CN108717597A - A kind of the electricity power engineering on-road efficiency evaluation method and system of optimization grid structure - Google Patents
A kind of the electricity power engineering on-road efficiency evaluation method and system of optimization grid structure Download PDFInfo
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Abstract
The present invention relates to a kind of the electricity power engineering on-road efficiency evaluation methods and system of optimization grid structure, including the following contents：Acquire the actual motion electric power data of needs assessment；The electricity power engineering project efficiency of the optimization grid structure is evaluated according to the electric power data of acquisition；The electricity power engineering program result of the optimization grid structure is evaluated according to the electric power data of acquisition；The project of the optimization grid structure engineering is evaluated safely according to the electric power data of acquisition, project efficiency, program result and project safety are considered, to optimizing the operational effect overall merit of grid structure engineering.
Description
Technical field
The present invention relates to a kind of the electricity power engineering on-road efficiency evaluation methods and system of optimization grid structure, are related to power grid
Transmission technique field.
Background technology
Currently, it is functional for institute usually to have two class methods, one kind for the evaluation of electricity power engineering project operation benefit
The electricity power engineering project of type carries out on-road efficiency evaluation using same set of index system.
The function of being undertaken in power grid due to project of transmitting and converting electricity is different, and evaluation index and evaluation criterion all should sides
Weight and difference, such as ferroelectric power supply engineering are higher for security requirement, and the requirement for load factor is relatively low, meets
Power demand engineering evaluates all engineerings for the more demanding of load factor, using unified index and standard, has ignored item
Purpose functional attributes feature can not provide for the follow-up construction of such engineering and targetedly suggest, such evaluation method cannot
Whether the basic goal of fully reflection project construction is realized；It is another kind of be by electricity power engineering project be divided into common network engineering, specially
Item project of transmitting and converting electricity and networking project, divide its effect in power grid, to each from the space of engineering and physical layer
Engineering is set separately different evaluation indexes and carries out project operation benefit evaluation, and this kind of evaluation method granularity is thicker, does not fill
Divide and consider engineering main function in power grid, evaluation result is caused to deviate from the main problem that engineering construction to be solved, it cannot be right
The operation and construction of such engineering are offered reference from now on.In addition, the index involved in above two method does not set evaluation mark
Standard, evaluation procedure are subjective.
In conclusion so far there has been no research from the different angle of engineering project system function, it is targetedly right
Meet power demand structure appraisement system, proposes evaluation index, explicit evaluation standard.
Invention content
In view of the above-mentioned problems, the object of the present invention is to provide it is a kind of can be from the different angle of engineering system function to power grid
Engineering carries out the electricity power engineering on-road efficiency evaluation method and system of the optimization grid structure of accurate evaluation.
To achieve the above object, the present invention takes following technical scheme：
In a first aspect, the present invention provide it is a kind of optimization grid structure electricity power engineering on-road efficiency evaluation method, including with
Lower content：Acquire the actual motion electric power data of needs assessment；According to the electric power data of acquisition to the electricity of the optimization grid structure
Net engineering project efficiency is evaluated, and project efficiency evaluation index includes improving grid structure contribution performance, the check of bayonet electric current
Than and average radius of electricity supply difference；According to the electric power data of acquisition to the electricity power engineering program result of the optimization grid structure into
Row evaluation, effectiveness evaluation of project index includes engineering transformer maximum load rate, engineering transformer Rate of average load, engineering line
Road maximum load rate, engineering circuit Rate of average load, overhead transmission line loss, main transformer loss, peak load moment power factor,
Minimum load moment power factor and capacity-load ratio；
The project of the optimization grid structure engineering is evaluated safely according to the electric power data of acquisition, project safety is commented
Valence index includes main transformer availability, circuit availability, busbar voltage qualification rate, power grid safety accident frequency, relay protection
With stability control equipment malfunction and tripping number, transformer unplanned outage time, circuit unplanned outage hourage, the non-meter of circuit
Draw the stoppage in transit frequency and line tripping rate；
Consider project efficiency, program result and project safety, the operational effect to optimizing grid structure engineering integrates
Evaluation.
Further, the electricity power engineering project efficiency of the optimization grid structure is commented according to the electric power data of acquisition
Valence, specific evaluation procedure are：
It calculates and performance σ is contributed to periphery power network wiring structure change situation i.e. grid structure before and after engineering puts into operation, according to σ
Evaluation engineering importance, evaluation result are denoted as D11；
Calculate the ratio R of circuit operation actual current and circuit bayonet electric currentab：
Rab=Ca/Cb
In formula, CaActual current, C are run for circuitbFor circuit bayonet electric current, according to RabThe importance of evaluation engineering, is commented
Valence result is denoted as D12；
Calculate engineering put into operation front and back substation's supply district average value of the geometric center to boundary difference Δ R：
In formula, Δ R is that the engineering front and back regional power grid that puts into operation be averaged the difference of radius of electricity supply, and S is engineering region power supply face
Product, N are that engineering puts into operation total seat number of preceding region electricity grid substation, and engineering Assessment of Important, evaluation knot are carried out according to Δ R
Fruit is denoted as D13；
D is calculated according to the above results1：D1=a11D11+a12D12+a13D13, according to D1The engineering construction is evaluated for reinforcing
Reinforce rack structure optimization ability effect, in formula, a11、a12、a13Respectively improve grid structure contribution performance, bayonet electric current school
Core is than the weight with average radius of electricity supply difference in efficiency evaluation, a11+a12+a13=1.
Further, the electricity power engineering program result of the optimization grid structure is evaluated according to the electric power data of acquisition
Specific evaluation procedure is：
Calculate engineering transformer maximum load rate μmax,t：μmax,t=Pmax,t/St, in formula, μmax,tIt is negative for transformer maximum
Load rate；Pmax,tFor the peak load that transformer occurs, StFor transformer rated capacity, transformer puts into operation after preset time, according to
Interval assessment engineering operation effect, evaluation result residing for maximum load rate are denoted as D21, it is pre- according to whether engineering operation effect reaches
Phase is to D21Value be configured；
Calculate the Rate of average load μ of engineering transformeravg,t：μavg,t=Pavg,t/St, in formula, μavg,tIt is averagely negative for transformer
Load rate；Pavg,tFor transformer annual load, StFor transformer rated capacity, transformer puts into operation the setting time limit time, according to change
Interval assessment engineering operation effect, evaluation result residing for the Rate of average load of depressor are denoted as D22, according to engineering operation effect whether
It reaches expected to D22Value be configured；
Calculate circuit maximum load rate μmax,1：μmax,1=Pmax,1/S1, in formula, μmax,1For circuit maximum load rate；Pmax,l
For the peak load that circuit occurs, SlFor circuit rated capacity, circuit puts into operation after the setting time limit, according to circuit maximum load rate
Residing interval assessment engineering operation effect, evaluation result are denoted as D23, whether reached according to engineering operation effect expected to D23's
Value is configured；
Calculate circuit Rate of average load μavg,1：μavg,1=Pavg,1/S1, in formula, μavg,1For circuit Rate of average load；Pavg,l
For circuit annual load；SlFor circuit rated capacity circuit；It puts into operation after setting the time limit, according to circuit Rate of average load percentage
Engineering operation effect is evaluated in section, and evaluation result is denoted as D24, whether reached according to engineering operation effect expected to D24
Value be configured；
It calculates overhead line path loss and consumes Ql,l：Ql.l=Qin-Qout, in formula, QinElectricity, Q are inputted for transformeroutFor transformer
Electricity is exported, engineering operation effect is evaluated according to overhead transmission line loss, evaluation result is denoted as D25, according to engineering operation
Whether effect reaches expected to D25Value be configured；
It calculates main transformer and Q is lostl,t, Ql.t=Qin-Qout, Q in formulainElectricity, unit MWh are inputted for transformer；QoutFor transformation
Device exports electricity, is evaluated engineering operation effect according to main transformer loss, evaluation result is denoted as D26；
Calculate peak load moment power factor
In formula, S is the apparent energy of peak load moment equipment conveying, and P is the active of peak load moment equipment conveying
Power, Q are the reactive power of peak load moment equipment conveying, and engineering operation is carried out according to peak load moment power factor
Effect assessment, evaluation result are denoted as D27, whether reached according to engineering operation effect expected to D27Value be configured；
Calculate minimum load moment power factor
In formula, S is the apparent energy of minimum load moment equipment conveying, and P is the active of minimum load moment equipment conveying
Power, Q are the reactive power of minimum load moment equipment conveying, and engineering operation is carried out according to minimum load moment power factor
Effect assessment, evaluation result are denoted as D28, whether reached according to engineering operation effect expected to D28Value be configured；
Calculate engineering put into operation after a certain power supply area of power grid, same voltage class power grid public transformer equipment total capacity with
The ratio R s of corresponding total load：
Rs=∑ Sei/Pmax
In formula, ∑ SeiFor voltage class peak load Daily treatment cost；PmaxIt is thrown for the voltage class annual peak load day
The total capacity for entering the substation of operation, according to photograph《Urban power network planning and designing directive/guide》Q/GDW 156-2006 row engineerings are transported
Row effect assessment, evaluation result are denoted as D29, whether reached according to engineering operation effect expected to D29Value be configured；
D is calculated according to These parameters2, according to D2Engineering effort evaluation is carried out with the comparison result of predetermined threshold value： D2=
a21D21+a22D22+a23D23+a24D24+a25D25+a26D26+a27D27+a28D28+a29D29, wherein a21、a22、 a23、a24、a25、a26、
a27、a28、a29Respectively engineering transformer maximum load rate, engineering transformer Rate of average load, engineering circuit maximum load rate,
Engineering circuit Rate of average load, overhead transmission line loss, main transformer loss, peak load moment power factor, minimum load moment work(
The weight of rate factor and capacity-load ratio in efficiency evaluation, a21+a22+a23+a24+a25+a26+a27+a28+a29=1.
Further, the tool project of the optimization grid structure engineering evaluated safely according to the electric power data of acquisition
Body evaluation procedure is：
Calculate main transformer availability AT：
In formula：μ is forced outage rate, TrFor failure mean repair time, TΣAAdd up time between failures for equipment,
TΣIt puts into operation the time, engineering safety reliability is evaluated according to main transformer availability, evaluation result D to be accumulative31It indicates, according to
Engineering safety reliability standard is to D31Value is determined；
Calculate circuit availability AL：
In formula, u is forced outage rate, TrFor failure mean repair time, TΣAAdd up time between failures, T for equipmentΣ
It puts into operation the time, engineering safety reliability is evaluated according to circuit availability, evaluation result D to be accumulative31It indicates, according to
Engineering safety reliability standard is to D32Value is determined；
Calculating project busbar A phase voltage qualification rates ηA：ηA(%)=(1-Tb/TΣ) * 100%, in formula, ηAFor project busbar
A phase voltage qualification rates, TbFor voltage out-of-limit cumulative time, TΣFor project total operating statistic time, closed according to busbar A phase voltages
Lattice rate evaluates engineering safety reliability, and evaluation result is denoted as D33, according to engineering safety reliability standard to D33Be worth into
Row determines；
Count power grid safety accident frequency Ja, according to power grid safety accident frequency, to engineering safety reliability
It is evaluated, evaluation result is denoted as D34, according to engineering safety reliability standard to D34Value is determined；
Inside calculating project relay protection and stability control equipment or caused by engineering puts into operation in power grid other positions it is stable
The malfunction of device generation, tripping number JJ, can to engineering safety according to relay protection and stability control equipment malfunction and tripping number
It is evaluated by property, evaluation result is denoted as D35, according to engineering safety reliability standard to D35Value is determined；
Count transformer unplanned outage time ∑ Td.t, can to engineering safety according to transformer unplanned outage hourage
It is evaluated by property, evaluation result is denoted as D36, according to engineering safety reliability standard to D36Value is determined；
Obtain circuit unplanned outage hourage ∑ Td.l, reliable to engineering safety according to circuit unplanned outage hourage
Property is evaluated, and evaluation result is denoted as D37, according to engineering safety reliability standard to D37Value is determined；
Count circuit unplanned outage frequency fl, engineering safety reliability is commented according to the circuit unplanned outage frequency
Valence, evaluation result are denoted as D38, according to engineering safety reliability standard to D38Value is determined；
Calculate the trip-out rate caused by circuit runs external environment or Insulation Problems：λ=M/T, in formula, λ is non-of circuit
Because of trip-out rate, during M is statistics, the non-total degree that trips caused by circuit self-capacity or Insulation Problems, when T is evaluation
Between, engineering safety reliability is evaluated according to line tripping rate, evaluation result is denoted as D39, according to engineering safety reliability
Degree is to D39Value is determined；
Engineering safety evaluation, evaluation result D are carried out according to These parameters3It indicates： D3=a31D31+a32D32+a33D33+
a34D34+a35D35+a36D36+a37D37+a38D38+a39D39, wherein a31、a32、 a33、a34、a35、a36、a37、a38、a39Based on respectively
Become availability, circuit availability, busbar voltage qualification rate, power grid safety accident frequency, relay protection and stability control equipment to miss
Dynamic and tripping number, the transformer unplanned outage time, circuit unplanned outage hourage, the circuit unplanned outage frequency and
Weight of 9 indexs of line tripping rate in safety evaluation, and a31+a32+a33+a34+a35+a36+a37+a38+a39=1；According to
D3It is whether qualified that the engineering safety reliability is evaluated with the comparison result of preset value.
Further, defeated to transregional reinforcement transprovincially according to project efficiency, the evaluation result of program result and project safety
The operational effect overall merit of electric channel electricity power engineering, detailed process are：
1) operational effect overall merit numerical value is calculated, the calculation formula of operational effect overall merit is：
D=a1D1+a2D2+a3D3
Wherein, a1、a2、a3Respectively project efficiency D1, program result D2, the safe D of project3Weight, a1+a2+a3=1；
2) when D < set minimum threshold, it is believed that grid structure engineering operation effect is poor as an optimization for the engineering；
When setting minimum threshold≤D < setting max-thresholds, it is believed that the optimization grid structure operational effect of the engineering is good
It is good；
When D >=setting max-thresholds, it is believed that operational effect is good in terms of the engineering optimization grid structure.
Further, a1、a2、a3The weight combined with subjective and objective weight with reference to comparison method using index classification is solved
Algorithm is solved to obtain.
Further, before calculating operational effect overall merit numerical value D, further comprise：
Determine D1、D2、D3Evaluation approach domain；
For efficiency D1Evaluation determines that evaluation approach domain is d1={ d11,d12,d13, wherein d11Represent important, d12Generation
Table is generally important, d13It represents inessential；
For effect D2Evaluation determines that domain is d2={ d21,d22, wherein d21Represent meet demand, d22It represents discontented
Sufficient demand；
For safe D3Evaluation determines that domain is d3={ d31,d32, wherein d31Represent qualification, d32It represents unqualified；
Above-mentioned qualitative evaluation is converted into numerical value.
Second aspect, the present invention also provides a kind of electricity power engineering on-road efficiency evaluation systems of optimization grid structure, this is
System includes：
Data acquisition module for the actual motion electric power data for acquiring needs assessment；
Item for being evaluated the electricity power engineering project efficiency of the optimization grid structure according to the electric power data of acquisition
Mesh efficiency evaluation module, project efficiency evaluation index include improving grid structure contribution performance, the check of bayonet electric current than peace
Equal radius of electricity supply difference；
Item for being evaluated the electricity power engineering program result of the optimization grid structure according to the electric power data of acquisition
Mesh effect assessment module, effectiveness evaluation of project index include engineering transformer maximum load rate, engineering transformer average load
Rate, engineering circuit maximum load rate, engineering circuit Rate of average load, overhead transmission line loss, main transformer loss, peak load moment
Power factor, minimum load moment power factor and capacity-load ratio；
Project for being evaluated safely the project of the optimization grid structure engineering according to the electric power data of acquisition is pacified
The evaluation index of full evaluation module, project safety includes main transformer availability, circuit availability, busbar voltage qualification rate, power grid
Safety accident frequency, relay protection and stability control equipment malfunction and tripping number, transformer unplanned outage time, circuit
Unplanned outage hourage, the circuit unplanned outage frequency and line tripping rate；
For considering project efficiency, program result and project safety, to optimizing the operational effect of grid structure engineering
The overall merit module of overall merit.
The invention adopts the above technical scheme, which has the following advantages：1, of the invention from engineering project system function
The angle of positioning is set out, and proposes the electricity power engineering on-road efficiency evaluation method for optimization grid structure, solves this kind of work
The problem of journey is difficult to evaluate after putting into operation.2, the present invention establishes the electricity of optimization grid structure from three efficiency, effect, safety dimensions
Net engineering operation evaluation index can directly reflect maximum effect and practical hair that new construction project can play in power grid
The effect of waving, reflection engineering put optimization grid structure the contribution in face.3, the present invention is proposed for optimization grid structure engineering
The evaluation index being consistent with engineering construction original intention so that evaluation result can really reflect engineering actual motion benefit whether
Meet construction demand, avoids the problem that evaluation content is comprehensive but specific aim is not strong.4, the present invention is joined using based on index classification
The weight derivation algorithm that comparison method is combined with subjective and objective weight is examined, for determining subjective and objective influence factor in combining assessment index
Weight assemble calculating process, analytic hierarchy process (AHP) can be solved and made in practice using usually limited multistage dimension constraint,
Realize accurate weighted value under multiple index evaluation situation.5, evaluation index of the present invention is with strong points, and evaluation criterion is clear, weight
Determine that methodological science, evaluation result directly act on this engineering operational management from now on work, built to meeting power demand from now on
If management has important guiding effect.
Description of the drawings
Fig. 1 is the electricity power engineering on-road efficiency evaluation method flow diagram of the optimization grid structure of the present invention；
Fig. 2 is that the weight of the present invention combined with subjective and objective weight with reference to comparison method (ICRC) based on index classification solves calculation
Method flow diagram.
Specific implementation mode
Come to carry out detailed description to the present invention below in conjunction with attached drawing.It should be appreciated, however, that attached drawing has been provided only more
Understand the present invention well, they should not be interpreted as limitation of the present invention.
The present invention comments the electricity power engineering operational effect for optimizing grid structure from three efficiency, effect, safety dimensions
Valence.
Efficiency：The setting of efficiency evaluation index is intended to embody after engineering puts into operation, in the network system where the engineering, work
The maximum effect that Cheng Youhua network structures can play, evaluation result emphasis are directed toward the construction of engineering for optimizing regional power grid
Whether the ability of structure is notable.
Effect：The setting of Indexes of Evaluation Effect is intended to during embodying engineering operation, actual operating condition, evaluation knot
Whether the practical function for operating in optimization grid structure aspect performance that fruit emphasis is directed toward engineering meets construction demand.
Safety：The target setting of safety evaluation, which is intended to embody, is used as public infrastructure, and engineering is in safety, reliability
Etc. the case where, whether the security reliability that evaluation result emphasis is directed toward engineering meets the basic demand of electricity power engineering.
Embodiment 1
As shown in Figure 1, the electricity power engineering on-road efficiency evaluation method of optimization grid structure proposed by the present invention, including with
Lower content：
1, the actual motion electric power data of needs assessment is acquired.
2, the electricity power engineering project efficiency of the optimization grid structure is evaluated according to the electric power data of acquisition, project effect
Energy evaluation index includes improvement grid structure contribution performance, the check of bayonet electric current compares and average radius of electricity supply difference, each evaluation
Index is to the specific evaluation procedure of project efficiency：
1) improve grid structure and contribute performance
Calculate improves grid structure before and after engineering puts into operation to periphery power network wiring structure change situation, assessment item, improves
The contributing effect of power supply reliability and load transfer ability.Biradial think with Single-ring network, it is single-stranded be equal, dual-ring network and double-strand
Formula is equivalent.
σ=(- 1 or 0 or 1)
In formula, σ is to improve grid structure to contribute performance, carries out engineering Assessment of Important to σ, evaluation result is denoted as D11.When
After engineering puts into operation, σ=1, it is believed that grid structure becomes looped network or chain type from radiating, and engineering plays the role of Optimal network frame, D11=
100；When σ=0, it is believed that engineering construction does not change grid structure, D11=60；As σ=- 1, it is believed that grid structure is by looped network or chain
Formula becomes radiating, and engineering has attenuation, D to grid structure11=40.
2) bayonet electric current checks ratio
Calculate the ratio R of circuit operation actual current and circuit bayonet electric currentab, electric current supplies when evaluating this engineering normal operation
Answer greatest limit horizontal.Circuit bayonet electric current is by specified appearances of equipment such as circuit section, two end switch of circuit, mutual inductor, traps
The minimum value of amount determines.
Rab=Ca/Cb
In formula, CaActual current, C are run for circuitbFor circuit bayonet electric current.To RabEngineering is carried out by percentage value section
Assessment of Important, evaluation result are denoted as D12.Work as RabBetween 50%~90%, it is believed that engineering is important, D12=100；Work as RabBetween
Between 30%~50%, it is believed that more important, D12=80；Work as RabWhen less than 30%, it is believed that engineering is not too important, D12=40；
Work as RabWhen more than 90%, it is believed that there are design defect, efficiency plays a role more than safety standard, D engineering12=0.
3) average radius of electricity supply difference
Calculate engineering put into operation front and back substation's supply district average value of the geometric center to boundary difference Δ R, evaluation work
Journey shortens radius situation to regional power grid.
In formula, Δ R is that the engineering front and back regional power grid that puts into operation is averaged the difference of radius of electricity supply, unit km；S is engineering location
Domain powering area, unit km2, N is that engineering puts into operation total seat number of preceding region electricity grid substation, and it is important to carry out engineering to Δ R
Property evaluation, evaluation result is denoted as D13.When Δ R is more than 5km, it is believed that engineering is to shortening average radius of electricity supply significant effect, D13=
100；When Δ R is between 3~5km, it is believed that engineering is with obvious effects to the average radius of electricity supply of shortening, D13=80；Δ R between 1~3km,
Think that engineering is general to the average radius of electricity supply effect of shortening, D13=60；Δ R is less than 1km, it is believed that engineering is to shortening average power supply
Radius effect unobvious, D13=40.
4) determination of engineering efficiency evaluation index weights
The present invention carries out determining for index weights and refers to comparison method (ICRC) and subjective and objective weight using based on index classification
The weight derivation algorithm of combination is solved, it may be determined that a11、a12、a13Weighted value, wherein a11、a12、a13Respectively improve
Grid structure contributes performance, bayonet electric current to check ratio and average weight of radius of electricity supply 3 indexs of difference in efficiency evaluation,
And a11+a12+a13=1.
According to efficiency result of calculation evaluate the engineering construction for reinforce rack structure optimization ability effect it is whether notable, comment
Valence result D1It indicates：
D1=a11D11+a12D12+a13D13…a19D19
As evaluation result D1When >=80, it is believed that the construction of the engineering is notable for reinforcing rack structure optimization ability；When commenting
60≤D of valence result1When < 80, it is believed that the construction of the engineering is general for reinforcing rack structure optimization ability；As evaluation result D1
When < 60, it is believed that the construction of the engineering is poor for reinforcing rack structure optimization ability.
3, the electricity power engineering program result of the optimization grid structure is evaluated according to the electric power data of acquisition, project effect
Fruit evaluation index include engineering transformer maximum load rate, engineering transformer Rate of average load, engineering circuit maximum load rate,
Engineering circuit Rate of average load, overhead transmission line loss, main transformer loss, peak load moment power factor, minimum load moment work(
Rate factor and capacity-load ratio, each evaluation index are to the specific evaluation procedure of program result：
1) engineering transformer maximum load rate
Calculate engineering transformer maximum load rate μmax,t, the maximum load situation of evaluation engineering transformer.
μmax,t=Pmax,t/St
In formula, Pmax,tFor the peak load that transformer occurs, unit MW；StFor transformer rated capacity, unit MVA.
After transformer puts into operation 1 year, according to maximum load rate percentage interval assessment engineering operation effect, evaluation result is denoted as
D21.Work as μmax,tWhen more than 40%, it is believed that engineering transformer maximum load situation realizes the object of planning, main transformer capacity selection substantially
Rationally, engineering operation effect meets the expected requirements, D21=100；Otherwise expected requirement, D are not reached21=50.
2) Rate of average load of engineering transformer
Calculate the Rate of average load μ of engineering transformeravg,t, the average load situation of evaluation engineering transformer.
μavg,t=Pavg,t/St
In formula, μavg,tFor transformer Rate of average load；Pavg,tFor transformer annual load, unit MW；StFor transformer
Rated capacity, unit MVA.After transformer puts into operation 1 year, according to the Rate of average load percentage interval assessment engineering operation of transformer
Effect, evaluation result are denoted as D22.Work as μavg,tWhen more than or equal to 50%, it is believed that engineering transformer is heavily loaded for a long time, and operational effect is equal
Expected requirement, D are not met22=50；Work as μavg,tBetween 25%~50%, it is believed that engineering transformer load situation is reasonable,
Engineering operation effect meets the expected requirements, D22=100；Work as μavg,tWhen less than or equal to 25%, it is believed that engineering transformer is lightly loaded, fortune
Row effect does not meet expected requirement, D22=50.
3) circuit maximum load rate
Calculate circuit maximum load rate μmax,1, the maximum load situation of evaluation engineering circuit.
μmax,1=Pmax,1/S1
In formula, μmax,1For circuit maximum load rate；Pmax,lFor the peak load that circuit occurs, unit MW；SlFor circuit volume
Constant volume, unit MVA.After circuit puts into operation 1 year, according to circuit maximum load rate percentage interval assessment engineering operation effect, comment
Valence result is denoted as D23.Work as μmax,1More than area power grid with voltage class circuit maximum load rate mean value 60% when, it is believed that work
Journey circuit maximum load situation realizes that the object of planning, circuit type selecting are reasonable substantially, it is believed that engineering operation effect meets expection and wants
It asks, D23=100；It is on the contrary, it is believed that engineering operation effect does not meet expected requirement, D23=50.
4) circuit Rate of average load
Calculate circuit Rate of average load μavg,1, the average load situation of evaluation engineering circuit.
μavg,1=Pavg,1/S1
In formula, μavg,1For circuit Rate of average load；Pavg,lFor circuit annual load；SlFor circuit rated capacity.Circuit
After putting into operation 1 year, engineering operation effect is evaluated according to circuit Rate of average load percentage section, evaluation result is denoted as D24。
Work as μavg,lMore than area power grid with voltage class circuit Rate of average load mean value 60% when, it is believed that engineering circuit average load
Situation realizes that the object of planning, circuit type selecting are reasonable substantially, it is believed that engineering operation effect meets the expected requirements, D24=100；Conversely,
Think that engineering operation effect does not meet expected requirement, D24=50.
5) overhead transmission line is lost
It calculates overhead line path loss and consumes Ql,l, the reasonability of evaluation overhead transmission line loss.
Ql.l=Qin-Qout
In formula, Ql,lUnit MWh；QinElectricity, unit MWh are inputted for transformer；QoutElectricity, unit are exported for transformer
MWh.Engineering operation effect is evaluated according to overhead transmission line loss, evaluation result is denoted as D25.Work as Ql,lLess than or equal to same electricity
When pressing grade overhead transmission line average loss, it is believed that overhead transmission line loss is reasonable, and engineering operation effect meets the expected requirements, D25=
100；Work as Ql,lWhen more than same voltage class overhead transmission line average loss, it is believed that overhead transmission line loss is serious, engineering operation effect
Expected requirement, D are not met25=50.
6) main transformer is lost
It calculates main transformer and Q is lostl,t, the reasonability of evaluation main transformer loss.
Ql.t=Qin-Qout
In formula, Ql,tBased on become loss, unit MWh；QinElectricity, unit MWh are inputted for transformer；QoutIt is defeated for transformer
Go out electricity, unit MWh.Engineering operation effect is evaluated according to main transformer loss, evaluation result is denoted as D26.Work as Ql,tLess than etc.
In same voltage class, with capacity transformer average loss when, it is believed that main transformer loss is reasonable, D26=100；Work as Ql,tMore than same voltage
Grade, with capacity transformer average loss when, it is believed that main transformer loss is serious, D26=50.
7) peak load moment power factor
Calculate peak load moment power factorWhether the configuration of assessment item capacitive reactive power is enough：
In formula, S is the apparent energy of peak load moment equipment conveying, and unit MVA, P are peak load moment equipment
The active power of conveying, unit MW, Q are the reactive power of peak load moment equipment conveying, unit MVar.
Engineering operation effect assessment is carried out according to peak load moment power factor, evaluation result is denoted as D27.When
When more than or equal to 0.95, it is believed that the configuration of project capacitive reactive power is enough, and to reducing grid loss, the contribution for improving power quality is aobvious
It writes, engineering operation effect meets the expected requirements, D27=100；WhenWhen less than 0.95, it is believed that project capacitive reactive power configures
Or practical input is not enough, does not meet regulatory requirements, engineering operation effect does not meet expected requirement, D27=50.
8) minimum load moment power factor
Calculate minimum load moment power factorWhether the configuration of assessment item inductive reactive power is enough：
In formula, S is the apparent energy of minimum load moment equipment conveying, and unit MVA, P are minimum load moment equipment
The active power of conveying, unit MW, Q are the reactive power of minimum load moment equipment conveying, unit MVar.
Engineering operation effect assessment is carried out according to minimum load moment power factor, evaluation result is denoted as D28, when
When between 0.92 and 0.95, it is believed that the configuration of project inductive reactive power is reasonable, and operation switching is timely, and engineering operation effect meets
It is expected that requiring, D28=100；WhenWhen less than 0.92 or more than 0.95, it is believed that project reactive power compensator configuration capacity
Unreasonable or switching not in time, does not meet regulatory requirements, and engineering operation effect does not meet expected requirement, D28=50.
9) capacity-load ratio
Calculate engineering put into operation after a certain power supply area of power grid, same voltage class power grid public transformer equipment total capacity with
The ratio R s of corresponding total load (network for the load) evaluates the reasonability of Study on Power Grid Planning power transformation capacity.
Rs=∑ Sei/Pmax
In formula, Rs is capacity-load ratio；∑SeiFor voltage class peak load Daily treatment cost, unit MW；PmaxFor the voltage
The total capacity for the substation that grade annual peak load day puts into operation, unit MVA.Evaluation criterion reference《Urban power network is planned
Guidance Rule》(Q/GDW 156-2006), evaluation result is denoted as D29.Wherein, 500kV or more is calculated according to provincial power network,
330,220kV is calculated according to prefecture-level power grid, and 110 (35) kV are calculated according to County Power Grid.When Rs meets《Urban electric power network planning
Draw Guidance Rule》(Q/GDW 156-2006) standard, D29=100, when Rs is not met《Urban power network planning and designing directive/guide》
(Q/GDW 156-2006) standard, D29=0.
10) determination of effectiveness evaluation of project index weights
The present invention carries out determining for index weights and refers to what comparison method was combined with subjective and objective weight using based on index classification
Weight derivation algorithm is solved, it may be determined that a21、a22、a23、a24、a25、a26、a27、a28、a29Weighted value, wherein a21、
a22、a23、a24、a25、a26、a27、a28、a29Respectively engineering transformer maximum load rate, engineering transformer Rate of average load, work
Journey circuit maximum load rate, engineering circuit Rate of average load, overhead transmission line loss, main transformer loss, peak load moment power because
Number, weight of 9 indexs of minimum load moment power factor and capacity-load ratio in efficiency evaluation, and a21+a22+a23+a24+a25+
a26+a27+a28+a29=1.
Operating in for the engineering, which is evaluated, according to effect result of calculation optimizes whether region rack configuration aspects meet construction need
It asks, evaluation result D2It indicates.
D2=a21D21+a22D22+a23D23+a24D24+a25D25+a26D26+a27D27+a28D28+a29D29
As evaluation result D2When >=60, it is believed that the engineering operates in optimization grid structure meet demand；Work as evaluation result
D2When < 60, it is believed that the optimization grid structure that operates in of the engineering is unsatisfactory for demand.
4, the project of the optimization grid structure engineering is evaluated safely according to the electric power data of acquisition, project safety
Evaluation index includes main transformer availability, circuit availability, busbar voltage qualification rate, power grid safety accident frequency, relay guarantor
Shield and stability control equipment malfunction and tripping number, transformer unplanned outage time, circuit unplanned outage hourage, circuit are non-
The planned outage frequency and line tripping rate, each evaluation index are to the specific evaluation procedure of project safety：
1) main transformer availability
Calculate main transformer availability AT, evaluate the ability that transformer lasts use：
In formula：ATFor main transformer availability；μ is forced outage rate, unit times/year；TrFor failure mean repair time, unit
Hour/time；TΣAAdd up time between failures, unit hour for equipment；TΣIt puts into operation the time to be accumulative, unit hour, if work
When journey is related to more main transformers, simplifies in calculating and take each main transformer minimum value.Engineering safety reliability is carried out according to main transformer availability
Evaluation, evaluation result D31It indicates, works as ATMore than or equal to area power grid with type product availability average value when, it is believed that become
Depressor persistently uses ability good, and engineering safety reliability is excellent, D31=100；Work as ATIt can with type product less than area power grid
When the average value of expenditure, it is believed that transformer lasts are weaker using ability, transformer quality existing defects, D31=50.
2) circuit availability
Calculate circuit availability AL, evaluate the ability that circuit persistently uses.
In formula, u is forced outage rate, unit times/year；TrFor failure mean repair time, unit hour/time；TΣATo set
Standby accumulative time between failures, unit hour；TΣIt puts into operation the time to be accumulative, unit hour.According to circuit availability to engineering
Security reliability is evaluated, evaluation result D32It indicates, works as ALIt is flat more than or equal to area power grid same type circuit availability
When mean value, it is believed that circuit persistently uses ability good, and engineering safety reliability is excellent, D32=100；Work as ATLess than area power grid
When the average value of same type circuit availability, it is believed that circuit persistently uses ability weaker, and engineering safety reliability is unqualified, D32
=50.
3) busbar voltage qualification rate
Calculating project busbar A phase voltage qualification rates ηA, assessment item quality of voltage：
ηA(%)=(1-Tb/TΣ) * 100%
In formula, ηAFor project busbar A phase voltage qualification rates, TbFor voltage out-of-limit cumulative time, unit hour；TΣFor project
Total operating statistic time, unit hour.
Engineering safety reliability is evaluated according to busbar A phase voltages qualification rate, evaluation result is denoted as D33.Work as ηAIt is more than
When equal to 99.99%, it is believed that project busbar voltage qualification rate is good, and engineering safety reliability is excellent, D33=100；Work as ηABetween
When 99.95%-99.99%, it is believed that project busbar voltage qualification rate is qualified, it is believed that engineering safety reliability is excellent, D33=100；
Work as ηAWhen less than or equal to 99.95%, it is believed that project busbar voltage qualification rate is relatively low, and engineering safety reliability is unqualified, D33=
50。
4) power grid safety accident frequency
Count power grid safety accident frequency Ja, assessment item safety operation level.
According to power grid safety accident frequency, engineering safety reliability is evaluated, evaluation result is denoted as D34.It is right
According to《Electric power safety accident emergency is disposed and regulations of investigating》, when safety accident does not occur for project, it is believed that project is to power grid
Safety is without influence, and engineering safety reliability is excellent, D34=100；When the following accident of project generation ordinary accident, it is believed that project
Certain threat is constituted to electric power netting safe running, engineering safety reliability is excellent, D34=70；When special major accident, great occurs
Accident, compared with major break down when, it is believed that project endangers electric power netting safe running serious, and engineering safety reliability is unqualified, D34=0.
5) relay protection and stability control equipment malfunction and tripping number
Inside calculating project relay protection and stability control equipment or caused by engineering puts into operation in power grid other positions it is stable
The malfunction of device generation, tripping number JJ, relay protection and stability control equipment accuracy of action are evaluated, and to power grid security
The influence of stable operation.
Engineering safety reliability is evaluated according to relay protection and stability control equipment malfunction and tripping number, evaluation result
It is denoted as D35.Work as JJWhen equal to 0, indicate project on power network safety operation without influence, it is believed that engineering safety reliability is excellent,
D35=100；Work as JJWhen more than or equal to 1, expression project is affected to power network safety operation, it is believed that engineering safety is reliable
Unqualified, the D of property35=50.
6) the transformer unplanned outage time
Count transformer unplanned outage time ∑ Td.t, the ability of evaluation transformer holding safe and stable operation.
Engineering safety reliability is evaluated according to transformer unplanned outage hourage, evaluation result is denoted as D36.When
∑Td.tLess than regional transformer unplanned outage time average, it is believed that project transformer keeps the ability of safe and stable operation good
Good, engineering safety reliability is excellent, D36=100；As ∑ Td.tMore than or equal to regional transformer unplanned outage time average, recognize
Keep the ability of safe and stable operation poor for project transformer, engineering safety reliability is unqualified, D36=50.
7) circuit unplanned outage hourage
Circuit unplanned outage hourage ∑ Td.l, the ability of evaluation circuit holding safe and stable operation.
Engineering safety reliability is evaluated according to circuit unplanned outage hourage, evaluation result is denoted as D37.Work as ∑
Td.lLess than regional circuit unplanned outage time average, it is believed that project circuit keeps the ability of safe and stable operation good, work
Journey security reliability is excellent, D37=100；As ∑ Td.lMore than or equal to regional circuit unplanned outage time average, it is believed that project
Circuit keeps the ability of safe and stable operation poor, and engineering safety reliability is unqualified, D37=50.
8) the circuit unplanned outage frequency
Count circuit unplanned outage frequency fl, the ability of evaluation circuit holding safe and stable operation.
Engineering safety reliability is evaluated according to the circuit unplanned outage frequency, evaluation result is denoted as D38.Work as flIt is small
In regional circuit unplanned outage frequency mean value, it is believed that project circuit keeps the ability of safe and stable operation good, engineering safety
Reliability is excellent, D38=100；Work as flMore than or equal to regional circuit unplanned outage frequency mean value, it is believed that project circuit keeps peace
The ability of full stable operation is poor, and engineering safety reliability is unqualified, D38=50.
9) line tripping rate
The trip-out rate λ caused by circuit runs external environment or Insulation Problems is calculated, evaluation circuit response environment variation
Safe operation ability.
λ=M/T
In formula, λ is circuit Fei Benyin trip-out rates, unit times/year；During M is statistics, it is non-because of circuit self-capacity or
Trip total degree caused by Insulation Problems, and unit is secondary；T is evaluation time, and unit is year.According to line tripping rate to engineering
Security reliability is evaluated, and evaluation result is denoted as D39.When λ is less than 1, it is believed that the safe operation of circuit response environment variation
Ability is good, and engineering safety reliability is excellent, D39=100；When λ is between 1-3, it is believed that the safety of circuit response environment variation
Service ability is general, and engineering safety reliability is excellent, D39=100；When λ is more than or equal to 3, it is believed that circuit response environment changes
Safe operation ability it is poor, engineering safety reliability is unqualified, D39=50.
10) determination of project safety evaluation index weight
The present invention carries out determining for index weights and refers to what comparison method was combined with subjective and objective weight using based on index classification
Weight derivation algorithm is solved, and a can be obtained31、a32、a33、a34、a35、a36、a37、a38、a39Determining weighted value,
In, a31、a32、a33、a34、a35、a36、a37、a38、a39Respectively main transformer availability, circuit availability, busbar voltage qualification rate,
Power grid safety accident frequency, relay protection and stability control equipment malfunction and tripping number, the transformer unplanned outage time,
The power of 9 circuit unplanned outage hourage, the circuit unplanned outage frequency and line tripping rate indexs in safety evaluation
Weight, and a31+a32+a33+a34+a35+a36+a37+a38+a39=1.
Whether qualified, the evaluation result D that evaluates the engineering safety reliability according to safe result of calculation3It indicates.
D3=a31D31+a32D32+a33D33+a34D34+a35D35+a36D36+a37D37+a38D38+a39D39
As evaluation result D3When >=60, it is believed that the security reliability aspect that operates in of the engineering meets the basic of electricity power engineering
It is required that；As evaluation result D3When < 60, it is believed that the security reliability aspect that operates in of the engineering does not meet the basic of electricity power engineering
It is required that.
5, consider project efficiency, program result and project safety, it is comprehensive to the operational effect for optimizing grid structure engineering
Close evaluation.
1) operational effect overall merit numerical value is calculated, the calculation formula of operational effect overall merit is：
D=a1D1+a2D2+a3D3
Wherein, a1、a2、a3Respectively efficiency D1, effect D2, safe D3Weight, and define a1+a2+a3=1, using base
It is solved in the weight derivation algorithm that index classification is combined with reference to comparison method with subjective and objective weight.
2) D is determined1、D2、D3Evaluation approach domain
For efficiency D1Evaluation determines that evaluation approach domain is d1={ d11,d12,d13, wherein d11Represent important, d12Generation
Table is generally important, d13It represents inessential；
For effect D2Evaluation determines that domain is d2={ d21,d22, wherein d21Represent meet demand, d22It represents discontented
Sufficient demand；
For safe D3Evaluation determines that domain is d3={ d31,d32, wherein d31Represent qualification, d32It represents unqualified.
Above-mentioned qualitative evaluation is converted into numerical value, is subordinate to by three classes converts corresponding etc. be worth to respectively.In order to pull open difference
Score span between qualitative comment, the following three groups of score score values of setting correspond to：
Substitute into overall merit formula D=a1D1+a2D2+a3D3
As D < 60, it is believed that grid structure engineering operation effect is poor as an optimization for the engineering, should be according to efficiency D1, effect
Fruit D2, safe D3Evaluation result, the poor reason of concrete analysis operational effect, and carry out targetedly corrective measure.
As 60≤D < 80, it is believed that the optimization grid structure operational effect of the engineering is good, has certain safety and stability
Property, the construction of engineering has the function of optimizing grid structure, and the operation of engineering realizes optimization part to a certain extent
The function of grid structure.It should be according to efficiency D1, effect D2, safe D3Evaluation result, concrete analysis operational effect in terms of exist
The problem of, and carry out targetedly corrective measure.
As D >=80, it is believed that operational effect is good in terms of the engineering optimization grid structure, has preferable security and stability,
The construction of engineering significantly enhances the reasonable structure of regional power grid, and the operation of engineering adequately achieves optimization region
The function of electric network composition.
In above-described embodiment, for accurate comprehensively quantitative description evaluation index significance level, traditional evaluation method is improved
In subjective weight computations of the decision logic process based on trade-off decision person's preference index, according in decision psychology
First impression effect, the present invention proposes weight combine with subjective and objective weight with reference to comparison method based on index classification solution calculation
Method is solved, and determines that subjective weight, objective data analysis are commented using the data analysis of a variety of classics by expertise preference
Valence, by normalizing formula manipulation obtain consider evaluation data characteristic combining weights, may be implemented index quantity 20 with
Determine that reasonable weighted value, concrete principle are under interior evaluation：
As shown in Figure 2, it is assumed that sample to be evaluated shares i it needs to be determined that the index χ quantity of weight shares j, and j is little
In 20, and the weight vectors evaluated are W=[w1,w2...,wj]T, the detailed process for solving evaluation weight W is：
1) achievement data is pre-processed, specially：
1.1) Rejection index abnormal point specifically is added to be used as except twice of+2 σ of standard deviation μ using index deviation average and be sentenced
Severed finger scale value whether exceptional sample xoutlierStandard.
In formula, μ indicates that sample average, σ indicate sample standard deviation.
1.2) index unification is handled
According to comprehensive evaluation theory, index may belong to three types：" large " index Xmax, " type placed in the middle " index
Xmid, " minimal type " index Xmin.In order to make evaluation result be comparable, index doing mathematics are changed first, i.e. the one of index
Causeization processing, specially：
(1) if X belongs to minimal type index, the value e of the inverse of fetching mark x as unification：
(2) if X belongs to type index placed in the middle, the comparison result with the maximum value U of optimum range, minimum value u of fetching mark x
Value e as unification：
1.3) indices non-dimension
If the dimension between several evaluation indexes is different from the order of magnitude, need first to these index doing mathematics transformation at
Reason, is further continued for evaluating, specially after making its nondimensionalization：
In formula, xijThe jth for representing i-th of sample refers to target value, Mj=max { xij, mj=min { xij, eij∈[0,1]。
If encounter the case where index value is definite value, need to reject this index.
2) it is based on decisionmaker's preference information and calculates subjective weight, the present invention is based on ICRC to seek subjective weight；Wherein, divide
Class, with reference to the solution frame for comparing the two stages and constituting weight subjective experience decision.
2.1) index classification
According to expertise preliminary classification index, it is equipped with j evaluation index χ1,χ2,......,χj, according to expertise,
By the index χ under same criterionkClassify, is included into four different significance level levels respectively：Core level S1, support
Level S2, base level S3, weak rigidity level S4：
Si∈χk
According to the meaning and significance level characteristic distributions of each level, it is as follows to define principle of classification：
Principle of classification 1：Corresponding S1、S2、S3、S4The number ratio of indicator of distribution is：
Above formula b1Represent the index that core layer covers 20%, b2Represent the index that supporting layer covers 30%, b3Represent base
Plinth layer covers 40% index, b4The number for representing weak rigidity layer is then 10% overall performane.
Principle of classification 2：Corresponding S1、S2、S3、S4The weight of four levels is respectively：
The significance level p of core layer index is respectively represented in formula1It can be expressed as 40% criterion weight θ, supporting layer
The significance level p of index2It can be expressed as 30% criterion weight, the significance level p of basal layer index3It can be expressed as
20% criterion weight, the significance level p of weak rigidity layer index4It can be expressed as 10% criterion weight.
2.2) reference is compared
According to expertise, respective one most important index of selection is used as and refers to index χ respectively in four levelsWith reference to,
It can be to compare the importance of reference index as the judgment criterion of determining weight, i.e. remaining index compares two-by-two with reference index
It sums by row compared with scoring, then by index score value, obtains each index scoring summation, be finally weighted average treatment, acquire finger
The subjective weight coefficient ν of markk。
After hierarchical with respective standard index χWith reference toRelatively scoring score value is set as mk,
mk=χk/χWith reference to
Wherein, score value mkStandards of grading such as following table：
1 RC methods of table scoring score table
| It is important | It is important | It is not too important | Compared to inessential |
| 0.9 | 0.6 | 0.3 | 0.1 |
Obtain evaluation vector：
αi=[m1...,mk,...]T
Weighted value, θ are calculated after scoringiFor SiThe weight summation distributed, piFor SiThe weight percentage distributed,
K=1 is defined, if Si∈χkCorresponding score value mk, νkFor subjective weight coefficient：
Obtained subjective weight is：V=[ν1,ν2...,νj]T。
3) calculating of the objective weight based on evaluation data, that is, pass through parameter variance, comentropy and grey relational grade
Value, objective weight is obtained by weighted average.
(1) parameter variance：
In formula, μ representative sample subscripts, k represents index subscript, eμkIt represents the μ sample kth and refers to target value
(2) parameter comentropy：
(3) parameter grey relational grade：
Δk(q)=| X0(q)-Xk(q)|
In formula, k represents index subscript, X0(q) it is the index value of reference sequence, ξk(q) it is incidence coefficient, ρ is to differentiate to be
Number, usually takes ρ=0.5.
Compare the degree of association that sequence corresponds to reference sequencesValue generally indicates with average, i.e.,：
(5) weighted average of objective weight is integrated：
Obtained objective weight is：F=[f1,f2...,fj]T。
4) the subjective and objective weight combination based on normalization formula, detailed process are：
4.1) normalization formula calculates combining weights：
It is W=[w to acquire weight vectors1,w2...,wj]T。
Embodiment 2
The present invention also provides a kind of electricity power engineering on-road efficiency evaluation system of optimization grid structure, which includes：
Data acquisition module for the actual motion electric power data for acquiring needs assessment；
Item for being evaluated the electricity power engineering project efficiency of the optimization grid structure according to the electric power data of acquisition
Mesh efficiency evaluation module, project efficiency evaluation index include improving grid structure contribution performance, the check of bayonet electric current than peace
Equal radius of electricity supply difference；
Item for being evaluated the electricity power engineering program result of the optimization grid structure according to the electric power data of acquisition
Mesh effect assessment module, effectiveness evaluation of project index include engineering transformer maximum load rate, engineering transformer average load
Rate, engineering circuit maximum load rate, engineering circuit Rate of average load, overhead transmission line loss, main transformer loss, peak load moment
Power factor, minimum load moment power factor and capacity-load ratio；
Project for being evaluated safely the project of the optimization grid structure engineering according to the electric power data of acquisition is pacified
The evaluation index of full evaluation module, project safety includes main transformer availability, circuit availability, busbar voltage qualification rate, power grid
Safety accident frequency, relay protection and stability control equipment malfunction and tripping number, transformer unplanned outage time, circuit
Unplanned outage hourage, the circuit unplanned outage frequency and line tripping rate；
For considering project efficiency, program result and project safety, to optimizing the operational effect of grid structure engineering
The overall merit module of overall merit.
In a preferred embodiment, the specific evaluation procedure of project efficiency evaluation module is：
It calculates and performance σ is contributed to periphery power network wiring structure change situation i.e. grid structure before and after engineering puts into operation, according to σ
Evaluation engineering importance, evaluation result are denoted as D11, whether notable for the effect for optimizing grid structure according to the construction of the engineering
To D11Value be configured；
Calculate the ratio R of circuit operation actual current and circuit bayonet electric currentab：
Rab=Ca/CB
In formula, CaActual current, C are run for circuitbFor circuit bayonet electric current, according to RabThe importance of evaluation engineering, is commented
Valence result is denoted as D12, according to the construction of the engineering for whether optimizing the effect of grid structure significantly to D12Value set
It sets；
Calculate engineering put into operation front and back substation's supply district average value of the geometric center to boundary difference Δ R：
In formula, Δ R is that the engineering front and back regional power grid that puts into operation be averaged the difference of radius of electricity supply, and S is engineering region power supply face
Product, N are that engineering puts into operation total seat number of preceding region electricity grid substation, and engineering Assessment of Important, evaluation knot are carried out according to Δ R
Fruit is denoted as D13, according to the construction of the engineering for whether optimizing the effect of grid structure significantly to D13Value be configured；
D is calculated according to the above results1：D1=a11D11+a12D12+a13D13, according to D1The engineering construction is evaluated for reinforcing
Reinforce rack structure optimization ability effect, in formula, a11、a12、a13Respectively improve grid structure contribution performance, bayonet electric current school
Core is than the weight with average radius of electricity supply difference in efficiency evaluation, a11+a12+a13=1, according to D1With the comparison knot of preset value
Fruit evaluates the construction of the engineering for reinforcing rack structure optimization ability.
In a preferred embodiment, the specific evaluation procedure of effectiveness evaluation of project module is：
Calculate engineering transformer maximum load rate μmax,t：μmax,t=Pmax,t/St, in formula, μmax,tIt is negative for transformer maximum
Load rate；Pmax,tFor the peak load that transformer occurs, StFor transformer rated capacity, transformer puts into operation after preset time, according to
Interval assessment engineering operation effect, evaluation result residing for maximum load rate are denoted as D21, it is pre- according to whether engineering operation effect reaches
Phase is to D21Value be configured；
Calculate the Rate of average load μ of engineering transformeravg,t：μavg,t=Pavg,t/St, in formula, μavg,tIt is averagely negative for transformer
Load rate；Pavg,tFor transformer annual load, StFor transformer rated capacity, transformer puts into operation the setting time limit time, according to change
Interval assessment engineering operation effect, evaluation result residing for the Rate of average load of depressor are denoted as D22, according to engineering operation effect whether
It reaches expected to D22Value be configured；
Calculate circuit maximum load rate μmax,1：μmax,1=Pmax,1/S1, in formula, μmax,1For circuit maximum load rate；Pmax,l
For the peak load that circuit occurs, SlFor circuit rated capacity, circuit puts into operation after the setting time limit, according to circuit maximum load rate
Residing interval assessment engineering operation effect, evaluation result are denoted as D23, whether reached according to engineering operation effect expected to D23's
Value is configured；
Calculate circuit Rate of average load μavg,1：μavg,1=Pavg,1/S1, in formula, μavg,1For circuit Rate of average load；Pavg,l
For circuit annual load；SlFor circuit rated capacity circuit；It puts into operation after setting the time limit, according to circuit Rate of average load percentage
Engineering operation effect is evaluated in section, and evaluation result is denoted as D24, whether reached according to engineering operation effect expected to D24
Value be configured；
It calculates overhead line path loss and consumes Ql,l：Ql.l=Qin-Qout, in formula, QinElectricity, Q are inputted for transformeroutFor transformer
Electricity is exported, engineering operation effect is evaluated according to overhead transmission line loss, evaluation result is denoted as D25, according to engineering operation
Whether effect reaches expected to D25Value be configured；
It calculates main transformer and Q is lostl,t, Ql.t=Qin-Qout, Q in formulainElectricity, unit MWh are inputted for transformer；QoutFor transformation
Device exports electricity, is evaluated engineering operation effect according to main transformer loss, evaluation result is denoted as D26；
Calculate peak load moment power factor
In formula, S is the apparent energy of peak load moment equipment conveying, and P is the active of peak load moment equipment conveying
Power, Q are the reactive power of peak load moment equipment conveying, and engineering operation is carried out according to peak load moment power factor
Effect assessment, evaluation result are denoted as D27, whether reached according to engineering operation effect expected to D27Value be configured；
Calculate minimum load moment power factor
In formula, S is the apparent energy of minimum load moment equipment conveying, and P is the active of minimum load moment equipment conveying
Power, Q are the reactive power of minimum load moment equipment conveying, and engineering operation is carried out according to minimum load moment power factor
Effect assessment, evaluation result are denoted as D28, whether reached according to engineering operation effect expected to D28Value be configured；
Calculate engineering put into operation after a certain power supply area of power grid, same voltage class power grid public transformer equipment total capacity with
The ratio R s of corresponding total load：
Rs=∑ Sei/Pmax
In formula, ∑ SeiFor voltage class peak load Daily treatment cost；PmaxIt is thrown for the voltage class annual peak load day
The total capacity for entering the substation of operation, according to photograph《Urban power network planning and designing directive/guide》Q/GDW 156-2006 row engineerings are transported
Row effect assessment, evaluation result are denoted as D29, whether reached according to engineering operation effect expected to D29Value be configured；
D is calculated according to These parameters2, according to D2Engineering effort evaluation is carried out with the comparison result of predetermined threshold value： D2=
a21D21+a22D22+a23D23+a24D24+a25D25+a26D26+a27D27+a28D28+a29D29, wherein a21、a22、 a23、a24、a25、a26、
a27、a28、a29Respectively engineering transformer maximum load rate, engineering transformer Rate of average load, engineering circuit maximum load rate,
Engineering circuit Rate of average load, overhead transmission line loss, main transformer loss, peak load moment power factor, minimum load moment work(
The weight of rate factor and capacity-load ratio in efficiency evaluation, a21+a22+a23+a24+a25+a26+a27+a28+a29=1.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer journey
Sequence product.Therefore, complete hardware embodiment, complete software embodiment or combining software and hardware aspects can be used in the application
The form of embodiment.Moreover, the application can be used in one or more wherein include computer usable program code calculating
The computer program implemented in machine usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The application is with reference to method, the flow of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions each in flowchart and/or the block diagram
The combination of flow and/or box in flow and/or box and flowchart and/or the block diagram.These computers can be provided
Processor of the program instruction to all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices
To generate a machine so that the instruction executed by computer or the processor of other programmable data processing devices generates
For realizing the function of being specified in one flow of flow chart or multiple flows and/or one box of block diagram or multiple boxes
Device.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction stored in the computer readable memory, which generates, includes
The manufacture of command device, the command device are realized in one flow of flow chart or multiple flows and/or one box of block diagram
Or the function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer
Or the instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or box
The step of function of being specified in one box of figure or multiple boxes.The various embodiments described above are merely to illustrate the present invention, wherein method
Each implementation steps etc. may be changed, every equivalents carried out based on the technical solution of the present invention
And improvement, it should not exclude except protection scope of the present invention.
Claims (10)
1. a kind of electricity power engineering on-road efficiency evaluation method of optimization grid structure, it is characterised in that including the following contents：
Acquire the actual motion electric power data of needs assessment；
The electricity power engineering project efficiency of the optimization grid structure is evaluated according to the electric power data of acquisition, project efficiency evaluation
Index includes improving grid structure contribution performance, bayonet electric current check ratio and average radius of electricity supply difference；
The electricity power engineering program result of the optimization grid structure is evaluated according to the electric power data of acquisition, effectiveness evaluation of project
Index includes engineering transformer maximum load rate, engineering transformer Rate of average load, engineering circuit maximum load rate, engineering circuit
Rate of average load, overhead transmission line loss, main transformer loss, peak load moment power factor, minimum load moment power factor and
Capacity-load ratio；
The project of the optimization grid structure engineering is evaluated safely according to the electric power data of acquisition, the evaluation of project safety refers to
Mark includes main transformer availability, circuit availability, busbar voltage qualification rate, power grid safety accident frequency, relay protection and peace
Stabilization device malfunction and tripping number, transformer unplanned outage time, circuit unplanned outage hourage, circuit unplanned outage
The frequency and line tripping rate；
Project efficiency, program result and project safety are considered, to optimizing the operational effect overall merit of grid structure engineering.
2. a kind of electricity power engineering on-road efficiency evaluation method of optimization grid structure as described in claim 1, which is characterized in that
The electricity power engineering project efficiency of the optimization grid structure is evaluated according to the electric power data of acquisition, specific evaluation procedure is：
It calculates and performance σ is contributed to periphery power network wiring structure change situation i.e. grid structure before and after engineering puts into operation, work is evaluated according to σ
Journey importance, evaluation result are denoted as D11, according to the construction of the engineering for whether optimizing the effect of grid structure significantly to D11's
Value is configured；
Calculate the ratio R of circuit operation actual current and circuit bayonet electric currentab：
Rab=Ca/Cb
In formula, CaActual current, C are run for circuitbFor circuit bayonet electric current, according to RabThe importance of evaluation engineering, evaluation result
It is denoted as D12, according to the construction of the engineering for whether optimizing the effect of grid structure significantly to D12Value be configured；
Calculate engineering put into operation front and back substation's supply district average value of the geometric center to boundary difference Δ R：
In formula, Δ R is that the engineering front and back regional power grid that puts into operation is averaged the difference of radius of electricity supply, and S is engineering region powering area, N
Put into operation total seat number of preceding region electricity grid substation for engineering, carries out engineering Assessment of Important according to Δ R, evaluation result is denoted as
D13, according to the construction of the engineering for whether optimizing the effect of grid structure significantly to D13Value be configured；
D is calculated according to the above results1：D1=a11D11+a12D12+a13D13, according to D1The engineering construction is evaluated for reinforcing reinforcing mat
Frame structure optimization ability effect, in formula, a11、a12、a13Respectively improve grid structure contribution performance, bayonet electric current check ratio and
Average weight of the radius of electricity supply difference in efficiency evaluation, a11+a12+a13=1, according to D1It is evaluated with the comparison result of preset value
The construction of the engineering is for reinforcing rack structure optimization ability.
3. a kind of electricity power engineering on-road efficiency evaluation method of optimization grid structure as described in claim 1, which is characterized in that
The specific evaluation procedure evaluated the electricity power engineering program result of the optimization grid structure according to the electric power data of acquisition is：
Calculate engineering transformer maximum load rate μmax,t：μmax,t=Pmax,t/St, in formula, μmax,tFor transformer maximum load rate；
Pmax,tFor the peak load that transformer occurs, StFor transformer rated capacity, transformer puts into operation after preset time, negative according to maximum
Interval assessment engineering operation effect, evaluation result residing for load rate are denoted as D21, whether reached according to engineering operation effect expected to D21
Value be configured；
Calculate the Rate of average load μ of engineering transformeravg,t：μavg,t=Pavg,t/St, in formula, μavg,tFor transformer average load
Rate；Pavg,tFor transformer annual load, StFor transformer rated capacity, transformer puts into operation the setting time limit time, according to transformation
Interval assessment engineering operation effect, evaluation result residing for the Rate of average load of device are denoted as D22, whether arrived according to engineering operation effect
Up to expected to D22Value be configured；
Calculate circuit maximum load rate μmax,1：μmax,1=Pmax,1/S1, in formula, μmax,1For circuit maximum load rate；Pmax,lFor line
The peak load that road occurs, SlFor circuit rated capacity, circuit puts into operation after the setting time limit, according to area residing for circuit maximum load rate
Between evaluation engineering operational effect, evaluation result is denoted as D23, whether reached according to engineering operation effect expected to D23Value set
It sets；
Calculate circuit Rate of average load μavg,1：μavg,1=Pavg,1/S1, in formula, μavg,1For circuit Rate of average load；Pavg,lFor line
Road annual load；SlFor circuit rated capacity circuit；It puts into operation after setting the time limit, according to circuit Rate of average load percentage section pair
Engineering operation effect is evaluated, and evaluation result is denoted as D24, whether reached according to engineering operation effect expected to D24Value carry out
Setting；
It calculates overhead line path loss and consumes Ql,l：Ql.l=Qin-Qout, in formula, QinElectricity, Q are inputted for transformeroutElectricity is exported for transformer
Amount evaluates engineering operation effect according to overhead transmission line loss, and evaluation result is denoted as D25, according to engineering operation effect whether
It reaches expected to D25Value be configured；
It calculates main transformer and Q is lostl,t, Ql.t=Qin-Qout, Q in formulainElectricity, unit MWh are inputted for transformer；QoutIt is defeated for transformer
Go out electricity, engineering operation effect is evaluated according to main transformer loss, evaluation result is denoted as D26；
Calculate peak load moment power factor
In formula, S is the apparent energy of peak load moment equipment conveying, and P is the active power of peak load moment equipment conveying,
Q is the reactive power of peak load moment equipment conveying, and carrying out engineering operation effect according to peak load moment power factor comments
Valence, evaluation result are denoted as D27, whether reached according to engineering operation effect expected to D27Value be configured；
Calculate minimum load moment power factor
In formula, S is the apparent energy of minimum load moment equipment conveying, and P is the active power of minimum load moment equipment conveying,
Q is the reactive power of minimum load moment equipment conveying, and carrying out engineering operation effect according to minimum load moment power factor comments
Valence, evaluation result are denoted as D28, whether reached according to engineering operation effect expected to D28Value be configured；
Calculate engineering put into operation after a certain power supply area of power grid, same voltage class power grid public transformer equipment total capacity with it is corresponding
Total load ratio R s：
Rs=∑ Sei/Pmax
In formula, ∑ SeiFor voltage class peak load Daily treatment cost；PmaxIt puts into operation for the voltage class annual peak load day
Substation total capacity, according to photograph《Urban power network planning and designing directive/guide》Q/GDW 156-2006 row engineering operation effects are commented
Valence, evaluation result are denoted as D29, whether reached according to engineering operation effect expected to D29Value be configured；
D is calculated according to These parameters2, according to D2Engineering effort evaluation is carried out with the comparison result of predetermined threshold value：D2=a21D21+
a22D22+a23D23+a24D24+a25D25+a26D26+a27D27+a28D28+a29D29, wherein a21、a22、a23、a24、a25、a26、a27、a28、
a29Respectively engineering transformer maximum load rate, engineering transformer Rate of average load, engineering circuit maximum load rate, engineering circuit
Rate of average load, overhead transmission line loss, main transformer loss, peak load moment power factor, minimum load moment power factor and
Weight of the capacity-load ratio in efficiency evaluation, a21+a22+a23+a24+a25+a26+a27+a28+a29=1.
4. a kind of electricity power engineering on-road efficiency evaluation method of optimization grid structure as described in claim 1, which is characterized in that
The specific evaluation procedure evaluated safely the project of the optimization grid structure engineering according to the electric power data of acquisition is：
Calculate main transformer availability AT：
In formula：μ is forced outage rate, TrFor failure mean repair time, TΣAAdd up time between failures, T for equipmentΣIt is tired
Meter puts into operation the time, is evaluated engineering safety reliability according to main transformer availability, evaluation result D31It indicates, is pacified according to engineering
Full reliability standard is to D31Value is determined；
Calculate circuit availability AL：
In formula, u is forced outage rate, TrFor failure mean repair time, TΣAAdd up time between failures, T for equipmentΣIt is tired
Meter puts into operation the time, is evaluated engineering safety reliability according to circuit availability, evaluation result D31It indicates, is pacified according to engineering
Full reliability standard is to D32Value is determined；
Calculating project busbar A phase voltage qualification rates ηA：ηA(%)=(1-Tb/TΣ) * 100%, in formula, ηAFor project busbar A phase electricity
Press qualification rate, TbFor voltage out-of-limit cumulative time, TΣFor project total operating statistic time, according to busbar A phase voltage qualification rates pair
Engineering safety reliability is evaluated, and evaluation result is denoted as D33, according to engineering safety reliability standard to D33Value is determined；
Count power grid safety accident frequency Ja, according to power grid safety accident frequency, engineering safety reliability is commented
Valence, evaluation result are denoted as D34, according to engineering safety reliability standard to D34Value is determined；
Inside calculating project relay protection and stability control equipment or caused by engineering puts into operation in power grid other positions stability control equipment
The malfunction of generation, tripping number JJ, according to relay protection and stability control equipment malfunction and tripping number to engineering safety reliability into
Row evaluation, evaluation result are denoted as D35, according to engineering safety reliability standard to D35Value is determined；
Count transformer unplanned outage time ∑ Td.t, according to transformer unplanned outage hourage to engineering safety reliability
It is evaluated, evaluation result is denoted as D36, according to engineering safety reliability standard to D36Value is determined；
Obtain circuit unplanned outage hourage ∑ Td.l, according to circuit unplanned outage hourage to engineering safety reliability into
Row evaluation, evaluation result are denoted as D37, according to engineering safety reliability standard to D37Value is determined；
Count circuit unplanned outage frequency fl, engineering safety reliability is evaluated according to the circuit unplanned outage frequency, is commented
Valence result is denoted as D38, according to engineering safety reliability standard to D38Value is determined；
Calculate the trip-out rate caused by circuit runs external environment or Insulation Problems：λ=M/T, in formula, λ is that circuit Fei Benyin is jumped
Lock rate, during M is statistics, the non-total degree that trips caused by circuit self-capacity or Insulation Problems, T is evaluation time, root
Engineering safety reliability is evaluated according to line tripping rate, evaluation result is denoted as D39, according to engineering safety reliability standard pair
D39Value is determined；
Engineering safety evaluation, evaluation result D are carried out according to These parameters3It indicates：D3=a31D31+a32D32+a33D33+a34D34+
a35D35+a36D36+a37D37+a38D38+a39D39, wherein a31、a32、a33、a34、a35、a36、a37、a38、a39Respectively main transformer is available
It degree, circuit availability, busbar voltage qualification rate, power grid safety accident frequency, relay protection and stability control equipment malfunction and refuses
Dynamic number, transformer unplanned outage time, circuit unplanned outage hourage, the circuit unplanned outage frequency and line tripping
Weight of 9 indexs of rate in safety evaluation, and a31+a32+a33+a34+a35+a36+a37+a38+a39=1；According to D3With preset value
Comparison result whether evaluate the engineering safety reliability qualified.
5. the electricity power engineering on-road efficiency evaluation method of optimization grid structure as described in claim 1, which is characterized in that according to
The evaluation result of project efficiency, program result and project safety imitates the transregional operation for reinforcing passway for transmitting electricity electricity power engineering transprovincially
Fruit overall merit, detailed process are：
1) operational effect overall merit numerical value is calculated, the calculation formula of operational effect overall merit is：
D=a1D1+a2D2+a3D3
Wherein, a1、a2、a3Respectively project efficiency D1, program result D2, the safe D of project3Weight, a1+a2+a3=1；
2) when D < set minimum threshold, it is believed that grid structure engineering operation effect is poor as an optimization for the engineering；
When setting minimum threshold≤D < setting max-thresholds, it is believed that the optimization grid structure operational effect of the engineering is good；
When D >=setting max-thresholds, it is believed that operational effect is good in terms of the engineering optimization grid structure.
6. the electricity power engineering on-road efficiency evaluation method of optimization grid structure as claimed in claim 5, which is characterized in that described
a1、a2、a3The weight derivation algorithm combined with subjective and objective weight with reference to comparison method using index classification is solved to obtain.
7. the electricity power engineering on-road efficiency evaluation method of optimization grid structure as claimed in claim 5, which is characterized in that counting
Before calculating operational effect overall merit numerical value D, further comprise：
Determine D1、D2、D3Evaluation approach domain；
For efficiency D1Evaluation determines that evaluation approach domain is d1={ d11,d12,d13, wherein d11Represent important, d12Represent one
As important, d13It represents inessential；
For effect D2Evaluation determines that domain is d2={ d21,d22, wherein d21Represent meet demand, d22Representative is unsatisfactory for demand；
For safe D3Evaluation determines that domain is d3={ d31,d32, wherein d31Represent qualification, d32It represents unqualified；
Above-mentioned qualitative evaluation is converted into numerical value.
8. a kind of electricity power engineering on-road efficiency evaluation system of optimization grid structure, which is characterized in that the system includes：
Data acquisition module for the actual motion electric power data for acquiring needs assessment；
Project for being evaluated the electricity power engineering project efficiency of the optimization grid structure according to the electric power data of acquisition is imitated
Energy evaluation module, project efficiency evaluation index is checked including improvement grid structure contribution performance, bayonet electric current to be compared and averagely powers
Radial difference；
Project for being evaluated the electricity power engineering program result of the optimization grid structure according to the electric power data of acquisition is imitated
Fruit evaluation module, effectiveness evaluation of project index include engineering transformer maximum load rate, engineering transformer Rate of average load, engineering
Circuit maximum load rate, engineering circuit Rate of average load, overhead transmission line loss, main transformer loss, peak load moment power factor,
Minimum load moment power factor and capacity-load ratio；
Project for being evaluated safely the project of the optimization grid structure engineering according to the electric power data of acquisition is commented safely
The evaluation index of valence module, project safety includes main transformer availability, circuit availability, busbar voltage qualification rate, power grid security thing
Therefore frequency, relay protection and stability control equipment malfunction and tripping number, transformer unplanned outage time, circuit is unplanned stops
Transport hourage, the circuit unplanned outage frequency and line tripping rate；
For considering project efficiency, program result and project safety, the operational effect to optimizing grid structure engineering integrates
The overall merit module of evaluation.
9. the electricity power engineering on-road efficiency evaluation system of optimization grid structure as claimed in claim 8, which is characterized in that described
The specific evaluation procedure of project efficiency evaluation module is：
It calculates and performance σ is contributed to periphery power network wiring structure change situation i.e. grid structure before and after engineering puts into operation, work is evaluated according to σ
Journey importance, evaluation result are denoted as D11, according to the construction of the engineering for whether optimizing the effect of grid structure significantly to D11's
Value is configured；
Calculate the ratio R of circuit operation actual current and circuit bayonet electric currentab：
Rab=Ca/Cb
In formula, CaActual current, C are run for circuitbFor circuit bayonet electric current, according to RabThe importance of evaluation engineering, evaluation result
It is denoted as D12, according to the construction of the engineering for whether optimizing the effect of grid structure significantly to D12Value be configured；
Calculate engineering put into operation front and back substation's supply district average value of the geometric center to boundary difference Δ R：
In formula, Δ R is that the engineering front and back regional power grid that puts into operation is averaged the difference of radius of electricity supply, and S is engineering region powering area, N
Put into operation total seat number of preceding region electricity grid substation for engineering, carries out engineering Assessment of Important according to Δ R, evaluation result is denoted as
D13, according to the construction of the engineering for whether optimizing the effect of grid structure significantly to D13Value be configured；
D is calculated according to the above results1：D1=a11D11+a12D12+a13D13, according to D1The engineering construction is evaluated for reinforcing reinforcing mat
Frame structure optimization ability effect, in formula, a11、a12、a13Respectively improve grid structure contribution performance, bayonet electric current check ratio and
Average weight of the radius of electricity supply difference in efficiency evaluation, a11+a12+a13=1, according to D1It is evaluated with the comparison result of preset value
The construction of the engineering is for reinforcing rack structure optimization ability.
10. a kind of electricity power engineering on-road efficiency evaluation method of optimization grid structure as claimed in claim 8, feature exist
In the specific evaluation procedure of the effectiveness evaluation of project module is：
Calculate engineering transformer maximum load rate μmax,t：μmax,t=Pmax,t/St, in formula, μmax,tFor transformer maximum load rate；
Pmax,tFor the peak load that transformer occurs, StFor transformer rated capacity, transformer puts into operation after preset time, negative according to maximum
Interval assessment engineering operation effect, evaluation result residing for load rate are denoted as D21, whether reached according to engineering operation effect expected to D21
Value be configured；
Calculate the Rate of average load μ of engineering transformeravg,t：μavg,t=Pavg,t/St, in formula, μavg,tFor transformer average load
Rate；Pavg,tFor transformer annual load, StFor transformer rated capacity, transformer puts into operation the setting time limit time, according to transformation
Interval assessment engineering operation effect, evaluation result residing for the Rate of average load of device are denoted as D22, whether arrived according to engineering operation effect
Up to expected to D22Value be configured；
Calculate circuit maximum load rate μmax,1：μmax,1=Pmax,1/S1, in formula, μmax,1For circuit maximum load rate；Pmax,lFor line
The peak load that road occurs, SlFor circuit rated capacity, circuit puts into operation after the setting time limit, according to area residing for circuit maximum load rate
Between evaluation engineering operational effect, evaluation result is denoted as D23, whether reached according to engineering operation effect expected to D23Value set
It sets；
Calculate circuit Rate of average load μavg,1：μavg,1=Pavg,1/S1, in formula, μavg,1For circuit Rate of average load；Pavg,lFor line
Road annual load；SlFor circuit rated capacity circuit；It puts into operation after setting the time limit, according to circuit Rate of average load percentage section pair
Engineering operation effect is evaluated, and evaluation result is denoted as D24, whether reached according to engineering operation effect expected to D24Value carry out
Setting；
It calculates overhead line path loss and consumes Ql,l：Ql.l=Qin-Qout, in formula, QinElectricity, Q are inputted for transformeroutElectricity is exported for transformer
Amount evaluates engineering operation effect according to overhead transmission line loss, and evaluation result is denoted as D25, according to engineering operation effect whether
It reaches expected to D25Value be configured；
It calculates main transformer and Q is lostl,t, Ql.t=Qin-Qout, Q in formulainElectricity, unit MWh are inputted for transformer；QoutIt is defeated for transformer
Go out electricity, engineering operation effect is evaluated according to main transformer loss, evaluation result is denoted as D26；
Calculate peak load moment power factor
In formula, S is the apparent energy of peak load moment equipment conveying, and P is the active power of peak load moment equipment conveying,
Q is the reactive power of peak load moment equipment conveying, and carrying out engineering operation effect according to peak load moment power factor comments
Valence, evaluation result are denoted as D27, whether reached according to engineering operation effect expected to D27Value be configured；
Calculate minimum load moment power factor
In formula, S is the apparent energy of minimum load moment equipment conveying, and P is the active power of minimum load moment equipment conveying,
Q is the reactive power of minimum load moment equipment conveying, and carrying out engineering operation effect according to minimum load moment power factor comments
Valence, evaluation result are denoted as D28, whether reached according to engineering operation effect expected to D28Value be configured；
Calculate engineering put into operation after a certain power supply area of power grid, same voltage class power grid public transformer equipment total capacity with it is corresponding
Total load ratio R s：
Rs=∑ Sei/Pmax
In formula, ∑ SeiFor voltage class peak load Daily treatment cost；PmaxIt puts into operation for the voltage class annual peak load day
Substation total capacity, according to photograph《Urban power network planning and designing directive/guide》Q/GDW 156-2006 row engineering operation effects are commented
Valence, evaluation result are denoted as D29, whether reached according to engineering operation effect expected to D29Value be configured；
D is calculated according to These parameters2, according to D2Engineering effort evaluation is carried out with the comparison result of predetermined threshold value：D2=a21D21+
a22D22+a23D23+a24D24+a25D25+a26D26+a27D27+a28D28+a29D29, wherein a21、a22、a23、a24、a25、a26、a27、a28、
a29Respectively engineering transformer maximum load rate, engineering transformer Rate of average load, engineering circuit maximum load rate, engineering circuit
Rate of average load, overhead transmission line loss, main transformer loss, peak load moment power factor, minimum load moment power factor and
Weight of the capacity-load ratio in efficiency evaluation, a21+a22+a23+a24+a25+a26+a27+a28+a29=1.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107316125A (en) * | 2017-05-12 | 2017-11-03 | 燕山大学 | A kind of active distribution network economical operation evaluation method based on economical operation domain |
| CN107871214A (en) * | 2017-12-04 | 2018-04-03 | 深圳供电局有限公司 | One kind is provided multiple forms of energy to complement each other energy supplying system System of Comprehensive Evaluation method for building up |
| CN107909253A (en) * | 2017-11-02 | 2018-04-13 | 国网天津市电力公司电力科学研究院 | Intelligent distribution network scheduling controlling effect evaluation method based on interval based AHP |
-
2018
- 2018-04-23 CN CN201810367072.8A patent/CN108717597B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107316125A (en) * | 2017-05-12 | 2017-11-03 | 燕山大学 | A kind of active distribution network economical operation evaluation method based on economical operation domain |
| CN107909253A (en) * | 2017-11-02 | 2018-04-13 | 国网天津市电力公司电力科学研究院 | Intelligent distribution network scheduling controlling effect evaluation method based on interval based AHP |
| CN107871214A (en) * | 2017-12-04 | 2018-04-03 | 深圳供电局有限公司 | One kind is provided multiple forms of energy to complement each other energy supplying system System of Comprehensive Evaluation method for building up |
Non-Patent Citations (2)
| Title |
|---|
| 梁耀林 等: "电网基建项目投资效益评价模型研究及应用", 《现代工业经济和信息化》 * |
| 穆永铮 等: "基于多算子层次分析模糊评价的电网安全与效益综合评价指标体系", 《电网技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264981A (en) * | 2021-11-12 | 2022-04-01 | 上海电力大学 | Health state evaluation system of regional power grid power transformer based on cloud edge fusion |
| CN114264981B (en) * | 2021-11-12 | 2024-04-26 | 上海电力大学 | Regional power grid power transformer health state evaluation system based on cloud edge fusion |
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| CN108717597B (en) | 2021-12-07 |
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