CN103473713A - Aid decision making method for adjusting section power - Google Patents
Aid decision making method for adjusting section power Download PDFInfo
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- CN103473713A CN103473713A CN2013103959133A CN201310395913A CN103473713A CN 103473713 A CN103473713 A CN 103473713A CN 2013103959133 A CN2013103959133 A CN 2013103959133A CN 201310395913 A CN201310395913 A CN 201310395913A CN 103473713 A CN103473713 A CN 103473713A
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Abstract
The invention relates to the field of power grid simulation, in particular to an aid decision making method for adjusting section power. The method uses stable analysis of power grid safety as the basis to obtain the optimal adjusting decision through iterative adjustment. The method comprises the following steps of determining a judgment target, determining factors related to the judgment target, calculating an adjustable coefficient of the factor to be adjusted in all factors, adjusting the factor to be adjusted according to the adjusting object, obtaining the adjustable coefficient according to the adjusted data, and recording adjusting times and adjusting sequences to form adjusting decision after adjustment. The adjusting coefficient is equal to the specific value between the difference between the factor maximum value and the factor current value and the factor maximum value. The aid decision making method can help calculating and analyzing workers make decision through repeated try and iterative operation to provide service for decision support. The aid decision making method can provide suggestive decision and accordingly is used for decision support.
Description
Technical field
The present invention relates to the grid simulation field, be specifically related to a kind of for adjusting the aid decision-making method of section power.
Background technology
Following term is made an explanation:
Trend is calculated: it is the service condition according to given electric network composition, parameter and the elements such as generator, load that electric power system tide calculates, and determines the calculating of electric system each several part steady-state operation state parameter.
Electromechanical transient: Electrical-Machanical Transient Simulation of Power System is the electromechanical transient stability of using the method research electric system of time-domain-simulation, be that after electric system is subject to large the interference, each synchronous generator keeps synchronous operation and is transitioned into ability new or that return to original steady-state operation mode.
Electro-magnetic transient: transient overvoltage and the excess current that after analysis and calculation fault or operation, may occur, in order to power equipment is carried out to appropriate design, determine the existing device safety work, and the corresponding restriction of research and safeguard measure.In addition, for the operating principle of the novel quick protective relaying device of research, the problems such as failure point detecting principle and electromagnetic interference (EMI), also often need to carry out the electromagnetic transient analysis.
Electromechanics-electromagnetism hybrid simulation: the power network topology of calculating object is divided into as required to electromechanical transient computational grid and electro-magnetic transient computational grid in simulation process and implements respectively to calculate, be that exchanges data on interface realizes integrated simulation process by the circuit linkage interface, realize electric system electromechanical transient and electromagnetic transient hybrid simulation.
The computational analysis personnel: refer to by above-mentioned trend calculate, electromechanical transient calculates, electro-magnetic transient calculates, electromechanics-electromagnetism mixes to calculate and pays close attention to from different perspectives the operation of power networks data, according to self working experience, draw.
Calculate field at electric system simulation, computational analysis personnel expectation is by repeatedly attempting modification equipment service condition, obtain electric system each several part steady-state operation state parameter, by comparing different results, and then compare rationality and the optimality of different alter modes.
International and domestic, to the electric system simulation analysis field, help the computational analysis personnel to draw decision-making at present, show that the research of more excellent, optimum decision-making this respect need further raising.
Summary of the invention
For the deficiencies in the prior art, the purpose of this invention is to provide a kind ofly for adjusting the aid decision-making method of section power, trial, the iterative operation of the method by repeatedly helps the computational analysis personnel to draw decision-making, for decision support provides service.Utilize the method for the present invention formula strategy of can offering suggestions, thereby for decision support.
The objective of the invention is to adopt following technical proposals to realize:
The invention provides a kind ofly for adjusting the aid decision-making method of section power, its improvements are, described method be take the electricity net safety stable analysis as basis, by iterative adjustment, draws the optimum decision-making of adjusting, and described method comprises the steps:
(1) determine and pass judgment on target;
(2) determine the factor relevant to passing judgment on target;
(3) adjustability coefficients of the adjustment of the plan in all kinds of factors factor is calculated, wherein adjustability coefficients equals difference and the peaked ratio of this factor of this factor maximal value and this factor currency;
(4) according to adjustment aim, and adjusted for the adjustment factor; Draw adjustability coefficients according to the data after adjusting;
(5), after adjusting end, number of times and adjustment order adjusted in record, forms the adjustment decision-making.
Further, described electricity net safety stable analysis comprises N-1 static security analysis, static angle stability analysis, time domain stability analysis, dynamic stability frequency-domain analysis and calculation of short-circuit current; Described method, based on stabilization of power grids analysis modify grid equipment service condition, is obtained electric system each several part steady-state operation state parameter, by comparison result, show that the optimum under different alter modes is adjusted strategy.
Further, in described step (1), described judge target comprises trend convergence and section performance number.
Further, in described step (2), the factor relevant to passing judgment on target comprises sending end generator output and receiving end generator output.
Further, in described step (4), according to adjustment aim, select the factor of maximum adjustability coefficients or minimum adjustability coefficients to be adjusted, comprise the steps:
<1 > according to sending end zone be subject to end regions to calculate respectively adjustability coefficients;
<2 > add up meritorious maximal value for generator, and currency, each generator will calculate difference and the peaked ratio of maximal value and currency, and ratio is larger, and the adjustability coefficients of this generator is larger;
<3 > to sending end zone and the generator that is subject to end regions, according to adjustability coefficients, order is from big to small sorted;
<4 > select respectively the sending end zone and exerted oneself by the generator adjustment of end regions, if increase unit output, selecting large being adjusted of adjustability coefficients; If reduce unit output, select little being adjusted of adjustability coefficients;
<5 > calculate the section performance number, judge that whether the section performance number is reasonable, if rationally stop adjustment; If unreasonable, come back to step<1 >.
Further, described step<5 > in, section power represents the transport capacity of section, the maximal value of section power given in advance and minimum value, and the section performance number is rationally between maximal value and minimum value.
Compared with the prior art, the beneficial effect that the present invention reaches is:
The iterative deduction method the present invention relates to, can need the intention of user based on different to implement different adjustment amounts for decision support, thereby form different adjustment sequences, and final formation is adjusted strategy.
By calculating the adjustability coefficients of each factor, can provide reference for the user selects the adjustment factor, the adjustment amount of adjustment factor is set by the user, and the final adjustment strategy formed has comprised the whole adjustment intention of each step of user, thereby forms the decision-making based on difference adjustment intention.
The accompanying drawing explanation
Fig. 1 is the process flow diagram for the aid decision-making method of adjusting section power provided by the invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Provided by the invention for adjusting the aid decision-making method of section power, the method be take the electricity net safety stable analysis as basis, by iterative adjustment, draw the optimum decision-making of adjusting, described electricity net safety stable analysis comprises N-1 static security analysis, static angle stability analysis, time domain stability analysis, dynamic stability frequency-domain analysis and calculation of short-circuit current; Described method is based on stabilization of power grids analysis modify grid equipment service condition, obtain electric system each several part steady-state operation state parameter, by comparison result, show that the optimum under different alter modes is adjusted strategy, the process flow diagram of described method as shown in Figure 1, comprises the steps:
(1) determine and pass judgment on target: take the electricity net safety stable analysis field as background, pass judgment on target and comprise trend convergence and section performance number;
(2) determine the factor relevant to passing judgment on target: sending end generator output and receiving end generator output;
(3) the plan adjustment factor in all kinds of factors is carried out to the calculating of adjustability coefficients, adjustability coefficients equals difference and the peaked ratio of this factor of this factor maximal value and this factor currency; End value is larger, and the space that such factor is adjustable is larger;
(4), according to different adjustment aims, select the factor of maximum adjustability coefficients or minimum adjustability coefficients to be adjusted, until adjustment aim is reached; The adjustment sequence that a series of adjustment factor forms is a complete alternative adjustment decision-making; The adjustment amount that the adjustment factor is concrete is not stipulated, rule of thumb can set up on their own, and different adjustment amounts, the adjustability coefficients drawn, adjustment number of times, adjustment order be difference all, thereby can form different adjustment decision-makings.
The calculating adjustability coefficients comprises the steps:
<1 > according to sending end zone be subject to end regions to calculate respectively adjustability coefficients;
<2 > add up meritorious maximal value for generator, and currency, each generator will calculate difference and the peaked ratio of maximal value and currency, and ratio is larger, and the adjustability coefficients of this generator is larger;
<3 > to sending end zone and the generator that is subject to end regions, according to adjustability coefficients, order is from big to small sorted;
<4 > select respectively the sending end zone and exerted oneself by the generator adjustment of end regions, if increase unit output, selecting large being adjusted of adjustability coefficients; If reduce unit output, select little being adjusted of adjustability coefficients;
<5 > calculate the section performance number, judge that whether the section performance number is reasonable, section power represents the transport capacity of section, the maximal value of section power given in advance and minimum value, and the section performance number is rationally between maximal value and minimum value.If rationally stop adjusting; If unreasonable, come back to step<1 >.
(5) after adjustment finishes, record the regional generator adjustment with being subject to end regions of sending end sequentially, draw the adjustment strategy, the tactful sequencing of generator adjustment and the value of every generator adjustment of providing of adjustment.
Adjusting strategy is the order of determining that generator is adjusted; Method of adjustment is to adjust and the relevant generator of section one side.The method support makes repeated attempts, iterative adjustment, can stop at any time adjusting, can start at any time to adjust, whether the decision-making drawn is passed judgment on more excellent by the user, purpose is to provide a plurality of decision-makings selective for the user, in the process of iteration each time, the adjustment amount difference that no user sets, the adjustment amount difference that perhaps same user sets each time, will form different decision-makings, the difference of each decision-making is embodied in the difference of the adjustment of each step, the selection of each step adjustment amount has embodied different users or the consideration of same user under different situations, how to obtain optimum decision-making, need to iterate, repeatedly attempt.
Embodiment
Take 36 node systems as example, wherein between total subregion 1 and subregion 2, with circuit AC14, AC30, AC31, connect, the sending end zone is made as subregion 1, be subject to end regions to be made as subregion 2, circuit AC14, AC30, AC31 between these two subregions are made as section, and generator bus1, bus2, bus3 in subregion 1, have generator bus4, bus5, bus6 in subregion 2, section performance number 1.68481, the partition table information of primal system is as shown in the table:
The partition table information of table 1 primal system;
Expectation reduces section power, needing to reduce sending end zone unit output increases simultaneously and is subject to the end regions unit output, selects the bus2 of sending end adjustability coefficients minimum and the bus7 of receiving end adjustability coefficients maximum, and bus2 reduces and exerts oneself, the bus7 increase is exerted oneself, and after adjusting for the first time, section power becomes 0.98573; As shown in the table:
System partitioning table information after table 2 is adjusted;
If after adjusting, section power still exceeds expected range, need to continue to reduce the section transmission power, continue reducing sending end zone unit output increases simultaneously and is subject to the end regions unit output, remain the selection bus2 unit of adjustability coefficients minimum as adjusting object at sending end zone bus2, at the unit that is subject to end regions selection adjustability coefficients maximum, adjusted, select the bus8 unit as adjusting object, adjustment information is as following table:
Table 3 selects the bus8 unit as the adjustment information table of adjusting object
After adjusting, section power becomes 0.35195, and so far the section transmission power has reached target zone, stops adjusting.
The adjustment strategy provided according to this method is exactly, at first the minimizing of bus2 unit is exerted oneself, the increase of bus7 unit is exerted oneself, then bus2 unit continuation minimizing is exerted oneself, the increase of bus8 unit is exerted oneself, the section transmission power that the adjustment of process two-wheeled will be comprised of circuit AC14, AC30, AC31 is adjusted into target zone, this method is just determined and be adjusted exerting oneself of which unit qualitatively, point out which unit should reduce and exert oneself, which unit should increase is exerted oneself, number to the unit adjustment amount does not deal with, and can rule of thumb determine.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment, the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement the specific embodiment of the present invention, and do not break away from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of claim scope of the present invention.
Claims (6)
1. one kind for adjusting the aid decision-making method of section power, it is characterized in that, described method be take the electricity net safety stable analysis as basis, by iterative adjustment, draws the optimum decision-making of adjusting, and described method comprises the steps:
(1) determine and pass judgment on target;
(2) determine the factor relevant to passing judgment on target;
(3) adjustability coefficients of the adjustment of the plan in all kinds of factors factor is calculated, wherein adjustability coefficients equals difference and the peaked ratio of this factor of this factor maximal value and this factor currency;
(4) according to adjustment aim, and adjusted for the adjustment factor; Draw adjustability coefficients according to the data after adjusting;
(5), after adjusting end, number of times and adjustment order adjusted in record, forms the adjustment decision-making.
2. aid decision-making method as claimed in claim 1, is characterized in that, described electricity net safety stable analysis comprises N-1 static security analysis, static angle stability analysis, time domain stability analysis, dynamic stability frequency-domain analysis and calculation of short-circuit current; Described method, based on stabilization of power grids analysis modify grid equipment service condition, is obtained electric system each several part steady-state operation state parameter, by comparison result, show that the optimum under different alter modes is adjusted strategy.
3. aid decision-making method as claimed in claim 1, is characterized in that, in described step (1), described judge target comprises trend convergence and section performance number.
4. aid decision-making method as claimed in claim 1, is characterized in that, in described step (2), the factor relevant to passing judgment on target comprises sending end generator output and receiving end generator output.
5. aid decision-making method as claimed in claim 1, is characterized in that, in described step (4), according to adjustment aim, selects the factor of maximum adjustability coefficients or minimum adjustability coefficients to be adjusted, and comprises the steps:
<1 > according to sending end zone be subject to end regions to calculate respectively adjustability coefficients;
<2 > add up meritorious maximal value for generator, and currency, each generator will calculate difference and the peaked ratio of maximal value and currency, and ratio is larger, and the adjustability coefficients of this generator is larger;
<3 > to sending end zone and the generator that is subject to end regions, according to adjustability coefficients, order is from big to small sorted;
<4 > select respectively the sending end zone and exerted oneself by the generator adjustment of end regions, if increase unit output, selecting large being adjusted of adjustability coefficients; If reduce unit output, select little being adjusted of adjustability coefficients;
<5 > calculate the section performance number, judge that whether the section performance number is reasonable, if rationally stop adjustment; If unreasonable, come back to step<1 >.
6. aid decision-making method as claimed in claim 5, is characterized in that, described step<5 > in, section power represents the transport capacity of section, the maximal value of section power given in advance and minimum value, and the section performance number is rationally between maximal value and minimum value.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868471A (en) * | 2015-06-15 | 2015-08-26 | 国家电网公司 | Static security aid decision making method for provincial power grid |
| US11181874B2 (en) * | 2018-09-30 | 2021-11-23 | Northeast Electric Power University | N-1 static security analysis method for integrated energy system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101330205A (en) * | 2008-04-29 | 2008-12-24 | 天津大学 | Method for controlling section power based on tidal current pursuit and train rescheduling |
| CN101895116A (en) * | 2010-07-16 | 2010-11-24 | 国电南瑞科技股份有限公司 | Online available transmission capacity computing method based on distribution factor |
| US20120250483A1 (en) * | 2009-12-16 | 2012-10-04 | Soichiro Eto | Write power adjustment method and information recording method |
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- 2013-09-03 CN CN2013103959133A patent/CN103473713A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101330205A (en) * | 2008-04-29 | 2008-12-24 | 天津大学 | Method for controlling section power based on tidal current pursuit and train rescheduling |
| US20120250483A1 (en) * | 2009-12-16 | 2012-10-04 | Soichiro Eto | Write power adjustment method and information recording method |
| CN101895116A (en) * | 2010-07-16 | 2010-11-24 | 国电南瑞科技股份有限公司 | Online available transmission capacity computing method based on distribution factor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868471A (en) * | 2015-06-15 | 2015-08-26 | 国家电网公司 | Static security aid decision making method for provincial power grid |
| US11181874B2 (en) * | 2018-09-30 | 2021-11-23 | Northeast Electric Power University | N-1 static security analysis method for integrated energy system |
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Application publication date: 20131225 |