CN101291063A - Scheduling method of energy conservative power generation - Google Patents
Scheduling method of energy conservative power generation Download PDFInfo
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- CN101291063A CN101291063A CNA2008101237254A CN200810123725A CN101291063A CN 101291063 A CN101291063 A CN 101291063A CN A2008101237254 A CNA2008101237254 A CN A2008101237254A CN 200810123725 A CN200810123725 A CN 200810123725A CN 101291063 A CN101291063 A CN 101291063A
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Abstract
The invention provides an energy-saving power generation dispatching method, which reduces resources for unit power generation and emission of pollutants. By utilizing the dispatching method, the average coal consumption of conventional non-heat supply coal-fired units is reduced from 309.03 to 307.22 grams/kilowatt hour, in which 1.81 grams/kilowatt hour is reduced; 31.9 thousand tons of coal can be saved monthly, and 346.1 thousand tons yearly, so that the method has obvious economic benefit and environmental protection benefit.
Description
Technical field
The present invention relates to a kind of dispatching method, especially relate to a kind of energy-saving power generation dispatching method.
Background technology
In short supply in current global energy, under the more and more serious overall background of environmental pollution, power generation enterprise is as energy resource consumption and disposal of pollutants rich and influential family, and how when guaranteeing electrical production supply and security dispatching, saving the existing energy and reducing discharging is trend of the times.And power dispatching station is when establishment power grid enterprises generation schedule, the mode of the plan of generally taking.Arrange the day generation schedule of unit by the plan energy output of year or each power plant of monthly formulation.How this scheduling mode with planned assignment unit generation amount embodies energy-saving power generation dispatching when arranging the energy output of unit, lack effective foundation.As causing the generating set of 600,000 units and 200,000 units to utilize hourage, desulfurization transformation unit utilizes hourage almost as broad as long with the generating set of the unit that does not carry out the desulfurization transformation.How to change existing power generation dispatching mode and become the problem that presses for solution.
For this reason, energy-saving power generation dispatching is implemented in State Council's issue " energy-saving power generation dispatching way ".To ensure the power system safety and stability operation and to power continuously is prerequisite, is constraint with the environmental protection, is target with energy-conservation, renewable and the clean electric power generation resource of preferential use, use other generating resource in regular turn, reduce environmental pollution, whole electric power system is moved under the mode of efficient energy-saving.
Summary of the invention
1, goal of the invention
The present invention is directed to the deficiencies in the prior art, proposed a kind of method of energy-saving power generation dispatching,, also can reduce the discharging of pollutant simultaneously so that the employed resource of unit energy output is less.
2, technical scheme
Carry out energy-saving power generation dispatching, primary is according to energy-conservation generating requirement, establishment electricity power enterprise unit day generation schedule, according to " energy-saving power generation dispatching way ", with unit generation energy consumption and discharging is foundation, has determined unit generation tagmeme table, and in concrete implementation process, how to embody unit generation tagmeme table, i.e. the quantification of unit generation tagmeme is the key point of dealing with problems.Simultaneously under the energy-saving distribution mode, trend is determined by start mode under the energy-saving distribution mode, as long as nonoverload, scheduling just has no reason to regulate, be in uncontrollable state, heavily loaded section will be in heavy condition always, and system safety nargin reduces greatly, how under real electrical network condition, realize that security dispatching also is the problem that needs emphasis to solve.
In order to overcome the above problems, we have introduced lateral confinement and longitudinal restraint.
So-called lateral confinement, promptly by quantification to the generating sequencing table, give every machine set of dispense energy output in the sequencing table, the unit generation amount is rationally drawn back gap between every unit, to embody the unit ordering, when distributing the unit generation curve, guarantee unit generation curvilinear integral electric weight equal divide power distributing amount to be lateral confinement.
We have proposed the notion of subregion so-called longitudinal restraint, and the whole network is divided into several subregions, and each subregion is set the maximum download capabilities of subregion main transformer.Carrying out the unit generation curve again divides timing assurance the whole network unit generation curve and equals the whole network load prediction curve.Guarantee the interior unit generation curve of each subregion simultaneously and be not less than subregion to distribute the generating curve.(subregion can distribute the maximum download capabilities of generating curve=partition load prediction curve-subregion main transformer).
Overall unit planned assignment is divided into following steps:
1) determines unit generation tagmeme table
2) determine the whole network and subregion unit start combination
3) carry out unit day energy output and a day generating curve distribute
4) carry out the correction of unit day generating curve
3, beneficial effect
Use above-mentioned energy-saving scheduling method, can realize that the average coal consumption of the coal-fired unit of conventional non-heat supply drops to 307.22 gram/kilowatt hours from 309.03 gram/kilowatt hours, the 1.81 gram/kilowatt hours that descend are economized on coal 3.19 ten thousand tons the whole month, economize on coal 34.61 ten thousand tons the whole year, economic benefit and environmental benefit are all very outstanding.
Embodiment
Determine unit generation tagmeme table by following steps
1) reads the tagmeme table that economic and commercial committee issued in every month;
2) create the sequencing table of planning day automatically according to unit maintenance, debugging situation;
3) according to network loss correction factor refinement tagmeme table;
4) determine final tagmeme table.
Determine the whole network and subregion unit start combination by following steps
1) calculates the minimum start capacity of each subregion
Computing formula is: the load prediction maximum deducts the difference of actual maximum download capabilities.
2) according to the final sequencing table of determining, determine subregion start unit successively, until the high output sum of start unit greater than the minimum start capacity of subregion
When determining high output, divide three kinds of situations:
A), calculate according to the high output of reality for general unit;
B) for the unit of declaring curve, according to the maximum value calculation of declaring;
C) for the unit of same day start, if the time of start early than the maximum load time, then calculate, otherwise calculate by 0 according to the high output of reality.
The capacity of subregion unit start simultaneously satisfies the minimum start of relaying protection capacity requirement.
3) calculate the minimum start capacity of the whole network
Computing formula is subjected to the difference of electricity for the load prediction maximum deducts.
4) determine the minimum start capacity of residue unit
Computing formula is each subregion unit of the minimum start capacity of the whole network capacity sum of having started shooting.
5) according to the final sequencing table of determining, determine outer each unit start mode of subregion successively, the high output sum of the unit of outside subregion, starting shooting greater than the high output sum of the whole network residue unit greater than the minimum start capacity of the whole network residue unit.
6) the actual start capacity of statistics the whole network and each subregion is checked reference for the user.
By following steps carry out unit day energy output and a day generating curve distribute
1) the generating curve of the unconventional coal-fired unit of calculating the whole network
Order is: wind-powered electricity generation, nuclear power, comprehensive utilization unit, focus coproduction, natural gas.
2) determine the generating curve that the whole network need distribute
Computing formula is: the whole network load prediction curve deducts the difference that is subjected to electricity to deduct the unconventional coal-fired unit of the whole network again.
3) calculate the whole network and distribute energy output
Computing formula is: the whole network need distribute generating curvilinear integral value.
4) adopt the equal proportion descent method to calculate each unit equipment utilance of the whole network, wherein, the highest and minimum utilization rate of equipment and installations of the whole network can be provided with.
5) calculate the total electric weight of the whole network, wherein the unit computing formula of start on the same day is:
Active volume=actual capacity * start duration/24 hour
The total electric weight of the whole network=all unit active volume * utilization rate of equipment and installations sums
6) the generating curve of the unconventional coal-fired unit of calculating subregion
Order is: wind-powered electricity generation, nuclear power, comprehensive utilization unit, focus coproduction, natural gas.
Determine the difference of amassing of the minimum generating of subregion curve calculation formula actual maximum download capabilities and downloadable coefficients for the partition load prediction curve deducts.
Determine that the conventional coal-fired unit power curve computing formula of subregion is that the minimum generating of subregion curve deducts unconventional coal burning machine sets of curves.
Calculating the minimum energy output formula of subregion is the minimum generating of subregion curvilinear integral value.
7) calculate each unit actual allocated electric weight, formula is
Active volume * utilization rate of equipment and installations * (the whole network distributes the total electric weight in energy output/whole nation)
8) check machine component power distributing amount and whether satisfy the highest and minimum electric weight constraint,, then be made as the highest or minimum electric weight if do not satisfy.
9) add up each subregion unit actual allocated electric weight sum
10) judge that whether each subregion actual allocated electric weight is greater than the minimum energy output of subregion, if less than the minimum energy output of subregion, distribute minimum energy output then for this subregion, each unit carries out the electric weight distribution according to the internal unit utilance in this subregion in this subregion simultaneously, the residue unit distributes according to the whole network ordering again, iteration repeatedly, until the actual allocated electric weight of all subregions all greater than the minimum energy output of subregion.
Claims (4)
1, a kind of energy-saving power generation dispatching method is characterized in that, may further comprise the steps,
1) determines unit generation tagmeme table;
2) determine the whole network and subregion unit start combination;
3) carry out unit day energy output and a day generating curve distribute;
4) carry out the correction of unit day generating curve.
2, a kind of energy-saving power generation dispatching method according to claim 1 is characterized in that, above-mentioned steps 1) further may further comprise the steps,
1) reads the tagmeme table that economic and commercial committee issued in every month;
2) create the sequencing table of planning day automatically according to unit maintenance, debugging situation;
3) according to network loss correction factor refinement tagmeme table;
4) determine final tagmeme table.
3, a kind of energy-saving power generation dispatching method according to claim 1 is characterized in that, above-mentioned steps 2) further may further comprise the steps,
1) calculates the minimum start capacity of each subregion;
2) according to the final sequencing table of determining, determine subregion start unit successively, until the high output sum of start unit greater than the minimum start capacity of subregion;
3) calculate the minimum start capacity of the whole network;
4) determine the minimum start capacity of residue unit
5) according to the final sequencing table of determining, determine outer each unit start mode of subregion successively, the high output sum of the unit of outside subregion, starting shooting greater than the high output sum of the whole network residue unit greater than the minimum start capacity of the whole network residue unit;
6) statistics the whole network and the actual start capacity of each subregion.
4, a kind of energy-saving power generation dispatching method according to claim 1 is characterized in that, above-mentioned steps 3) further may further comprise the steps,
1) the generating curve of the unconventional coal-fired unit of calculating the whole network;
2) determine the generating curve that the whole network need distribute;
3) calculate the whole network and distribute energy output;
4) adopt the equal proportion descent method to calculate each unit equipment utilance of the whole network;
5) calculate the total electric weight of the whole network
6) the generating curve of the unconventional coal-fired unit of calculating subregion;
7) calculate each unit actual allocated electric weight;
8) check machine component power distributing amount and whether satisfy the highest and minimum electric weight constraint;
9) add up each subregion unit actual allocated electric weight sum
10) judge that whether each subregion actual allocated electric weight is greater than the minimum energy output of subregion.
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| CNA2008101237254A CN101291063A (en) | 2008-05-30 | 2008-05-30 | Scheduling method of energy conservative power generation |
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| CNA2008101237254A CN101291063A (en) | 2008-05-30 | 2008-05-30 | Scheduling method of energy conservative power generation |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101593975B (en) * | 2009-06-24 | 2011-02-16 | 广东省电力调度中心 | Energy-saving power generation dispatching method |
| CN101989744A (en) * | 2009-07-31 | 2011-03-23 | 华东电力试验研究院有限公司 | Computer and network-combined energy-saving power generation scheduling method |
| CN102270852A (en) * | 2011-07-27 | 2011-12-07 | 上海电力学院 | Method for analyzing operating mode set after accessing renewable energy to isolated power grid |
| CN101989743B (en) * | 2009-07-31 | 2013-06-12 | 华东电力试验研究院有限公司 | Energy-saving power generation dispatching optimization method based on direct current power flow |
| CN103580021A (en) * | 2013-10-28 | 2014-02-12 | 国家电网公司 | Method for optimizing inter-subarea tie line exchanged electricity based on marginal electricity generation energy consumption |
| CN103887826A (en) * | 2014-03-05 | 2014-06-25 | 中国东方电气集团有限公司 | Active power distribution method for achieving least fuel consumption in system of a plurality of conventional generating sets |
-
2008
- 2008-05-30 CN CNA2008101237254A patent/CN101291063A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101593975B (en) * | 2009-06-24 | 2011-02-16 | 广东省电力调度中心 | Energy-saving power generation dispatching method |
| CN101989744A (en) * | 2009-07-31 | 2011-03-23 | 华东电力试验研究院有限公司 | Computer and network-combined energy-saving power generation scheduling method |
| CN101989743B (en) * | 2009-07-31 | 2013-06-12 | 华东电力试验研究院有限公司 | Energy-saving power generation dispatching optimization method based on direct current power flow |
| CN102270852A (en) * | 2011-07-27 | 2011-12-07 | 上海电力学院 | Method for analyzing operating mode set after accessing renewable energy to isolated power grid |
| CN102270852B (en) * | 2011-07-27 | 2016-08-03 | 上海电力学院 | Analyze the method for operation grouping after regenerative resource accesses island network |
| CN103580021A (en) * | 2013-10-28 | 2014-02-12 | 国家电网公司 | Method for optimizing inter-subarea tie line exchanged electricity based on marginal electricity generation energy consumption |
| CN103580021B (en) * | 2013-10-28 | 2015-05-20 | 国家电网公司 | Method for optimizing inter-subarea tie line exchanged electricity based on marginal electricity generation energy consumption |
| CN103887826A (en) * | 2014-03-05 | 2014-06-25 | 中国东方电气集团有限公司 | Active power distribution method for achieving least fuel consumption in system of a plurality of conventional generating sets |
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