CN108512221B - A kind of loss computing method containing distributed generation resource and net platform region - Google Patents
A kind of loss computing method containing distributed generation resource and net platform region 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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Abstract
A kind of loss computing method containing distributed generation resource and net platform region, the method is first collected and the loss calculation data of net platform region, distributed generation resource is handled using equivalent load method, the place phase situation of form and access power grid further according to platform area load access power grid calculates every line segment A, B, the power load of C phase line power transmission, then the tri-phase unbalance factor and neutral conductor loss correction coefficient of every line segment are calculated, the equivalent impedance to head end is converted in impedance, consider the whole network equivalent impedance of loss correction coefficient, then pass through platform area distributed generation resource power output and load power output shape related coefficient computed losses shape correlation coefficients, and calculate the form factor of platform area load, the electric energy loss of area's power grid must finally be put into effect.The design realizes the accurate calculating of the platform area grid loss situation containing distributed generation resource.
Description
Technical field
The invention belongs to field of distribution network, and in particular to a kind of loss computing method containing distributed generation resource and net platform region.
Background technique
As China's new energy in recent years is grown rapidly, and the implementation of national " photovoltaic poverty alleviation " policy, in a distributed manner photovoltaic,
Wind-powered electricity generation etc. is that the grid-connected scale of new energy distributed generation resource of representative is continuously increased.Due to the shape of distributed generation resource access platform area power grid
There are diversity for formula, and its power output has strong randomness, will lead to platform area electric network swim flow direction and change over time, change tradition
The characteristics of distribution power flow one-way flow.The area existing professional standard Zhong Tai power grid electric energy loss theoretical calculation method is difficult to adapt to
The calculating requirement of large-scale distributed plant-grid connection.
On the other hand, energy-saving and emission-reduction are the Xiang Guoce adhered to for a long time in China's using energy source process.How effectively to comment
Estimate power grid electric energy loss, is the precondition for carrying out electric system saving energy and decreasing loss.Currently, China's platform area power grid has line resistance
Parameter is big, and the feature that overlay area is wide, power supply line's total kilometrage is long, is the chief component of China's grid loss.Platform simultaneously
Area's power grid and user's direct interface, some areas seriously destroy the sound development of power industry there are user's stealing electricity behavior.Such as
How the power grid electric energy loss of platform area is effectively calculated, power grid enterprises can not only be instructed to carry out decreasing loss work, while can also be to beat
It hits electric power crime and help is provided, be conducive to ensure the economical and efficient of power distribution network, high-quality health operation.
Currently, it mainly includes loss of voltage rate method, substitutional resistance method and the loss of platform area that the power grid electric energy loss of platform area, which calculates,
Rate method." power network line losses calculating directive/guide " (DL/T 686-1999) is detailed to describe loss of voltage rate method, substitutional resistance
Method and platform area loss ratio method calculate the specific implementation flow of platform area power grid electric energy loss, do not contain distributed new to tradition
And the electric energy loss of net platform region power grid has good directive significance, however it is not suitable with the platform grid-connected with distributed new
Area, and can not consider that platform area three-phase imbalance bring influences.Chinese patent application publication No. is CN107069718A, application is public
Cloth day is that the patent of invention on the 18th of August in 2017 discloses a kind of low-voltage distribution influenced based on three-phase imbalance on line loss
Net loss computing method, this method correct loss calculation using unbalance factor only according to route head end three-phase current
As a result, its assumed condition is that mutually tri-phase unbalance factor is identical, and distributed electrical to each part of path of entire platform area power grid in the same time
The access in source can influence as follows on generating: 1) distributed generation resource uses single-phase access way, so that certain part of paths in platform area
Tri-phase unbalance factor increases, and the tri-phase unbalance factor of these part of paths and head end route difference are big；2) distributed generation resource is contributed
Form factor and load between form factor have notable difference, conventional table area loss calculation due in platform area only have load
In the presence of, it can be assumed that platform area internal loading form factor is consistent.Therefore, which is invalid for actual electric network
, need to study the loss computing method containing distributed generation resource and net platform region.
Summary of the invention
To overcome the problems, such as that existing calculation method can not be suitable for containing distributed generation resource and net platform region, the present invention is provided
A kind of loss computing method containing distributed generation resource and net platform region that can accurately calculate platform area grid loss situation.
In order to achieve the above object, technical scheme is as follows:
It is a kind of containing distributed generation resource and the loss computing method of net platform region referring to Fig. 1, successively the following steps are included:
Step A, the loss calculation data for containing L distributed generation resource, N number of load and net platform region are collected, wherein for containing
The grid-connected platform area of distributed generation resource handles distributed generation resource using equivalent load method；
Step B, the form of power grid is accessed according to platform area load and accesses the place phase situation of power grid, using following formula
Calculate the power load A for passing through j-th strip line segment A phase line power transmissionLaj, pass through the power load of j-th strip line segment B phase line power transmission
ALbjAnd the power load A by j-th strip line segment C phase line power transmissionLcj:
In above formula, ALmFor meet condition m load electricity, ALRsFor meet condition s distributed generation resource equivalent load
Electricity, LajFor the load aggregation by the power supply of j-th strip line segment A phase line, RajFor point by j-th strip line segment A phase line power transmission
The equivalent load set of cloth power supply, LbjFor the load aggregation by the power supply of j-th strip line segment B phase line, RbjFor by j-th strip
The equivalent load set of the distributed generation resource of line segment B phase line power transmission, LcjFor the load by the power supply of j-th strip line segment C phase line
Set, RcjFor the equivalent load set of the distributed generation resource Jing Guo j-th strip line segment C phase line power transmission；
Step C, the tri-phase unbalance factor and neutral conductor loss correction coefficient of j-th strip route are calculated separately according to the following formula
K3uj, j-th strip line impedance conversion to head end equivalent impedance Rej, consider loss correction coefficient the whole network equivalent impedance Re:
In above formula, RjFor the impedance of j-th strip route, ∑ ALTo include all loads including distributed generation resource equivalent load
The sum of electricity, J is the number of segment of route in platform area power grid；
Step D, force data computed losses shape correlation coefficients K is gone out by distributed generation resource power output and platform area head end loadR；
Step E, the form factor k of platform area load is calculated according to the electric current of 24 hours integral point moment platform area loads:
In above formula, ILiFor the load reset i hours electric current in platform area；
Step F, the electric energy loss Δ A of platform area power grid is calculated according to the following formula:
In above formula, D is the desk calendar number of days of this month, Δ AdbhElectric energy, m to be lost by the moon of h class gauge table in platform areahFor h
Class gauge table number, ∑ Δ ACFor the loss electric energy of reactive-load compensation equipment in platform area power grid, AP、AQRespectively platform area head end 24 is small
When total active energy, total capacity of idle power, U is head end voltage of courts, the T=24 when being calculated by the way of representing day.
The step D is calculated by using the following formula loss shape correlation coefficients KR:
KR=f (x)
ILi=Ii+IRi
In above formula, x is platform area distributed generation resource power output and load power output shape related coefficient, IiIt is small for platform area head end i-th
When electric current, IRiFor i-th hour input current of distributed generation resource, PRiFor always having for i-th hour all distributed generation resource in platform area
Function power.
It is described to be referred to using equivalent load method processing distributed generation resource by the active electricity of first of distributed generation resource in step A
Measure ARlIt is converted into the equivalent load electricity A being negativeLRl:
ALRl=-ARl
In above formula, l=1,2...L, L are the number of platform area distributed generation resource.
Compared with prior art, the invention has the benefit that
A kind of loss computing method containing distributed generation resource and net platform region of the present invention first uses the processing distribution of equivalent load method
Formula power supply, the place phase situation of form and access power grid further according to platform area load access power grid, using sectionalized line injustice
On the one hand influence of the weighing apparatus degree correction process three-phase imbalance to loss calculation can be calculated effectively containing distributed generation resource and net platform region
Loss, suitable for loss calculation containing distributed generation resource and net platform region, on the other hand, with platform area power grid split-phase Load flow calculation
Method compare, the data that this method not only needs to acquire are relatively fewer, convenience of calculation, easy to implement, and can count and platform
The influence of area's power grid three-phase imbalance and new energy, the accurate loss electric energy calculated containing distributed new and net platform region, is protected
The accuracy that the area Zheng Liaotai grid loss calculates, provides basis for power grid energy-saving and emission-reduction.Therefore, the present invention is realized containing distribution
The accurate calculating of the platform area grid loss situation of power supply.
Detailed description of the invention
Fig. 1 is flow chart of the invention.
Fig. 2 is platform area power grid electrical schematics grid-connected containing distributed generation resource in the embodiment of the present invention 1.
Specific embodiment
The present invention will be further described in detail with reference to the specific embodiments.
It is a kind of containing distributed generation resource and the loss computing method of net platform region referring to Fig. 1, successively the following steps are included:
Step A, the loss calculation data for containing L distributed generation resource, N number of load and net platform region are collected, wherein for containing
The grid-connected platform area of distributed generation resource handles distributed generation resource using equivalent load method；
Step B, the form of power grid is accessed according to platform area load and accesses the place phase situation of power grid, using following formula
Calculate the power load A for passing through j-th strip line segment A phase line power transmissionLaj, pass through the power load of j-th strip line segment B phase line power transmission
ALbjAnd the power load A by j-th strip line segment C phase line power transmissionLcj:
In above formula, ALmFor meet condition m load electricity, ALRsFor meet condition s distributed generation resource equivalent load
Electricity, LajFor the load aggregation by the power supply of j-th strip line segment A phase line, RajFor point by j-th strip line segment A phase line power transmission
The equivalent load set of cloth power supply, LbjFor the load aggregation by the power supply of j-th strip line segment B phase line, RbjFor by j-th strip
The equivalent load set of the distributed generation resource of line segment B phase line power transmission, LcjFor the load by the power supply of j-th strip line segment C phase line
Set, RcjFor the equivalent load set of the distributed generation resource Jing Guo j-th strip line segment C phase line power transmission；
Step C, the tri-phase unbalance factor and neutral conductor loss correction coefficient of j-th strip route are calculated separately according to the following formula
K3uj, j-th strip line impedance conversion to head end equivalent impedance Rej, consider loss correction coefficient the whole network equivalent impedance Re:
In above formula, RjFor the impedance of j-th strip route, ∑ ALTo include all loads including distributed generation resource equivalent load
The sum of electricity, J is the number of segment of route in platform area power grid；
Step D, force data computed losses shape correlation coefficients K is gone out by distributed generation resource power output and platform area head end loadR；
Step E, the form factor k of platform area load is calculated according to the electric current of 24 hours integral point moment platform area loads:
In above formula, ILiFor the load reset i hours electric current in platform area；
Step F, the electric energy loss Δ A of platform area power grid is calculated according to the following formula:
In above formula, D is the desk calendar number of days of this month, Δ AdbhElectric energy, m to be lost by the moon of h class gauge table in platform areahFor h
Class gauge table number, ∑ Δ ACFor the loss electric energy of reactive-load compensation equipment in platform area power grid, AP、AQRespectively platform area head end 24 is small
When total active energy, total capacity of idle power, U is head end voltage of courts, the T=24 when being calculated by the way of representing day.
The step D is calculated by using the following formula loss shape correlation coefficients KR:
KR=f (x)
ILi=Ii+IRi
In above formula, x is platform area distributed generation resource power output and load power output shape related coefficient, IiIt is small for platform area head end i-th
When electric current, IRiFor i-th hour input current of distributed generation resource, PRiFor always having for i-th hour all distributed generation resource in platform area
Function power.
It is described to be referred to using equivalent load method processing distributed generation resource by the active electricity of first of distributed generation resource in step A
Measure ARlIt is converted into the equivalent load electricity A being negativeLRl:
ALRl=-ARl
In above formula, l=1,2...L, L are the number of platform area distributed generation resource.
The principle of the present invention is described as follows:
Platform area power grid: refer generally to the 0.38kV power grid below 10kV distribution transformer with independent grid structure.
Three-phase imbalance: power grid is powered by A phase, B phase, C phase, if A phase, B phase, C phase three-phase load size of current is the same,
It is considered as its three-phase imbalance, is characterized using tri-phase unbalance factor.General tri-phase unbalance factor is A phase, B phase, C phase electric current
Maximum value and the difference of its average value account for the percentage of its average value.
For the load by phase three-wire three or three-phase four-wire power supply, A phase, B phase, C phase load is total load
1/3, for the load of single-phase access A phase line, A phase load is its total load, for the negative of single-phase access B phase line
Lotus, B phase load are its total load, and for the load of single-phase access C phase line, C phase load is its total load, for single-phase
The load of B phase or C phase line is accessed, A phase load is zero, for the load of single-phase access A phase or C phase line, B phase load
It is zero, for the load of single-phase access A phase or B phase line, C phase load is zero.
Embodiment 1:
A kind of loss computing method containing distributed generation resource and net platform region, using shown in Fig. 2 area's power grid as object:
Step 1 collects above-mentioned and net platform region loss calculation data, wherein and this area power grid has 12 nodes, and two
Distributed solar energy power supply is respectively connected to node 3 and node 7, and each branch and load power generation data are as shown in table 1 in system, point
Cloth power supply is powered 260kWh in 24 hours, platform area load 24 hours total electricity consumption 935kWh, head end voltage of courts 380V, platform area
24 hours electric currents of head end are as shown in table 2, and the total active energy in 24 hours of platform area head end is 740kWh, total capacity of idle power is
188kvarh, the loss electric energy of reactive-load compensation equipment is 0kWh in platform area power grid.Gauge table only has a kind in platform area, and quantity 4,
Every gauge table monthly loss of electricity 1.5kWh is calculated moon desk calendar number of days 30 days.24 hours all distributions in integral point moment platform area
The total active power of power supply is as shown in table 3, and platform area distributed generation resource power output and load power output shape related coefficient x are repaired with loss shape
Positive coefficient KRBetween functional relation KR=f (x)=e0.8x-0.8(1.5-0.5x)3；
1 area's electrical network parameter table of table
Table 2 and net platform region head end electric current table (unit: A)
| Moment | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Electric current | 83.6 | 84.7 | 84.4 | 82.6 | 81.7 | 83.9 | 76.5 | 73.2 |
| Moment | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| Electric current | 59.5 | 47.9 | 41.9 | 25.9 | 27.2 | 39.4 | 51.8 | 73.4 |
| Moment | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
| Electric current | 84.8 | 108.5 | 105.5 | 127.8 | 139.6 | 109.8 | 93.9 | 84.6 |
Grid-connected area's distributed generation resource active power (unit: kW) of 3 integral point moment of table
Step 2, for the platform area grid-connected containing distributed generation resource, by the active energy A of first of distributed generation resourceRlConversion
As negative equivalent load electricity ALRl:
ALRl=-ARl
In above formula, l=1,2...L, L are the number of platform area distributed generation resource；
Node 3 and node 7 have been respectively connected to distributed solar energy power supply, and new-energy grid-connected active energy is converted into being negative
Equivalent load electricity.The equivalent load electricity of node 3 is ALR3=-200kWh, the equivalent load electricity of node 7 are ALR7=-
The equivalent load electricity of 60kWh, other nodes are 0；
Step 3 accesses the form of power grid according to platform area load and accesses the place phase situation of power grid, using following formula
Calculate the power load A for passing through j-th strip line segment A phase line power transmissionLaj, pass through the power load of j-th strip line segment B phase line power transmission
ALbjAnd the power load A by j-th strip line segment C phase line power transmissionLcj:
In above formula, ALmFor meet condition m load electricity, ALRsFor meet condition s distributed generation resource equivalent load
Electricity, LajFor the load aggregation by the power supply of j-th strip line segment A phase line, RajFor point by j-th strip line segment A phase line power transmission
The equivalent load set of cloth power supply, LbjFor the load aggregation by the power supply of j-th strip line segment B phase line, RbjFor by j-th strip
The equivalent load set of the distributed generation resource of line segment B phase line power transmission, LcjFor the load by the power supply of j-th strip line segment C phase line
Set, RcjFor the equivalent load set of the distributed generation resource Jing Guo j-th strip line segment C phase line power transmission；
Calculated result is as shown in table 4:
A, B, C phase load situation table (unit: kWh) of the table 4 Jing Guo each part of path power transmission
Step 4, the tri-phase unbalance factor and neutral conductor loss correction COEFFICIENT K for calculating j-th strip route according to the following formula3uj:
It the results are shown in Table 5:
The loss correction coefficient table of each part of path of table 5
| Node i | Node j | Loss correction coefficient | Node i | Node j | Loss correction coefficient |
| 0 | 1 | 1.027 | 1 | 12 | 6.000 |
| 1 | 2 | 1.150 | 2 | 13 | 6.000 |
| 2 | 3 | 1.058 | 3 | 14 | 1.000 |
| 3 | 4 | 1.029 | 4 | 15 | 6.000 |
| 4 | 5 | 1.146 | 5 | 16 | 6.000 |
| 5 | 6 | 1.107 | 6 | 17 | 6.000 |
| 6 | 7 | 1.008 | 7 | 18 | 6.000 |
| 7 | 8 | 1.048 | 8 | 19 | 6.000 |
| 8 | 9 | 1.190 | 9 | 20 | 1.000 |
| 9 | 10 | 2.790 | 10 | 21 | 6.000 |
| 10 | 11 | 6.000 | 11 | 22 | 6.000 |
Step 5, calculating j-th strip line impedance converts the equivalent impedance R to head end according to the following formulaej:
In above formula, RjFor the impedance of j-th strip route, ∑ ALTo include all loads including distributed generation resource equivalent load
The sum of electricity；
As a result referring to table 6:
The equivalent impedance table to head end is converted in each part of path impedance of table 6
| Node i | Node j | Equivalent impedance (ohm/1000) | Node i | Node j | Equivalent impedance (ohm/1000) |
| 0 | 1 | 64.00000 | 1 | 12 | 0.263374 |
| 1 | 2 | 41.75364 | 2 | 13 | 0.213333 |
| 2 | 3 | 20.77075 | 3 | 14 | 0.350464 |
| 3 | 4 | 29.67309 | 4 | 15 | 0.094815 |
| 4 | 5 | 41.27407 | 5 | 16 | 0.263374 |
| 5 | 6 | 22.7786 | 6 | 17 | 0.16856 |
| 6 | 7 | 20.15671 | 7 | 18 | 0.094815 |
| 7 | 8 | 12.89942 | 8 | 19 | 0.094815 |
| 8 | 9 | 16.55045 | 9 | 20 | 0.790123 |
| 9 | 10 | 2.317037 | 10 | 21 | 0.053333 |
| 10 | 11 | 3.423868 | 11 | 22 | 0.263374 |
Step 6 calculates the whole network equivalent impedance R for considering loss correction coefficient according to the following formulaeFor 0.27999 Ω:
In above formula, J is the number of segment of route in platform area power grid；
Step 7 goes out force data calculating platform area distributed generation resource power output by distributed generation resource power output and platform area head end load
It is 0.482 with load power output shape related coefficient x, loss shape correlation coefficients KRIt is 1.319:
KR=f (x)
ILi=Ii+IRi
In above formula, IiFor platform area i-th hour electric current of head end, IRiFor i-th hour input current of distributed generation resource, PRiFor
Total active power of i-th hour all distributed generation resource in platform area；
Step 8, to calculate the form factor k of platform area load according to the electric current of 24 hours integral point moment platform area loads be 1.014:
In above formula, ILiFor the load reset i hours electric current in platform area；
Step 9, the electric energy loss Δ A for calculating platform area power grid according to the following formula are 63.72kWh, and wherein gauge table is lost
0.2kWh:
In above formula, D is the desk calendar number of days of this month, Δ AdbhElectric energy, m to be lost by the moon of h class gauge table in platform areahFor h
Class gauge table number, ∑ Δ ACFor the loss electric energy of reactive-load compensation equipment in platform area power grid, AP、AQRespectively platform area head end 24 is small
When total active energy, total capacity of idle power, U is head end voltage of courts, the T=24 when being calculated by the way of representing day.
From the point of view of the line loss of statistics, the total active energy in 24 hours of platform area head end be 740kWh, distributed generation resource 24 hours
Interior power supply 260kWh, 24 hours total electricity consumption 935kWh of platform area load, total power supply volume subtract the total electricity consumption of load and obtain platform
The statistics loss of electricity in area is 65kWh, and the theory wire loss value being calculated with the present embodiment is very close, and the two error is smaller.
It can be seen that calculation method of the present invention has good calculating accuracy.
Claims (2)
1. a kind of loss computing method containing distributed generation resource and net platform region, it is characterised in that:
The method successively the following steps are included:
Step A, the loss calculation data for containing L distributed generation resource, N number of load and net platform region are collected, wherein be distributed for containing
The platform area of formula power grid handles distributed generation resource using equivalent load method；
Step B, the form of power grid is accessed according to platform area load and accesses the place phase situation of power grid, be calculated using the following equation
Pass through the power load A of j-th strip line segment A phase line power transmissionLaj, pass through the power load A of j-th strip line segment B phase line power transmissionLbjWith
And the power load A by j-th strip line segment C phase line power transmissionLcj:
In above formula, ALmFor meet condition m load electricity, ALRsIt is charged for the equivalent negative that meets the distributed generation resource of condition s
Amount, LajFor the load aggregation by the power supply of j-th strip line segment A phase line, RajFor the distribution Jing Guo j-th strip line segment A phase line power transmission
The equivalent load set of formula power supply, LbjFor the load aggregation by the power supply of j-th strip line segment B phase line, RbjTo pass through j-th strip line
The equivalent load set of the distributed generation resource of section B phase line power transmission, LcjFor the load collection by the power supply of j-th strip line segment C phase line
It closes, RcjFor the equivalent load set of the distributed generation resource Jing Guo j-th strip line segment C phase line power transmission；
Step C, the tri-phase unbalance factor and neutral conductor loss correction COEFFICIENT K of j-th strip route are calculated separately according to the following formula3uj、
J-th strip line impedance converts the equivalent impedance R to head endej, consider loss correction coefficient the whole network equivalent impedance Re:
In above formula, RjFor the impedance of j-th strip route, ∑ ALFor the electricity comprising all loads including distributed generation resource equivalent load
The sum of amount, J are the number of segment of route in platform area power grid；
Step D, by distributed generation resource power output and platform area head end load go out force data, be calculated using the following equation loss shape repair
Positive coefficient KR:
KR=f (x)
ILi=Ii+IRi
In above formula, x is platform area distributed generation resource power output and load power output shape related coefficient, IiFor platform area i-th hour electricity of head end
Stream, IRiFor i-th hour input current of distributed generation resource, PRiFor total wattful power of i-th hour all distributed generation resource in platform area
Rate；
Step E, the form factor k of platform area load is calculated according to the electric current of 24 hours integral point moment platform area loads:
In above formula, ILiFor the load reset i hours electric current in platform area；
Step F, the electric energy loss Δ A of platform area power grid is calculated according to the following formula:
In above formula, D is the desk calendar number of days of this month, Δ AdbhElectric energy, m to be lost by the moon of h class gauge table in platform areahFor h class meter
Scale number, ∑ Δ ACFor the loss electric energy of reactive-load compensation equipment in platform area power grid, AP、AQRespectively platform area head end 24 hours
Total active energy, total capacity of idle power, U is head end voltage of courts, the T=24 when being calculated by the way of representing day.
2. a kind of loss computing method containing distributed generation resource and net platform region according to claim 1, it is characterised in that:
It is described to be referred to using equivalent load method processing distributed generation resource by the active energy A of first of distributed generation resource in step ARl
It is converted into the equivalent load electricity A being negativeLRl:
ALRl=-ARl
In above formula, l=1,2...L, L are the number of platform area distributed generation resource.
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| CN112039076B (en) * | 2020-05-21 | 2022-04-15 | 国网电力科学研究院有限公司 | Power distribution network load flow dynamic equivalence method and system integrating distributed power sources and loads |
| CN111817351B (en) * | 2020-08-06 | 2022-02-11 | 中国人民解放军国防科技大学 | Method and system for reducing loss during grid connection of distributed energy |
| CN113507108A (en) * | 2021-06-08 | 2021-10-15 | 西安理工大学 | Power distribution network line loss estimation method based on region division |
| CN116384212B (en) * | 2022-12-16 | 2023-12-05 | 国网江苏省电力有限公司电力科学研究院 | Collaborative loss reduction method for DG-containing area, computer equipment and storage medium |
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| CN103036233B (en) * | 2012-12-17 | 2015-04-08 | 中国农业大学 | Power auxiliary analyzing method and system containing distributed type power generation and distribution network |
| CN103617357A (en) * | 2013-11-30 | 2014-03-05 | 国网河南省电力公司南阳供电公司 | Public transformer district low-voltage line loss analysis system and using method thereof |
| CN105117986A (en) * | 2015-09-25 | 2015-12-02 | 国网湖北节能服务有限公司 | Low voltage network line loss calculating method considering the imbalance degree |
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2018
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