative control method based on Hydro-Thermal Systems joint optimal operation according to claim 1, it is characterized in that: in described step 8) in, distribution principle is: according to priority mode between group, whole control group all sorts according to selected principle, for making full use of hydroelectric resources, Hydropower Unit comes before fired power generating unit; Share mode according to ratio, then in utilization group, unit is shared factor sum and is shared the factor as control group and bear grouping regulated quantity.
10. the AGC unit cooperative control method based on Hydro-Thermal Systems joint optimal operation according to claim 1, it is characterized in that: in described step 9) in, distribution principle is: according to priority mode, then carry out error correction preliminary treatment, after determining primary and secondary ranking factor, calculate unit serial number, each unit bears regulated quantity according to maximum nargin of distributing; Share mode according to ratio in group, then share the factor according to unit and redistribute, the region regulated quantity do not completed shifts.
The 11. AGC unit cooperative control methods based on Hydro-Thermal Systems joint optimal operation according to claim 9, it is characterized in that: in described step 8) in, if adopt priority mode to participate in the distribution between control group, component load the factor account form be following in one:
1) nargin priority is regulated, with unit current residual variable capacity ratio for benchmark shares the factor,
Wherein, P
regthe adjustment current for unit is for subsequent use; P
limupfor the upper adjustment of unit is for subsequent use; P
limdnfor the lower adjustment of unit is for subsequent use, when control group corresponding region add exert oneself time, current for subsequent use get control group regulates for subsequent use; When control group corresponding region subtract exert oneself time, take off regulate for subsequent use;
2) plan deviation priority, using unit actual exert oneself depart from planned value how far as sharing the factor, α=P
gen-P
sche(5)
In formula, P
genfor the current actual of unit is exerted oneself; P
shcefor the real-time interpolation result of unit Plan Curve;
3) plan electricity priority, complete the percentage that electricity accounts for whole day plan electricity determine to share the factor so that unit is current,
In formula, T
0for electricity accumulation initial time; T
nowfor current time; T
daybe the total time length of planning electricity in one day; P
genactually to exert oneself for unit is current; P
shcefor unit output plan;
4) regulations speed priority policy, shares the factor and is determined by unit regulations speed,
In formula, V
upfor regulations speed on unit; V
dnfor regulations speed under unit; P
regfor region regulatory demand;
5) rate for incorporation into the power network priority, shares the factor and is determined by set grid-connection expense, in reverse proportionate relationship,
In formula, C (i) for generating set is in the rate for incorporation into the power network of the i-th period,
Share after the factor determines, form the unit sequence that rising tune joint and falling tone save, when unit increase is exerted oneself, sequential search from sharing the little unit of the factor, preferentially bears regulating power by given regulated quantity; Unit subtracts when exerting oneself, then reverse direction searches distribution from sharing the large unit of the factor.
The 12. AGC unit cooperative control methods based on Hydro-Thermal Systems joint optimal operation according to claim 1, is characterized in that: in described step 10) in, described safe checking method, comprises the following steps:
1) the reverse time delay calibration of unit: when there is unit present instruction and the inconsistent situation of previous command direction, certain delay process is set, to ensure that plant stand side has enough digestions time;
2) control signal dead band verification: issue link in instruction, if unit AGC instruction and current actual exerting oneself are less than control signal dead band, then cancel this and regulates; Distribute link in regulated quantity, then the regulated quantity that current unit is cancelled is transferred to next AGC unit;
3) control command allows test verification: for PROP pattern or secondary urgent district situation, if unit regulated quantity and region regulatory demand are contrary distribution, then unit no longer participates in this adjustment;
4) maximal regulated amount verification: unit commitment to final instruction and current actual deviation of exerting oneself be no more than the restriction of maximal regulated step-length;
5) unit operation limit value verification: unit operation limit value is the common factor result to threshold value and remote measurement limit value, for Hydropower Unit, unit instruction operation in adjustment limits, and is in the unit in vibration area, then forbid operation area leave to fixed step size fast.
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| CN103746408B (en) * | 2014-01-28 | 2018-06-15 | 北京科东电力控制系统有限责任公司 | Large-scale wind power AGC control method for coordinating |
| US20160124411A1 (en) * | 2014-10-31 | 2016-05-05 | Qualcomm Incorporated | Distributed energy demand management |
| CN104578113B (en) * | 2015-01-05 | 2017-02-01 | 国电南瑞科技股份有限公司 | Unit control mode self-adapting switching method based on AGC |
| CN105048514B (en) * | 2015-07-14 | 2017-03-01 | 国电南瑞科技股份有限公司 | A kind of unit cooperative control method based on regulation performance consistency analysis |
| CN105539524A (en) * | 2016-01-22 | 2016-05-04 | 石家庄铁道大学 | Intersection controller system for tramcars |
| CN106505636B (en) * | 2016-11-02 | 2018-11-13 | 南京南瑞继保电气有限公司 | A kind of electric system automatic power generation control method based on grouping control |
| CN107516899B (en) * | 2017-10-11 | 2020-07-28 | 云南电力调度控制中心 | Processing method of multi-frequency measuring point in automatic power generation control system |
| CN109087494B (en) * | 2018-08-21 | 2021-05-14 | 广州极飞科技股份有限公司 | Control method of equipment end, control method of control end, device and system |
| CN111769576A (en) * | 2020-07-23 | 2020-10-13 | 中国电力科学研究院有限公司 | Method, system, device and medium for controlling power frequency of energy storage resource electric power system |
| CN112737120B (en) * | 2020-12-26 | 2024-03-22 | 中国南方电网有限责任公司 | Regional power grid control report generation method and device and computer equipment |
| CN113098059A (en) * | 2021-04-07 | 2021-07-09 | 国网安徽省电力有限公司六安供电公司 | AGC advanced control method containing multiple types of new energy |
| CN113315175B (en) * | 2021-06-16 | 2022-07-12 | 华能澜沧江水电股份有限公司 | Hydropower and thermal power active power dynamic compensation method based on primary frequency modulation and secondary frequency modulation |
| CN114035554B (en) * | 2021-11-18 | 2024-02-20 | 广东电网有限责任公司 | Offshore wind farm operation control test system |
| CN117096876B (en) * | 2023-10-19 | 2024-01-12 | 国能日新科技股份有限公司 | Hierarchical multi-system cooperative control method, device and equipment based on distributed power supply |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478168A (en) * | 2009-01-16 | 2009-07-08 | 湖南省电力公司调度通信局 | Method for optimizing electric grid hydroelectricity rotation backup in real-time scheduling |
| CN101917024A (en) * | 2010-03-29 | 2010-12-15 | 福建省电力有限公司 | Generating method of universality cost space in security-constrained dispatch |
| CN101938141A (en) * | 2010-08-02 | 2011-01-05 | 中国南方电网有限责任公司 | Method for evaluating and optimizing auto generation control effect of large power network grid-connected power plant |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007104775A (en) * | 2005-10-03 | 2007-04-19 | Matsushita Electric Ind Co Ltd | Energy demanding/supplying method in combined power supply, and energy demanding/supplying apparatus |
| JP2011050138A (en) * | 2009-08-26 | 2011-03-10 | Tokyo Electric Power Co Inc:The | Output controller for water/salt water electrolyzer |
-
2012
- 2012-02-14 CN CN201210032086.7A patent/CN103151801B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478168A (en) * | 2009-01-16 | 2009-07-08 | 湖南省电力公司调度通信局 | Method for optimizing electric grid hydroelectricity rotation backup in real-time scheduling |
| CN101917024A (en) * | 2010-03-29 | 2010-12-15 | 福建省电力有限公司 | Generating method of universality cost space in security-constrained dispatch |
| CN101938141A (en) * | 2010-08-02 | 2011-01-05 | 中国南方电网有限责任公司 | Method for evaluating and optimizing auto generation control effect of large power network grid-connected power plant |
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