CN108631295A - The online accurate calculation system of theory wire loss of measured data - Google Patents
The online accurate calculation system of theory wire loss of measured data Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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Abstract
The invention discloses a kind of online accurate calculation systems of theory wire loss of measured data, including following process：1）, actual measurement before preparatory process；2）, data survey process；3）, data preparation process；4）, line loss calculation process；5）, interpretation of result.For this system in datagraphic acquisition, method for computing data diversity, result of calculation is analyzed and the output facet of result of calculation report and summary report, there is prodigious advantage；Result of calculation can be directed to and carry out line loss analyzing and drop damage aid decision, realize that the drops such as transmission and distribution network idle work optimization, Substation Economic Operation, Loss Allocation, the analysis of harmonic wave negative phase-sequence, low-voltage platform area power supply position optimization, highly energy-consuming distribution transforming replacement, voltage optimization suggestion, wire replacing, the unbalanced adjustment of three-phase damage decision-making function；Different result of calculation reports can be selected according to the demand of client, and can generate report according to load measurement and the format of line loss theoretical calculation analysis report template, facilitated the later stage to fill in report, effectively improved the accuracy and working efficiency of line loss calculation.
Description
Technical field
The present invention designs grid line loss calculating field, specially a kind of online accurate calculation system of the theory wire loss of measured data
System.
Background technology
With the continuous development of society with progress, especially scientific and technical rapid development, people from slash-and-burn cultivation to
The electrified, information age of today, and during the rapid development of modern society, electric energy provides for the development of most industries
Basic and powerful kinetic energy is supported, and social development is increasing for the demand and dependence of electric energy.And due to
Power grid gathers, and electric energy is delivered to by conducting wire in terminal procedures, electric energy loss can occurs because of many reasons, when all
When minor losses are accumulated to together and loss that one huge number.
Theoretical line loss caluclation work is task that electric power enterprise must be done every year, it is to choose some day in 1 year to be
Day is represented, calculates the line loss per unit of this day the whole network, and then analyze the electricity of the circuit of each voltage class of the whole network, transformer and element
Measure damaed cordition, find out power grid weight, light damage circuit and again, gently damage transformer, the weak link in operation of power networks is found, to inspection
Test Electric Power Network Planning and transformation level, the economic benefit important role for promoting electric power enterprise.Carry out theoretical line loss caluclation in addition to
Except the theoretical line loss caluclation method to have had, most basic is to need to provide accurate electric network information, these data are main
There are topological structure of electric, device parameter and operation data, this is the data source for carrying out theoretical line loss caluclation；It is only accurate, timely
Correct Calculating Network Theoretical Line Loss result of calculation could be calculated in theoretical line loss caluclation system by providing these information, could be accurate
Reflect the actual conditions of power grid.
The online accurate calculation system of theory wire loss of measured data is to carry out a kind of of load measurement work to apply backman
Tool.It can be not only that enterprises of managing electric wire netting grasp power grid comprehensively and equipment is run that line loss load measurement is analyzed with theoretical line loss caluclation
Loading condition rationally assesses electric network composition, Correct Analysis line loss composition and variation, instructs power grid construction and transformation, formulates drop damage
Planning provides important reference；Simultaneously also to further specification line loss basic management, improve line loss personnel professional skill and
Ability to work has positive impetus.
The overall situation factor that the development of load measurement work for many years is limited by grid automation information system is more, such as specially
Application No. is a kind of online computing system of Calculating Network Theoretical Line Loss of CN201510574847- and methods for profit, take full advantage of electric power enterprise
The function of each operation system of industry, realized in the form of service interface the automatically generating of graph topology structure, device parameter from
It is dynamic read, operation data is automatically imported, and realize the inquiry, verification and feedback function of data in systems, and calculate
As a result graphical representation box analysis.The online computing system of theory wire loss of invention design realizes that each service data consistence is same
Step, it is actual traffic data to make the data currently calculated, effectively improves the accuracy rate of line loss calculation result and the efficiency of work, subtracts
Light computing staff's collection, the huge amount of labour for handling data, finally obtain real-time, accurate, valuable line loss calculation as a result,
It can comprehensively, correctly reflect the electric quantity loss situation during transmitting electric power.
But there is also method precision not high, analysis means unicity, multi-system information isolated island etc. is many incomplete to ask
Topic.
Therefore it provides perfect on the basis of a kind of existing load measurement and theoretical calculation tool, structure one is more complete,
The online accurate calculation platform of theory wire loss of the measured data of science, has been a good problem to study.
Invention content
In order to overcome above-mentioned the problems of the prior art, it is accurate online that the present invention provides a kind of theory wire loss of measured data
Other system datas are mainly imported into system database by computing system in real time, such as active and reactive, voltage, electric current,
It is to rely on existing line loss theoretical calculation figure, line loss theoretical calculation data and load measurement data is arranged, are calculated, are divided
It analyses, summarize and remind heavy duty in time, damage equipment again；Load measurement and line loss theoretical calculation result consolidated statement are generated as requested；
Report is generated according to load measurement and the format of line loss theoretical calculation analysis report template.
What the purpose of the present invention was achieved：
The online accurate calculation system of theory wire loss of measured data, including following process：1) preparatory process before, surveying；2)、
Data survey process；3), data preparation process；4), line loss calculation process；5), interpretation of result.
Preparatory process includes before the actual measurement：It is selected to represent day；Account parameter is collected, network structure is drawn；Personnel's group
Calculating, training and actual measurement is knitted to arrange；Measuring instrument emphasis Inspection and analysis；Metering critical point measuring point is appraised and decided；Load measurement record is unified
Format；
The data actual measurement process includes artificial meter reading and automatic data logging on schedule；By meter reading supply network include 35kV and
The above supply network, 6-10kV distribution networks and 380v secondary networks；
The 35kV and the above supply network meter reading data include the 24 small of measuring point, power supply critical point point and load critical point point
Shi Zhengdian active power, reactive power, active energy, capacity of idle power, voltage, electric current and whole day add up electricity or power because
Element；The 6-10kV distribution network meter reading datas include feeder line outlet, small power supply point or have the high pressure of corresponding measurement parameter negative
The whole day active energy of lotus point, capacity of idle power, electric current, voltage, public change and special change represent to copy day and see electricity on schedule within 24 hours；
The 380v secondary network meter reading datas include total power supply volume of selected typical distribution taiwan area, user's electricity sales amount, are had ready conditions
When add the maximum load and first and last terminal voltage for surveying selected each low-voltage distribution wire of several distribution；
The data preparation process include circuit, transformer, capacitor, reactor, phase modifier, generator power supply point,
The data preparation of load point and whole day on off state；
The circuit arranges data and includes first and last end node, voltage class, length, model, electric parameter and represent day
24 hours voltage, electric current, active power, reactive power, active energy, capacity of idle power and whole day, whole month electricity on schedule；It is described
Transformer arrange data include substation's name, it is number, each side bus on-off state, rated capacity, rated voltage, short-circuit electric
Pressure, short circuit loss, no-load current, no-load loss, 24 operational taps change and represent 24 hours days positive constant voltage, electric current, have
Work(power, reactive power, active energy, capacity of idle power and whole day, whole month electricity；It includes institute that the capacitor, which arranges data,
It puts into operation capacity and time of putting into operation, dielectric loss constant in node, rated voltage, capacitor；The arrangement data of the reactor
Including place node, rated voltage, rated current, percentage reactance, single-phase nominal loss；The arrangement data of the phase modifier
Electricity is made a copy of including place node name, subsidiary engine；The generator power supply point arranges node name, node class where data packet includes
Type, node-classification, entirety and whole month electricity, 24 hours active power, reactive power, electric current and voltage on schedule；The load
Point data arranges：Place node name, node type, node-classification, entirety and whole month electricity, 24 hours wattful powers on schedule
Rate, reactive power, electric current and voltage；
The line loss calculation process, it is desirable that computer personnel, computer and related software are in place；Specifically include data
Typing represents day calculating, data output and drop damage analysis；
The data input includes that figure or table input, automatic data collection format conversion, data error detection, network are opened up
Flutter analysis；It represents and calculates including forming line loss calculation data and trend line loss calculation day；The data output includes structure ginseng
Number and operating parameter statistical form, original paper loss detail list, subelement, component voltage grade attrition table, result summarize and report；It is described
Drop damage analysis procedure include the network rebuilding, changes of operating modes, operating parameter variation, again damage line and again damage become analysis, load
Rate is distributed；
The interpretation of result process includes the reasonability compared with statistical value or empirical value with analysis result；Specifically
For：A, the Correctness checking of the reasonability of measured data and input data is checked for repeatedly inputting and be computed repeatedly；B, whether
It is incomplete and use rough conversion data in the presence of data are calculated, including reactive power converted by average power factor；C, contribute,
Load can reversely cause the net electricity excessively that process electricity increases emptily with prescribed direction；D, network reduction is analyzed；E, other do not count loss,
Including meter loss, low pressure network loss；F, Macro or mass analysis, drop damage comparative analysis, there are problems and suggested measures.
Positive beneficial effect：This system datagraphic obtain, method for computing data diversity, result of calculation analysis and
The output facet of result of calculation report and summary report has prodigious advantage.This system can directly be extracted from other systems
Data, import system are calculated, and the convenience of data acquisition is improved；In terms of distribution calculating, a variety of computational methods are provided,
Such as coulometry, volumetric method, rms current method, trend exact algorithm, average current model meet a variety of demands of client；
Result of calculation can be directed to and carry out line loss analyzing and drop damage aid decision, realize transmission and distribution network idle work optimization, substation's economy fortune
Row, the analysis of harmonic wave negative phase-sequence, low-voltage platform area power supply position optimization, highly energy-consuming distribution transforming replacement, voltage optimization suggestion, is led at Loss Allocation
The drops such as line is replaced, the unbalanced adjustment of three-phase damage decision-making function；Different result of calculation can be selected according to the demand of client
Report, such as daily sheet, moon sheet, and can be generated according to load measurement and the format of line loss theoretical calculation analysis report template
Report, facilitates the later stage to fill in report, effectively improves the accuracy and working efficiency of line loss calculation.
Description of the drawings
Fig. 1 is the load measurement and line loss theoretical calculation procedure chart of the present invention；
Fig. 2 is the load measurement and theoretical calculation system flow chart of the present invention；
Fig. 3 is that business splits comparison diagram before and after flow during the present invention surveys；
Fig. 4 is the data flowchart of the present invention.
Specific implementation mode
Below in conjunction with the accompanying drawings, the present invention is described further：
As shown in Figure 1 and Figure 2, the online accurate calculation system of the theory wire loss of measured data, including following process：1) it, surveys
Preceding preparatory process；2), data survey process；3), data preparation process；4), line loss calculation process；5), interpretation of result.
Preparatory process includes before the actual measurement：It is selected to represent day；Account parameter is collected, network structure is drawn；Personnel's group
Calculating, training and actual measurement is knitted to arrange；Measuring instrument emphasis Inspection and analysis；Metering critical point measuring point is appraised and decided；Load measurement record is unified
Format；
The data actual measurement process includes artificial meter reading and automatic data logging on schedule；By meter reading supply network include 35kV and
The above supply network, 6-10kV distribution networks and 380v secondary networks；
The 35kV and the above supply network meter reading data include the 24 small of measuring point, power supply critical point point and load critical point point
Shi Zhengdian active power, reactive power, active energy, capacity of idle power, voltage, electric current and whole day add up electricity or power because
Element；The 6-10kV distribution network meter reading datas include feeder line outlet, small power supply point or have the high pressure of corresponding measurement parameter negative
The whole day active energy of lotus point, capacity of idle power, electric current, voltage, public change and special change represent to copy day and see electricity on schedule within 24 hours；
The 380v secondary network meter reading datas include total power supply volume of selected typical distribution taiwan area, user's electricity sales amount, are had ready conditions
When add the maximum load and first and last terminal voltage for surveying selected each low-voltage distribution wire of several distribution；
The data preparation process include circuit, transformer, capacitor, reactor, phase modifier, generator power supply point,
The data preparation of load point and whole day on off state；
The circuit arranges data and includes first and last end node, voltage class, length, model, electric parameter and represent day
24 hours voltage, electric current, active power, reactive power, active energy, capacity of idle power and whole day, whole month electricity on schedule；It is described
Transformer arrange data include substation's name, it is number, each side bus on-off state, rated capacity, rated voltage, short-circuit electric
Pressure, short circuit loss, no-load current, no-load loss, 24 operational taps change and represent 24 hours days positive constant voltage, electric current, have
Work(power, reactive power, active energy, capacity of idle power and whole day, whole month electricity；It includes institute that the capacitor, which arranges data,
It puts into operation capacity and time of putting into operation, dielectric loss constant in node, rated voltage, capacitor；The arrangement data of the reactor
Including place node, rated voltage, rated current, percentage reactance, single-phase nominal loss；The arrangement data of the phase modifier
Electricity is made a copy of including place node name, subsidiary engine；The generator power supply point arranges node name, node class where data packet includes
Type, node-classification, entirety and whole month electricity, 24 hours active power, reactive power, electric current and voltage on schedule；The load
Point data arranges：Place node name, node type, node-classification, entirety and whole month electricity, 24 hours wattful powers on schedule
Rate, reactive power, electric current and voltage；
The line loss calculation process, it is desirable that computer personnel, computer and related software are in place；Specifically include data
Typing represents day calculating, data output and drop damage analysis；
The data input includes that figure or table input, automatic data collection format conversion, data error detection, network are opened up
Flutter analysis；It represents and calculates including forming line loss calculation data and trend line loss calculation day；The data output includes structure ginseng
Number and operating parameter statistical form, original paper loss detail list, subelement, component voltage grade attrition table, result summarize and report；It is described
Drop damage analysis procedure include the network rebuilding, changes of operating modes, operating parameter variation, again damage line and again damage become analysis, load
Rate is distributed；
The interpretation of result process includes the reasonability compared with statistical value or empirical value with analysis result；Specifically
For：A, the Correctness checking of the reasonability of measured data and input data is checked for repeatedly inputting and be computed repeatedly；B, whether
It is incomplete and use rough conversion data in the presence of data are calculated, including reactive power converted by average power factor；C, contribute,
Load can reversely cause the net electricity excessively that process electricity increases emptily with prescribed direction；D, network reduction is analyzed；E, other do not count loss,
Including meter loss, low pressure network loss；F, Macro or mass analysis, drop damage comparative analysis, there are problems and suggested measures.
Load measurement and theoretical calculation system index parameter：
1. day index
2. moon index
3. year index
4 main transformer day index
5. transmission line of electricity day index
Note：Circuit maximum load rate is more than or equal to 80% for heavy duty；It is underloading less than 30%；It is overload more than 100%；Line
The road Economic load rate that is averaged is attached most importance to damage more than 100%.
1. surveying capacity-load ratio (operation capacity-load ratio) --- put into operation capacity
2. installing capacity-load ratio=installed capacity/peak load (coefficient for being multiplied by 0.95)
3. surveying capacity-load ratio=actual measurement capacity/peak load (coefficient for being multiplied by 0.95)
4. change rate：(this-last time)/last time * 100%
5. actual measurement rate：Put into operation number of units/installation number of units * 100% (circuit is figured according to item)
6. the number of units of number of units/installation of actual measurement rate=actual measurement
Load measurement and theoretical calculation system-computed formula：
When active computer program carries out theoretical line loss caluclation, 35kV or more power transmission networks and 6-10kV and following power distribution network
Processing mode is different.We will introduce their Computing Principle respectively below.
One, the Computing Principle of 35kV and the above power network
35kV or more power network are handled using calculating power system load flow.
We briefly introduce Computing Principle by taking Newton-Raphson approach as an example below.
(1) first it is row power equation：
In Load flow calculation, we are divided into three classes the node in network：Balance nodes, PQ nodes, PV node.We know
The power of each point is S in road power gridi=Pi+jQi,
It is also known that：Si=Ui(UiYi)=UiUi(Gi+jBi)、
The polar coordinates type U of node voltagei=Uiejθ=Ui(cosθi+jsinθi)、
According to Kirchhoff's theoremJ ε i indicate all node j being directly connected with i in addition to itself.
Then node power
Wherein：YijTransadmittance between node, Yij=Gij+jBij；
θijPhase difference of voltage between node, θij=θi-θj。
The real part of above formula (formula 1), imaginary part is separated, then obtain two equations：
It is obvious, the node of how many known power of network, so that it may to list the how many equations shaped like formula (formula 2),
Form a huge equation group, referred to as power equation group.In fact, the node in power grid cannot arrange outside in addition to balance nodes,
Other nodes (PQ nodes and PV node) can list such formula.
To PV node, we reset such a formula：Wherein eiAnd fiRespectively in iterative process
The node voltage real and imaginary parts acquired.
(2) row update equation group
Update equation is the restrictive condition of iteration.Also known as error equation.
If sharing n node, including a balance nodes, (m-1) a PQ nodes, (n-m) a PV node in network.
Firstly the need of the node in network in addition to balance nodes,
That is PQ nodes and PV node, row shaped like：Formula, share (n-
1) a；
Then again to PQ nodes, row shaped like：Formula, share (m-1)
It is a；
Finally again to PV node arrange shaped like：Formula, share (n-m) it is a.
The above three parts formula constitutes a huge equation group, including 2 (n-1) a independent equations, referred to as tentatively
Update equation formula, a series of Mathematical treatment is then carried out again to this update equation formula.
Two, the theoretical line loss caluclation of 6-10kV or less power network
In 35kV or less power distribution networks, we do not use calculating power system load flow usually, and use " substitutional resistance method seeks resistance " and " K
Y-factor method Y seeks electric current ", then recycle Computer Simulation program to carry out integral and calculating.
We briefly enumerate the formula of several computational methods below：
(1) rms current method
Wherein：IjfThe rms current of day is represented for circuit head end,
Rd·∑It is the sum of line conductor substitutional resistance and transformer winding substitutional resistance for the total substitutional resistance of circuit；
Ap·gFor the active power supply volume of reality of circuit month, kWh；
ArjTo represent per day daily active power supply volume, kWh；
T is circuit actual run time, h；NtFor the circuit moon practical number of days that puts into operation, Nt=t/24
Rms current substitution table day, 24 Current calculations were got, so its applicable situation is：It is more balanced for electricity consumption,
Load peak-valley difference is smaller, and the relatively flat power grid of daily load curve calculates.
(2) average current model
Wherein：IpjThe average current of day is represented for circuit head end,
Ap·gFor the active power supply volume of reality of circuit month, kWh；K is line load curvilinear characteristic coefficient, is set in advance；
Rd·∑It is the sum of line conductor substitutional resistance and transformer winding substitutional resistance for the total substitutional resistance of circuit.
(3) coulometry
Wherein：Ap·gFor the active power supply volume of reality of circuit month, kWh；
AQ·gFor the idle power supply volume of reality of circuit month, kvarh；
Up·jFor circuit average running voltage, kV；K is line load curvilinear characteristic coefficient.
This method must be known by the electricity of line end transformer, and substitutional resistance is sought with " electricity seeks resistance method ".Then line is used
Road head end electricity and the k-factor of setting seek electric current.Since the active power supply volume of circuit and the equal value of idle power supply volume are in electric energy
Table, therefore, such method is not only simple easy, and precision is higher, is existing common new method.
It is as follows specifically to improve content：
1) load measurement report and theoretical calculation analysis report separate service department split the business filled in and carry out Macro or mass analysis
Flow content is innovated.
Carried out by load measurement and theoretical calculation work and be related to electric company's regulatory authorities, to load from business
Actual measurement and theoretical calculation software carry out careful business fractionation.Original report, report summarize pattern：The specific responsibility of O＆M department summarizes
Related statements, report, are then handed down to each department correlation assistant director by scheduling, fortune inspection, marketing, each assistant director's result of calculation report of hair plan
It is analyzed, last O＆M department is scheduling, fortune inspection, marketing, the report of Fa Cesige departments, report analysis ingredient manual tabulation
The report total to one.Existing report, report summarize pattern：Scheduling, fortune inspection, marketing, by software, respectively department enters hair plan
Mouth fills in report, reporting relevant contents, fills in report, report state according to each department, the specific responsibility of O＆M department summarizes total report
Table, report analysis content.
Before and after business fractionation flow chart as shown in Figure 3 shown in comparison diagram：
Load measurement and theoretical calculation software carry out careful business and split advantage：
1, each department's management responsibility range is specified after business subdivision, specification operation flow.Department's division of labor is clear, subtracts
Inter-sectional work is lacked mutually to evade, has improved load measurement and theoretical calculation working efficiency, merged the work of each department personnel
Make achievement.
2, report content is filled in by software systems entrance, avoids caused by data reporting is changed by hand by each department and respectively refers to
Mathematical logic mistake is marked, has ensured authenticity, the validity of load measurement and theoretical calculation work.
3, each department's specific responsibility load measurement and theoretical calculation job progress, by software can be clear look into
See, each department, which calculates data and report analysis content, can be pin-pointed to related personnel, conveniently summarize specific responsibility monitoring work into
Degree and positioning responsible person concerned.
2) it creates middle layer data storage center and merges related data needed for each system loading actual measurement and theoretical calculation.
Load measurement work carry out coverage it is extensive, from high pressure to low pressure, from be dispatched to marketing, not only include conveying electricity
Overall process also relates to each regulatory authorities of electric company.Links have a different related management systems, each system it
Between data it is shared there is no realizing, but exist as isolated island one by one.The foundation of topological model, the importing of related data are deposited
In drawbacks such as work repetition, heavy workloads.
Middle layer data storage center is created from application to solve above-mentioned drawback system, data storage center is responsible for
Load measurement and the storage of theoretical calculation system platform related data, integrate SCADA dispatching system, electric energy system, monitoring power distribution
The related systems data such as system, PMS2.0 systems, electricity consumption acquisition system, extract each system data, are converted, are cleaned, real
Now each system loading actual measurement and theoretical calculation related data real-time high-efficiency are shared, and data flow is as shown in Figure 4：
3) electrical network basic data standardized management.
To ensure authenticity, the validity of load measurement and theoretical calculation work, the power grid basis of a set of standardization is established
Data stewardship program is very important.
Relevant criterion management is as follows：
Substation parameters：Substation's number, power transformation station name.
Bus parameter：Busbar title, busbar voltage grade.
Line conductor parameter：Line name, circuit number, line length, wire type, section, resistivity, reactance Rate,
Susceptance rate, economic current allow maximum current, head end substation number, head end switch number, end substation number, end
Whether switch number voltage class, puts into operation.
Generator parameter：Affiliated power transformation station name, generator title, generator type (PQ, PV, balance).
Load parameter：Affiliated power transformation station name, load name, whether cross net electricity, whether lossless electricity.
Capacitor parameters：Affiliated substation, capacitor title, capacitor group switch number, rated capacity (kVar), medium
The tangent value of loss, whether computed losses, rated voltage (kV), organize number, the capacity that puts into operation, put into operation the time.
Reactor parameter：Reactor title, affiliated substation, rated capacity, rated current (kA), a phase power attenuation
(MW), a phase reactor capacity (MVar), rated voltage (kV), reactance percentage value (%), whether put into operation.
Cable data：Model, resistivity, reactance Rate, susceptance rate, section.
Distribute-electricity transformer district parameter：Distribution transforming title, affiliated circuit, model, capacity.
Transforming plant main transformer transformer nameplate parameter：Affiliated substation, title (number), transformer model, no-load current, sky
Load-loss, high-pressure side rated capacity, medium voltage side rated capacity, low-pressure side rated capacity, high-pressure side rated voltage, medium voltage side are specified
Voltage, low-pressure side rated voltage, short circuit loss be high-in, short circuit loss is high-low, short circuit loss is medium-low, short-circuit voltage it is high-in,
Short-circuit voltage is high-low, short-circuit voltage is medium-low, transformer type, gear information, current operational taps.
Three side switch parameter of transformer：Affiliated substation, high side switch number, medium voltage side switch number, low-pressure side are opened
It closes number, whether put into operation.
Switch parameter：Switch number, switch names, affiliated substation, operating status.
The meteorological condition for surveying day, using meteorological department's normal data unit.Parameter includes：Survey the date, the highest temperature,
The lowest temperature, meteorological description.
Overload criteria is set：Survey the date, transformer capacity, voltage class, maximum current, peak load, nominal load,
Load factor.
Transformer substation switch load measurement data：Power transformation station name, switch (number), actual measurement date, voltage class, switch
(electric current, active power, reactive power)：T01 (1 point value), T02 (2 point value) ... T24 (24 point value), day active energy, day nothing
Work(electricity.
Transforming plant main transformer measured data：Power transformation station name, main transformer title, voltage class, actual measurement date, type, transformation
Three side of device is to inductive switch and measured data (electric current, active power, reactive power)：T01 (1 point value), T02 (2 point value) ...,
T24 (24 point value) day active energy, day capacity of idle power.
Busbar voltage measured data：Power transformation station name, busbar title, voltage class, actual measurement the date, T01 (1 point value),
T02 (2 point value) ..., T24 (24 point value).
Circuit account data：Line name, head end substation, head end switch number, voltage class, wire type.
This system is in datagraphic acquisition, method for computing data diversity, and result of calculation is analyzed and result of calculation report
With the output facet of summary report, there is prodigious advantage.This system can directly extract data, import system from other systems
It is calculated, improves the convenience of data acquisition；In terms of distribution calculating, a variety of computational methods are provided, such as coulometry, capacity
Method, rms current method, trend exact algorithm, average current model etc. meet a variety of demands of client；It can be directed to and calculate knot
Fruit carries out line loss analyzing and drop damage aid decision, realizes transmission and distribution network idle work optimization, Substation Economic Operation, Loss Allocation, humorous
The analysis of wave negative phase-sequence, low-voltage platform area power supply position optimization, highly energy-consuming distribution transforming replacement, voltage optimization suggestion, wire replacing, three-phase are uneven
The drops such as weighing apparatus adjustment damage decision-making function；Different result of calculation reports, such as daily sheet, the moon can be selected according to the demand of client
Report etc., and report can be generated according to load measurement and the format of line loss theoretical calculation analysis report template, facilitate the later stage to fill out
Report effectively improves the accuracy and working efficiency of line loss calculation.
Claims (9)
1. the online accurate calculation system of the theory wire loss of measured data, which is characterized in that including following process：1）, it is accurate before actual measurement
Standby process；2）, data survey process；3）, data preparation process；4）, line loss calculation process；5）, interpretation of result.
2. the online accurate calculation system of the theory wire loss of measured data according to claim 1, it is characterised in that：Described
Preparatory process includes before actual measurement：It is selected to represent day；Account parameter is collected, network structure is drawn；Personnel arrangement calculating, training and reality
It surveys and arranges；Measuring instrument emphasis Inspection and analysis；Metering critical point measuring point is appraised and decided；The unified format of load measurement record.
3. the online accurate calculation system of the theory wire loss of measured data according to claim 1, it is characterised in that：Described
It includes artificial meter reading and automatic data logging on schedule that data, which survey process,；By meter reading supply network include 35kV and the above supply network,
6-10kV distribution networks and 380v secondary networks.
4. the online accurate calculation system of the theory wire loss of measured data according to claim 3, it is characterised in that：Described
35kV and the above supply network meter reading data include 24 hours of measuring point, power supply critical point point and load critical point point wattful powers on schedule
Rate, reactive power, active energy, capacity of idle power, voltage, electric current and whole day add up electricity or power factor (PF)；The 6-
10kV distribution network meter reading datas include feeder line outlet, small power supply point or have the whole day of the high voltage load point of corresponding measurement parameter to have
Work(electricity, capacity of idle power, electric current, voltage, public change and special change represent to copy day and see electricity on schedule within 24 hours；The 380v is low
Pressure network network meter reading data includes total power supply volume of selected typical distribution taiwan area, user's electricity sales amount, and survey is added to select when having ready conditions
The maximum load and first and last terminal voltage of several each low-voltage distribution wires of distribution.
5. the online accurate calculation system of the theory wire loss of measured data according to claim 1, it is characterised in that：Described
Data preparation process includes that circuit, transformer, capacitor, reactor, phase modifier, generator power supply point, load point and whole day are opened
The data preparation of off status.
6. the online accurate calculation system of the theory wire loss of measured data according to claim 5, it is characterised in that：Described
Circuit arrange data include first and last end node, voltage class, length, model, electric parameter and represent at 24 hours day on schedule voltage,
Electric current, active power, reactive power, active energy, capacity of idle power and whole day, whole month electricity；The transformer arranges number
According to including power transformation station name, number, each side bus on-off state, rated capacity, rated voltage, short-circuit voltage, short circuit loss, zero load
Electric current, no-load loss, the variation of 24 operational taps and represent 24 hours days positive constant voltage, electric current, active power, reactive power,
Active energy, capacity of idle power and whole day, whole month electricity；The capacitor arrange data include place node, rated voltage,
Capacitor, which puts into operation, capacity and to put into operation time, dielectric loss constant；The arrangement data of the reactor include place node, specified
Voltage, rated current, percentage reactance, single-phase nominal loss；The arrangement data of the phase modifier include place node name, auxiliary
Machine makes a copy of electricity；The generator power supply point arranges node name, node type, node-classification, Quan Tiji where data packet includes
Whole month electricity, 24 hours active power, reactive power, electric current and voltage on schedule；The load point data preparation includes：Institute
Node name, node type, node-classification, entirety and whole month electricity, 24 hours on schedule active power, reactive power, electric current and
Voltage.
7. the online accurate calculation system of the theory wire loss of measured data according to claim 1, it is characterised in that：Described
Line loss calculation process, it is desirable that computer personnel, computer and related software are in place；It specifically includes data inputting, represent day meter
It calculates, data output and drop damage are analyzed.
8. the online accurate calculation system of the theory wire loss of measured data according to claim 7, it is characterised in that：Described
Data input includes figure or table input, automatic data collection format conversion, data error detection, Network topology；Represent day
Calculate includes forming line loss calculation data and trend line loss calculation；The data output includes structural parameters and operating parameter system
Meter table, original paper loss detail list, subelement, component voltage grade attrition table, result summarize and report；The drop damages analysis procedure
Including the network rebuilding, changes of operating modes, operating parameter variation, line and again damage change analysis, rate of load condensate distribution are damaged again.
9. the online accurate calculation system of the theory wire loss of measured data according to claim 1, it is characterised in that：Described
Interpretation of result process includes the reasonability with analysis result compared with statistical value or empirical value；Specially：A, measured data
Reasonability and input data Correctness checking, check for repeatedly inputting and compute repeatedly；B, it whether there is and calculate data
It is incomplete and use rough conversion data, including reactive power is converted by average power factor；C, output, load and regulation side
To the net electricity excessively that can reversely cause process electricity to increase emptily；D, network reduction is analyzed；E, other do not count loss, including meter damage
Consumption, low pressure network loss；F, Macro or mass analysis, drop damage comparative analysis, there are problems and suggested measures.
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| CN111047189A (en) * | 2019-12-12 | 2020-04-21 | 云南电网有限责任公司丽江供电局 | Loss reduction comprehensive application system and analysis method based on cloud power intelligent cloud platform |
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| CN111478311A (en) * | 2019-01-23 | 2020-07-31 | 国网甘肃省电力公司电力科学研究院 | Line loss calculation method and system for any partition of power grid |
| CN110658405B (en) * | 2019-10-09 | 2021-09-28 | 广东美的制冷设备有限公司 | Air conditioner line loss detection method and device, air conditioner and storage medium |
| CN110658405A (en) * | 2019-10-09 | 2020-01-07 | 广东美的制冷设备有限公司 | Air conditioner line loss detection method and device, air conditioner and storage medium |
| CN111047189A (en) * | 2019-12-12 | 2020-04-21 | 云南电网有限责任公司丽江供电局 | Loss reduction comprehensive application system and analysis method based on cloud power intelligent cloud platform |
| CN111080450A (en) * | 2019-12-12 | 2020-04-28 | 国网辽宁省电力有限公司经济技术研究院 | Transaction mode evaluation method based on multi-region interconnected power system |
| CN111047189B (en) * | 2019-12-12 | 2023-08-01 | 云南电网有限责任公司丽江供电局 | Loss reduction comprehensive application system and analysis method based on cloud electricity intelligent cloud platform |
| CN111191912A (en) * | 2019-12-26 | 2020-05-22 | 深圳供电局有限公司 | Light-load line identification method and device, computer equipment and storage medium |
| CN111191912B (en) * | 2019-12-26 | 2022-09-02 | 深圳供电局有限公司 | Light-load line identification method and device, computer equipment and storage medium |
| CN112163248A (en) * | 2020-10-12 | 2021-01-01 | 重庆大学 | Rule-based process resource environmental load data normalization method |
| CN112288271A (en) * | 2020-10-29 | 2021-01-29 | 内蒙古电力(集团)有限责任公司包头供电局 | Public transformer area low pressure line loss analysis system |
| CN113030611A (en) * | 2021-02-25 | 2021-06-25 | 安徽新力电业科技咨询有限责任公司 | Line loss information planning system based on actual measurement information |
| CN113376566A (en) * | 2021-06-16 | 2021-09-10 | 国网福建省电力有限公司营销服务中心 | Online monitoring method for metering misalignment of whole network |
| CN113376566B (en) * | 2021-06-16 | 2024-03-12 | 国网福建省电力有限公司营销服务中心 | Online monitoring method for whole-network metering misalignment |
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