CN108492056A - A kind of ferroelectric power supply grid engineering operation Benefit Evaluation Method and system - Google Patents
A kind of ferroelectric power supply grid engineering operation Benefit Evaluation Method and system Download PDFInfo
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Abstract
The present invention relates to a kind of ferroelectric power supply grid engineering operation Benefit Evaluation Method and systems, it is characterised in that including the following contents：Acquire the actual motion electric power data of needs assessment；The ferroelectric supply project efficiency is evaluated according to the electric power data of acquisition；The ferroelectric power supply grid engineering project effect is evaluated according to the electric power data of acquisition；The project of the ferroelectric power supply engineering is evaluated safely according to the electric power data of acquisition；Project efficiency, program result and project safety are considered, to meeting the operational effect overall merit of power demand.
Description
Technical field
The present invention relates to a kind of ferroelectric power supply grid engineering operation Benefit Evaluation Method and systems, are related to electrical grid transmission skill
Art 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 and uses
Electricity demanding engineering evaluates all engineerings for the more demanding of load factor, using unified index and standard, has ignored project
Functional attributes feature, can not provide and targetedly suggest for the follow-up construction of such engineering, such evaluation method cannot fill
Divide whether the basic goal of reflection project construction is realized；Another kind of is that electricity power engineering project is divided into common network engineering, special project
Project of transmitting and converting electricity and networking project divide its effect in power grid, to each work from the space of engineering and physical layer
Journey is set separately different evaluation indexes and carries out project operation benefit evaluation, and this kind of evaluation method granularity is thicker, without abundant
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 to the present
The operation and construction of such engineering are offered reference afterwards.In addition, the index involved in above two method does not set evaluation criterion,
Evaluation procedure is 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 ferroelectric power supply grid engineering operation Benefit Evaluation Method and system of accurate evaluation.
To achieve the above object, the present invention takes following technical scheme：
In a first aspect, the present invention provides a kind of ferroelectric power supply grid engineering operation Benefit Evaluation Method, including the following contents：
Acquire the actual motion electric power data of needs assessment；The ferroelectric supply project efficiency is commented according to the electric power data of acquisition
Valence, wherein project efficiency evaluation index includes newly-increased number of, lines system accounting, newly-increased line length system accounting and buckle electricity
Stream verification ratio；The ferroelectric power supply grid engineering project effect is evaluated according to the electric power data of acquisition, wherein program result
Evaluation index includes engineering transformer maximum load rate, circuit maximum load rate, overhead transmission line loss, off line electricity, maximum negative
Lotus moment power factor, minimum load moment power factor and influence power quality examine number；According to the electric power data of acquisition
The project of the ferroelectric power supply engineering is evaluated safely, wherein the evaluation index of project safety includes circuit availability, busbar
It is rate of qualified voltage, power grid safety accident frequency, relay protection and stability control equipment malfunction and tripping number, unplanned to circuit
Stoppage in transit hourage, the circuit unplanned outage frequency and to line tripping rate；Consider project efficiency, program result and project peace
Entirely, to meeting the operational effect overall merit of power demand.
Further, the ferroelectric supply project efficiency is evaluated according to the electric power data of acquisition, specific evaluation procedure
For：
It calculates and increases number of, lines system accounting K newlyl1：Kl1=Cl/ΣCl, in formula, Σ ClIt is system before putting into operation with voltage etc.
Grade number of, lines, ClNumber of, lines is increased newly for this engineering, according to Kl1Evaluation engineering importance, evaluation result are denoted as D11；
It calculates and increases the proportion K that line length accounts for system line total length newlyl2：Kl2=Ll/∑Ll, in formula, Σ LlTo put into operation
Preceding system is the same as voltage class line length, LlLine length is increased newly for this engineering, according to Kl2Evaluation engineering importance, evaluation result
It is denoted as D12；
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 RabEngineering Assessment of Important is carried out,
Evaluation result is denoted as D13；
According to efficiency result of calculation evaluate the engineering construction for ensure ferroelectric safe operation power supply capacity it is whether notable,
Evaluation result D1It indicates：
D1=a11D11+a12D12+a13D13
According to D1It is whether notable for reinforcing channel ability to transmit electricity effect to evaluate the engineering construction, in formula, a11、a12、a13Point
Number of, lines system accounting, newly-increased line length system accounting and grid structure optimizing index Wei not increased newly in efficiency evaluation
Weight, a11+a12+a13=1.
Further, the ferroelectric power supply grid engineering project effect 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,tFor 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 most
Interval assessment engineering operation effect, evaluation result residing for heavy load rate are denoted as D21, whether expection is reached according to engineering operation effect
To D21Value 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 institute
Locate interval assessment engineering operation effect, evaluation result is denoted as D22, whether reached according to engineering operation effect expected to D22Value into
Row setting；
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 D23, imitated according to engineering operation
Whether fruit reaches expected to D23Value be configured；
Calculate the off line electricity Q obtained from power grid after engineering puts into operationdown, according to off line electricity QdownTo engineering operation effect
It is evaluated, evaluation result is denoted as D24, whether reached according to engineering operation effect expected to D24Value be configured；
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 is the reactive power of peak load moment equipment conveying, according to peak load moment power factorCarry out work
Journey operational effect is evaluated, and evaluation result is denoted as D25, whether reached according to engineering operation effect expected to D25Value 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 effect is carried out according to minimum load moment power factor
Fruit is evaluated, and evaluation result is denoted as D26, whether reached according to engineering operation effect expected to D26Value be configured；
Calculating, which influences power quality, examines number J, and engineering operation effect is carried out according to influencing power quality examination number
Evaluation, evaluation result are denoted as D27, whether reached according to engineering operation effect expected to D27Value 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, wherein a21、a22、a23、a24、a25、a26、a27Respectively engineering
Transformer maximum load rate, circuit maximum load rate, overhead transmission line loss, off line electricity, peak load moment power factor, most
The weight of Smaller load moment power factor and influence power quality examination number in effect assessment, and a21+a22+a23+a24+a25
+a26+a27=1, according to D2Evaluate whether the engineering engineering operation effect reaches expection with the comparison result of preset value.
Further, the specific mistake project of the ferroelectric power supply engineering evaluated safely according to the electric power data of acquisition
Cheng Wei：
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 work
Journey security reliability degree is to D31Value 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 rate, TbFor voltage out-of-limit cumulative time, TΣIt is qualified according to busbar A phase voltages for project total operating statistic time
Rate evaluates engineering safety reliability, and evaluation result is denoted as D32, according to engineering safety reliability standard to D32Value carries out true
It is fixed；
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 D33, according to engineering safety reliability standard to D33Value 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, reliable to engineering safety according to relay protection and stability control equipment malfunction and tripping number
Property is evaluated, and evaluation result is denoted as D34, according to engineering safety reliability standard to D34Value 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 D35, according to engineering safety reliability standard to D35Value 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 D36, according to engineering safety reliability standard to D36Value 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 D37, according to engineering safety reliability journey
Degree is to D37Value is determined；
Engineering safety evaluation, evaluation result D are carried out according to These parameters3It indicates：D3=a31D31+a32D32+a33D33+
a34D34+a35D35+a36D36+a37D37, wherein a31、a32、a33、a34、a35、a36、a37Respectively circuit availability, busbar voltage are closed
Lattice rate, power grid safety accident frequency, relay protection and stability control equipment malfunction and tripping number, circuit unplanned outage hour
Number, weight of 7 indexs of the circuit unplanned outage frequency and line tripping rate in safety evaluation, and a31+a32+a33+a34+a35
+a36+a37=1；According to D3It is whether qualified that the engineering safety reliability is evaluated with the comparison result of preset value.
Further, it according to project efficiency, the evaluation result of program result and project safety, transmits electricity to transregional reinforcement transprovincially
The operational effect overall merit of 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 the engineering is poor as ferroelectric power supply engineering operational effect；
When setting minimum threshold≤D ＜ setting max-thresholds, it is believed that the ferroelectric powered operation of the engineering works well；
When D >=setting max-thresholds, it is believed that the ferroelectric powered operation effect of the engineering is fine.
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, 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.
Second aspect, the present invention also provides a kind of ferroelectric power supply grid engineering operation benefit evaluation system, including it is following interior
Hold：Data acquisition module for the actual motion electric power data for acquiring needs assessment；For the electric power data pair according to acquisition
The project efficiency evaluation module that the ferroelectric supply project efficiency is evaluated, wherein project efficiency evaluation index includes newly-increased line
Road quantity system accounting, newly-increased line length system accounting and buckle electric current verify ratio；For the electric power data pair according to acquisition
The effectiveness evaluation of project module that the ferroelectric power supply grid engineering project effect is evaluated, wherein effectiveness evaluation of project index packet
Include engineering transformer maximum load rate, circuit maximum load rate, overhead transmission line loss, off line electricity, peak load moment power
Factor, minimum load moment power factor and influence power quality examine number；For according to the electric power data of acquisition to the electricity
The project safety evaluation module that the project of iron power supply engineering is evaluated safely, wherein the evaluation index of project safety includes line
Road availability, busbar voltage qualification rate, power grid safety accident frequency, relay protection and stability control equipment malfunction and tripping time
It counts, to circuit unplanned outage hourage, the circuit unplanned outage frequency and to line tripping rate；For considering project effect
Energy, program result and project safety, the overall merit module of the operational effect overall merit to meeting power demand.
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 to be directed to ferroelectric power supply grid engineering operation Benefit Evaluation Method, is solved this kind of engineering and is put into operation
After the problem of being difficult to evaluate.2, the present invention establishes ferroelectric power supply grid engineering operation and comments from three efficiency, effect, safety dimensions
Valence index can directly reflect maximum effect and actually play a role that new construction project can play in power grid, and reflect work
Journey is for the contribution 3 for meeting ferroelectric operation, the evaluation of the invention being consistent with engineering construction original intention for ferroelectric power supply engineering, proposition
Index so that evaluation result can really reflect whether the actual motion benefit of engineering meets construction demand, avoid in evaluation
Hold comprehensive but not strong specific aim problem.4, the present invention refers to what comparison method was combined with subjective and objective weight using based on index classification
Weight derivation algorithm can be solved for determining that the weight of subjective and objective influence factor in combining assessment index assembles calculating process
Analytic hierarchy process (AHP), using usually limited multistage dimension constraint, to realize and accurately weigh under multiple index evaluation situation in practice
Weight values.5, evaluation index of the present invention is with strong points, and evaluation criterion is clear, and Weight Determination science, evaluation result directly acts on
It works in the operational management from now on of this engineering, there is important guiding effect to the implementation management of ferroelectric power supply engineering from now on.
Description of the drawings
Fig. 1 is the ferroelectric power supply grid engineering operation Benefit Evaluation Method flow diagram 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 evaluates ferroelectric power supply grid engineering operation effect from three efficiency, effect, safety dimensions.
Efficiency：The setting of efficiency evaluation index is intended to embody after engineering puts into operation, in the network system where the engineering, engineering
The maximum effect that can be played in terms of providing quality power for ferroelectric safe operation, evaluation result emphasis are directed toward the construction of engineering
Whether the ability for ensureing ferroelectric safe operation is notable.
Effect：The setting of Indexes of Evaluation Effect is intended to during embodying engineering operation, actual operating condition, evaluation result
Emphasis is directed toward whether operating in for engineering meets construction demand for the practical function of ferroelectric power supply aspect performance.
Safety：The target setting of safety evaluation, which is intended to embody, is used as public infrastructure, and engineering is in safety, reliability etc.
Whether the security reliability of the case where aspect, evaluation result emphasis direction engineering meet the basic demand of ferroelectric safe operation.
Embodiment 1
As shown in Figure 1, ferroelectric power supply grid engineering operation Benefit Evaluation Method proposed by the present invention, including the following contents：
1, the actual motion electric power data of needs assessment is acquired.
2, ferroelectric supply project efficiency is evaluated according to the electric power data of acquisition, project efficiency evaluation index includes new
Increase number of, lines system accounting, newly-increased line length system accounting and buckle electric current and verify ratio, each evaluation index imitates project
Can specific evaluation procedure be：
1) number of, lines system accounting is increased newly
It calculates and increases the accounting K that number of, lines accounts for system line quantity newlyl1, evaluate this engineering and increase number of, lines newly to place system
The contributing effect of system.
Kl1=Cl/ΣCl
In formula, Σ ClIt is system before putting into operation with voltage class number of, lines, ClNumber of, lines is increased newly for this engineering.To Kl1It presses
Percentage value section carries out engineering Assessment of Important, and evaluation result is denoted as D11.Work as Kl1When more than 10%, it is believed that engineering is important, D11=
100；Work as Kl1Between 5%~10%, it is believed that engineering is more important, D11=80；Work as Kl1Between 3%~5%, it is believed that general
It is important, D11=60；Work as Kl1When less than 3%, it is believed that engineering is not too important, D11=40.
2) line length system accounting is increased newly
It calculates and increases the proportion K that line length accounts for system line total length newlyl2, evaluate this engineering and increase line length newly to place
The contributing effect of system.
Kl2=Ll/∑Ll
In formula, Σ LlIt is system before putting into operation with voltage class line length, LlLine length is increased newly for this engineering.To Kl2It presses
Percentage value section carries out engineering Assessment of Important, and evaluation result is denoted as D12.Work as Kl2When more than 10%, it is believed that engineering is important, D12=
100；Work as Kl2Between 5%~10%, it is believed that engineering is more important, D12=80；Work as Kl2Between 3%-5%, it is believed that general weight
It wants, D12=60；Work as Kl2When less than 3%, it is believed that engineering is not too important, D12=40.
3) 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 weight is carried out by percentage value section
The property wanted is evaluated, and evaluation result is denoted as D13.Work as RabBetween 50%~90%, it is believed that engineering is important, D13=100；Work as RabBetween 30%
Between~50%, it is believed that more important, D13=80；Work as RabWhen less than 30%, it is believed that engineering is not too important, D13=40；Work as RabGreatly
When 90%, it is believed that there are design defect, efficiency plays a role more than safety standard, D engineering13=0.
4) determination of engineering efficiency evaluation index weights
The determination that the present invention carries out index weights uses ICRC (Index Classification and Reference
Comparation, index classification refer to comparison method) the weight derivation algorithm that is combined with subjective and objective weight solved, and it can be true
Determine a11、a12And a13Weighted value, wherein a11、a12、a13Respectively newly-increased number of, lines system accounting, newly-increased line length system
Accounting of uniting and bayonet electric current check weight of than 3 indexs in efficiency evaluation, and a11+a12+a13=1.
According to efficiency result of calculation evaluate the engineering construction for ensure ferroelectric safe operation power supply capacity it is whether notable,
Evaluation result D1It indicates：
D1=a11D11+a12D12+a13D13
As evaluation result D1When >=80, it is believed that the construction of the engineering is notable for the effect of service ferroelectric operation；Work as evaluation
As a result 60≤D1When ＜ 80, it is believed that the construction of the engineering is general for the effect of service ferroelectric operation；As evaluation result D1＜ 60
When, it is believed that the construction of the engineering is poor for the effect of service ferroelectric operation.
3, the ferroelectric power supply grid engineering project effect is evaluated according to the electric power data of acquisition, effectiveness evaluation of project
Index includes engineering transformer maximum load rate, circuit maximum load rate, overhead transmission line loss, off line electricity, busy hour
It carves power factor, minimum load moment power factor and influences power quality and examine number, each evaluation index is to program result
Specific evaluation procedure be：
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 50%, 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) 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, evaluation
As a result it is denoted as D22.WhenMore than area power grid with voltage class circuit maximum load rate mean value 50% when, it is believed that engineering circuit
Maximum 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, D22=
100；It is on the contrary, it is believed that engineering operation effect does not meet expected requirement, D22=50.
3) 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 D23.Work as Ql,lLess than or equal to same voltage
When grade overhead transmission line average loss, it is believed that overhead transmission line loss is reasonable, and engineering operation effect meets the expected requirements, D23=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, and engineering operation effect is not met
It is expected that requiring, D23=50.
4) off line electricity
Calculate the off line electricity Q obtained from power grid after engineering puts into operationdown, the direct work of evaluation ferroelectric power supply engineering performance
With.
QdownUnit MWh.Engineering operation effect is evaluated according to off line electricity, evaluation result is denoted as D24.Work as Qdown
More than or equal to same voltage class ferroelectric power supply engineering be averaged off line electricity when, it is believed that off line electricity is reasonable, engineering operation effect symbol
Close expected requirement, D24=100；Work as QdownLess than same voltage class ferroelectric power supply engineering be averaged off line electricity when, it is believed that off line electricity
Measure relatively low, engineering operation effect does not meet expected requirement, D24=50.
5) 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 D25.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, D25=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, D25=50.
6) 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 D26, 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 pre-
Phase requires, D26=100；WhenWhen less than 0.92 or more than 0.95, it is believed that project reactive power compensator configuration capacity does not conform to
Reason or switching not in time, do not meet regulatory requirements, engineering operation effect does not meet expected requirement, D26=50.
7) it influences power quality and examines number
Calculating, which influences power quality, examines number J, influence of the evaluation Traction Station to power quality.
Engineering operation effect assessment is carried out according to influencing power quality examination number, evaluation result is denoted as D27.When J is 0
When secondary, it is believed that influence control of the Traction Station to power quality is fine, D27=100；When J is not 0, it is believed that Traction Station is to electric energy matter
The influence of amount is serious, and engineering operation effect does not meet expected requirement, D27=50.
8) 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、a27Weighted value, wherein a21、a22、a23、
a24、a25、a26、a27Respectively engineering transformer maximum load rate, circuit maximum load rate, overhead transmission line loss, off line electricity,
Peak load moment power factor, minimum load moment power factor and influence power quality examine this 7 indexs of number imitating
Weight in fruit evaluation, and a21+a22+a23+a24+a25+a26+a27=1.
Operating in for the engineering, which is evaluated, according to effect result of calculation ensures whether ferroelectric normal operation aspect meets construction need
It asks, evaluation result D2It indicates.
D2=a21D21+a22D22+a23D23+a24D24+a25D25+a26D26+a27D27
As evaluation result D2When >=60, it is believed that operating in for the engineering ensures ferroelectric normal operation aspect meet demand；When
Evaluation result D2When ＜ 60, it is believed that operating in for the engineering ensures to be unsatisfactory for construction demand in terms of ferroelectric normal operation.
4, the project of the ferroelectric power supply engineering is evaluated safely according to the electric power data of acquisition, the evaluation of project safety
Index includes circuit availability, busbar voltage qualification rate, power grid safety accident frequency, relay protection and stability control equipment malfunction
And tripping number, to circuit unplanned outage hourage, the circuit unplanned outage frequency and to line tripping rate, each evaluation refers to
It marks and is to the specific evaluation procedure of project safety：
1) 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 D31It 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, D31=100；Work as ATIt is same less than area power grid
When the average value of type line availability, it is believed that circuit persistently uses ability weaker, and engineering safety reliability is unqualified, D31=
50。
2) 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 D32.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, D32=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, D32=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, D32=50.
3) 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 D33.Control
《Electric power safety accident emergency is disposed and regulations of investigating》(State Council Decree the 599th), when safety accident does not occur for project,
Think project on power grid security without influence, engineering safety reliability is excellent, D33=100；When the following thing of ordinary accident occurs for project
Therefore when, it is believed that project constitutes certain threat to electric power netting safe running, and engineering safety reliability is excellent, D33=70；It is special when occurring
Major accident, major accident, compared with major break down when, it is believed that project endangers electric power netting safe running serious, and engineering safety reliability is not
Qualification, D33=0.
4) 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 steady to power grid security
Surely the influence run.
Engineering safety reliability is evaluated according to relay protection and stability control equipment malfunction and tripping number, evaluation result
It is denoted as D34.Work as JJWhen equal to 0, indicate project on power network safety operation without influence, it is believed that engineering safety reliability is excellent, D34
=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 reliability is not
Qualification, D34=50.
5) 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 D35.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, engineering
Security reliability is excellent, D35=100；As ∑ Td.lMore than or equal to regional circuit unplanned outage time average, it is believed that project circuit
Keep the ability of safe and stable operation poor, engineering safety reliability is unqualified, D35=50.
6) 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 D36.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, D36=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, D36=50.
7) 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；It is non-because of circuit self-capacity or exhausted during M is statistics
Trip total degree caused by edge problem, and unit is secondary；T is evaluation time, and unit is year.According to line tripping rate to engineering safety
Reliability is evaluated, and evaluation result is denoted as D37.When λ is less than 1, it is believed that the safe operation ability of circuit response environment variation is good
Good, engineering safety reliability is excellent, D37=100；When λ is between 1-3, it is believed that the safe operation ability of circuit response environment variation
Generally, engineering safety reliability is excellent, D37=100；When λ is more than or equal to 3, it is believed that the safe operation of circuit response environment variation
Ability is poor, and engineering safety reliability is unqualified, D37=50.
8) 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、a37Determining weighted value, wherein a31、a32、
a33、a34、a35、a36、a37Respectively circuit availability, busbar voltage qualification rate, power grid safety accident frequency, relay protection
With stability control equipment malfunction and tripping number, circuit unplanned outage hourage, the circuit unplanned outage frequency and line tripping rate 7
Weight of the item index in safety evaluation, and a31+a32+a33+a34+a35+a36+a37=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
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, the operational effect to meeting power demand, which integrates, to be commented
Valence.
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 based on
Index classification is solved with reference to the weight derivation algorithm that the subjective and objective weight of comparison method combines.
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, 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, 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 the engineering is poor as ferroelectric power supply engineering operational effect, should be according to efficiency D1, effect 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 ferroelectric powered operation effect of the engineering is good, has certain security and stability, work
The construction of journey has the function of ensureing ferroelectric normal operation.It should be according to efficiency D1, effect D2, safe D3Evaluation result, specific point
Analyse operational effect in terms of there are the problem of, and carry out targetedly corrective measure.
As D >=80, it is believed that the ferroelectric powered operation effect of the engineering is fine, has preferable security and stability, engineering
Construction ferroelectric safe and stable operation is effectively ensured.
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 propose based on index classification with reference to comparison method subjective and objective weight combine weight derivation algorithm into
Row solves, and determines that subjective weight, objective data analysis are evaluated using the data analysis of a variety of classics by expertise preference, warp
The combining weights that normalizing formula manipulation obtains considering evaluation data characteristic are crossed, the commenting within 20 in index quantity may be implemented
Determine that reasonable weighted value, concrete principle are under valence：
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 not more than
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 is specific to be added except twice of+2 σ of standard deviation μ as judgement using index deviation average
Index 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, fetching mark x's makees with the maximum value U of optimum range, the comparison result of minimum value u
For the value e of 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, supporting layer
Grade 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 basis
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,
Can to compare the importance of reference index as the judgment criterion for determining weight, i.e., remaining index and reference index two-by-two compared with
Scoring, then index score value is summed by row, each index scoring summation is obtained, average treatment is finally weighted, acquires index
Subjective weight coefficient νk。
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：
Table 1RC methods 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 ferroelectric power supply grid engineering operation benefit evaluation systems, including the following contents：
Data acquisition module for the actual motion electric power data for acquiring needs assessment；
Project efficiency evaluation module for being evaluated the ferroelectric supply project efficiency according to the electric power data of acquisition；
Program result for being evaluated the ferroelectric power supply grid engineering project effect according to the electric power data of acquisition
Evaluation module；
Project for being evaluated safely the project of the ferroelectric power supply engineering according to the electric power data of acquisition is commented safely
Valence module；
For considering project efficiency, program result and project safety, the operational effect to meeting power demand integrates
The overall merit module of evaluation.
In a preferred embodiment, project efficiency evaluation module powers item to the ferroelectric according to the electric power data of acquisition
Mesh efficiency is evaluated, and specific evaluation procedure is：
It calculates and increases number of, lines system accounting K newlyl1：Kl1=Cl/ΣCl, in formula, Σ ClIt is system before putting into operation with voltage etc.
Grade number of, lines, ClNumber of, lines is increased newly for this engineering, according to Kl1Evaluation engineering importance, evaluation result are denoted as D11, according to this
Whether the construction of engineering is for servicing the effect of ferroelectric operation significantly to D11Value be configured；
It calculates and increases the proportion K that line length accounts for system line total length newlyl2：Kl2=Ll/∑Ll, in formula, Σ LlTo put into operation
Preceding system is the same as voltage class line length, LlLine length is increased newly for this engineering, according to Kl2Evaluation engineering importance, evaluation result
It is denoted as D12, according to the construction of the engineering for whether servicing the effect of ferroelectric operation significantly to D12Value 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 RabEngineering Assessment of Important is carried out,
Evaluation result is denoted as D13, according to the construction of the engineering for whether servicing the effect of ferroelectric operation significantly to D13Value set
It sets；
According to efficiency result of calculation evaluate the engineering construction for ensure ferroelectric safe operation power supply capacity it is whether notable,
Evaluation result D1It indicates：
D1=a11D11+a12D12+a13D13
According to D1It is whether notable for reinforcing channel ability to transmit electricity effect to evaluate the engineering construction, in formula, a11、a12、a13Point
Number of, lines system accounting, newly-increased line length system accounting and grid structure optimizing index Wei not increased newly in efficiency evaluation
Weight, a11+a12+a13=1, according to D1The construction of the engineering is evaluated for service ferroelectric operation with the comparison result of preset value
Whether effect is notable.
In a preferred embodiment, effectiveness evaluation of project module powers to the ferroelectric according to the electric power data of acquisition electric
The specific evaluation procedure that net engineering project effect is evaluated 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, according to most
Interval assessment engineering operation effect, evaluation result residing for heavy load rate are denoted as D21, whether expection is reached according to engineering operation effect
To D21Value 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 institute
Locate interval assessment engineering operation effect, evaluation result is denoted as D22, whether reached according to engineering operation effect expected to D22Value into
Row setting；
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 D23, imitated according to engineering operation
Whether fruit reaches expected to D23Value be configured；
Calculate the off line electricity Q obtained from power grid after engineering puts into operationdown, according to off line electricity QdownTo engineering operation effect
It is evaluated, evaluation result is denoted as D24, whether reached according to engineering operation effect expected to D24Value be configured；
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 is the reactive power of peak load moment equipment conveying, according to peak load moment power factorCarry out work
Journey operational effect is evaluated, and evaluation result is denoted as D25, whether reached according to engineering operation effect expected to D25Value 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 effect is carried out according to minimum load moment power factor
Fruit is evaluated, and evaluation result is denoted as D26, whether reached according to engineering operation effect expected to D26Value be configured；
Calculating, which influences power quality, examines number J, and engineering operation effect is carried out according to influencing power quality examination number
Evaluation, evaluation result are denoted as D27, whether reached according to engineering operation effect expected to D27Value 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, wherein a21、a22、a23、a24、a25、a26、a27Respectively engineering
Transformer maximum load rate, circuit maximum load rate, overhead transmission line loss, off line electricity, peak load moment power factor, most
The weight of Smaller load moment power factor and influence power quality examination number in effect assessment, and a21+a22+a23+a24+a25
+a26+a27=1, according to D2Evaluate whether the engineering engineering operation effect reaches expection with the comparison result of preset value.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, the application can be used in one or more wherein include computer usable program code computer
The computer program production implemented in 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 every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
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 generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize 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 block diagram one
The step of function of being specified in a box or multiple boxes.The various embodiments described above are merely to illustrate the present invention, and wherein method is each
Implementation steps etc. may be changed, and every equivalents carried out based on the technical solution of the present invention and change
Into should not exclude except protection scope of the present invention.
Claims (10)
1. a kind of ferroelectric power supply grid engineering operation Benefit Evaluation Method, it is characterised in that including the following contents：
Acquire the actual motion electric power data of needs assessment；
The ferroelectric supply project efficiency is evaluated according to the electric power data of acquisition, wherein project efficiency evaluation index includes
Newly-increased number of, lines system accounting, newly-increased line length system accounting and buckle electric current verify ratio；
The ferroelectric power supply grid engineering project effect is evaluated according to the electric power data of acquisition, wherein effectiveness evaluation of project
Index includes engineering transformer maximum load rate, circuit maximum load rate, overhead transmission line loss, off line electricity, busy hour
It carves power factor, minimum load moment power factor and influences power quality and examine number；
The project of the ferroelectric power supply engineering is evaluated safely according to the electric power data of acquisition, wherein the evaluation of project safety
Index includes circuit availability, busbar voltage qualification rate, power grid safety accident frequency, relay protection and stability control equipment malfunction
And tripping number, to circuit unplanned outage hourage, the circuit unplanned outage frequency and to line tripping rate；
Project efficiency, program result and project safety are considered, to meeting the operational effect overall merit of power demand.
2. ferroelectric power supply grid engineering operation Benefit Evaluation Method according to claim 1, which is characterized in that according to acquisition
Electric power data the ferroelectric supply project efficiency is evaluated, specific evaluation procedure is：
It calculates and increases number of, lines system accounting K newlyl1：Kl1=Cl/ΣCl, in formula, Σ ClIt is system before putting into operation with voltage class circuit
Quantity, ClNumber of, lines is increased newly for this engineering, according to Kl1Evaluation engineering importance, evaluation result are denoted as D11, according to the engineering
The effect for service ferroelectric operation is built whether significantly to D11Value be configured；
It calculates and increases the proportion K that line length accounts for system line total length newlyl2：Kl2=Ll/∑Ll, in formula, Σ LlFor system before putting into operation
With voltage class line length, LlLine length is increased newly for this engineering, according to Kl2Evaluation engineering importance, evaluation result are denoted as
D12, according to the construction of the engineering for whether servicing the effect of ferroelectric operation significantly to D12Value 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 RabCarry out engineering Assessment of Important, evaluation knot
Fruit is denoted as D13, according to the construction of the engineering for whether servicing the effect of ferroelectric operation significantly to D13Value be configured；
The engineering construction is evaluated for ensureing whether the power supply capacity of ferroelectric safe operation is notable according to efficiency result of calculation, is evaluated
As a result D is used1It indicates：
D1=a11D11+a12D12+a13D13
According to D1It is whether notable for reinforcing channel ability to transmit electricity effect to evaluate the engineering construction, in formula, a11、a12、a13Respectively
Newly-increased number of, lines system accounting, the newly-increased power of line length system accounting and grid structure optimizing index in efficiency evaluation
Weight, a11+a12+a13=1, according to D1Work of the construction for service ferroelectric operation of the engineering is evaluated with the comparison result of preset value
With whether significantly.
3. ferroelectric power supply grid engineering operation Benefit Evaluation Method according to claim 1, which is characterized in that according to acquisition
Electric power data specific evaluation procedure that the ferroelectric power supply grid engineering project effect is evaluated be：
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 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 D22, whether reached according to engineering operation effect expected to D22Value set
It sets；
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 D23, according to engineering operation effect whether
It reaches expected to D23Value be configured；
Calculate the off line electricity Q obtained from power grid after engineering puts into operationdown, according to off line electricity QdownEngineering operation effect is carried out
Evaluation, evaluation result are denoted as D24, whether reached according to engineering operation effect expected to D24Value be configured；
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, according to peak load moment power factorCarry out engineering operation
Effect assessment, evaluation result are denoted as D25, whether reached according to engineering operation effect expected to D25Value 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 D26, whether reached according to engineering operation effect expected to D26Value be configured；
Calculating, which influences power quality, examines number J, and engineering operation effect assessment is carried out according to influencing power quality examination number,
Evaluation result is denoted as D27, whether reached according to engineering operation effect expected to D27Value 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, wherein a21、a22、a23、a24、a25、a26、a27Respectively engineering transformer
Maximum load rate, circuit maximum load rate, overhead transmission line loss, off line electricity, peak load moment power factor, minimum load
The weight of moment power factor and influence power quality examination number in effect assessment, and a21+a22+a23+a24+a25+a26+a27
=1, according to D2Evaluate whether the engineering engineering operation effect reaches expection with the comparison result of preset value.
4. ferroelectric power supply grid engineering operation Benefit Evaluation Method according to claim 1, which is characterized in that according to acquisition
Electric power data detailed process that the project of the ferroelectric power supply engineering is evaluated safely be：
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 D31Value 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 D32, according to engineering safety reliability standard to D32Value 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 D33, according to engineering safety reliability standard to D33Value 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 D34, according to engineering safety reliability standard to D34Value 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 D35, according to engineering safety reliability standard to D35Value 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 D36, according to engineering safety reliability standard to D36Value 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 D37, according to engineering safety reliability standard pair
D37Value is determined；
Engineering safety evaluation, evaluation result D are carried out according to These parameters3It indicates：D3=a31D31+a32D32+a33D33+a34D34+
a35D35+a36D36+a37D37, wherein a31、a32、a33、a34、a35、a36、a37Respectively circuit availability, busbar voltage qualification rate,
Power grid safety accident frequency, relay protection and stability control equipment malfunction and tripping number, circuit unplanned outage hourage, line
Weight of 7 indexs of the road unplanned outage frequency and line tripping rate in safety evaluation, and a31+a32+a33+a34+a35+a36+
a37=1；According to D3It is whether qualified that the engineering safety reliability is evaluated with the comparison result of preset value.
5. ferroelectric power supply grid engineering operation Benefit Evaluation Method according to claim 1, which is characterized in that according to project
The evaluation result of efficiency, program result and project safety, it is comprehensive to the transregional operational effect for reinforcing passway for transmitting electricity electricity power engineering transprovincially
Evaluation is closed, detailed process is：
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 the engineering is poor as ferroelectric power supply engineering operational effect；
When setting minimum threshold≤D ＜ setting max-thresholds, it is believed that the ferroelectric powered operation of the engineering works well；
When D >=setting max-thresholds, it is believed that the ferroelectric powered operation effect of the engineering is fine.
6. ferroelectric power supply grid engineering operation Benefit Evaluation Method according to claim 5, which is characterized in that 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. ferroelectric power supply grid engineering operation Benefit Evaluation Method according to claim 5, which is characterized in that, it is calculating
Before 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 ferroelectric power supply grid engineering operation benefit evaluation system, it is characterised in that including the following contents：
Data acquisition module for the actual motion electric power data for acquiring needs assessment；
Project efficiency evaluation module for being evaluated the ferroelectric supply project efficiency according to the electric power data of acquisition,
In, project efficiency evaluation index includes newly-increased number of, lines system accounting, newly-increased line length system accounting and buckle electric current school
Test ratio；
Effectiveness evaluation of project for being evaluated the ferroelectric power supply grid engineering project effect according to the electric power data of acquisition
Module, wherein effectiveness evaluation of project index includes engineering transformer maximum load rate, circuit maximum load rate, overhead line path loss
Consumption, off line electricity, peak load moment power factor, minimum load moment power factor and influence power quality examine number；
Project safety evaluation mould for being evaluated safely the project of the ferroelectric power supply engineering according to the electric power data of acquisition
Block, wherein the evaluation index of project safety include circuit availability, busbar voltage qualification rate, power grid safety accident frequency,
Relay protection and stability control equipment malfunction and tripping number, to circuit unplanned outage hourage, the circuit unplanned outage frequency and
To line tripping rate；
For considering project efficiency, program result and project safety, to meeting the operational effect overall merit of power demand
Overall merit module.
9. ferroelectric power supply grid engineering operation benefit evaluation system according to claim 8, which is characterized in that the project
Efficiency evaluation module evaluates the ferroelectric supply project efficiency according to the electric power data of acquisition, and specific evaluation procedure is：
It calculates and increases number of, lines system accounting K newlyl1：Kl1=Cl/ΣCl, in formula, Σ ClIt is system before putting into operation with voltage class circuit
Quantity, ClNumber of, lines is increased newly for this engineering, according to Kl1Evaluation engineering importance, evaluation result are denoted as D11, according to the engineering
The effect for service ferroelectric operation is built whether significantly to D11Value be configured；
It calculates and increases the proportion K that line length accounts for system line total length newlyl2：Kl2=Ll/∑Ll, in formula, Σ LlFor system before putting into operation
With voltage class line length, LlLine length is increased newly for this engineering, according to Kl2Evaluation engineering importance, evaluation result are denoted as
D12, according to the construction of the engineering for whether servicing the effect of ferroelectric operation significantly to D12Value 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 RabCarry out engineering Assessment of Important, evaluation knot
Fruit is denoted as D13, according to the construction of the engineering for whether servicing the effect of ferroelectric operation significantly to D13Value be configured；
The engineering construction is evaluated for ensureing whether the power supply capacity of ferroelectric safe operation is notable according to efficiency result of calculation, is evaluated
As a result D is used1It indicates：
D1=a11D11+a12D12+a13D13
According to D1It is whether notable for reinforcing channel ability to transmit electricity effect to evaluate the engineering construction, in formula, a11、a12、a13Respectively
Newly-increased number of, lines system accounting, the newly-increased power of line length system accounting and grid structure optimizing index in efficiency evaluation
Weight, a11+a12+a13=1, according to D1Work of the construction for service ferroelectric operation of the engineering is evaluated with the comparison result of preset value
With whether significantly.
10. ferroelectric power supply grid engineering operation benefit evaluation system according to claim 8, which is characterized in that the item
Mesh effect assessment module is specifically commented according to the electric power data of acquisition what the ferroelectric power supply grid engineering project effect was evaluated
Valence process 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 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 D22, whether reached according to engineering operation effect expected to D22Value set
It sets；
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 D23, according to engineering operation effect whether
It reaches expected to D23Value be configured；
Calculate the off line electricity Q obtained from power grid after engineering puts into operationdown, according to off line electricity QdownEngineering operation effect is carried out
Evaluation, evaluation result are denoted as D24, whether reached according to engineering operation effect expected to D24Value be configured；
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, according to peak load moment power factorCarry out engineering operation
Effect assessment, evaluation result are denoted as D25, whether reached according to engineering operation effect expected to D25Value 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 D26, whether reached according to engineering operation effect expected to D26Value be configured；
Calculating, which influences power quality, examines number J, and engineering operation effect assessment is carried out according to influencing power quality examination number,
Evaluation result is denoted as D27, whether reached according to engineering operation effect expected to D27Value 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, wherein a21、a22、a23、a24、a25、a26、a27Respectively engineering transformer
Maximum load rate, circuit maximum load rate, overhead transmission line loss, off line electricity, peak load moment power factor, minimum load
The weight of moment power factor and influence power quality examination number in effect assessment, and a21+a22+a23+a24+a25+a26+a27
=1, according to D2Evaluate whether the engineering engineering operation effect reaches expection with the comparison result of preset value.
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