CN105207268A - Generator set automatic generation control function actuating state online optimization method - Google Patents
Generator set automatic generation control function actuating state online optimization method Download PDFInfo
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Abstract
The invention relates to a generator set automatic generation control function actuating state online optimization method which comprises the following steps: 1, processing basic data, comparing the actual regulation speed of a generator set with the actuated automatic generation control function with the target rate; 2, canceling the automatic generation control actuating state of a generator set which is not up to standard; 3, judging the automatic generation control regulation demand of the generator set with the actuated automatic generation control function; 4, selecting all current generator sets with unactuated automatic generation control function, sequencing according to the automatic generation control regulation speed within the past one month, and selecting one unselected generator set with the largest regulation speed; 5, assuming that the selected generator set has the actuated automatic generation control function, and performing fracture surface out-of-limit judgment; 6, judging the automatic generation control regulation demand of all the generator sets with the actuated automatic generation control function. The generator set automatic generation control function actuating state online optimization method solves the technical problems that hidden dangers exist in the real-time operation of the electric system, and the generator set is low in operation efficiency.
Description
Technical field
The invention belongs to electric power system power scheduling and run field, particularly relate to a kind of generating set automatic generation control function and drop into state method for on-line optimization.
Background technology
Automatic generation control is the important step in electric power system power scheduling, its effect is within the scope of the time scale that the control time is no more than 10 minutes, deviation is exchanged according to power system frequency interconnection, automatic regulator generator group is exerted oneself, and meets power system frequency interconnection and exchanges deviation regulation and control requirement.Only have when the automatic generation control function of generating set is in input state, just can respond the control overflow of automatic electricity generation control system.Whether the outer generating set automatic generation control function of Present Domestic drops into, and is all to be ordered to perform by power scheduling person on duty.Generating set automatic generation control function drops into state not only directly affects unit operation operating mode, deviation effects is exchanged to power system frequency interconnection huge simultaneously, when generating set automatic generation control function input State assignment is unreasonable, not only affect generating set efficiency, bulk power grid running medium frequency interconnection may be caused simultaneously to exchange deviation adjusting response not in time, cause bulk power grid serious accident.
But how power scheduling person on duty determines that the automatic generation control function of which generating set drops into it according to then there is bigger difference.
Under the Power Market of external advanced person, such as U.S. PJM electricity market, the input of generating set automatic generation control function is determined by its market quotes, power dispatching station is by the automatic generation control regulatory demand of real-time release subsequent time, each generating set is offered according to its actual operating mode, by considering automatic generation control regulatory demand and generating set quotation as a whole, power scheduling person on duty formulates generating set automatic generation control function and drops into state assignment plan.If generating set automatic generation control regulations speed does not reach electric power system standard, then it is examined.Coherent reference data is shown in PJM electricity market handbook, the domestic relevant regulations code generating set automatic generation control not being dropped into state at present, whether generating set automatic generation control function drops into, complete in the judgement of power dispatching station dispatcher artificial experience at present, lacks relevant code and supports.The on-line monitoring to generating set automatic generation control regulations speed is achieved at present by means of only assistant service management evaluation system.This system can realize providing evaluation with Fixed Time Interval (being generally 15 minutes at present) to its regulations speed of generating set automatic generation control function being in input state, judges that whether it is up to standard, sorts to its automatic generation control regulations speed.
Situation is realized both at home and abroad from above-mentioned, the external simple generating set automatic generation control input state optimization method considering generating set quotation, only pursue maximization of economic benefit, and do not consider whether the actual operating mode of generating set can meet the requirement of electric power system actual motion, for electric power system real time execution hides some dangers for.In time occurring that a large amount of generating set automatic generation control regulations speed and real automatic generation control pondage can not meet the requirements of, frequency may be caused out of control, cause electric power system serious accident.
And domestic owing to lacking relevant regulations stipulate, in practical implementation, power dispatching station dispatcher often lacks strong in supporting.For ensureing that power system operation is normal, and a large amount of generating set automatic generation control function dropped into, well beyond electric power system real demand, in fact greatly have impact on generating set normally runs, and reduces generating set operational efficiency.
Summary of the invention
The technical problem to be solved in the present invention: provide a kind of generating set automatic generation control function to drop into state method for on-line optimization, the simple generating set automatic generation control input state optimization method considering generating set quotation is dropped into the automatic generation control function solving generating set in prior art, only pursue maximization of economic benefit, and do not consider whether the actual operating mode of generating set can meet the requirement of electric power system actual motion, for electric power system real time execution hides some dangers for, manually drop into according to dispatcher and have impact on generating set and normally run, reduce the technical problems such as generating set operational efficiency.
Technical solution of the present invention:
A kind of generating set automatic generation control function drops into state method for on-line optimization, and it comprises:
Step 1, process basic data, compare the generating set practical adjustments speed and value up to standard that drop into automatic generation control function;
The input state of step 2, cancellation generating set automatic generation control not up to standard;
Step 3, the judgement of automatic generation control regulatory demand is carried out to the generating set dropping into automatic generation control function; Automatic generation control regulatory demand is satisfied then to be terminated, and does not meet and then performs step 4;
Step 4, choose the current all generating sets not dropping into automatic generation control function, sort according to automatic generation control regulations speed in past one month, choose maximum and be not selected the generating set of regulations speed;
Step 5, the generating set supposition not dropping into automatic generation control function step 4 chosen drop into automatic generation control function, and carry out the out-of-limit judgement of section, meet the out-of-limit control overflow of section, then perform step 6, do not meet and then return step 4;
Step 6, the judgement of automatic generation control regulatory demand is carried out to the generating set of all input automatic generation control functions, meet automatic generation control regulatory demand and then terminate, do not meet and then return step 4.
Process basic data described in step 1 to comprise:
Compare dropping into the generating set actual upper bound regulations speed of automatic generation control function and lower limit regulations speed and value up to standard, when upper limit regulations speed and lower limit regulations speed all exceed value up to standard, then this generating set automatic generation control function point analysis speed is up to standard; By do not drop into automatic generation control function generating set 1 month in the past in automatic generation control regulations speed mean value to it according to sorting in descending order; Calculating generator group automatic generation control pondage, generating set automatic generation control pondage=min{0; Generating set generation schedule-generating set automatic generation control function point analysis lower limit; The generating set automatic generation control function point analysis upper limit-generating set generation schedule; Past 1 month of generating set regulations speed mean value * 10 minutes }; After following 15 minutes, electric power system tide calculates, and according to generating set generation schedule and load prediction, calls flow calculation program, obtains following 15 minutes electric power system tides.
Carry out the judgement of automatic generation control regulatory demand to the generating set dropping into automatic generation control function described in step 3, its determining step comprises:
Step 3.1, calculating automatic generation control pondage, automatic generation control pondage equals the generating set automatic generation control capacity sum that all automatic generation control are in input state;
Step 3.2, when automatic generation control pondage is more than or equal to automatic generation control regulatory demand, then meet automatic generation control regulatory demand and then terminate; If automatic generation control pondage is less than automatic generation control regulatory demand, then do not meet automatic generation control regulatory demand, perform step 4.
Carry out the out-of-limit judgement of section described in step 5, its determination methods comprises:
Step 5.1, calculating section anticipation trend, described section anticipation trend comprises section and is just envisioning trend and section negative anticipation trend, and its computing formula is: section is just being envisioned trend=ground state trend+true amplitude * and shifted distribution factor; Section negative anticipation trend=ground state trend-negative amplitude * shifts distribution factor; Described true amplitude=min{ generating set automatic generation control function point analysis the upper limit-generating set generation schedule; Past 1 month of generating set regulations speed mean value * 10 minutes }; Described negative amplitude=min{ generating set generation schedule-generating set automatic generation control function point analysis lower limit; Past 1 month of generating set regulations speed mean value * 10 minutes };
Step 5.2, when the positive and negative anticipation trend of a certain section is all less than its section limit value, then this generating set drops into after automatic control function, meets the regulation and control requirement of this section; When all sections positive and negative anticipation trend all meet be less than its section limit value time, then this generating set automatic generation control function drop into meet the out-of-limit control overflow of section.
Carry out the judgement of automatic generation control regulatory demand to the generator of all input automatic generation control functions described in step 6, its determination methods comprises:
Step 6.1, calculating automatic generation control pondage, automatic generation control pondage=all automatic generation control functions are in generating set automatic generation control capacity sum+this generating set automatic generation control capacity of input state;
Step 6.2, automatic generation control pondage are more than or equal to automatic generation control regulatory demand, then satisfy the demands, then terminate; If automatic generation control pondage is less than automatic generation control regulatory demand, then do not satisfy the demands, return and perform step 3, until satisfy the demands.
Beneficial effect of the present invention:
The present invention has taken into full account generating set automatic generation control regulations speed and pondage, and the impact on electric power system control of section after considering generating set automatic generation control function input, core technology feature of the present invention is to take into full account generating set automatic generation control regulations speed situation up to standard, under generating set automatic generation control input state, two aspect constraints are affected on the regulation and control of power grid security section, reasonable establishment generating set automatic generation control drops into state, at utmost guarantee to meet electric power system automatic generation control regulatory demand on the one hand, ensure that frequency interties line exchanges bias adjustment requirement, consider that generating set automatic generation control affects safe operation of electric network on the other hand, ensure that section does not get over line, avoid the operating mode negative effect caused under a large amount of generating set automatic generation control function is in input state for a long time, flow process of the present invention is simple, realize easy, governing speed is quick, can be realized by computer automatic programming completely, dispatcher can not be increased and additionally adjust workload, practical, the automatic generation control function solving generating set in prior art drops into the simple generating set automatic generation control input state optimization method considering generating set quotation, only pursue maximization of economic benefit, and do not consider whether the actual operating mode of generating set can meet the requirement of electric power system actual motion, for electric power system real time execution hides some dangers for, manually drop into according to dispatcher and have impact on generating set and normally run, reduce the technical problems such as generating set operational efficiency.
Embodiment
The present invention take into full account generating set automatic generation control regulations speed, pondage and generating set automatic generation control drop into after impact on electric power system control of section, propose a kind of generating set automatic generation control function and drop into state method for on-line optimization, it realizes based on real-time performance monitoring sequence.Implementation step is as follows:
A kind of generating set automatic generation control function drops into state method for on-line optimization, and it comprises:
Step 1, process basic data, compare the generating set practical adjustments speed and value up to standard that drop into automatic generation control function;
Process basic data described in step 1 to comprise:
Compare dropping into the generating set actual upper bound regulations speed of automatic generation control function and lower limit regulations speed and value up to standard, when upper limit regulations speed and lower limit regulations speed all exceed value up to standard, then this generating set automatic generation control function point analysis speed is up to standard; By do not drop into automatic generation control function generating set 1 month in the past in automatic generation control regulations speed mean value to it according to sorting in descending order; Calculating generator group automatic generation control pondage, generating set automatic generation control pondage=min{0; Generating set generation schedule-generating set automatic generation control function point analysis lower limit; The generating set automatic generation control function point analysis upper limit-generating set generation schedule; Past 1 month of generating set regulations speed mean value * 10 minutes }; After following 15 minutes, electric power system tide calculates, and according to generating set generation schedule and load prediction, calls flow calculation program, obtains following 15 minutes electric power system tides.
Flow calculation program is electric power system fundamental analysis function, and the present invention repeats no more.Electric power system section tidal current now becomes ground state trend.
Its basic data source is in table 1.
The input state of step 2, cancellation generating set automatic generation control not up to standard; The automatic generation control function directly cancelling 15 minutes automatic generation control regulations speed generating sets not up to standard in the past drops into state.
Step 3, the judgement of automatic generation control regulatory demand is carried out to the generating set dropping into automatic generation control function; Automatic generation control regulatory demand is satisfied then to be terminated, and does not meet and then performs step 4;
Carry out the judgement of automatic generation control regulatory demand to the generating set dropping into automatic generation control function described in step 3, its determining step comprises:
Step 3.1, calculating automatic generation control pondage, automatic generation control pondage equals the generating set automatic generation control capacity sum that all automatic generation control are in input state;
Step 3.2, when automatic generation control pondage is more than or equal to automatic generation control regulatory demand, then meet automatic generation control regulatory demand, then optimization method of the present invention terminates; Wait for and call optimization method of the present invention next time, if automatic generation control pondage is less than automatic generation control regulatory demand, then do not meet automatic generation control regulatory demand, perform step 4.
Step 4, choose the current all generating sets not dropping into automatic generation control function, sort according to automatic generation control regulations speed in past one month, choose maximum and be not selected the generating set of regulations speed; In the inventive method implementation, first time chooses the maximum all generating sets not dropping into automatic generation control function of regulations speed, and second time chooses all generating sets not dropping into automatic generation control function of sequence second, the like.
Step 5, the generating set supposition not dropping into automatic generation control function step 4 chosen drop into automatic generation control function, and carry out the out-of-limit judgement of section, meet the out-of-limit control overflow of section, then perform step 6, do not meet and then return step 4;
Carry out the out-of-limit judgement of section described in step 5, its determination methods comprises:
Step 5.1, calculating section anticipation trend, after anticipation trend refers to that this generating set of hypothesis drops into automatic generation control function, go out at ground state Load flow calculation, when this generating set occur amplitude peak automatic generation control exert oneself adjustment after, electric power system control section new trend distribution.
Described section anticipation trend comprises section and is just envisioning trend and section negative anticipation trend, and its computing formula is: section is just being envisioned trend=ground state trend+true amplitude * and shifted distribution factor; Section negative anticipation trend=ground state trend-negative amplitude * shifts distribution factor; Described true amplitude=min{ generating set automatic generation control function point analysis the upper limit-generating set generation schedule; Past 1 month of generating set regulations speed mean value * 10 minutes }; Described negative amplitude=min{ generating set generation schedule-generating set automatic generation control function point analysis lower limit; Past 1 month of generating set regulations speed mean value * 10 minutes }; First need to calculate this generating set to exert oneself maximum possible adjusting range, after comprising true amplitude and negative amplitude; Calculate again and just envisioning trend and negative anticipation trend two kinds of situations.
Step 5.2, when the positive and negative anticipation trend of a certain section is all less than its section limit value, then this generating set drops into after automatic control function, meets the regulation and control requirement of this section; When all sections positive and negative anticipation trend all meet be less than its section limit value time, then this generating set automatic generation control function drop into meet the out-of-limit control overflow of section.
Step 6, the judgement of automatic generation control regulatory demand is carried out to the generator of all input automatic generation control functions, meet automatic generation control regulatory demand then optimization method of the present invention terminate; Wait for and call optimization method of the present invention next time, do not meet and then return step 4, again choose the generator that is not dropped into automatic generation control function
Carry out the judgement of automatic generation control regulatory demand to the generating set of all input automatic generation control functions described in step 6, its determination methods comprises:
Step 6.1, calculating automatic generation control pondage, automatic generation control pondage=all automatic generation control functions are in generating set automatic generation control capacity sum+this generating set automatic generation control capacity of input state;
Step 6.2, automatic generation control pondage are more than or equal to automatic generation control regulatory demand, then satisfy the demands, then optimization method of the present invention terminates; Wait for and call optimization method of the present invention next time; If automatic generation control pondage is less than automatic generation control regulatory demand, then do not satisfy the demands, return and perform step 3, until satisfy the demands.
Claims (5)
1. generating set automatic generation control function drops into a state method for on-line optimization, and it comprises:
Step 1, process basic data, compare the generating set practical adjustments speed and value up to standard that drop into automatic generation control function;
The input state of step 2, cancellation generating set automatic generation control not up to standard;
Step 3, the judgement of automatic generation control regulatory demand is carried out to the generating set dropping into automatic generation control function; Automatic generation control regulatory demand is satisfied then to be terminated, and does not meet and then performs step 4;
Step 4, choose the current all generating sets not dropping into automatic generation control function, sort according to automatic generation control regulations speed in past one month, choose maximum and be not selected the generating set of regulations speed;
Step 5, the generating set supposition not dropping into automatic generation control function step 4 chosen drop into automatic generation control function, and carry out the out-of-limit judgement of section, meet the out-of-limit control overflow of section, then perform step 6, do not meet and then return step 4;
Step 6, the judgement of automatic generation control regulatory demand is carried out to the generating set of all input automatic generation control functions, meet automatic generation control regulatory demand and then terminate, do not meet and then return step 4.
2. a kind of generating set automatic generation control function according to claim 1 drops into state method for on-line optimization, it is characterized in that: process basic data described in step 1 and comprise:
Compare dropping into the generating set actual upper bound regulations speed of automatic generation control function and lower limit regulations speed and value up to standard, when upper limit regulations speed and lower limit regulations speed all exceed value up to standard, then this generating set automatic generation control function point analysis speed is up to standard; By do not drop into automatic generation control function generating set 1 month in the past in automatic generation control regulations speed mean value to it according to sorting in descending order; Calculating generator group automatic generation control pondage, generating set automatic generation control pondage=min{0; Generating set generation schedule-generating set automatic generation control function point analysis lower limit; The generating set automatic generation control function point analysis upper limit-generating set generation schedule; Past 1 month of generating set regulations speed mean value * 10 minutes }; After following 15 minutes, electric power system tide calculates, and according to generating set generation schedule and load prediction, calls flow calculation program, obtains following 15 minutes electric power system tides.
3. a kind of generating set automatic generation control function according to claim 1 drops into state method for on-line optimization, it is characterized in that: carry out the judgement of automatic generation control regulatory demand to the generating set dropping into automatic generation control function described in step 3, its determining step comprises:
Step 3.1, calculating automatic generation control pondage, automatic generation control pondage equals the generating set automatic generation control capacity sum that all automatic generation control are in input state;
Step 3.2, when automatic generation control pondage is more than or equal to automatic generation control regulatory demand, then meet automatic generation control regulatory demand and then terminate; If automatic generation control pondage is less than automatic generation control regulatory demand, then do not meet automatic generation control regulatory demand, perform step 4.
4. a kind of generating set automatic generation control function according to claim 1 drops into state method for on-line optimization, it is characterized in that: carry out the out-of-limit judgement of section described in step 5, its determination methods comprises:
Step 5.1, calculating section anticipation trend, described section anticipation trend comprises section and is just envisioning trend and section negative anticipation trend, and its computing formula is: section is just being envisioned trend=ground state trend+true amplitude * and shifted distribution factor; Section negative anticipation trend=ground state trend-negative amplitude * shifts distribution factor; Described true amplitude=min{ generating set automatic generation control function point analysis the upper limit-generating set generation schedule; Past 1 month of generating set regulations speed mean value * 10 minutes }; Described negative amplitude=min{ generating set generation schedule-generating set automatic generation control function point analysis lower limit; Past 1 month of generating set regulations speed mean value * 10 minutes };
Step 5.2, when the positive and negative anticipation trend of a certain section is all less than its section limit value, then this generating set drops into after automatic control function, meets the regulation and control requirement of this section; When all sections positive and negative anticipation trend all meet be less than its section limit value time, then this generating set automatic generation control function drop into meet the out-of-limit control overflow of section.
5. a kind of generating set automatic generation control function according to claim 1 drops into state method for on-line optimization, it is characterized in that: carry out the judgement of automatic generation control regulatory demand to the generator of all input automatic generation control functions described in step 6, its determination methods comprises:
Step 6.1, calculating automatic generation control pondage, automatic generation control pondage=all automatic generation control functions are in generating set automatic generation control capacity sum+this generating set automatic generation control capacity of input state;
Step 6.2, automatic generation control pondage are more than or equal to automatic generation control regulatory demand, then satisfy the demands, then terminate; If automatic generation control pondage is less than automatic generation control regulatory demand, then do not satisfy the demands, return and perform step 3, until satisfy the demands.
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