CN107292491B - The method for determining the power grid fired power generating unit peak regulation factor based on multiplicity - Google Patents
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Abstract
The invention discloses a kind of methods for determining the power grid fired power generating unit peak regulation factor based on multiplicity, list fired power generating unit peak modulation capacity and assess the quantitative target and qualitative index influence factor being considered as；The operation data and performance indicator during peak load regulation are determined by online thermal test in real time, the quantitative target needed in peak load regulation capability evaluation is calculated in real-time online；A reference value, weighted value and the code of points that quantitative target is determined using expert system, calculate the score of each quantitative target, and a reference value and weighted value of qualitative index are determined using expert system；On the basis of scoring quantitative target and each element of qualitative index, the examination score of these two types of indexs is integrated, obtain the peak modulation capacity evaluation total score in an evaluation cycle, it take it as the peak regulation factor in the period, the peak regulation factor is compared, realizes the scientific and reasonable overall merit of peak modulation capacity between different units.
Description
Technical field
The present invention relates to thermal power generating technology fields, more particularly to one kind to determine power grid fired power generating unit based on multiplicity
The method of the peak regulation factor.
Background technique
With the needs of China's power industry and national economy sustainable development, extra-high voltage grid is gradually built up, wind
The clean energy resourcies such as electricity, solar energy, nuclear power access on a large scale, and thermoelectricity installed capacity is seriously superfluous, peak load regulation network scarce capacity, occur
Abandoning water, abandons optical phenomenon at abandonment.For this purpose, National Development and Reform Commission, National Energy Board have issued " renewable energy regulating units
Preferential power generation trial method ", it is desirable that filtering out certain scale coal motor group is renewable energy peak regulation, is effectively relieved and abandons water, abandons
Wind abandons light, promotes renewable energy consumption.Renewable energy regulating units priority scheduling, it is former according to " whose peak regulation, who be benefited "
Then, regulating units incentive mechanism is established.
Therefore, renewable energy regulating units how to be filtered out and need a set of science, rule rationally, fair.No matter from
The angle of the stabilization of power grids, or from the perspective of whole society's energy-saving and emission-reduction, require renewable energy regulating units original
On the basis of need to undertake lower load, faster load responding ability, but also be necessary to ensure that unit safety, economy and stabilization
Operation, environment protection standard.Therefore the measurement for needing us to solve the fired power generating unit peak modulation capacity analyzed based on many factors first is asked
Topic realizes that peak modulation capacity has scientific comparativity between different units, this is that power grid filters out classic renewable energy
Regulating units establish peak load regulation competence motivation mechanism, motivate electricity power enterprise that technological means is taken to improve peak load regulation ability
Premise.
Traditionally, the common counter for measuring peak load regulation ability is peak regulation range, i.e., unit maximum, minimum technology contribute it
Difference.This measure haves the defects that three aspects:
1) peak regulation range only reflects the influence that unit is maximum, minimum technology power output is to peak load regulation ability, without anti-
The influences of the other factors to peak modulation capacity such as film projector group start-stop time, power output adjustment rate, more not from power grid security and section
The angle of energy emission reduction demand, it is contemplated that the influence of the factors such as the safe and environment-friendly of fired power generating unit, energy consumption level.
2) peak modulation capacity of fired power generating unit depend on many factors, and how by every factor Rational choice, according to each side
The rules evaluation peak modulation capacity formulated jointly is also a problem.This is mainly due to the more of the factor for influencing peak load regulation ability
Sample is difficult to be indicated with quantitative relationship, to also just be difficult to realize the comparison of the objective and fair to different peak load regulation abilities.
3) previous peak load regulation merit rating needs field test to complete.Bulk power grid possesses numerous fired power generating units, if
The evaluation of renewable energy peak modulation capacity is all carried out by field test, needs to take considerable time, man power and material, and number
According to artificial acquisition, it is difficult to guarantee the justice of data.And unit constantly carries out the transformation and upgrading of equipment, also just anticipates
Taste it is not disposable to the screening of renewable energy regulating units, it is necessary to roll and carry out, therefore pass through field test completely
Determine that renewable energy generation is difficult to realize.
4) peak load regulation network unit once it is determined that, need to supervise the executive condition of regulating units at any time.Traditional field surveillance
Mode needs to take considerable time, man power and material, when can only select, selects and carries out, it is therefore desirable to which online real-time oversight is as one
Kind beneficial complement.
In short, traditional fired power generating unit peak modulation capacity evaluation method, had not both accounted for multifactor influence,
The influence for not accounting for dynamic change lacks quantitative evaluation index, can not reflect comprehensively multifactor to peak load regulation ability
It influences, is relatively rough；And peak modulation capacity evaluation is completed by field test completely, and bulk power grid can not be real in this way
Now comprehensively, rollably filter out renewable energy regulating units；It is even more impossible to relate to net regulating units carry out overall process supervision.It is positive because
It is also just unfavorable in this way, we are difficult to carry out just objective assessment, comparison, sequence to the peak modulation capacities of different units at present
Classic renewable energy regulating units are filtered out in power grid, play the function of Optimized Operation, it is difficult to realize the peak load regulation network phase
Between optimization safety, economical and environmentally friendly run.
Summary of the invention
The present invention to solve the above-mentioned problems, propose it is a kind of based on multiplicity determine power grid fired power generating unit peak regulation because
The method of son, the present invention are obtained the various factors and data for influencing peak load regulation ability by the online thermal test of unit, established
Rule is assessed based on multifactor fired power generating unit peak modulation capacity, by each factor weight and code of points, reflection machine is calculated
The peak regulation factor of group peak regulation integration capability, to solve to consider shadow present in existing selection renewable energy regulating units method
The factor of sound is very few, lacks the problem of index is quantitatively evaluated.
To achieve the goals above, the present invention adopts the following technical scheme:
A method of the power grid fired power generating unit peak regulation factor is determined based on multiplicity, comprising the following steps:
(1) it lists fired power generating unit peak modulation capacity and assesses the quantitative target and qualitative index influence factor being considered as；
(2) operation data and performance indicator during peak load regulation, real-time online are determined by online thermal test in real time
The quantitative target needed in peak load regulation capability evaluation is calculated；
(3) a reference value, the weighted value that quantitative target is determined using expert system, calculate the score of each quantitative target.Benefit
The weighted value of qualitative index is determined with expert system；
(4) on the basis of scoring quantitative target and each element of qualitative index, the examination score of these two types of indexs is given
With synthesis, the peak modulation capacity evaluation total score in an evaluation cycle is obtained, using it as the peak regulation factor of unit, to the tune of each unit
The peak factor is compared, and filters out renewable energy regulating units.
In the step (1), quantitative target includes that Load characteristics index, safety indexes, economic index and environmental protection refer to
Mark.
In the step (1), Load characteristics index, which specifically includes that, not to be thrown oily minimum steady combustion load, AGC adjustable range, adjusts
Peak rate and start-stop time；
Safety indexes specifically include that the stability of boiler combustion stability and Water circulation hydrodynamics；
Economic index refers mainly to net coal consumption rate when underload；
Environment-friendly type index specifically includes that SO2Discharge amount, NOx discharge and smoke discharge amount；
Device characteristics specifically include that the authorized capacity of fired power generating unit, furnace water-cycling mode, heat-supplying mode, pulverized coal preparation system type
Formula and fuel characteristic.
Qualitative index includes device characteristics in the step (1).
In the step (3), quantitative target is scored at the actual value of index and the relative value of a reference value, then multiplied by its power
Weight values obtain.
In the step (3), in qualitative evaluation system, measure whether indices have certain architectural characteristic, by being
Or no two kinds of selections, to evaluate, value is 1 or 0 respectively.
In the step (3), if there is a certain quantitative target quantitative assessment index outside setting range, it is repaired
Just.
In the step (3), qualitative index is scored at the actual value of index and weighted value obtains product.
In the step (3), the weight score value of qualitative or quantitative index reflects the index in entire indicator evaluation system
In shared specific gravity, be essentially to be determined according to influence degree size of this index to peak modulation capacity.
In the step (4), the actual values of all indexs should periodically input or on-line data acquisition by way of dynamic
It updates.
Compared with prior art, the invention has the benefit that
The present invention is able to solve consideration influence factor mistake present in existing selection renewable energy regulating units method
Less, lack the problem of index is quantitatively evaluated.Online data is acquired by net source information platform, guarantees the objective, fair, public of data
Just, the peak regulation factor of each alternative unit can be obtained in a manner of in thread test, realize that a wide range of, roller screens renewable energy
Source regulating units solve and fully rely on that field test selection regulating units take considerable time, human and material resources etc. are asked in the past
Topic.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is flow diagram of the invention；
Fig. 2 is embodiment peak regulation factor evaluation content.
Specific embodiment:
The invention will be further described with embodiment with reference to the accompanying drawing.
It is noted that described further below be all exemplary, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form.Additionally, it should be understood that when using term "comprising" and/or " packet in the present specification
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, traditional fired power generating unit peak modulation capacity evaluation side exists in the prior art
Method, had not both accounted for multifactor influence, did not accounted for the influence of dynamic change yet, lacked quantitative evaluation index, can not
Reflect the deficiency of the multifactor influence to peak load regulation ability comprehensively.In order to solve technical problem as above, present applicant proposes
A method of the power grid fired power generating unit peak regulation factor is determined based on multiplicity, is mainly comprised the steps that
(1) it lists fired power generating unit peak modulation capacity and assesses the major influence factors being considered as, it is main including quantitative target and fixed
Property index.Quantitative target includes Load characteristics index, safety indexes, economic index, environmental protection index, and qualitative index includes setting
Standby characteristic.These influence factors constitute the overall evaluation system of a peak modulation capacity, system be it is open, can be according to reality
Situation increase and decrease essential elements of evaluation exits appraisement system.
When Load characteristics index specifically includes that not throwing oily minimum steady fires load, AGC adjustable range, peak regulation rate, start and stop
Between；
Safety indexes specifically include that boiler combustion stability, such as combustion chamber draft change rate；The stabilization of Water circulation hydrodynamics
Property, such as wall temperature of heated surface.
Net coal consumption rate etc. when economic index refers mainly to underload.
Environment-friendly type index specifically includes that SO2Discharge amount, NOx discharge, smoke discharge amount etc..
Device characteristics specifically include that the authorized capacity of fired power generating unit, furnace water-cycling mode, heat-supplying mode, pulverized coal preparation system type
Formula, fuel characteristic etc..
(2) using the real-time data acquisition of each power plant, the operation number during determining peak load regulation by online thermal test
According to and performance indicator, real-time online the quantitative target needed in peak load regulation capability evaluation is calculated, as Load characteristics index,
Environmental protection index, economic index, safety indexes etc.；
Important essential elements of evaluation, the unit active power for such as needing dispatching of power netwoks to provide, the SO for needing province's environmental protection Room to provide2
The data such as discharge amount, NOx discharge, smoke discharge amount, other information that can not be obtained online such as unit equipment characteristic pass through people
Work typing real-time data base.
(3) a reference value of quantitative target, weighted value and code of points determine that quantitative target is scored at by associated specialist discussion
The actual value of index and the relative value of a reference value, then obtain multiplied by its weighted value.
(4) a reference value of qualitative index and weighted value are determined by associated specialist discussion, and in qualitative evaluation system, measuring should
Whether index has certain architectural characteristic, evaluates by "Yes", two kinds of "No" selections, and then value is 1 to "Yes", "No" then value
It is 0.Quantitative target is scored at the actual value of index and weighted value obtains product.
(5) calculating of the peak regulation factor
On the basis of scoring quantitative target and each element of qualitative index, the examination score of these two types of indexs is given comprehensive
It closes, obtains the peak modulation capacity evaluation total score in an evaluation cycle, referred to as the peak regulation factor.The peak regulation factor is reflection unit at one
An overall target of peak load regulation ability aggregate level in evaluation cycle.The peak regulation factor is compared, can be used for screening
Renewable energy regulating units out.
Thermal power generation unit peak modulation capacity appraisement system be it is open, its internal finger can be increased and decreased according to practice situation
Mark.
Load characteristics index can be obtained by test data.
The ginsengs such as influence factor unit capacity, boiler shape, burning pattern, fuel characteristic, pulverized coal preparation system pattern, heat-supplying mode
Number is defined as set structure characterisitic parameter, is obtained by design instruction.
Influence factor environmental protection index, energy consumption index, safety index can be obtained by on-line operation data.
All quantitative targets are to test to obtain by the peak regulation of unit.
The actual value of all indexs should periodically input or on-line data acquisition by way of dynamic update.
The a reference value and weight of indices are obtained using domain-specialist knowledge.
The a reference value of indices is generally the index value for the mark post level of outstanding renewable energy generation actually reached.
The weight score value of index reflects index specific gravity shared in entire indicator evaluation system, is essentially basis
This index determines the influence degree size of peak modulation capacity.
A reference value and weighted value are relative concepts.It constantly improve, is up to new higher, more first with the update of technology
Water inlet is flat, therefore a reference value and weighted value of index, will also regard technical progress of industry trend and peak load regulation capacity upgrade is timely
It is adjusted.
The peak regulation factor is the summation of all index scores.
Acquisition to the fired power generating unit peak regulation factor is can to pass through on-line data acquisition completely, realizes distant place test, without
It is to rely solely on the mode of field test to obtain.
In a kind of typical embodiment of the application, as shown in Figure 1, Shandong Power 2016 renewable to 8 units
Energy unit is appraised and decided.Using the peak regulation factor of the invention, the peak modulation capacity sequence of unit, step such as Fig. 1 institute have been obtained
Show:
1) index system that evaluation includes is determined.Index include Load characteristics index, safety indexes, economic index,
Environmental protection index, architectural characteristic index, specific targets are as shown in Figure 2.
2) peak regulation test is carried out in the period of unit application, by on-line data acquisition system, acquires unit and transport in real time
Row data, access Shandong Power net source monitor integral system platform.Platform is according to the operation data during peak load regulation, in real time
The quantitative target needed in online record peak load regulation capability evaluation: Load characteristics index, environmental protection index, energy consumption index, safety
Property index etc.；Other qualitative parameters that can not be obtained online such as structural property parameter pass through manual entry, have by "Yes", "No"
Certain architectural characteristic is evaluated, and then value is 1 to "Yes", and then value is 0 to "No".All data actual values are as shown in Figure 2.
3) it for important essential elements of evaluation, is provided by more authoritative department, if unit active power is by grid dispatching center
EMS is provided；SO2Discharge amount, NOx discharge, smoke discharge amount are provided by province's environmental protection Room.
4) expert group is formed before test, expert group is made of genco, DianKeYuan, colleges and universities etc., true according to expert estimation
Determine a reference value and weighted value of index, as shown in Figure 2.The evaluation criteria value of each quantitative target is to measure whether this index meets
The evaluation criteria of the mark post value of renewable energy regulating units.Determining the foundation of the quantitative assessment a reference value of each index is: outstanding
The index value for the mark post level of renewable energy generation actually reached.The weight score value of index reflects the index and is entirely referring to
Specific gravity shared in appraisement system is marked, is essentially to be determined according to influence degree size of this index to peak modulation capacity.Base
Quasi- value and weighted value are relative concepts.It is constantly improve with the update of technology, is up to new higher, more advanced level, because
The a reference value and weighted value of this index will be also adjusted in time depending on technical progress of industry trend and peak load regulation capacity upgrade.
5) scoring of quantitative target calculates
Index is divided into positive index and negative sense index by the influence according to index to peak load regulation ability.Index value is bigger,
Performing low-load running of machine set ability is better, then is positive index, is otherwise negative sense index.
To positive index, single item evaluation index is calculated by formula (1), and to reverse index, single item evaluation index is based on formula (2)
It calculates:
In formula: S --- the single item evaluation index of index；
The actual value of Sx --- index；
The a reference value of So --- index.
Quantitative target total quantitative scores value is calculated by formula (3):
In formula: P1--- total quantitative scores value；
N --- participate in the index subjet sum of the quantitative assessment of evaluation；
Si--- the single item evaluation index of i-th index；
Ki--- the weighted value of i-th index.
The normal value of the single item evaluation index of indices is generally 1.0 or so, but when its actual value is much smaller than (or long-range
In) evaluation criteria value when, the S value being calculated is larger, and calculated result can deviate reality, to other index single item evaluation indexes
Effect generates interference.In order to eliminate this unreasonable influence, processing need to be modified to this.Modified method is: S value according to
Index feature determines different value ranges, such as: calculated value is taken when S value is between 0.8-1.2, S value when being greater than or equal to 1.2
1.2 are taken, S value takes 0 when less than 0.8.
6) scoring of qualitative index calculates
Qualitative index examines total score to calculate by formula (4):
In formula: P2--- qualitative evaluation index total score；
Fi--- the score value of i-th index in qualitative evaluation index system is commented by "Yes", two kinds of "No" selections
Fixed, then value is 1 to "Yes", and then value is 0 to "No"；
N --- participate in the project sum of the qualitative evaluation index of evaluation.
All indexs calculate score value as shown in Figure 2.
7) calculating of the peak regulation factor
On the basis of to quantitative target and qualitative index scoring is carried out, the evaluation score of this all index is asked
With obtain the peak modulation capacity evaluation total score in test period section, referred to as the peak regulation factor.The peak regulation factor is calculated by formula (5):
P=P1+P2‥‥‥‥‥‥‥‥‥‥‥‥‥(5)
In formula: P --- the renewable energy regulating units peak regulation factor.
Determine that peak load regulation ability sorts according to the size of the peak regulation factor, as shown in Figure 2.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (5)
1. a kind of method that the power grid fired power generating unit peak regulation factor is determined based on multiplicity, it is characterized in that: the following steps are included:
(1) it lists fired power generating unit peak modulation capacity and assesses the quantitative target and qualitative index influence factor being considered as；
Quantitative target includes Load characteristics index, safety indexes, economic index and environmental protection index, and Load characteristics index is main
It include: not throw oily minimum steady combustion load, AGC adjustable range, peak regulation rate and start-stop time；Safety indexes specifically include that pot
The stability of furnace combustion stability and Water circulation hydrodynamics；Economic index refers mainly to net coal consumption rate when underload；Environment-friendly type refers to
Mark specifically includes that SO2Discharge amount, NOx discharge and smoke discharge amount；
Qualitative index includes device characteristics, and device characteristics specifically include that the authorized capacity of fired power generating unit, furnace water-cycling mode, supply
Hot mode, pulverized coal preparation system pattern and fuel characteristic；
(2) operation data and performance indicator during peak load regulation are determined by online thermal test in real time, real-time online calculates
Obtain the quantitative target needed in peak load regulation capability evaluation；Has certain architectural characteristic by "Yes", "No" to evaluate qualitative finger
Mark, then value is 1 to "Yes", and then value is 0 to "No"；
(3) a reference value, weighted value and the code of points that quantitative target is determined using expert system calculate obtaining for each quantitative target
Point, a reference value and weighted value of qualitative index are determined using expert system；
The scoring calculation method of quantitative target are as follows:
Index is divided into positive index and negative sense index, to positive index, list by the influence according to index to peak load regulation ability
Item evaluation number is calculated by formula (1), and to reverse index, single item evaluation index is calculated by formula (2):
In formula, S is the single item evaluation index of index；SxFor the actual value of index；SoFor a reference value of index；
Quantitative target total quantitative scores value is calculated by formula (3):
In formula, P1For total quantitative scores value；N is the index subjet sum for the quantitative assessment for participating in evaluation；SiFor i-th index
Single item evaluation index；KiFor the weighted value of i-th index；
The scoring calculation method of qualitative index are as follows:
Qualitative index examines total score to calculate by formula (4):
In formula, P2For qualitative evaluation index total score；FiFor the score value of i-th index in qualitative evaluation index system, press
"Yes", two kinds of "No" selections are to evaluate, and then value is 1 to "Yes", and then value is 0 to "No"；N is the qualitative evaluation index for participating in evaluation
Project sum；
(4) on the basis of scoring quantitative target and each element of qualitative index, the examination score of these two types of indexs is given comprehensive
It closes, obtains the peak modulation capacity evaluation total score in an evaluation cycle, take it as the peak regulation factor in the period, the peak regulation factor is carried out
Compare, filters out renewable energy regulating units.
2. a kind of method for determining the power grid fired power generating unit peak regulation factor based on multiplicity as described in claim 1, special
Sign is: in the step (3), if there is a certain quantitative target quantitative assessment index outside setting range, being modified to it.
3. a kind of method for determining the power grid fired power generating unit peak regulation factor based on multiplicity as described in claim 1, special
Sign is: in the step (3), qualitative index is scored at the actual value of index and weighted value obtains product.
4. a kind of method for determining the power grid fired power generating unit peak regulation factor based on multiplicity as described in claim 1, special
Sign is: in the step (3), the weight score value of qualitative or quantitative index reflects index institute in entire indicator evaluation system
The specific gravity accounted for is essentially to be determined according to influence degree size of this index to peak modulation capacity.
5. a kind of method for determining the power grid fired power generating unit peak regulation factor based on multiplicity as described in claim 1, special
Sign is: in the step (4), the actual values of all indexs should periodically input or on-line data acquisition by way of dynamic more
Newly.
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| CN104463378A (en) * | 2014-12-29 | 2015-03-25 | 国家电网公司 | Algorithm for wind power generation absorption capacity of provincial power grid in area where hydropower resources are rich |
| CN104751236A (en) * | 2014-12-29 | 2015-07-01 | 国家电网公司 | Transmission capacity and wind and fire bundling transmission optimization method of extra-high voltage channel |
| CN106446404A (en) * | 2016-09-26 | 2017-02-22 | 华北电力大学 | Piecewise calculation method for thermal power generating unit peak regulating energy consumption cost |
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| CN104463378A (en) * | 2014-12-29 | 2015-03-25 | 国家电网公司 | Algorithm for wind power generation absorption capacity of provincial power grid in area where hydropower resources are rich |
| CN104751236A (en) * | 2014-12-29 | 2015-07-01 | 国家电网公司 | Transmission capacity and wind and fire bundling transmission optimization method of extra-high voltage channel |
| CN106446404A (en) * | 2016-09-26 | 2017-02-22 | 华北电力大学 | Piecewise calculation method for thermal power generating unit peak regulating energy consumption cost |
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