CN104242316B - Analytical method and the system of low-frequency and low-voltage cutting load total amount - Google Patents
Analytical method and the system of low-frequency and low-voltage cutting load total amount Download PDFInfo
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- CN104242316B CN104242316B CN201410495497.9A CN201410495497A CN104242316B CN 104242316 B CN104242316 B CN 104242316B CN 201410495497 A CN201410495497 A CN 201410495497A CN 104242316 B CN104242316 B CN 104242316B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
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Abstract
The analytical method and the system that the invention provides a kind of low-frequency and low-voltage cutting load total amount, its method comprises step: definite value information, intake information, the electric parameters information of obtaining stability control device; Determine the interruptable power value of each load circuit based on these information, that determines the each priority of stability control device according to interruptable power value can cutting load amount; According to the first real cutting load amount of can cutting load amount determining each round of stability control device; Determine the first real cutting load total amount of each round in region to be analyzed according to first of each stability control device the real cutting load amount; Determine the second real cutting load total amount of each round in region to be analyzed according to second of each round of the each low-frequency low-voltage load shedding device obtaining the real cutting load amount; Determine the total real amount of cutting of low-frequency and low-voltage cutting load of each round of region to be analyzed according to the first real cutting load total amount and the second real cutting load total amount, for management and running personnel reasonable arrangement needs cutting load amount and adjust in time Emergency Control Strategy to provide basis for estimation, to improve load monitoring effect.
Description
Technical field
The present invention relates to electric power system dispatching operation monitoring technical field, particularly relate to a kind of low-frequency and low-voltage and cutAnalytical method and the system of load total amount.
Background technology
The last line of defense that low-frequency low-voltage load shedding is controlled automatically as safety and stability, is intended to prevent extreme caseUnder (comprising extreme large load, rare multiple failure etc.) system crash, reduce the power failure of electrical network as far as possibleScale and power off time, ensure the power supply of important load.
Power scheduling department can be according to the power system operation level in former years, and annual rolling repaiied the low frequency of compiling electrical networkLow pressure off-load allocation plan, its concrete grammar is, (many by suitably configuring stability control device in relevant plant standStability control device, except configuring conventional Transient Stability Control function, has also configured low-frequency low-voltage load shedding function),The automatic safety devices such as low-frequency low-voltage load shedding device, and formulate low-frequency low-voltage load shedding plan according to Calculation resultsSlightly. Low-frequency low-voltage load shedding allocation plan pre-establishes according to overall operation of power networks situation, the peace involvingFull-automatic device, corresponding fair of the circuit of loading in automatic safety device hob whether plate drops into, the circuit of loadingExcision priority, the real-time change of the load power in electrical network, all can have influence on the each round of low-frequency and low-voltageWhole off-load effect, occurs under current power system operating mode if be necessary to provide a kind of mode to carry out real-time analysisWhen fault causes electrical network generation low-frequency low-voltage load shedding situation, the automatic safety device of each department excision load is totalWhether amount, meet control centre to the amount of assigning in low-frequency low-voltage load shedding allocation plan to monitor.
Summary of the invention
The object of the present invention is to provide a kind of analytical method and system of low-frequency and low-voltage cutting load total amount.
Object of the present invention is achieved through the following technical solutions:
An analytical method for low-frequency and low-voltage cutting load total amount, comprises the steps:
Obtain definite value information, intake information, the electric parameters information on selected stability control device, sent;
Determine respectively described selected according to described definite value information, described intake information, described electric parameters informationThe interruptable power value of each load circuit of stability control device;
Determine respectively the priority of each described load circuit according to described definite value information, and respectively according to described canCut performance number and described priority determine described selected stability control device each priority can cutting load amount;
Respectively according to first of described each round of can cutting load amount determining described selected stability control device real cut negativeLotus amount;
Travel through the each stability control device in region to be analyzed, the first reality that obtains each round of each stability control device is cut negativeLotus amount, and determine each round in region to be analyzed according to first of each round of each stability control device the real cutting load amountThe first real cutting load total amount;
Second of each round of the each low-frequency low-voltage load shedding device from region to be analyzed described in EMS system acquisitionReal cutting load amount, determines each round second real in described region to be analyzed according to described the second real cutting load amountCutting load total amount;
Described in determining respectively according to described the first real cutting load total amount and described the second real cutting load total amount, treat pointAnalyse the total real amount of cutting of low-frequency and low-voltage cutting load of each round of region.
An analytical system for low-frequency and low-voltage cutting load total amount, comprising:
Acquisition module, for obtaining definite value information, the intake information, electric sent on selected stability control deviceAmount information, and each round of each low-frequency low-voltage load shedding device from region to be analyzed described in EMS system acquisitionThe second real cutting load amount;
Line load processing module, for respectively according to described definite value information, described intake information, described inElectric parameters information is determined the interruptable power value of each load circuit of described selected stability control device;
Priority load processing module, for determining each described load circuit according to described definite value information respectivelyPriority, and determine described selected stability control device according to described interruptable power value and described priority respectivelyEach priority can cutting load amount;
The first round load processing module, for respectively according to described can cutting load amount determine described selected steadyThe first real cutting load amount of each round of control device, travels through the each stability control device in region to be analyzed, obtains eachThe first real cutting load amount of each round of stability control device, and according to first of each round of each stability control device the real cuttingLoad is determined the first real cutting load total amount of each round in region to be analyzed;
The second round load processing module, for determining described district to be analyzed according to described the second real cutting load amountThe second real cutting load total amount of each round in territory;
Analysis module, for dividing according to described the first real cutting load total amount and described the second real cutting load total amountThe total real amount of cutting of low-frequency and low-voltage cutting load that Que Ding each round of described region to be analyzed.
According to the scheme of the invention described above, its be according to the definite value information of sending on stability control device, intake information,Electric parameters information is determined the first real cutting load total amount of each round in region to be analyzed, and according to from EMS systemObtaining the second real cutting load amount of each round of the each low-frequency low-voltage load shedding device in described region to be analyzed determinesThe second real cutting load total amount of each round in described region to be analyzed, then according to this first real cutting load total amount withAnd this second real cutting load total amount determines that respectively the low-frequency and low-voltage cutting load of each round of described region to be analyzed is totalThe in fact amount of cutting, the total real amount of cutting of this low-frequency and low-voltage cutting load can subtract low-frequency and low-voltage for whether meeting control centreCarry the amount of assigning in allocation plan, can before the real action of automatic safety device low-frequency low-voltage load shedding measure, uniteLow-frequency and low-voltage cutting load total amount while counting out the each round off-load action of regional power grid generation is management and running personnelReasonable arrangement needs cutting load amount and adjusts in time Emergency Control Strategy to provide basis for estimation, to improve load monitoring effectReally.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the analytical method embodiment of low-frequency and low-voltage cutting load total amount of the present invention;
Fig. 2 is step S102 in Fig. 1 refinement schematic flow sheet in an embodiment therein;
Fig. 3 is step S104 in Fig. 1 refinement schematic flow sheet in an embodiment therein;
Fig. 4 is the structural representation of an embodiment of the system of low-frequency and low-voltage cutting load total amount of the present invention;
Fig. 5 is line load processing module in Fig. 4 refined structure schematic diagram in an embodiment therein;
Fig. 6 is the structural representation of another embodiment of the system of low-frequency and low-voltage cutting load total amount of the present invention.
Detailed description of the invention
For making object of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcementExample, is described in further detail the present invention. Should be appreciated that detailed description of the invention described hereinOnly, in order to explain the present invention, do not limit protection scope of the present invention.
In following explanation, first say for the embodiment of the analytical method of low-frequency and low-voltage cutting load total amountBright, more each embodiment of analytical system to low-frequency and low-voltage cutting load total amount of the present invention describes.
Shown in Figure 1, be the flow process of the analytical method embodiment of low-frequency and low-voltage cutting load total amount of the present inventionSchematic diagram. As shown in Figure 1, the analytical method of the low-frequency and low-voltage cutting load total amount in the present embodiment comprises as followsStep:
Step S101: obtain the definite value information, intake information, the electric parameters letter that send on selected stability control deviceBreath;
Can be real-time from stability control device management system obtain described definite value information, intake information, electricAmount information;
Each selected stability control device, execution step S101～step S104;
Step S102: true according to described definite value information, described intake information, described electric parameters information respectivelyThe interruptable power value of each load circuit of fixed described selected stability control device;
Usually, first in the definite value of selected stability control device, search that each " * * load line name is pressed preferential frequentlyLevel " be the definite value of feature string, the line name of will " * * load line name " conduct loading, to distinguishEach load circuit of selected stability control device, more respectively according to described definite value information, described intake information,Described electric parameters information is determined the interruptable power value of each load circuit, and wherein, " * * " represents load line name;
Particularly, as shown in Figure 2, the interruptable power value of each described load circuit can be true in the following wayFixed:
Step S201: the power that puts into operation of determining selected load circuit according to described definite value information;
Can select a load circuit according to load line name, then search this load from described definite value informationThe power that puts into operation of circuit;
Step S202: pressing plate state is moved back in the throwing of determining described selected load circuit according to described intake information;
From described intake information, search " the fair plate that hobs of * * load line name ", should " * * load circuit nameClaiming to permit and hob plate " throwing that characterizes this load circuit of corresponding value moves back pressing plate state, wherein, if value is 1, showsThe throwing that is shown this load circuit is moved back pressing plate state for putting into operation, if value is 0, the throwing that is expressed as this load circuit is moved backIf putting into operation, exits pressing plate state;
Step S203: the real-time active power of determining described selected load circuit according to described electric parameters information;
From described electric parameters information, search " * * load circuit name P ", be somebody's turn to do " * * load circuit name P "Corresponding value is the real-time active power of this load circuit;
Step S204: whether the real-time active power that judges described selected load circuit is greater than this load circuitThe power that puts into operation, judge whether pressing plate state is moved back in described throwing is input, judge described selected load circuitWhether active power and the power that puts into operation are all greater than 0 in real time, if the real-time wattful power of described selected load circuitRate is greater than the power that puts into operation of this load circuit, described throwing, and to move back pressing plate state be to drop into and described selected loadThe real-time active power of circuit and the power that puts into operation are all greater than 0, enter step S205, if described selectedThe real-time active power of load circuit is not more than the power that puts into operation of this load circuit, described throwing is moved back pressing plate state and isExit or the real-time active power of described selected load circuit and the power that puts into operation are not to be all greater than 0,Enter step S206;
Step S205: be the cut merit of this load circuit by the power determination that puts into operation of described selected load circuitRate value;
Step S206: be 0 by the power determination that puts into operation of described selected load circuit;
Above-mentioned steps S201～step S206 is carried out in circulation, until each institute of the stability control device of traversal current selectedState load circuit, to obtain the interruptable power value of each described load circuit, therefore, after step S206, go backCan comprise step: judge whether to travel through the each described load circuit of described selected stability control device, if so,Enter step S103, if not, after a selected load circuit, return to step S201;
Step S103: determine respectively the priority of each described load circuit according to described definite value information, and respectivelyDetermine according to described interruptable power value and described priority described selected stability control device each priority canCutting load amount;
As previously mentioned, can in described definite value information, search " * * load line name is pressed priority frequently " withDetermine the priority of each described load circuit, wherein, totally 16 grades of the priority of load circuit, are respectively the 1stPriority, the 2nd priority, the 3rd priority ... the 16th priority, the 1st priority is limit priority,Excision at first, the 16th priority is lowest priority, finally excision;
The interruptable power value of the load circuit of different priorities can be classified as to different set, then calculate respectivelyElement in each set and value, can obtain described selected stability control device each priority cut negativeLotus amount, for example, priority is that the load circuit of the 5th priority has 4 articles, these 4 load the cutting of circuitsPerformance number is respectively Prt1、Prt2、Prt3、Prt4, priority be the 5th priority can cutting load amount bePrt1+Prt2+Prt3+Prt4；
Step S104: respectively according to described each round of can cutting load amount determining described selected stability control deviceThe first real cutting load amount;
Wherein, the round in electrical network comprises that low frequency takes turns 1-7 wheel, the special 1-2 of the wheel wheel of low frequency, low frequency spy substantiallyA/B wheel, low pressure are taken turns 1-2 wheel substantially, the special 1-2 wheel of taking turns of low pressure;
Particularly, as shown in Figure 3, can cutting load amount determine described selected stability control device according to described respectivelyThe first real cutting load amount of each round can comprise the steps:
Step S301: calculate the next stage of last round of corresponding lowest priority to upper one of target priorityLevel can cutting load amount first and value;
For the first round, owing to not having last round of time, directly the 1st priority is defaulted as last round of timeCorresponding lowest priority;
Target priority can be identical with last round of inferior corresponding lowest priority;
If use Nn-1Represent last round of time corresponding lowest priority, corresponding the, Nn-1+ 1 last round of time of expression is rightThe next stage of the lowest priority of answering, NtRepresent target priority, correspondingly, Nt-1 represents target priorityUpper level, first and value for Nn-1+1～NtEach priority of-1 can cutting load amount and value;
Step S302: next stage the cutting to target priority of calculating last round of corresponding lowest prioritySecond and value of load;
Second is N with being worthn-1+1～NtEach priority can cutting load amount and value,
Step S303: the cutting load amount definite value of determining current round according to described definite value information;
The cutting load amount definite value of current round can be searched from described definite value information, but due to from definite value informationIn the basic wheel the 1st that finds take turns the not necessarily basic wheel the 1st of the round of electrical network and take turns, thereby also need intoRoad wheel time coupling, for this reason, therein in an embodiment, determines current round according to described definite value informationCutting load amount definite value can comprise step: right according to pre-stored round and frequency/voltage and time delay valueShould be related to the frequency/voltage and the time delay value that obtain current round; According to the frequency of the described current round obtaining/Voltage and time delay value, described definite value information are determined the cutting load amount definite value of current round;
Wherein, the corresponding relation of round and frequency/voltage and time delay value is as shown in table 1, visible different wheelThe frequency/voltage of inferior correspondence or time delay value are different, can obtain current round according to this corresponding relationFrequency/voltage and time delay value, and then from described definite value information, search and the frequency/voltage of current roundAnd the cutting load amount definite value of the identical round of time delay value;
Step S304: judge whether described cutting load amount definite value is greater than described first with value and is less than or equal toDescribed second and value, if so, enter step S305;
Table 1 electrical network round operating frequency/voltage, time delay table:
In other words from Nn-1+ 1 starts to add up successively, and whether following two conditions of each cumulative judgement afterwardsSet up simultaneously;
Nn-1+1～Nt-1 can cutting load amount definite value cutting load amount and the current round of <;
Nn-1+1～Nt-1 can cutting load amount and >=the cutting load amount definite value of current round;
If set up, enter step S305 simultaneously;
Step S305: the first real cutting load amount of current round equals described second and value;
Now, the lowest priority that current target priority is current round;
For the ease of understanding this process, below the present embodiment is described in detail:
Excision principle: the load circuit that priority is high is first cut, and all load circuits of same priority are wantedCut with regard to complete resection;
By can cutting load amount entering successively from the 1st priority to the 16 priority of each priority (1-16)Row is cumulative, judges whether to meet following two conditions after each adding up simultaneously:
1～(N1-1) priority can substantially take turns the 1st cutting load amount definite value of taking turns by cutting load rate sum <;
1～N1Priority can cutting load rate sum >=substantially take turns the 1st cutting load amount definite value of taking turns;
If satisfy condition simultaneously, 1～N1Priority can cutting load rate sum be basic wheel the 1st take turns firstReal cutting load amount, N1For basic wheel the 1st is taken turns corresponding lowest priority;
Take turns generation if substantially take turns the 1st, substantially take turns the 1st first real cutting load amount=1～N taking turns1PriorityCan cutting load amount sum, N1For lowest priority corresponding to the first real cutting load amount of the basic wheel first round;
After determining basic wheel the 1st first real cutting load amount of taking turns, from N1Priority to the 16 priorityAdd up successively, after each adding up, judge whether to meet following two conditions simultaneously:
(N1+1)～(N2-1) priority can substantially take turns the 2nd cutting load amount definite value of taking turns by cutting load rate sum <;
(N1+1)～N2Priority can cutting load rate sum >=substantially take turns the 2nd cutting load amount definite value of taking turns;
If satisfy condition simultaneously, (N1+1)～N2Priority can cutting load rate sum be that basic wheel the 2nd is taken turnsThe first real cutting load amount, N2For basic wheel the 1st is taken turns corresponding lowest priority;
By that analogy, take turns until complete basic wheel 7, the special calculating of taking turns the 2 first real cutting load amounts of taking turns,Wherein, substantially take turns the 7th take turns for special take turns the 1st take turns last round of time, the basic wheel the 1st in this algorithm is taken turns canTo be that frequency is substantially taken turns the 1st and taken turns, can be also that voltage is substantially taken turns the 1st and taken turns, other rounds are similar, at this notGive and repeating;
The shared all of special A wheel, special B wheel and " basic wheel and special wheel " can cutting load circuit,Computational methods and the basic wheel first round and second take turns identical, do not repeat them here;
Above-mentioned steps S101～step S104 is carried out in circulation, until travel through the each steady control in described region to be analyzedDevice, to obtain the first real cutting load of each round of each stability control device, therefore, step S104 after and alsoCan comprise step: judge whether to travel through the each stability control device in described region to be analyzed, if so, enterEnter step S105, if not, after a selected load circuit, return to step S101;
Step S105: determine region to be analyzed according to first of each round of the each stability control device real cutting load amountThe first real cutting load total amount of each round;
Respectively by the real cutting load amount of each stability control device of the same round of correspondence
Step S106: the each low-frequency low-voltage load shedding device from region to be analyzed described in EMS system acquisition eachThe second real cutting load amount of round, determines each wheel in described region to be analyzed according to described the second real cutting load amountThe second inferior real cutting load total amount;
Respectively the second real cutting load amount of the low-frequency low-voltage load shedding device of same round is added, obtains instituteState the second real cutting load total amount of each round in region to be analyzed;
Step S107: true respectively according to described the first real cutting load total amount and described the second real cutting load total amountThe total real amount of cutting of low-frequency and low-voltage cutting load of each round of fixed described region to be analyzed;
Respectively the first real cutting load total amount of same round, the second real cutting load total amount are added and sue for peaceTo the total real amount of cutting of low-frequency and low-voltage cutting load of each round of described region to be analyzed.
Accordingly, according to the scheme in above-mentioned the present embodiment, its be according to the definite value information of sending on stability control device,Intake information, electric parameters information are determined the first real cutting load total amount of each round in region to be analyzed, and rootSecond real according to each round of the each low-frequency low-voltage load shedding device from region to be analyzed described in EMS system acquisitionCutting load amount is determined the second real cutting load total amount of each round in described region to be analyzed, then according to this first realityCutting load total amount and this second real cutting load total amount are determined respectively the low frequency of each round of described region to be analyzedThe total real amount of cutting of low pressure cutting load, whether the total real amount of cutting of this low-frequency and low-voltage cutting load can be for meeting control centreTo the amount of assigning in low-frequency low-voltage load shedding allocation plan, can be in the measure of automatic safety device low-frequency low-voltage load sheddingLow-frequency and low-voltage cutting load total amount while counting the each round off-load action of regional power grid generation before real action, forManagement and running personnel reasonable arrangement needs cutting load amount and adjusts in time Emergency Control Strategy to provide basis for estimation, to carryHigh load capacity monitoring effect.
After having determined current-carrying capacity of cable, power scheduling department can cut negative according to the low-frequency and low-voltage of gainedThe total real amount of cutting of lotus is carried out the monitoring to low-frequency and low-voltage cutting load situation and carries out relevant control. For example, monitoringWhether the total real amount of cutting of low-frequency and low-voltage cutting load of automatic safety device meets control centre is joined low-frequency low-voltage load sheddingPut the amount of assigning in scheme, and can need cutting load amount and adjust and cut in time for management and running personnel reasonable arrangementLoad strategy provides basis for estimation, will not add to repeat at this.
For the ease of the understanding of the low-frequency and low-voltage cutting load situation of dispatcher's instantaneous safety automatics, ensurePower grid security in an embodiment, can also comprise step: obtain therein after above-mentioned step S107The low-frequency and low-voltage cutting load of getting each round in region to be analyzed always need the amount of cutting; By described low-frequency and low-voltage cutting loadAlways need the amount of cutting compare with the total real amount of cutting of described low-frequency and low-voltage cutting load, judge respectively the low frequency of each roundWhether the total real amount of cutting of low pressure cutting load meets regulation index;
If the low frequency that the total real amount of cutting of the low-frequency and low-voltage cutting load of current round is all greater than or equal to current round is lowCrush-cutting load always need the amount of cutting, and the low-frequency and low-voltage cutting load of current round always need the amount of cutting meet regulation index, itsIn, low-frequency and low-voltage cutting load always need the amount of cutting refer to the amount of assigning in low-frequency low-voltage load shedding allocation plan.
According to the analytical method of the low-frequency and low-voltage cutting load total amount of the invention described above, it is a kind of low that the present invention also providesFrequently the analytical system of low pressure cutting load total amount, below with regard to the total quantitative analysis of low-frequency and low-voltage cutting load of the present invention systemThe embodiment of system is elaborated. The total quantitative analysis of low-frequency and low-voltage cutting load of the present invention has been shown in Fig. 4The structural representation of the embodiment of system. For convenience of explanation, in Fig. 4, only show related to the present inventionPart.
As shown in Figure 4, the system of the total quantitative analysis of a kind of low-frequency and low-voltage cutting load, it comprise acquisition module 401,Line load processing module 402, priority load processing module 403, the first round load processing module 404,The second round load processing module 405, analysis module 406, wherein:
Acquisition module 401, for obtaining the definite value information, intake information, the electricity that send on selected stability control deviceTolerance information, and each wheel of each low-frequency low-voltage load shedding device from region to be analyzed described in EMS system acquisitionThe second inferior real cutting load amount;
Line load processing module 402, for respectively according to described definite value information, described intake information, instituteState electric parameters information and determine the interruptable power value of each load circuit of described selected stability control device;
Priority load processing module 403, for determining each described load circuit according to described definite value information respectivelyPriority, and determine described selected steady control dress according to described interruptable power value and described priority respectivelyEach priority of putting can cutting load amount;
The first round load processing module 404, for can cutting load amount determining described selected according to described respectivelyThe first real cutting load amount of each round of stability control device, travels through the each stability control device in region to be analyzed, obtainsThe first real cutting load amount of each round of each stability control device, and real according to first of each round of each stability control deviceCutting load amount is determined the first real cutting load total amount of each round in region to be analyzed;
The second round load processing module 405, for determining described to be analyzed according to described the second real cutting load amountThe second real cutting load total amount of each round in region;
Analysis module 406, for according to described the first real cutting load total amount and described the second real cutting load total amountDetermine respectively the total real amount of cutting of low-frequency and low-voltage cutting load of each round of described region to be analyzed.
In an embodiment, as shown in Figure 5, line load processing module 402 can comprise therein:
Processing unit 501, for determining the power that puts into operation of selected load circuit, root according to described definite value informationDetermine that according to described intake information the throwing of described selected load circuit moves back pressing plate state, according to described electric parametersInformation is determined the real-time active power of described selected load circuit;
Whether the first judging unit 502, be greater than for the real-time active power that judges described selected load circuitThe power that puts into operation of this load circuit;
Whether the second judging unit 503 is input for judging that pressing plate state is moved back in described throwing;
The 3rd judging unit 504, for judging the real-time active power of described selected load circuit and putting into operationWhether power is all greater than 0;
Line power determining unit 505, at the first judging unit 502, the second judging unit 503,The result of determination of three judging units 504 is while being, by the power determination that puts into operation of described selected load circuitFor the interruptable power value of this load circuit, at the first judging unit 502, the second judging unit 503, the 3rdAny one in judging unit 504 or multiple result of determination are when no, by described selected loadThe power determination that puts into operation of circuit is 0.
In an embodiment, the first round load processing module 404 can be calculated correspondence last round of time thereinLowest priority next stage to the upper level of target priority can cutting load amount first and value, calculateThe next stage of last round of time corresponding lowest priority to target priority can cutting load amount second and be worth;Determine the cutting load amount definite value of current round according to described definite value; Judge whether described cutting load amount definite value is greater thanDescribed first and value be less than or equal to described second and value; If so, first of current round the real cutting loadAmount equals described second and value.
Therein in an embodiment, the first round load processing module 404 according to pre-stored round withThe corresponding relation of frequency/voltage and time delay value obtains frequency/voltage and the time delay value of current round, according to instituteState the frequency/voltage of the current round obtaining and time delay value, described definite value information determines that cutting of current round is negativeLotus amount definite value.
In an embodiment, as shown in Figure 6, the analytical system of low-frequency and low-voltage cutting load total amount, goes back thereinCan comprise:
Comparison module 408, always needs for the low-frequency and low-voltage cutting load of each round of obtaining described region to be analyzedThe amount of cutting, always need the amount of cutting compare described low-frequency and low-voltage cutting load with the total real amount of cutting of described low-frequency and low-voltage cutting loadWhether the total real amount of cutting of low-frequency and low-voltage cutting load of judging, respectively each round meets regulation index.
The analytical system of low-frequency and low-voltage cutting load total amount of the present invention and low-frequency and low-voltage cutting load total amount of the present inventionAnalytical method corresponding one by one, set forth at the embodiment of the analytical method of above-mentioned low-frequency and low-voltage cutting load total amountTechnical characterictic and beneficial effect thereof are all applicable in the embodiment of analytical system of low-frequency and low-voltage cutting load total amount,Statement hereby.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed,But can not therefore be interpreted as the restriction to the scope of the claims of the present invention. It should be pointed out that for this areaThose of ordinary skill, without departing from the inventive concept of the premise, can also make some distortion andImprove, these all belong to protection scope of the present invention. Therefore, the protection domain of patent of the present invention should be with appendedClaim is as the criterion.
Claims (10)
1. an analytical method for low-frequency and low-voltage cutting load total amount, is characterized in that, comprises the steps:
Obtain definite value information, intake information, the electric parameters information on selected stability control device, sent;
Determine respectively described selected according to described definite value information, described intake information, described electric parameters informationThe interruptable power value of each load circuit of stability control device;
Determine respectively the priority of each described load circuit according to described definite value information, and respectively according to described canCut performance number and described priority determine described selected stability control device each priority can cutting load amount;
Respectively according to first of described each round of can cutting load amount determining described selected stability control device real cut negativeLotus amount;
Travel through the each stability control device in region to be analyzed, the first reality that obtains each round of each stability control device is cut negativeLotus amount, and determine each round in region to be analyzed according to first of each round of each stability control device the real cutting load amountThe first real cutting load total amount;
Second of each round of the each low-frequency low-voltage load shedding device from region to be analyzed described in EMS system acquisitionReal cutting load amount, determines each round second real in described region to be analyzed according to described the second real cutting load amountCutting load total amount;
Described in determining respectively according to described the first real cutting load total amount and described the second real cutting load total amount, treat pointAnalyse the total real amount of cutting of low-frequency and low-voltage cutting load of each round of region.
2. the analytical method of low-frequency and low-voltage cutting load total amount according to claim 1, is characterized in that,Described determine according to described definite value information, described intake information, described electric parameters information respectively described selectedThe interruptable power value of each load circuit of stability control device comprise step:
Determine the power that puts into operation of selected load circuit according to described definite value information;
Determine that according to described intake information the throwing of described selected load circuit moves back pressing plate state;
Determine the real-time active power of described selected load circuit according to described electric parameters information;
Judge whether the real-time active power of described selected load circuit is greater than the merit that puts into operation of this load circuitRate, judges whether pressing plate state is moved back in described throwing is input, judges the meritorious in real time of described selected load circuitWhether power and the power that puts into operation are all greater than 0;
If the real-time active power of described selected load circuit be greater than this load circuit the power that puts into operation, described inThrowing move back pressing plate state be drop into and the real-time active power of described selected load circuit and the power that puts into operation equalBeing greater than 0, is the interruptable power value of this load circuit by the power determination that puts into operation of described selected load circuit;
If the real-time active power of described selected load circuit is not more than the power that puts into operation, the institute of this load circuitState and throw that to move back pressing plate state be to exit or the real-time active power of described selected load circuit and the merit that puts into operationRate is not to be all greater than 0, is 0 by the power determination that puts into operation of described selected load circuit;
Travel through each described load circuit, obtain the interruptable power value of each described load circuit.
3. the analytical method of low-frequency and low-voltage cutting load total amount according to claim 1, is characterized in that,Described respectively according to first of described each round of can cutting load amount determining described selected stability control device real cut negativeLotus amount comprises step:
The next stage that calculates last round of time corresponding lowest priority is negative to cutting of the upper level of target priorityFirst and value of lotus amount, the next stage that calculates last round of time corresponding lowest priority to target priority canSecond and value of cutting load amount;
Determine the cutting load amount definite value of current round according to described definite value;
Judge whether described cutting load amount definite value is greater than described first with value and is less than or equal to described the second HeValue;
If so, first of current round the real cutting load amount equals described second and value.
4. the analytical method of low-frequency and low-voltage cutting load total amount according to claim 3, is characterized in that,Described respectively according to first of described each round of can cutting load amount determining described selected stability control device real cut negativeLotus amount comprises step:
Obtain the frequency of current round according to the corresponding relation of pre-stored round and frequency/voltage and time delay valueRate/voltage and time delay value;
Determine current according to the frequency/voltage of the described current round obtaining and time delay value, described definite value informationThe cutting load amount definite value of round.
5. according to the analytical method of the low-frequency and low-voltage cutting load total amount one of claim 1 to 4 Suo Shu, its spyLevy and be, also comprise step:
The low-frequency and low-voltage cutting load that obtains each round in described region to be analyzed always need the amount of cutting;
Described low-frequency and low-voltage cutting load always need the amount of cutting be compared with the total real amount of cutting of described low-frequency and low-voltage cutting loadWhether the total real amount of cutting of low-frequency and low-voltage cutting load of judging, respectively each round meets regulation index.
6. an analytical system for low-frequency and low-voltage cutting load total amount, is characterized in that, comprising:
Acquisition module, for obtaining definite value information, the intake information, electric sent on selected stability control deviceAmount information, and each round of each low-frequency low-voltage load shedding device from EMS system acquisition region to be analyzedTwo real cutting load amounts;
Line load processing module, for respectively according to described definite value information, described intake information, described inElectric parameters information is determined the interruptable power value of each load circuit of described selected stability control device;
Priority load processing module, for determining each described load circuit according to described definite value information respectivelyPriority, and determine described selected stability control device according to described interruptable power value and described priority respectivelyEach priority can cutting load amount;
The first round load processing module, for respectively according to described can cutting load amount determine described selected steadyThe first real cutting load amount of each round of control device, travels through the each stability control device in region to be analyzed, obtains eachThe first real cutting load amount of each round of stability control device, and according to first of each round of each stability control device the real cuttingLoad is determined the first real cutting load total amount of each round in region to be analyzed;
The second round load processing module, for determining described district to be analyzed according to described the second real cutting load amountThe second real cutting load total amount of each round in territory;
Analysis module, for dividing according to described the first real cutting load total amount and described the second real cutting load total amountThe total real amount of cutting of low-frequency and low-voltage cutting load that Que Ding each round of described region to be analyzed.
7. the analytical system of low-frequency and low-voltage cutting load total amount according to claim 6, is characterized in that,Described line load processing module comprises:
Processing unit, for determine the power that puts into operation of selected load circuit according to described definite value information, according toDescribed intake information determines that the throwing of described selected load circuit moves back pressing plate state, according to described electric parameters letterBreath is determined the real-time active power of described selected load circuit;
Whether the first judging unit, be greater than this for the real-time active power that judges described selected load circuitThe power that puts into operation of load circuit;
Whether the second judging unit is input for judging that pressing plate state is moved back in described throwing;
The 3rd judging unit, for judging the real-time active power of described selected load circuit and the merit that puts into operationWhether rate is all greater than 0;
Line power determining unit, for described the first judging unit, described the second judging unit, described inThe result of determination of the 3rd judging unit is while being, by the power determination that puts into operation of described selected load circuit isThe interruptable power value of this load circuit, at described the first judging unit, described the second judging unit, describedAny one in three judging units or multiple result of determination are when no, by described selected load lineThe power determination that puts into operation on road is 0.
8. the analytical system of low-frequency and low-voltage cutting load total amount according to claim 6, is characterized in that:
The next stage that described the first round load processing module is calculated last round of corresponding lowest priority is to orderThe upper level of mark priority can cutting load amount first and value, calculate corresponding lowest priority last round of timeNext stage to target priority can cutting load amount second and value; Determine current round according to described definite valueCutting load amount definite value; Judge described cutting load amount definite value whether be greater than described first and value and be less than or etc.In described second and value; If so, first of current round the real cutting load amount equals described second and value.
9. the analytical system of low-frequency and low-voltage cutting load total amount according to claim 8, is characterized in that:
Described the first round load processing module is according to pre-stored round and frequency/voltage and time delay valueCorresponding relation obtains frequency/voltage and the time delay value of current round, according to the frequency of the described current round obtainingRate/voltage and time delay value, described definite value information are determined the cutting load amount definite value of current round.
10. according to the analytical system of the low-frequency and low-voltage cutting load total amount one of claim 6 to 9 Suo Shu, itsBe characterised in that, also comprise:
Comparison module, always need cut for the low-frequency and low-voltage cutting load of each round of obtaining described region to be analyzedAmount, always need the amount of cutting compare described low-frequency and low-voltage cutting load with the total real amount of cutting of described low-frequency and low-voltage cutting load,Whether the total real amount of cutting of low-frequency and low-voltage cutting load of judging respectively each round meets regulation index.
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| CN105656177B (en) * | 2016-03-02 | 2018-05-18 | 东方电子股份有限公司 | A kind of optimal throwing annealing method of prepared auto restart pressing plate checked based on minute wheel time |
| CN106340906A (en) * | 2016-09-20 | 2017-01-18 | 国网福建省电力有限公司 | AC and DC system low voltage load shedding optimization method based on improved genetic algorithm |
| CN109687528B (en) * | 2018-11-16 | 2022-04-01 | 国电南瑞科技股份有限公司 | High-circumference cutting machine line-cutting-prevention quantity-cutting statistical method based on structured modeling |
| CN112769123B (en) * | 2019-11-01 | 2022-07-22 | 南京南瑞继保电气有限公司 | Actual measurement method and device for source-network-load accurate control system |
| CN111355244A (en) * | 2020-04-07 | 2020-06-30 | 国网宁夏电力有限公司 | Low-frequency low-voltage load reduction implementation evaluation method and device based on structured modeling |
| CN112072671A (en) * | 2020-08-14 | 2020-12-11 | 深圳供电局有限公司 | Low-frequency load reduction method and system, computer equipment and storage medium |
| CN113690897A (en) * | 2021-08-04 | 2021-11-23 | 国电南瑞科技股份有限公司 | Method and system for online dynamic optimization adjustment of low-frequency load shedding control objects in each turn |
| CN113657032B (en) * | 2021-08-12 | 2023-11-24 | 国网安徽省电力有限公司 | Low-frequency load shedding method and system for pre-centralized coordination real-time distribution control |
| CN114362146B (en) * | 2021-12-07 | 2024-04-16 | 南方电网科学研究院有限责任公司 | Multi-region coordinated automatic off-network control strategy and device |
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