CN103559654A - Comprehensive analysis system and method of power distribution network - Google Patents
Comprehensive analysis system and method of power distribution network Download PDFInfo
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Abstract
The invention discloses a comprehensive analysis system and method of a power distribution network. The comprehensive analysis system comprises a data acquisition module, a comprehensive analysis module, a modification module and a verification module, wherein the data acquisition module acquires the data of the power distribution network, the comprehensive analysis module carries out comprehensive analysis on the power distribution network based on the data of the power distribution network and obtains a comprehensive analysis result of the power distribution network, the modification module makes a modification scheme for the power distribution network when the comprehensive analysis result of the power distribution network does not accord with a preset standard, and the verification module verifies the performance of the power distribution network modified according to the modification scheme. The comprehensive analysis module carries out comprehensive analysis on the power distribution network, the modification module makes the corresponding modification scheme when the analysis result does not accord with the preset standard to modify the power distribution network, and therefore the comprehensive analysis system and method of the power distribution network achieve comprehensive analysis of the power distribution network, bring convenience to technical personnel in the field for comprehensive analysis of the power distribution network, provide reference for construction, operation and management of the power distribution network, and improve the reliability of the power distribution network.
Description
Technical field
The invention belongs to distribution network system analysis and assessment technology field, relate in particular to a kind of power distribution network synthesis analytic system and method.
Background technology
Current, building sturdy power grid becomes one of important goal of power network development, and electrical network comprises power generating network, power transmission network and power distribution network.
Power distribution network is directly connected with vast power customer, is the important component part of electrical network, the quality of power distribution network synthesis performance directly has influence on it while powering to power customer power supply reliability and power supply quality.Based on above-mentioned situation, for improving reliability and the power supply quality of power distribution network power supply, need to promote the combination property of power distribution network, thereby the planning of power distribution network, construction and operation have been had to more and more higher requirement, distribution network planning and reconstruction problem are brought into schedule, and electrical network analysis, assessment, as the important component part of Electric Power Network Planning, can be Electric Power Network Planning decision-making foundation is provided, therefore, the analysis of electrical network, assessment become the heat subject in this field.
But so far, mainly rely on previous experiences that power distribution network is analyzed, assessed and manages, still do not have systematic power distribution network synthesis analysis tool or method, therefore, provide a kind of power distribution network synthesis analytic system or method to become the problem that this area is needed solution badly.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of power distribution network synthesis analytic system and method, to realize, power distribution network is comprehensively analyzed, assessed, for those skilled in the art comprehensively analyze, assess power distribution network, facilitate, construction, the operation and management for power distribution network provides reference simultaneously.
For this reason, the open following technical scheme of the present invention:
An analytic system, comprises data acquisition module, comprehensive analysis module, improves module and authentication module, wherein:
Described data acquisition module, for obtaining the power distribution network data within the scope of presupposition analysis;
Described comprehensive analysis module, for based on described power distribution network data, comprehensively analyzes power distribution network, obtains power distribution network synthesis analysis result;
Described improvement module, for when described power distribution network synthesis analysis result does not meet preset standard, formulates for power distribution network is carried out to improved power distribution network improvement project;
Described authentication module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, verifies the performance of utilizing the power distribution network after described improvement project is improved.
Preferably, described comprehensive analysis module comprises equipment technology and management level analysis module, distribution tidal current analysis module, fail-safe analysis module, load transfer ability analysis module and economic analysis module, wherein:
Described equipment technology and management level analysis module, for based on described power distribution network data, analyze the equipment technology of power distribution network and management level, obtains power distribution network equipment technology level and management level analysis result;
Described tidal current analysis module, for based on described power distribution network data, carries out distribution power flow analysis, obtains distribution tidal current analysis result;
Described fail-safe analysis module, for based on described power distribution network data, analyzes the reliability of power distribution network, obtains distribution network reliability analysis result;
Described load transfer ability analysis module, for based on described power distribution network data, analyzes the load transfer ability of power distribution network, obtains power distribution network load transfer ability analysis result;
Described economic analysis module, for based on described power distribution network data, analyzes the economy of power distribution network, obtains power distribution network economic analysis result.
Preferably, described authentication module comprises static security degree authentication module, feeder line radius of electricity supply authentication module, circuit maximum possible overload rate authentication module, load loss rate authentication module, user's loss percentage authentication module, connectivity number authentication module and capacity of short circuit correction verification module, wherein:
Described static security degree authentication module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, the static security degree of the power distribution network after computed improved, and the safe reliability of power distribution network after improving according to described static security degree checking;
Described feeder line radius of electricity supply authentication module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, the radius of electricity supply of every of power distribution network feeder line after computed improved, and the safe reliability of power distribution network after improving according to described radius of electricity supply checking;
Described circuit maximum possible overload rate module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, record the maximum current that every feeder line of power distribution network may reach, and the safe reliability of power distribution network after improving according to described maximum current checking;
Described load loss rate authentication module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, calculates the load loss rate of power distribution network, and according to described load loss rate checking, improves the economy of rear power distribution network;
Described user's loss percentage authentication module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, calculates user's loss percentage of power distribution network, and according to the safe reliability of described user's loss percentage checking power distribution network;
Described connectivity number authentication module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, obtains the connectivity number in each region of power distribution network, and according to described connectivity number checking, improves the safe reliability of rear power distribution network;
Described capacity of short circuit correction verification module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, obtains the capacity of short circuit of each switch of power distribution network, and according to the safe reliability of described capacity of short circuit checking power distribution network.
An analytical approach, comprising:
Obtain the power distribution network data within the scope of presupposition analysis;
Based on described power distribution network data, power distribution network is comprehensively analyzed, obtain power distribution network synthesis analysis result;
When described power distribution network synthesis analysis result does not meet preset standard, formulate for power distribution network is carried out to improved power distribution network improvement project;
Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, verify the performance of utilizing the power distribution network after described improvement project is improved.
Preferably, describedly based on described power distribution network data, power distribution network is comprehensively analyzed, is obtained power distribution network synthesis analysis result and specifically comprise:
Based on described power distribution network data, the equipment technology of power distribution network and management level are analyzed, obtain power distribution network equipment technology level and management level analysis result;
Based on described power distribution network data, carry out distribution power flow analysis, obtain distribution tidal current analysis result;
Based on described power distribution network data, the reliability of power distribution network is analyzed, obtain distribution network reliability analysis result;
Based on described power distribution network data, the load transfer ability of power distribution network is analyzed, obtain power distribution network load transfer ability analysis result;
Based on described power distribution network data, the economy of power distribution network is analyzed, obtain power distribution network economic analysis result.
Preferably, described based on utilizing the performance of the power distribution network after described improvement project is improved specifically to comprise to utilizing the power distribution network after described improvement project is improved to carry out emulation, verifying:
Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, the static security degree of the power distribution network after computed improved, and the safe reliability of power distribution network after improving according to described static security degree checking;
Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, the radius of electricity supply of every of power distribution network feeder line after computed improved, and the safe reliability of power distribution network after improving according to described radius of electricity supply checking;
Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, record the maximum current that every feeder line of power distribution network may reach, and the safe reliability of power distribution network after improving according to described maximum current checking;
Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, calculate the load loss rate of power distribution network, and according to described load loss rate checking, improve the economy of rear power distribution network;
Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, calculate user's loss percentage of power distribution network, and according to the safe reliability of described user's loss percentage checking power distribution network;
Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, obtain the connectivity number in each region of power distribution network, and according to described connectivity number checking, improve the safe reliability of rear power distribution network;
Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, obtain the capacity of short circuit of each switch of power distribution network, and according to the safe reliability of described capacity of short circuit checking power distribution network.
The power distribution network synthesis analytic system that the embodiment of the present invention provides has comprised data acquisition module, comprehensive analysis module, has improved module and authentication module.The power distribution network data that comprehensive analysis module obtains based on data acquisition module are comprehensively analyzed power distribution network, when improving analysis result that module comprehensively analyzes gained at comprehensive analysis module to power distribution network and not meeting goal-selling, for example, during power distribution network poor-performing, formulation is carried out improved power distribution network improvement project to power distribution network, the validity of authentication module simulating, verifying improvement project.Because the comprehensive analysis module that the present invention comprises by it is comprehensively analyzed power distribution network, and by improvement module, when analysis result does not meet preset standard, formulate corresponding improvement project power distribution network is improved, be that the present invention comprehensively analyzes power distribution network, and using preset standard and as benchmark, analysis result is passed judgment on, when not meeting preset standard, formulates analysis result corresponding improvement project, thereby the present invention has realized power distribution network has been carried out to comprehensive assessment and analysis, for comprehensively analyzing power distribution network, those skilled in the art provide convenience, it is the construction of power distribution network simultaneously, operation and management provides reference, reliability and the power supply quality of power distribution network power supply have been improved.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the power distribution network synthesis analytic system structural representation that the embodiment of the present invention one provides;
Fig. 2 is the power distribution network synthesis analytical approach process flow diagram that the embodiment of the present invention two provides.
Embodiment
For quote and know for the purpose of, the technical term hereinafter using, write a Chinese character in simplified form or abridge to sum up and be explained as follows:
Region: a minimum territory section that fault can be isolated in assignment electrical network, region consists essentially of 2 kinds in current most of distribution net work structures: branch and segmentation.
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The invention discloses a kind of power distribution network synthesis analytic system and method, below will to system and method for the present invention, be elaborated by each embodiment.
Embodiment mono-
The embodiment of the present invention one discloses a kind of power distribution network synthesis analytic system, refers to Fig. 1, and this system comprises data acquisition module 100, comprehensive analysis module 200, improves module 300 and authentication module 400, wherein:
Obtain power distribution network is carried out comprehensive analyze required power distribution network data before, first need to determine concrete distribution system analysis scope, in the present embodiment, power distribution network within the scope of Yi Duimou city administrative region of a city is analyzed as example, wherein analyst coverage specifically contains this city power supply administration, all 10kV circuits of power supply station, and the power distribution network information such as some typical platforms district in 400V electrical network.Afterwards, data acquisition module 100 obtains the power distribution network data in above-mentioned analyst coverage.
The present embodiment mainly obtains the power distribution network data in above-mentioned analyst coverage by statistics and the on-the-spot mode of receiving money.
Particularly, the statistical table that all 10kV outlet utilizations of Dui Gai city power supply station jurisdiction design is in advance added up, statistical information comprises: (1) 10kV line information: each acquisition time 10kV feeder line active power, reactive power, electric weight, the topological relation of main line and branch line, line length, model, shaft tower height, the time of putting into operation, cost, year lightning fault number of times, passage lineament, the position of vacuum switch and isolating switch and model.(2) distribution transforming information: specially become meritorious reactive power and electric quantity data with the public model becoming, capacity, cost, the time of putting into operation, each acquisition time.(3) power distribution station information: typical power distribution station wiring diagram, circuit model, length, load.(4) small power station's data: power plant unit capacity, each month goes out force data.
Wherein, for obtaining of line load (being the load in the information of power distribution station) data, adopt following methods:
1) for the circuit that has negative control device, collect active-power P, the reactive power Q of the different time points of corresponding intrument record, data are carried out obtaining calculating minimax load data used after certain statistical treatment;
2) for the circuit of not negative control device, can utilize the electric quantity data of table meter, then by the ratiometric conversion of feeder line power data, obtain.
The on-the-spot physical resource of receiving money comprises the information of the information He Ge power supply station aspect of this office of city office aspect.Wherein office of ，Gai city office section information comprises the information such as inner city Electric Power Network Planning, power distribution network " 12 " development plan, power distribution network annual running mode; The information of each power supply station's aspect comprises the information such as topological diagram under data, the 10kV of 35kV transformer station feeder line Monitoring Data, distribution transformer monitoring data, power distribution station wiring diagram, the various methods of operation such as each jurisdiction 110KV 10kV of transformer station circuit geographical wiring diagram and circuit model shaft tower.
Wherein, comprehensive analysis module 200 comprises equipment technology and management level analysis module, distribution tidal current analysis module, fail-safe analysis module, load transfer ability analysis module and economic analysis module.
Equipment technology and management level analysis module, for based on described power distribution network data, analyze the equipment technology of power distribution network and management level, obtains power distribution network equipment technology level and management level analysis result.
Owing to promoting power distribution network technical equipment, it is one of Main Means of realizing quality supply, lifting efficiency of service.Therefore the present invention analyzes the equipment technology of power distribution network and management level, to facilitate, the equipment technology of power distribution network and management level is understood in real time and is formulated corresponding improvement project and improve.Particularly, utilization statistics and the on-the-spot power distribution network data of receiving money gained, the relevant evaluation indexs such as rate, high loss distribution transforming ratio and the distribution of the equipment operation time limit that insulate to distribution network line radius of electricity supply, without oiling isolating switch ratio, medium-voltage line cable rate, middle pressure overhead transmission line are calculated, are analyzed.Calculate, analytical approach is as follows:
A, adopt following formula (1) to calculate basic routing line average length:
Middle this index of pressure basic routing line average length is applicable to 10kV medium voltage distribution network, is used for pressing in indirectly reflection the radius of electricity supply of basic routing line.
B, adopt following formula (2) computational scheme cable rate:
Consider that cable line is compared overhead transmission line investment price differential very large, before area does not form cable chemical industry journey normality Investment System, must strict control cables chemical industry journey.Therefore specifically need to determine that whether this index of medium-voltage line cable rate is as the analysis foundation of analyzing, evaluate medium voltage distribution network equipment quality according to cable line actual investment situation.
C, adopt following formula (3) to calculate overhead transmission line insulation rate:
D, adopt following formula (4) to calculate high loss distribution transforming ratio:
E, adopt following formula (5) computing equipment ratio, and then obtain the equipment operation time limit and distribute:
This index of the time limit of moving equipment can reflect that the major equipments such as distribution transforming, circuit, switch put into operation year certainly to statistics distribution situation working time in year, so by this index, can determine direction and the dynamics of power distribution network technological transformation.Particularly, the equipment operation time limit distributes, can be by by 10 years and following, and the ratio situation (equipment ratio) that more than 10～20 years and 20 years three sections are added up respectively the shared number of units of various kinds of equipment (or length) is learnt.
Tidal current analysis module, for based on described power distribution network data, carries out distribution power flow analysis, obtains distribution tidal current analysis result.
Wherein, the power supply type of concrete analysis power distribution network, in the load high ebb time-division, analyse the operation conditions of electrical network respectively, and utilize on this basis the corresponding data in power distribution network data to calculate, analyze to main transformer load factor, line load rate etc. the tidal current analysis of realizing power distribution network, and analyze on this basis, assess distribution network voltage level.
First, adopt formula (6) to calculate main transformer load factor:
Main transformer load factor is used for describing each of a certain electric pressure maximum load rate situation in main transformer year.
Secondly, adopt formula (7) to calculate medium-voltage line load factor:
This index of line load rate is used for assessing the actual utilization ratio of high-tension distributing line.After utilizing the load factor of above-mentioned formula (7) calculating main line, can continue to analyze the whole network line load rate distribution situation, specifically can in 30% and following, 30%～60%, 60%～90% and 90% above fourth gear add up respectively medium-voltage line number in the shared ratio situation of respective bins, and then can understand and grasp distribution integral body circuit load factor situation.For the too high circuit of load factor, large wire diameter wire is used in the present embodiment suggestion instead.
Based on the above calculation of tidal current to computational analysis gained such as main transformer load factor, line load rates, the quality of voltage of the whole network is analyzed, assessed, find out high-low voltage and put and propose modification measures.Such as installing a certain amount of low tension reactor etc. in some electric substation.
Fail-safe analysis module, for based on described power distribution network data, analyzes the reliability of power distribution network, obtains distribution network reliability analysis result.
Distribution network reliability refers to and is meeting under the prerequisite of mains supply security criterion, and the degree of reliability that power distribution network is powered continuously to user, in the present embodiment, specifically comprises statistical study and the reliability theory calculating of failure message to the fail-safe analysis of power distribution network.
Particularly, fail-safe analysis module is added up and is arranged the line fault information in power distribution network data Zhong Ge power supply station region, obtain the geographic distribution situation of various faults, and determine wherein main fault type and trouble spot, for example: when circuit fault data collection, failure message such as statistics number of lightning strokes etc., finds out circuit that lightning fault rate is high to obtain the indexs such as the distribution of circuit lightning fault, lightning fault rate.Thereby direction and dynamics that the lightning fault situation based on statistics can clear and definite power distribution network lightning protection technological transformation, formulate corresponding improvement project.
Afterwards, fail-safe analysis module is carried out reliability theory calculating according to corresponding reliability statistics data in power distribution network data to power distribution network, and the present embodiment adopts large scale business software RAMSES as the instrument of Calculation of Reliability, analysis.Concrete Calculation of Reliability, analysis process are: from power distribution network data, arrange, analyze, excavate reliability statistics data; Based on described reliability statistics data, set up Calculation of Reliability database; Set up Distribution Network Reliability assessment models, and utilize described model to carry out Calculation of Reliability; Analysis result, obtains distribution network reliability weak link.Follow-uply can, according to the distribution network reliability weak link of analyzing, formulate corresponding reliability improvement scheme.
Utilize the reliability assessment criterion data that RAMSES calculates to comprise following 3 basic indexs: annual power failure frequency, System average interruption duration, Suo Xie SAID and annual power off time.Fail-safe analysis module continues three basic indexs that calculate according to above RAMSES, calculates the index of overall importance of a series of measurement system power supply reliabilities such as average power supply available rate, expected loss of energy EENS, the expectation of power shortage time.
Load transfer ability analysis module, for based on described power distribution network data, analyzes the load transfer ability of power distribution network, obtains power distribution network load transfer ability analysis result.
Network load transfer ability refers to that transforming plant main transformer low-voltage side outlet is connected with contiguous transformer station (or electrical network), when maintenance or fault, take uninterrupted power supply as prerequisite, and maximum possible is the ability to adjacent substations (or contiguous electrical network) by the load switching in this region.
The size of network load transfer ability is subject to the impact of Substation Station internal wiring and distribution line Connection Mode, is subject to the restriction of adjacent substations main transformer capacity and distribution line current-carrying capacity level simultaneously.Specifically by following content being evaluated to the analysis realizing network load transfer ability: the load capacity of interconnection between (1) two Substation Station, i.e. the current capacity of circuit, the process that can calculate by above-mentioned trend completes.(2) main transformer capacity of the peak load ，Ji transformer station that transformer station can carry, specifically can obtain by distribution statistics.(3) calculate issuable ring current shock.Because there are pressure reduction or both sides short-circuit impedance difference in cyclization point both sides, after cyclization, there will be circulation, this may cause the actuating of relay in loop and trip.
Economic analysis module, for based on described power distribution network data, analyzes the economy of power distribution network, obtains power distribution network economic analysis result.
Economy and social effect are respectively to promote internal motivation and the external demand that power distribution network develops in a healthy way.By distribution network construction scheme is carried out to Economic Evaluation, can improve scientific level and the economic benefit of distribution network construction decision-making.
Particularly, economic analysis module is utilized the economy related data in power distribution network data, by the indexs such as unit line length cost, unit power transformation capacity cost, Unit Assets supply load, Unit Assets delivery, input-output ratio, line loss per unit being calculated, evaluated realize, power distribution network is carried out to economic analysis.
Wherein, unit line length cost, unit power transformation capacity cost can reflect respectively the average cost level of place circuit and distribution transforming equipment, specifically utilize respectively following formula (8) and formula (9) unit of account line length cost and unit power transformation capacity cost:
Input-output ratio is used for reflecting the return degree that distribution network planning construction is injected capital into, and adopts following formula (10) to calculate and obtains:
Consider that power distribution network operation income can be expressed as the poor of sales revenue and power purchase cost, operation expense, above formula is embodied as following formula (11):
Line loss per unit is an integrated technology economic target of reflection electrical network management level, is an important content of power department examination, is applicable to each electric pressure of power distribution network.The concrete formula (12) that adopts calculates acquisition:
Particularly, line loss per unit is divided into statistical line losses rate and Molded Line loss rate.Because line loss electric weight cannot directly be measured, statistical line losses rate is generally by poor by delivery and electricity sales amount, then difference is compared to computing with delivery obtains.Molded Line loss rate, claims again technical loss rate, is according to the parameter of power-supply unit and the method for operation and the trend distribution situation of the selected typical case of power network day, the line loss electric weight calculating through theory and the ratio of delivery.Statistical line losses rate is further divided into comprehensive line loss per unit and dividing potential drop line loss per unit, and same, Molded Line loss rate is also further divided into comprehensive line loss per unit and dividing potential drop line loss per unit.Wherein, dividing potential drop line loss per unit is to the in-depth of comprehensive line loss per unit and refinement, is the ratio of each electric pressure line loss electric weight and each electric pressure delivery, can find out falling of each electric pressure damage space by this this index of dividing potential drop line loss per unit.
Improve module 300, for when described power distribution network synthesis analysis result does not meet preset standard, formulate for power distribution network is carried out to improved power distribution network improvement project.
Particularly, preset the standard that the Comprehensive analysis results of power distribution network need to reach, need the power distribution network performance standard reaching, for example by the performance of power distribution network according to power distribution network equipment technology level and management level, distribution trend situation, load transfer ability, reliability level and economy level are divided into excellent, good, differ from three grades, the corresponding above-mentioned reliability level of predefined reflection of each grade, the numerical range of each index of the power distribution network synthesis performances such as economy level, for example preset standard can be decided to be on this basis good, when the power distribution network performance of analysis result data reflection of power distribution network comprehensively being analyzed to gained is when poor, improving the corresponding improvement project of module 300 formulation improves power distribution network, wherein, improvement project is specifically according to reflecting the calculating of the index of power distribution network various aspects of performance in power distribution network synthesis analysis result, analyze data and determine.For example, if power distribution network circuit reliability lower (high based on this circuit lightning fault rate), in improvement project, corresponding lightning measure can be proposed, for the too high circuit of load factor, use large wire diameter wire instead, when low voltage point is too low in calculation of tidal current, in corresponding electric substation, install low tension reactor of some etc.
For in the Comprehensive analysis results of comprehensive analysis module 200, each does not meet the index of preset standard, corresponding innovative approach is all proposed in improvement project as far as possible, in the present embodiment, the improvement project of improving module 300 propositions is specially the set of series of improving measures.
Wherein, authentication module 400 comprises static security degree authentication module, feeder line radius of electricity supply authentication module, circuit maximum possible overload rate authentication module, load loss rate authentication module, user's loss percentage authentication module, connectivity number authentication module and capacity of short circuit correction verification module.
Static security degree authentication module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, the static security degree of the power distribution network after computed improved, and the safe reliability of power distribution network after improving according to described static security degree checking.
Power distribution network static security degree refers to, when certain region of power distribution network has a power failure, by power distribution network load transfer, in the situation that not considering whether overcurrent to be caused, as much as possible recover the lower end load power supply causing due to power failure, recovering to recover after block supply, calculate the load factor of circuit in power distribution network, this value is as the static security degree of the power distribution network under current fault zone.The power distribution network safe coefficient that different " static security degree " reflects is different, particularly, static security degree value represents that within the scope of 0-0.7 power distribution network is very safe, in the time of within the scope of 0.7-0.9, represent power distribution network safety, in the time of within the scope of 0.9-1.0, represent that power distribution network is risky, in the time of within the scope of 1.1-∞, represent that power distribution network is very dangerous.
In the present embodiment, power distribution network after static security degree authentication module improves improvement project carries out emulation, specifically after emulation improves power distribution network likely after the load transfer in situation, calculate the maximum load rate that distribution network line can reach, find out the circuit of most probable overload in network and the degree of overload, the circuit that may transship, as the object of emphasis transformation, adjusts accordingly improving the improvement project of module 300 formulations.
Feeder line radius of electricity supply authentication module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, the radius of electricity supply of every of power distribution network feeder line after computed improved, and the safe reliability of power distribution network after improving according to described radius of electricity supply checking.
Feeder line radius of electricity supply authentication module is according to the radius of electricity supply of every feeder line of topological relationship calculation of power distribution network after the improvement of emulation.Using the long feeder line of radius of electricity supply as transformation object, reply improves the improvement project that module 300 formulates and adjusts mutually, shortens the radius of electricity supply of this feeder line in improvement project.
Circuit maximum possible overload rate module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, records the maximum current that every feeder line of power distribution network may reach, and the safe reliability of power distribution network after improving according to described maximum current checking.
Particularly, circuit maximum possible overload rate module is improved all possible power-off condition of rear power distribution network based on analogue simulation, record the maximum current that every feeder line may reach, and using maximum current as power distribution network phase feeder line whether need transformation according to (maximum current surpasses certain threshold value, and corresponding feeder line needs transformation).If certain feeder line needs transformation, improvement project is adjusted, in improvement project, add feeder line and transform corresponding information.
Load loss rate authentication module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, calculates the load loss rate of power distribution network, and according to described load loss rate checking, improves the economy of rear power distribution network.
The all possible power-off condition of power distribution network after load loss rate authentication module improves based on analogue simulation, calculated load loss percentage.After processing by recovery scheme when load loss rate refers to and has a power failure, still need the load proportion having a power failure, load loss rate is relevant to the economy of electric power enterprise, and its electric weight that value is less loses while showing to have a power failure is fewer.In the present embodiment, if the load loss rate calculating is greater than certain threshold value, improvement project is adjusted accordingly to reduce load loss rate.
User's loss percentage authentication module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, calculates user's loss percentage of power distribution network, and according to the safe reliability of described user's loss percentage checking power distribution network.
User's loss percentage authentication module, after improving based on analogue simulation, all possible power-off condition of power distribution network, calculates user's loss percentage, and the value of user's loss percentage is less shows that electric network reliability is higher.If the user's loss percentage calculating is greater than certain threshold value, improvement project is adjusted accordingly to reduce user's loss percentage.
Connectivity number authentication module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, obtains the connectivity number in each region of power distribution network, and according to described connectivity number checking, improves the safe reliability of rear power distribution network.
Because power distribution network is the network of an open loop operation, when building, target is to realize hand in hand multi-joint network, be in theory one independently region have more contact paths and other feeder line to realize contact, just there are more possibilities for load that turns, because power distribution network is requirement closed loop design open loop operation, must " unify platform switch, a disconnected switch ", therefore this K (N-1+1) expression for index of connectivity number in the present embodiment, K represents to complete the number that load turns band, its numerical value is larger, and distribution network reliability is higher.Therefore, connectivity number authentication module, based on emulation, obtains the connectivity number in each region of power distribution network, if its numerical value is less than predetermined threshold value, improvement project is adjusted accordingly to increase connectivity number.
Capacity of short circuit correction verification module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, obtains the capacity of short circuit of each switch of power distribution network, and joins according to described capacity of short circuit checking that the safe reliability of putting me.
Power distribution network has been installed many switches on distribution line, when fault occurs these switches whether can complete smoothly excision fault current be very important, this relates to the safe reliability of distribution net equipment, and the capacity of short circuit of all switches is one of important indicators of reflection power distribution network capability in handling accident.For this situation, the situation of power distribution network after capacity of short circuit correction verification module analogue simulation improves when breaking down, and whether each switch can complete excision fault current smoothly during validation fault, if the result, for certain switch can not complete excision fault current smoothly, adjusts accordingly and makes this switch can complete smoothly excision fault current improvement project.
Visible, authentication module 400 carries out by the power distribution network to after improving the validity that the improvement project of improving module 300 propositions is verified in emulation, to facilitate those skilled in the art to understand and grasp in real time the concrete impact of improvement project on power distribution network.And then improvement project is adjusted can be lower in the validity of improvement project time, to realize to a greater degree, power distribution network is improved, optimized. in good time
To sum up, the power distribution network synthesis analytic system that the embodiment of the present invention provides has comprised data acquisition module 100, comprehensive analysis module 200, has improved module 300 and authentication module 400.The power distribution network data that comprehensive analysis module 200 obtains based on data acquisition module 100 are comprehensively analyzed power distribution network, improve module 300 when the analysis result that comprehensively 200 pairs of power distribution networks of analysis module are comprehensively analyzed gained does not meet goal-selling, for example, during power distribution network poor-performing, formulation is carried out improved power distribution network improvement project to power distribution network, the validity of authentication module 400 simulating, verifying improvement projects.Because 200 pairs of power distribution networks of comprehensive analysis module that the present invention comprises by it are comprehensively analyzed, and by improvement module 300, when analysis result does not meet preset standard, formulate corresponding improvement project power distribution network is improved, be that the present invention comprehensively analyzes power distribution network, and using preset standard and as benchmark, analysis result is passed judgment on, when not meeting preset standard, formulates analysis result corresponding improvement project, thereby the present invention has realized power distribution network has been carried out to comprehensive assessment and analysis, for comprehensively analyzing power distribution network, those skilled in the art provide convenience, it is the construction of power distribution network simultaneously, operation and management provides reference, reliability and the power supply quality of power distribution network power supply have been improved.
Embodiment bis-
The embodiment of the present invention two discloses a kind of power distribution network synthesis analytical approach, refers to Fig. 2, and the method comprises:
S1: obtain the power distribution network data within the scope of presupposition analysis.
S2: based on described power distribution network data, power distribution network is comprehensively analyzed, obtained power distribution network synthesis analysis result.
Wherein, step S2 specifically comprises: based on described power distribution network data, the equipment technology of power distribution network and management level are analyzed, obtained power distribution network equipment technology level and management level analysis result; Based on described power distribution network data, carry out distribution power flow analysis, obtain distribution tidal current analysis result; Based on described power distribution network data, the reliability of power distribution network is analyzed, obtain distribution network reliability analysis result; Based on described power distribution network data, the load transfer ability of power distribution network is analyzed, obtain power distribution network load transfer ability analysis result; Based on described power distribution network data, the economy of power distribution network is analyzed, obtain power distribution network economic analysis result.
S3: when described power distribution network synthesis analysis result does not meet preset standard, formulate for power distribution network is carried out to improved power distribution network improvement project.
S4: based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, verify the performance of utilizing the power distribution network after described improvement project is improved.
Wherein, step S4 specifically comprises: based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, and the static security degree of the power distribution network after computed improved, and the safe reliability of power distribution network after improving according to described static security degree checking; Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, the radius of electricity supply of every of power distribution network feeder line after computed improved, and the safe reliability of power distribution network after improving according to described radius of electricity supply checking; Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, record the maximum current that every feeder line of power distribution network may reach, and the safe reliability of power distribution network after improving according to described maximum current checking; Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, calculate the load loss rate of power distribution network, and according to described load loss rate checking, improve the economy of rear power distribution network; Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, calculate user's loss percentage of power distribution network, and according to the safe reliability of described user's loss percentage checking power distribution network; Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, obtain the connectivity number in each region of power distribution network, and according to described connectivity number checking, improve the safe reliability of rear power distribution network; Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, obtain the capacity of short circuit of each switch of power distribution network, and according to the safe reliability of described capacity of short circuit checking power distribution network.
For the disclosed power distribution network synthesis analytical approach of the embodiment of the present invention two, because it is corresponding with the disclosed power distribution network synthesis analytic system of embodiment mono-, so that describes is fairly simple, relevant similarity refers to the explanation of power distribution network synthesis analytic system part in embodiment mono-, no longer describes in detail herein.
In sum, the present invention realized to power distribution network carry out comprehensive, determine quantitative analysis, and on the basis of quantitative test, according to analysis result, for the weak link of power distribution network, formulate corresponding power distribution network improvement project, to realize, power distribution network is optimized, is improved, thereby construction, operation and management that the present invention is power distribution network provide reference, and then reliability and the power supply quality of power distribution network power supply have been improved.
It should be noted that, each embodiment in this instructions all adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
While for convenience of description, describing above device, system, with function, being divided into various modules describes respectively.Certainly, when implementing the application, the function of each module can be realized in same or a plurality of software and/or hardware.
As seen through the above description of the embodiments, those skilled in the art can be well understood to the mode that the application can add essential general hardware platform by software and realizes.Understanding based on such, the part that the application's technical scheme contributes to prior art in essence in other words can embody with the form of software product, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be personal computer, server, or the network equipment etc.) carry out the method described in some part of each embodiment of the application or embodiment.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a power distribution network synthesis analytic system, is characterized in that, comprise data acquisition module, comprehensive analysis module, improve module and authentication module, wherein:
Described data acquisition module, for obtaining the power distribution network data within the scope of presupposition analysis;
Described comprehensive analysis module, for based on described power distribution network data, comprehensively analyzes power distribution network, obtains power distribution network synthesis analysis result;
Described improvement module, for when described power distribution network synthesis analysis result does not meet preset standard, formulates for power distribution network is carried out to improved power distribution network improvement project;
Described authentication module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, verifies the performance of utilizing the power distribution network after described improvement project is improved.
2. power distribution network synthesis analytic system according to claim 1, it is characterized in that, described comprehensive analysis module comprises equipment technology and management level analysis module, distribution tidal current analysis module, fail-safe analysis module, load transfer ability analysis module and economic analysis module, wherein:
Described equipment technology and management level analysis module, for based on described power distribution network data, analyze the equipment technology of power distribution network and management level, obtains power distribution network equipment technology level and management level analysis result;
Described tidal current analysis module, for based on described power distribution network data, carries out distribution power flow analysis, obtains distribution tidal current analysis result;
Described fail-safe analysis module, for based on described power distribution network data, analyzes the reliability of power distribution network, obtains distribution network reliability analysis result;
Described load transfer ability analysis module, for based on described power distribution network data, analyzes the load transfer ability of power distribution network, obtains power distribution network load transfer ability analysis result;
Described economic analysis module, for based on described power distribution network data, analyzes the economy of power distribution network, obtains power distribution network economic analysis result.
3. power distribution network synthesis analytic system according to claim 2, it is characterized in that, described authentication module comprises static security degree authentication module, feeder line radius of electricity supply authentication module, circuit maximum possible overload rate authentication module, load loss rate authentication module, user's loss percentage authentication module, connectivity number authentication module and capacity of short circuit correction verification module, wherein:
Described static security degree authentication module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, the static security degree of the power distribution network after computed improved, and the safe reliability of power distribution network after improving according to described static security degree checking;
Described feeder line radius of electricity supply authentication module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, the radius of electricity supply of every of power distribution network feeder line after computed improved, and the safe reliability of power distribution network after improving according to described radius of electricity supply checking;
Described circuit maximum possible overload rate module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, record the maximum current that every feeder line of power distribution network may reach, and the safe reliability of power distribution network after improving according to described maximum current checking;
Described load loss rate authentication module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, calculates the load loss rate of power distribution network, and according to described load loss rate checking, improves the economy of rear power distribution network;
Described user's loss percentage authentication module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, calculates user's loss percentage of power distribution network, and according to the safe reliability of described user's loss percentage checking power distribution network;
Described connectivity number authentication module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, obtains the connectivity number in each region of power distribution network, and according to described connectivity number checking, improves the safe reliability of rear power distribution network;
Described capacity of short circuit correction verification module, for based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, obtains the capacity of short circuit of each switch of power distribution network, and according to the safe reliability of described capacity of short circuit checking power distribution network.
4. a power distribution network synthesis analytical approach, is characterized in that, comprising:
Obtain the power distribution network data within the scope of presupposition analysis;
Based on described power distribution network data, power distribution network is comprehensively analyzed, obtain power distribution network synthesis analysis result;
When described power distribution network synthesis analysis result does not meet preset standard, formulate for power distribution network is carried out to improved power distribution network improvement project;
Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, verify the performance of utilizing the power distribution network after described improvement project is improved.
5. power distribution network synthesis analytical approach according to claim 4, is characterized in that, describedly based on described power distribution network data, power distribution network is comprehensively analyzed, and obtains power distribution network synthesis analysis result and specifically comprises:
Based on described power distribution network data, the equipment technology of power distribution network and management level are analyzed, obtain power distribution network equipment technology level and management level analysis result;
Based on described power distribution network data, carry out distribution power flow analysis, obtain distribution tidal current analysis result;
Based on described power distribution network data, the reliability of power distribution network is analyzed, obtain distribution network reliability analysis result;
Based on described power distribution network data, the load transfer ability of power distribution network is analyzed, obtain power distribution network load transfer ability analysis result;
Based on described power distribution network data, the economy of power distribution network is analyzed, obtain power distribution network economic analysis result.
6. power distribution network synthesis analytical approach according to claim 5, is characterized in that, described based on utilizing the performance of the power distribution network after described improvement project is improved specifically to comprise to utilizing the power distribution network after described improvement project is improved to carry out emulation, verifying:
Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, the static security degree of the power distribution network after computed improved, and the safe reliability of power distribution network after improving according to described static security degree checking;
Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, the radius of electricity supply of every of power distribution network feeder line after computed improved, and the safe reliability of power distribution network after improving according to described radius of electricity supply checking;
Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, record the maximum current that every feeder line of power distribution network may reach, and the safe reliability of power distribution network after improving according to described maximum current checking;
Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, calculate the load loss rate of power distribution network, and according to described load loss rate checking, improve the economy of rear power distribution network;
Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, calculate user's loss percentage of power distribution network, and according to the safe reliability of described user's loss percentage checking power distribution network;
Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, obtain the connectivity number in each region of power distribution network, and according to described connectivity number checking, improve the safe reliability of rear power distribution network;
Based on to utilizing the power distribution network after described improvement project is improved to carry out emulation, obtain the capacity of short circuit of each switch of power distribution network, and according to the safe reliability of described capacity of short circuit checking power distribution network.
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