CN103955777B - Photovoltaic generation accesses power distribution network conceptual design and analysis and evaluation accessory system - Google Patents

Photovoltaic generation accesses power distribution network conceptual design and analysis and evaluation accessory system Download PDF

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CN103955777B
CN103955777B CN201410207003.2A CN201410207003A CN103955777B CN 103955777 B CN103955777 B CN 103955777B CN 201410207003 A CN201410207003 A CN 201410207003A CN 103955777 B CN103955777 B CN 103955777B
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distribution network
power distribution
photovoltaic
evaluation
data
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CN201410207003.2A
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CN103955777A (en
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罗凤章
魏炜
王成山
白洋
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天津大学
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of electrical power generation, transmission or distribution, i.e. smart grids as climate change mitigation technology in the energy generation sector
    • Y02E40/76Computing methods or systems for efficient or low carbon management or operation of electric power systems
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • Y04S10/54Management of operational aspects
    • Y04S10/545Computing methods or systems for efficient or low carbon management or operation of electric power systems

Abstract

Power distribution network conceptual design and analysis and evaluation accessory system are accessed the invention discloses a kind of photovoltaic generation, including basic data acquisition module, data processing module, photovoltaic accesses power distribution network conceptual design module, photovoltaic accesses power distribution network program analysis evaluation module, optimization planning module containing photovoltaic active power distribution network, the analysis and evaluation module containing photovoltaic active power distribution network, system is parameter-embedded and case library.The present invention disclosure satisfy that the characteristics of photovoltaic accesses the conceptual design and analysis and evaluation of power distribution network, and the analysis and evaluation demand containing photovoltaic active power distribution network, compatible country's distribution web information system and data, support Time-Series analysis demand.Can be simultaneously the reasonable offer convenient tool of effectively dissolving using with photovoltaic generation of photovoltaic resources, and for conventional electrical distribution net provides analysis branch stake tool to the development transition of following active-mode intelligent power distribution network.

Description

Photovoltaic generation accesses power distribution network conceptual design and analysis and evaluation accessory system

Technical field

The present invention relates to a kind of system in distribution network planning field, specifically a kind of photovoltaic generation accesses power distribution network scheme and sets Meter and analysis and evaluation accessory system.

Background technology

Photovoltaic generation to Optimization of Energy Structure, promotes energy-saving and emission-reduction, realization society as the Main Means of Solar use Sustainable economic development are significant.With the successive appearance of relevant policies and technical standard, domestic grid-connected photovoltaic capacity The trend for steeply rising is presented in recent years.Large-scale distributed photovoltaic accesses power distribution network, by the planning operation of conventional electrical distribution net Influence is produced Deng many-side, it is double that conventional electrical distribution net translates into the two-way flow characteristic with trend, the load of user and power supply Weight role, the probabilistic New Active power distribution network of the both-end of load and power supply, so as to cause the analysis and evaluation of conventional electrical distribution net Instrument is no longer applicable completely, such as external CYMDIST(The distribution system analysis system of CYME Distribution, CYME companies)、 ETAP(The electric power electric analysis of ETAP companies, electric energy management Comprehensive Analysis Software system)、DPlan(Distribution Planning, distribution network planning system)Function Deng offer belongs to traditional distribution system analysis function, does not account for distribution The characteristics of distributed energy is largely accessed in net.Existing new energy design tool such as U.S.'s regenerative resource laboratory(NREL , National Renewable Energy Laboratory)The microgrid economic analysis instrument HOMER of exploitation(Hybrid Optimization of Multiple Energy Resources, multiple-energy-source hybrid optimization system), German power system point Analysis software DIgSILENT(Digital Simulation and Electrical Network, Digital Simulation and power network are calculated System)And special photovoltaic system is analyzed and design tool PVsyst(PhotoVoltaic system, photovoltaic system design Software)、PV*SOL(PhotoVoltaic Solar, solar energy photovoltaic system design software)Deng biasing toward photovoltaic plant body The operation sunykatuib analysis of Computer Aided Design and photovoltaic generation, can not run through the overall process that photovoltaic accesses engineering assistance design work, The photovoltaic carrying capacity from the power network entirety angle whole power distribution network of measurement is not supported, and can not compatible country's distribution web information system And the characteristics of data.

The domestic new energy with photovoltaic as representative accesses demand main table of the power distribution network real work to aid at present Now:

1)The demand of power distribution network design aids is accessed to photovoltaic

It is current domestic when photovoltaic access power distribution network conceptual design is carried out, generally it is required for first screening extraction power distribution network correlation Related data in information system, is then converted into the form of the tool demands such as PVsyst, PV*SOL, in addition it is also necessary to be applied in combination many The instrument of kind is not easy to photovoltaic and accesses the extensive of power distribution network conceptual design work to realize the function that Computer Aided Design, scheme are evaluated Carry out.Power distribution network design aids is accessed it would therefore be desirable to have special photovoltaic, photovoltaic is extended not only through and is accessed engineering assistance design The overall process of work, and the characteristics of compatible country's distribution web information system and data, Utilities Electric Co. can be directly embedded into and showed In some distribution system analysis instruments.

2)To the demand of Time-Series analysis

Conventional electrical distribution net analysis tool is typically using the analysis method based on a certain typical time period section, such as distribution network planning Generally it is analyzed using the state at peak load moment.And photovoltaic generation have interval, it is random the characteristics of, it is exerted oneself certain In the range of continued jitters, thereby increases and it is possible to drastically change in a short time.If be still based on single using conventional electrical distribution net analysis tool The analytical form of discontinuity surface, will likely produce the analysis result of mistake, it is therefore necessary to carry out using Time Series Analysis Method More careful analysis and evaluation.

Described " Time-Series analysis ", is referred to various time scales(As it is single when discontinuity surface, 1 year, 1 day, 1 hour Deng)Calculate the system of analysis and exert oneself time series data possessing power network sequential service data, photovoltaic power generation apparatus, it is necessary to be set up On basis etc. detailed time series data.

With the lifting and the development of mass data storage technology of acquisition speed, the time series data of power distribution network is gathered It has been achieved with storage, the Time-Series analysis of Study on Power Grid Planning aspect can be realized completely, and conventional electrical distribution net point Analysis instrument does not utilize these data well.

3)To the demand of active power distribution network comprehensive assessment

After photo-voltaic power supply accesses power distribution network on a large scale, operation of power networks state will be because of a large amount of photo-voltaic power supplies with randomness And become increasingly complex.Because the influence that photo-voltaic power supply is caused to power distribution network is not the simple folded of each photo-voltaic power supply influence Plus, it is necessary to from the overall angle of power distribution network, many analyses are carried out to power distribution network on the basis of Time-Series analysis, so that effectively The adaptability that is accessed to photo-voltaic power supply of assessment power distribution network and the ability of receiving, and with this instruct photovoltaic access power distribution network planning, Examination & approval and design, guide the scientific order development of grid-connected photovoltaic.

In a word, the current country need badly it is a set of support Time-Series analysis photovoltaic access power distribution network conceptual design it is auxiliary with analysis and evaluation Auxiliary system, in addition to the conceptual design and analysis and evaluation that can realize accessing the single engineering of power distribution network to photovoltaic, additionally it is possible to containing light The entirety for lying prostrate active power distribution network is planned, design and analysis and assessment.

The content of the invention

The present invention provides a kind of photovoltaic generation access power distribution network scheme and sets exactly in order to solve the problems of the prior art Meter and analysis and evaluation accessory system.

The present invention is realized according to following technical scheme:

Photovoltaic generation of the invention accesses power distribution network conceptual design and analysis and evaluation accessory system, including:

Basic data acquisition module, data processing module, photovoltaic accesses power distribution network conceptual design module, and photovoltaic accesses distribution Net program analysis evaluation module, the optimization planning module containing photovoltaic active power distribution network, the analysis and evaluation containing photovoltaic active power distribution network Module, system is parameter-embedded and case library.Wherein:

Described basic data acquisition module, is responsible for acquisition photovoltaic generation access power distribution network conceptual design auxiliary with analysis and evaluation External data needed for auxiliary system, and information fusion is carried out to these scattered data according to conceptual design and analysis and evaluation demand Splicing, generates basic data and stores;

Described data processing module, is responsible for carrying out data check to the basic data that basic data acquisition module is collected Repair and the treatment of normal operating mode data convert, generation meets the ripe data of conceptual design and analysis and evaluation needs;

Described photovoltaic accesses power distribution network conceptual design module, reads in ripe data and the parameter-embedded allusion quotation with case library of system Grid-connected typical access scheme in type access scheme storehouse, completes conceptual scheme drafting and parameter that photovoltaic accesses power distribution network scheme Configuration, and then estimation device and construction investment, export photovoltaic access scheme;

Described photovoltaic accesses power distribution network program analysis evaluation module, reads in photovoltaic access power distribution network conceptual design module defeated The photovoltaic access scheme for going out, the access scheme assessment indicator system in the parameter-embedded appraisement system storehouse with case library of system, comments Access scheme evaluation rule, evaluation criteria and index weight value in valency rule base, the access scheme typical case evaluated in case library comment Valency case, completes the assessment of photovoltaic access scheme, and adaptability and the reasonability to photovoltaic access scheme make evaluation, export photovoltaic Access scheme assessment result;

The described optimization planning module containing photovoltaic active power distribution network, reads in the ripe data of data processing module output, is Network optimization model and the principle of optimality in the parameter-embedded Optimizing Model Base with case library of system, active in Planning Example storehouse are matched somebody with somebody Power network typical case's programme, completes the optimization planning containing photovoltaic active power distribution network, exports active power distribution network optimization planning scheme;

The described analysis and evaluation module containing photovoltaic active power distribution network, reads in the optimization planning mould containing photovoltaic active power distribution network The active power distribution network optimization planning scheme of block output, photovoltaic accesses the photovoltaic access side of power distribution network program analysis evaluation module output Case assessment result, the active power distribution network assessment indicator system in the parameter-embedded appraisement system storehouse with case library of system, evaluates rule Active power distribution network evaluation rule then in storehouse, evaluation criteria and index weight value, the active power distribution network typical case evaluated in case library comment Valency case, completes the comprehensive assessment containing photovoltaic active power distribution network, exports active power distribution network comprehensive assessment result;

Described system is parameter-embedded and case library, including appraisement system storehouse, evaluation rule storehouse, evaluates case library, typical case Access scheme storehouse, Optimizing Model Base, Planning Example storehouse, the data for being stored are directly read by each module when needed, wherein:

The appraisement system library storage access scheme assessment indicator system, active power distribution network assessment indicator system;

The evaluation rule library storage access scheme evaluation rule, evaluation criteria and index weight value, active power distribution network evaluation Rule, evaluation criteria and index weight value;

The evaluation case library storage access scheme typical case evaluates case, and active power distribution network typical case evaluates case;

The grid-connected typical access scheme of typical access scheme library storage;

The Optimized model library storage power distribution network Optimized model and the principle of optimality;

The Planning Example library storage active power distribution network typical case programme.

The present invention has the advantages and positive effects that:

The present invention disclosure satisfy that photovoltaic accesses the conceptual design and analysis and evaluation of power distribution network, and active power distribution network containing photovoltaic Analysis and evaluation demand, the characteristics of compatible country's distribution web information system and data, and support Time-Series analysis.Meanwhile, the present invention The new situations of current China's theCourse of PV Industry are adapted to, can be reasonable utilization and the distributed power source of superfluous photovoltaic capacity resources Effectively dissolve offer convenient tool, and support work for conventional electrical distribution net is provided to the development transition of following active-mode intelligent power distribution network Tool.

Brief description of the drawings

Fig. 1 is structured flowchart of the invention;

Fig. 2 is the workflow diagram that photovoltaic of the invention accesses power distribution network conceptual design module;

Fig. 3 is the access scheme figure of photovoltaic access scheme of the invention.

Specific embodiment

Below in conjunction with the accompanying drawings and embodiment the present invention will be described in detail.

As shown in figure 1, photovoltaic generation of the invention accesses power distribution network conceptual design and analysis and evaluation accessory system, including: Basic data acquisition module, data processing module, photovoltaic accesses power distribution network conceptual design module, and photovoltaic accesses power distribution network scheme point Analysis evaluation module, the optimization planning module containing photovoltaic active power distribution network, the analysis and evaluation module containing photovoltaic active power distribution network, system Parameter-embedded and case library.Wherein:

Described basic data acquisition module, is responsible for acquisition photovoltaic generation access power distribution network conceptual design auxiliary with analysis and evaluation External data needed for auxiliary system, and information fusion is carried out to these scattered data according to conceptual design and analysis and evaluation demand Splicing, generates basic data and stores;

Described data processing module, is responsible for carrying out data check to the basic data that basic data acquisition module is collected Repair and the treatment of normal operating mode data convert, generation meets the ripe data of conceptual design and analysis and evaluation needs;

Described photovoltaic accesses power distribution network conceptual design module, reads in ripe data and the parameter-embedded allusion quotation with case library of system Grid-connected typical access scheme in type access scheme storehouse, completes conceptual scheme drafting and parameter that photovoltaic accesses power distribution network scheme Configuration, and then estimation device and construction investment, export photovoltaic access scheme;

Described photovoltaic accesses power distribution network program analysis evaluation module, reads in photovoltaic access power distribution network conceptual design module defeated The photovoltaic access scheme for going out, the access scheme assessment indicator system in the parameter-embedded appraisement system storehouse with case library of system, comments Access scheme evaluation rule, evaluation criteria and index weight value in valency rule base, evaluate the typical case in case library and evaluate case, complete Into the assessment of photovoltaic access scheme, adaptability and reasonability to photovoltaic access scheme make evaluation, export photovoltaic access scheme Assessment result;

The described optimization planning module containing photovoltaic active power distribution network, reads in the ripe data of data processing module output, is Network optimization model and the principle of optimality in the parameter-embedded Optimizing Model Base with case library of system, active in Planning Example storehouse are matched somebody with somebody Power network typical case's programme, completes the optimization planning containing photovoltaic active power distribution network, exports active power distribution network optimization planning scheme;

The described analysis and evaluation module containing photovoltaic active power distribution network, reads in the optimization planning mould containing photovoltaic active power distribution network The active power distribution network optimization planning scheme of block output, photovoltaic accesses the photovoltaic access side of power distribution network program analysis evaluation module output Case assessment result, the active power distribution network assessment indicator system in the parameter-embedded appraisement system storehouse with case library of system, evaluates rule Active power distribution network evaluation rule then in storehouse, evaluation criteria and index weight value, the typical case evaluated in case library evaluate case, complete Comprehensive assessment containing photovoltaic active power distribution network, exports active power distribution network comprehensive assessment result;

Described system is parameter-embedded and case library, including appraisement system storehouse, evaluation rule storehouse, evaluates case library, typical case Access scheme storehouse, Optimizing Model Base, Planning Example storehouse, the data for being stored are directly read by each module when needed, wherein:

The appraisement system library storage access scheme assessment indicator system, active power distribution network assessment indicator system;

The evaluation rule library storage access scheme evaluation rule, evaluation criteria and index weight value, active power distribution network evaluation Rule, evaluation criteria and index weight value;

The evaluation case library storage access scheme typical case evaluates case, and active power distribution network typical case evaluates case;

The grid-connected typical access scheme of typical access scheme library storage;

The Optimized model library storage power distribution network Optimized model and the principle of optimality;

The Planning Example library storage active power distribution network typical case programme.

The basic data acquisition module, including two submodules of data-acquisition submodule and data fusant module, its In:

The data-acquisition submodule, is responsible for commenting required external number with analysis from external data source acquisition scheme design According to.Drainage pattern includes automatic acquisition, semi-automatic importing, manual typing.Required external data includes two parts, and a part is Data in conventional electrical distribution web information system;Another part is that do not have still in conventional electrical distribution web information system, is but that photovoltaic is accessed Distribution system design and new energy necessary to analysis and evaluation and environment weather data.Packet in conventional electrical distribution web information system Include:Come from device attribute information, equipment deficiency information, the equipment test information of power distribution network production system, come from scheduling certainly The Real-time Electrical Distribution Network Data of dynamicization system, historical data, fault message, power information, plant stand topology information, method of operation letter Breath, comes from geographical map, topological data, grid equipment spatial information, other geography information of Distribution power network GIS system, comes from The electric quantity data of marketing management system, user profile, user malfunction information, remote meter reading of electricity, manual metering, electricity price information, Electricity charge information, comes from user malfunction information, the special circumstances information of customer service system, comes from the big of load control system Customer charge information;New energy data include photovoltaic apparatus data;Environment weather data include photometric data and temperature data.

The data fusion submodule, by the data fusion of data level, by from outside different data sources with patrolling The sporadic data splicing for collecting correlation and temporal correlation is merged, basis of formation data, and with structural data and graphic file Two kinds of form storages.The structural data, can be the data expressed with bivariate table structure;The graphic file, uses Shapefile(A kind of geometry of description spatial data of ESRI companies and the non-topological entity vector data structure of attributive character Form)、DXF(Drawing Exchange Format, autodesk, inc.'s exploitation for AutoCAD and other softwares it Between carry out the CAD data file form of CAD data exchange)、DWG(The graphic file of Drawing, AutoCAD)Form.Such shape Into basic data can not still meet conceptual design and analysis and evaluation demand, also need further treatment, therefore be also called " raw number According to ".

The data processing module, including data check repairs submodule and normal operating mode data convert submodule two Individual submodule, wherein:

The data check repairs submodule, carries out database level verification and reparation, power network topology successively to basic data Structure verifies and repairs, electrically verifies and repair.The verification, is according to rule, correctness, reasonability and pass to data Connection validity is verified;The reparation, is, according to data reparation rule, to repair incomplete, missing, abnormal data. The database level verification and reparation, are carried out according to the conformance definition in data dictionary, including field takes in tables of data The verification of value and reparation, and data validation and reparation between tables of data;The topological structure of electric verification and reparation, It is intended to find and correct the mistake of topological relation, including electromagnetism ring and non-electromagnetism ring are verified and repaired, and isolated island is verified and repaiied It is multiple;It is described it is electric verification with repair, be for the purpose of meeting conceptual design and analysis and evaluation needs, based on topological structure of electric, The verification and reparation carried out with apparent error to the core parameters such as circuit, transformer, switch missing.

The normal operating mode data convert submodule, information, sets to being unsatisfactory for scheme in basic data because of the present circumstance The data that meter needs with analysis and evaluation carry out reduction treatment, obtain the rack and load data matched with historical time section. Restoring method includes rack reduction, method of operation reduction and the reduction of many bore loads.Rack reduction, is rack because of the present circumstance Structure, the rack information of discontinuity surface when restoring specified according to rule, including line alignment, the mode of connection etc.;The operation side Formula is reduced, because planning is generally required and carried out based on power distribution network normal operating mode, and the data actually retained always with normally There is gap in the method for operation, it is therefore desirable to power distribution network normal operating mode because of the present circumstance, be interrupted when restoring specified according to rule The normal operating mode of face power network, and historical time section typical operation modes;Many bore load reduction, due to negative There is mismatch in lotus, with rack information, it is necessary to from different channels on the basis that historical load data verification is repaired Historical load and electric quantity data carry out reduction treatment, according to rule, when restoring specified under discontinuity surface with grid structure and match somebody with somebody The information on load that power system operating mode matches.Repaired by verification and the basic data of normal operating mode reduction treatment turns into Ripe data, can be directly used for conceptual design and analysis and evaluation.

The photovoltaic accesses power distribution network conceptual design module, including access scheme rendering submodule, parameter configuration submodule, Three submodules of investment estimate submodule, wherein:

The access scheme rendering submodule, on the basis of ripe data, chooses suitable from typical access scheme storehouse Grid-connected typical access scheme draws out the conceptual scheme of photovoltaic access scheme as reference;

The parameter configuration submodule, takes the method for carrying out analogy with the parameter of grid-connected typical access scheme, complete Into the configuration of all kinds of parameters of photovoltaic access scheme;

Described investment estimate submodule, equipment and construction investment to photovoltaic access scheme are estimated.

The specific implementation step that photovoltaic accesses power distribution network conceptual design module is as follows:First according to the light of power distribution network to be accessed Scale, the suitable typical case's access scheme template of the situation of access point selection of TRT are lied prostrate, then in conjunction with concrete application environment Draw out access scheme figure;Then parameter configuration is carried out;Afterwards by carrying out the basic calculations such as trend, short circuit, harmonic wave, to design Photovoltaic access scheme carry out security reliability verification;If requirement can not be met, all kinds of parameters to access scheme are carried out first Modification, cannot still meet when requiring scheme is modified again, until meeting correlation technique regulation and the safe and reliable fortune of power distribution network Row require and by verification untill;Finally the equipment and construction investment to access scheme estimates, exports photovoltaic access scheme.

The photovoltaic accesses power distribution network program analysis evaluation module, after reading in its input data, to accessing matching somebody with somebody after photovoltaic Sort run sunykatuib analysis when power network is carried out, analysis result is contrasted with the power distribution network situation accessed before photovoltaic, is connect from photovoltaic Enter the angle on distribution power flow, the quality of power supply, power distribution network scheduling and operation control influence, the photovoltaic designed by analysis and evaluation connects Enter the adaptability and reasonability of scheme, export photovoltaic access scheme assessment result.

The optimization planning module containing photovoltaic active power distribution network, problem and future mainly for present situation power distribution network Growth requirement, completes distribution system planning and improvement scheme.After reading in its input data, total load prediction, space are carried out successively Load prediction, substation locating and sizing, Optimal network frame planning, export active power distribution network optimization planning scheme.

The analysis and evaluation module containing photovoltaic active power distribution network, including Reliability Evaluation submodule, the quality of power supply Assessment submodule, assessment of economic benefit submodule, effects of energy saving and emission reduction assessment submodule, photo-voltaic power supply receive capability evaluation submodule Block, six submodules of active power distribution network comprehensive assessment submodule, wherein:

Described Reliability Evaluation submodule, mainly accesses the angle on power supply reliability influence from photovoltaic, to present Line, feeder line group are unit, power supply reliability of the analysis containing photovoltaic active power distribution network;

Described electricity quality evaluation submodule, mainly exerts oneself influence, photovoltaic DC-to-AC converter of the fluctuation to voltage from photovoltaic The quality of power supply of the angle estimator of the harmonic wave of generation containing photovoltaic active power distribution network;

Analyzed in terms of described assessment of economic benefit submodule, investment, operating cost mainly from photovoltaic access scheme etc. Economic benefit of the assessment containing photovoltaic active power distribution network;

Described effects of energy saving and emission reduction assessment submodule, mainly assesses in terms of reducing environmental pollution, reducing carbon emission etc. Effects of energy saving and emission reduction containing photovoltaic active power distribution network;

Described photo-voltaic power supply receives capability evaluation submodule, and the maximum safety for receiving photovoltaic for power distribution network receives ability Problem, the influence to aspects such as distribution network voltage, electric current, harmonic wave, reliabilities is accessed by comprehensive analysis photovoltaic, draws power distribution network Admissible photovoltaic maximum capacity;

Described active power distribution network comprehensive assessment submodule, according to Reliability Evaluation, electricity quality evaluation, economic effect Benefit assessment, effects of energy saving and emission reduction assessment, the assessment result of photo-voltaic power supply receiving capability evaluation, with reference to active power distribution network evaluation criteria Comprehensive assessment is carried out, active power distribution network comprehensive assessment result is exported.

During present invention work, basic data acquisition module is responsible for being interacted with outside each data source, wherein data acquisition Submodule obtains the data needed for conceptual design and analysis and evaluation from external data source, and data fusion submodule comes from these The sporadic data splicing in the data of different data sources with logical interdependency and temporal correlation is merged, basis of formation data, And stored in two kinds of forms of structural data and graphic file.

Data processing module, reads in basic data, is responsible for carrying out the basic data that collects data check reparation and just Normal running mode data reduction treatment.Wherein data check repair submodule basic data is carried out successively database level verification with Repair, topological structure of electric is verified and repaired, electrically verification and reparation;Normal operating mode data convert submodule, foundation side The assessment of case design and analysis requires that information reverting goes out the rack and load data matched with historical time section because of the present circumstance, Including rack reduction, method of operation reduction and the reduction of many bore loads.Repaired by verification and normal operating mode reduction treatment Basic data turn into ripe data, can be directly used for conceptual design and analysis and evaluation.

Photovoltaic accesses power distribution network conceptual design module, reads in ripe data, and is read in from typical access scheme storehouse grid-connected Typical access scheme, carry out successively typical access scheme library template selection, the drafting of access scheme figure, parameter configuration, analysis verification, Scheme modifying, is finally completed conceptual design and parameter configuration that photovoltaic accesses power distribution network, carries out equipment and is estimated with construction investment.It is defeated Go out photovoltaic access scheme.

Photovoltaic accesses power distribution network program analysis evaluation module, reads in the light that photovoltaic accesses the output of power distribution network conceptual design module Volt access scheme, the access scheme assessment indicator system in appraisement system storehouse, access scheme evaluation rule in evaluation rule storehouse, Evaluation criteria and index weight value, the access scheme typical case evaluated in case library evaluate case, enter to accessing the power distribution network after photovoltaic Sort run sunykatuib analysis during row, analysis result is contrasted with the power distribution network situation accessed before photovoltaic, is accessed to matching somebody with somebody from photovoltaic The angle of electric network swim, the quality of power supply, power distribution network scheduling and operation control influence, the photovoltaic access scheme designed by analysis and evaluation Adaptability and reasonability, export photovoltaic access scheme assessment result.

Optimization planning module containing photovoltaic active power distribution network, reads in the ripe data of data processing module output, Optimized model Network optimization model and the principle of optimality in storehouse, the active power distribution network typical case's programme in Planning Example storehouse, are carried out total successively Amount load prediction, Spatial Load Forecasting, substation locating and sizing, Optimal network frame planning, output active power distribution network optimization planning side Case.

Analysis and evaluation module containing photovoltaic active power distribution network, reads in the optimization planning module containing photovoltaic active power distribution network and exports Active power distribution network optimization planning scheme, photovoltaic accesses the photovoltaic access scheme assessment of power distribution network program analysis evaluation module output As a result, the active power distribution network assessment indicator system in appraisement system storehouse, active power distribution network evaluation rule in evaluation rule storehouse, comments Valency criterion and index weight value, the active power distribution network typical case evaluated in case library evaluate case, carry out containing photovoltaic active power distribution network Comprehensive assessment, specifically from Reliability Evaluation, electricity quality evaluation, assessment of economic benefit, effects of energy saving and emission reduction assessment, photovoltaic Power supply receives five aspects of capability evaluation to be estimated respectively, finally by active power distribution network comprehensive assessment submodule by five aspects Assessment result synthesis, export active power distribution network comprehensive assessment result.

The present embodiment is used for the conceptual design and analysis and evaluation that a photovoltaic generation project accesses distribution network engineering, Yi Jiguang Volt accesses the analysis and evaluation of rear region power distribution network.The engineering is that solar energy is installed using one to No. four workshop roofs in factory by certain company Photovoltaic power generation apparatus, total capacity about 2.1MW, institute's electricity is personal, and superior power network does not fall to send.The present embodiment is with the present invention Implemented premised on technical scheme, given detailed implementation method and process, but protection scope of the present invention is not limited to down The embodiment stated.

As shown in Fig. 2 the specific workflow of access scheme rendering submodule of the invention is:Ripe data are read in first, And the grid-connected typical access scheme in typical access scheme storehouse, access scheme rendering submodule divided input data Analysis, suitable typical case's access scheme template is have selected through analogy, determines that the photovoltaic power generation apparatus of the present embodiment answer accessing user 380V power distribution cabinets, photovoltaic generation is directly powered to load, on-site elimination, and accesses public power by customer substation 10kV circuits Net.Then access scheme figure is drawn out:Four solar energy systems in workshop collect be connected to respective photovoltaic generation first through inverter The 380V buses of system, then the low-pressure side bus of certain 10kV subscriber station are respectively connected to by 380V circuits;For preferably with regard to Horizon Weighing apparatus photovoltaic power generation capacity and power load, it is considered to the photovoltaic generating system accessing user station #1 main transformers in workshop one and workshop three, car Between two and workshop four photovoltaic generating system accessing user station #2 main transformers, as shown in Figure 3;Subsequent parameter configuration submodule completes to connect Enter the configuration of all kinds of parameters of scheme;Then by basic calculations such as trend, short circuit, harmonic waves, the safety of the designed scheme of verification can By property, and constantly modification parameter configuration or redesign scheme, until meeting correlation technique regulation and power distribution system secure reliability Untill service requirement;Investment estimate submodule to the apparatus body required for the present embodiment and protection, power distribution automation, communicate The investment of secondary device is estimated.Finally export photovoltaic access scheme.

The result that photovoltaic access scheme to being designed in the present embodiment is analyzed obtained by assessment is as follows.Analysis and evaluation master Angularly to carry out from active balance, reactive balance, voltage pulsation, harmonics level, demonstrate designed photovoltaic access scheme Adaptability and reasonability, while also found some profound detailed problems:

1. the photovoltaic power generation apparatus institute electricity in the present embodiment is personal, and the superior power network energy of falling power transmission, does not reach Spontaneous self-balancing;But when sort run analog simulation show, however not excluded that partial period, in the case of power load is smaller, there is electric power Fall to send to power network, so as to cause reverse-power protection to act, it is therefore proposed that being tracked control to the active power output of photovoltaic generating system System, reduces the active frequency for sending reverse-power protection to act as far as possible;

2. the photovoltaic power generation apparatus active power change maximum in the present embodiment is about 0.16MW, meets《National grid Company's photovoltaic plant accesses electric power network technique regulation》The upper limit requirement of middle 0.2MW;

3. send trend to reduce under 2 main transformers under normal circumstances, advantageously reduce power distribution network reactive loss;But simultaneously because Solar power generation power factor is higher, is typically pure active, therefore the available nothing of photovoltaic power generation apparatus in the present embodiment Work(power limited, it is desirable to which power distribution network provides reactive power support for it;

4. be computed, when the photovoltaic power generation apparatus in the present embodiment cut off suddenly, cause Tu3Zhong transformer stations 10kV buses, The voltage pulsation of certain subscriber station 10kV buses and 380V buses is respectively less than 1%, and wherein 380V busbar voltages change is about 0.5%, Within foregoing code allowed band;

5. the photovoltaic power generation apparatus in the present embodiment inject the total harmonic wave of the harmonic wave total amount in nominal voltage 10kV of power distribution network Within the 4.0% of aberration rate limit value, but still need to install equipment for monitoring power quality additional in the tie point with public electric wire net, monitoring it is It is no to meet correlation technique directive/guide and technical stipulation, such as it is unsatisfactory for, need to take and install the corresponding measures such as filter additional, it is to avoid to public The quality of power supply of power network is polluted.

This example demonstrates that, the photovoltaic generation accesses power distribution network conceptual design and can be designed with analysis and evaluation accessory system Go out to meet the photovoltaic access scheme that correlation technique specifies;Assessment can also be analyzed by active power distribution network containing photovoltaic, be with Power network receives distributed power source to provide deeper suggestion.

Claims (5)

1. a kind of photovoltaic generation accesses power distribution network conceptual design and analysis and evaluation accessory system, it is characterised in that:Including:Basic number According to acquisition module, data processing module, photovoltaic accesses power distribution network conceptual design module, and photovoltaic accesses power distribution network program analysis assessment Module, the optimization planning module containing photovoltaic active power distribution network, the analysis and evaluation module containing photovoltaic active power distribution network, the built-in ginseng of system Number and case library;Wherein:
Described basic data acquisition module, is responsible for obtaining photovoltaic generation access power distribution network conceptual design with analysis and evaluation auxiliary system External data needed for system, and information fusion spelling is carried out to these scattered data according to conceptual design and analysis and evaluation demand Connect, generate basic data and store;
Described data processing module, is responsible for carrying out data check reparation to the basic data that basic data acquisition module is collected And the treatment of normal operating mode data convert, generate the ripe data for meeting conceptual design and analysis and evaluation needs;
The data processing module, including data check repairs two sons of submodule and normal operating mode data convert submodule Module, wherein:
The data check repairs submodule, and database level is carried out successively to the basic data that basic data acquisition module is collected Verification verifies with reparation, topological structure of electric and repairs, electrically verifies and repair;
The normal operating mode data convert submodule, information because of the present circumstance, to be unsatisfactory in basic data conceptual design with The data that analysis and evaluation needs carry out reduction treatment, obtain the rack and load data matched with historical time section, reduce Method includes rack reduction, method of operation reduction and the reduction of many bore loads, is repaired by verification and normal operating mode is reduced The basic data for the treatment of turns into ripe data;
Described photovoltaic accesses power distribution network conceptual design module, reads in ripe data and the parameter-embedded typical case with case library of system connects Enter the grid-connected typical access scheme in scheme base, the conceptual scheme drafting for completing photovoltaic access power distribution network scheme is matched somebody with somebody with parameter Put, and then estimation device and construction investment, export photovoltaic access scheme;
Described photovoltaic accesses power distribution network program analysis evaluation module, reads in photovoltaic and accesses the output of power distribution network conceptual design module Photovoltaic access scheme, the access scheme assessment indicator system in the parameter-embedded appraisement system storehouse with case library of system, evaluates rule Access scheme evaluation rule then in storehouse, evaluation criteria and index weight value, evaluate the access scheme typical case's evaluation case in case library Example, completes the assessment of photovoltaic access scheme, and adaptability and the reasonability to photovoltaic access scheme make evaluation, and output photovoltaic is accessed Scheme evaluation result;
The described optimization planning module containing photovoltaic active power distribution network, reads in the ripe data of data processing module output, in system Put the network optimization model and the principle of optimality in the Optimizing Model Base of parameter and case library, the active power distribution network in Planning Example storehouse Typical programme, completes the optimization planning containing photovoltaic active power distribution network, exports active power distribution network optimization planning scheme;
The described analysis and evaluation module containing photovoltaic active power distribution network, reads in the optimization planning module containing photovoltaic active power distribution network defeated The active power distribution network optimization planning scheme for going out, the photovoltaic access scheme that photovoltaic accesses the output of power distribution network program analysis evaluation module is commented Estimate result, the active power distribution network assessment indicator system in the parameter-embedded appraisement system storehouse with case library of system, evaluation rule storehouse In active power distribution network evaluation rule, evaluation criteria and index weight value, evaluate the active power distribution network typical case's evaluation case in case library Example, completes the comprehensive assessment containing photovoltaic active power distribution network, exports active power distribution network comprehensive assessment result;
Described system is parameter-embedded and case library, including appraisement system storehouse, evaluation rule storehouse, evaluates case library, typical case and access Scheme base, Optimizing Model Base, Planning Example storehouse, the data for being stored are directly read by each module when needed, wherein:
The appraisement system library storage access scheme assessment indicator system, active power distribution network assessment indicator system;
The evaluation rule library storage access scheme evaluation rule, evaluation criteria and index weight value, active power distribution network evaluation rule, Evaluation criteria and index weight value;
The evaluation case library storage access scheme typical case evaluates case, and active power distribution network typical case evaluates case;
The grid-connected typical access scheme of typical access scheme library storage;
The Optimized model library storage power distribution network Optimized model and the principle of optimality;
The Planning Example library storage active power distribution network typical case programme;
The optimization planning module containing photovoltaic active power distribution network, after reading in its input data, be sequentially completed total load prediction, Spatial Load Forecasting, substation locating and sizing, Optimal network frame planning, export active power distribution network optimization planning scheme.
2. photovoltaic generation according to claim 1 accesses power distribution network conceptual design and analysis and evaluation accessory system, its feature It is:The basic data acquisition module, including two submodules of data-acquisition submodule and data fusant module, wherein:
The data-acquisition submodule, is responsible for acquisition scheme design with the external data needed for analysis and evaluation, and drainage pattern includes: Automatic acquisition, semi-automatic importing, manual typing, required external data include:Come from the equipment category of power distribution network production system Property information, equipment deficiency information, equipment test information, come from Real-time Electrical Distribution Network Data, the history number of dispatch automated system According to, fault message, power information, plant stand topology information, method of operation information, come from the geographical map of Distribution power network GIS system, open up Data, grid equipment spatial information are flutterred, comes from electric quantity data, user profile, user malfunction information, the electricity of marketing management system Amount remote meter reading, manual metering, electricity price information, electricity charge information, come from the user malfunction information of customer service system, come from Large user's information on load of load control system, includes the new energy data of photovoltaic apparatus data, include photometric data and The environment weather data of temperature data;
The data fusion submodule, by the data fusion of data level, by from outside different data sources with logic phase The sporadic data splicing fusion of closing property and temporal correlation, basis of formation data, and with two kinds of structural data and graphic file Form is stored.
3. photovoltaic generation according to claim 1 accesses power distribution network conceptual design and analysis and evaluation accessory system, its feature It is:The photovoltaic accesses power distribution network conceptual design module, including access scheme rendering submodule, parameter configuration submodule, throwing Money estimation three submodules of submodule, wherein:
Described access scheme rendering submodule, on the basis of ripe data, chooses grid-connected from typical access scheme storehouse Typical access scheme draws out the conceptual scheme of photovoltaic access scheme as reference;
The parameter configuration submodule, takes the method for carrying out analogy with the parameter of grid-connected typical access scheme, completes light Lie prostrate the configuration of all kinds of parameters of access scheme;
The investment estimate submodule, equipment and construction investment to photovoltaic access scheme are estimated.
4. photovoltaic generation according to claim 1 accesses power distribution network conceptual design and analysis and evaluation accessory system, its feature It is:The photovoltaic accesses power distribution network program analysis evaluation module, after reading in its input data, to accessing the power distribution network after photovoltaic Sort run sunykatuib analysis when carrying out, analysis result is contrasted with the power distribution network situation accessed before photovoltaic, and it is right to be accessed from photovoltaic The angle of distribution power flow, the quality of power supply, power distribution network scheduling and operation control influence, the photovoltaic access side designed by analysis and evaluation The adaptability and reasonability of case, export photovoltaic access scheme assessment result.
5. photovoltaic generation according to claim 1 accesses power distribution network conceptual design and analysis and evaluation accessory system, its feature It is:The analysis and evaluation module containing photovoltaic active power distribution network, including Reliability Evaluation submodule, electricity quality evaluation Submodule, assessment of economic benefit submodule, effects of energy saving and emission reduction assessment submodule, photo-voltaic power supply receive capability evaluation submodule, Six submodules of active power distribution network comprehensive assessment submodule, wherein:
Described Reliability Evaluation submodule, accesses the angle on power supply reliability influence, with feeder line, feeder line group from photovoltaic It is unit, power supply reliability of the analysis containing photovoltaic active power distribution network;
Described electricity quality evaluation submodule, from photovoltaic exert oneself that influence of the fluctuation to voltage, photovoltaic DC-to-AC converter produce it is humorous The quality of power supply of the angle estimator of ripple containing photovoltaic active power distribution network;
Described assessment of economic benefit submodule, analysis and evaluation is matched somebody with somebody containing photovoltaic is active in terms of construction investment expense and operating cost The economic benefit of power network;
Described effects of energy saving and emission reduction assessment submodule, assessment is active containing photovoltaic in terms of reducing environmental pollution, reducing carbon emission The effects of energy saving and emission reduction of power distribution network;
Described photo-voltaic power supply receives capability evaluation submodule, and the maximum safe receiving ability for receiving photovoltaic for power distribution network is asked Topic, the influence in terms of being accessed to distribution network voltage, electric current, harmonic wave, reliability by comprehensive analysis photovoltaic, show that power distribution network can connect The photovoltaic maximum capacity received;
Described active power distribution network comprehensive assessment submodule, comments according to Reliability Evaluation, electricity quality evaluation, economic benefit Estimate, effects of energy saving and emission reduction is assessed, the assessment result of photo-voltaic power supply receiving capability evaluation, carried out with reference to active power distribution network evaluation criteria Comprehensive assessment, exports active power distribution network comprehensive assessment result.
CN201410207003.2A 2014-05-16 2014-05-16 Photovoltaic generation accesses power distribution network conceptual design and analysis and evaluation accessory system CN103955777B (en)

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