CN101958545A - Sensitivity-based loss allocation method - Google Patents
Sensitivity-based loss allocation method Download PDFInfo
- Publication number
- CN101958545A CN101958545A CN 201010266102 CN201010266102A CN101958545A CN 101958545 A CN101958545 A CN 101958545A CN 201010266102 CN201010266102 CN 201010266102 CN 201010266102 A CN201010266102 A CN 201010266102A CN 101958545 A CN101958545 A CN 101958545A
- Authority
- CN
- China
- Prior art keywords
- loss
- network
- network loss
- calculation
- sensitivity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention provides a sensitivity-based loss allocation method. The method mainly comprises the following steps of: firstly, selecting a run mode of a system, determining load level, performing load flow calculation, and regionally dividing an entire network according to a load flow section to determine a boundary condition; secondly, determining the principle of the loss allocation, and performing load flow calculation and loss calculation under the conditions of entire network or removing a certain region respectively to further obtain the coefficient representing the ratio of the loss of each region to the total loss; and finally, allocating the total loss according to the loss proportion of each region. The method fully shows the marketing principle of openness, fairness and justness on the premise of ensuring stable running of a power system and maintains the economic benefit of each market participant and is easy to be understood and accepted by the market participant; meanwhile, the complexity of the calculation needs to be considered.
Description
Technical field
The network loss that the present invention relates in the trans-regional transmission of electricity process is transprovincially shared problem, relates in particular to a kind of network loss methodology based on sensitivity.
Background technology
Along with the carrying out of power market reform, not only need to be concerned about the size of network loss, need be concerned about the attaching problem of network loss more.The power transmission network loss share the economic interests that are related to each participant of electricity market, just for number one and market, how sharing network loss liberally will become key issue in the electricity market.The fairness of scheme and reasonability are related to market member's enthusiasm, are related to the healthy and sustainable development in market.
Good pool schemes should be able to satisfy following requirement:
(1) fair and reasonable.Principle is " whom who uses pay, and what what pay with ", should not have mutual subsidy situation;
(2) calculate simply.Must be easy to calculate, and amount of calculation is little, to satisfy the requirement of using in real time;
(3) transparent procedures.The whole process of sharing is wanted easy to understand, is easy to the user and accepts easy operating;
(4) balance between revenue and expenditure.The total transmit power expense of being collected is the total cost that equals to pay transmission line;
(5) economic signals.Provide suitable economic signals to use with the economy of guiding transmission of electricity resource to the market member.
Existing network loss methodology mainly contains: average network loss methodology, trend tracing etc.Average network loss methodology is actually a kind of " postage stamp method ", this method is not considered the structure of power transmission network, the distance of transmission line and the transmitting-receiving point position of transmission power, in network-wide basis, distribute by identical network loss coefficient, but this methodology can not provide the economics signal of electrical network short-term and long-term economic operation, lacks the economic incentives mechanism of strong electricity market.It is a kind of topology analyzing method that trend is followed the tracks of methodology actual, and it shares principle according to ratio, distributes trend between each branch road, determines the network loss that each user should share on this basis, and in complex electric network, this method amount of calculation is very big.
Summary of the invention
Defective and not enough problem at above-mentioned existing method, the objective of the invention is to propose a kind of network loss methodology based on sensitivity, it is under the prerequisite of the stable operation that guarantees electric power system, demonstrate fully open, fair and impartial market principle, safeguard each participant in the market's economic interests, be easy to be understood by the market member and accept; Need simultaneously to consider the complexity calculated again.
In order to achieve the above object, the present invention by the following technical solutions, promptly a kind of network loss methodology based on sensitivity, its key step is as follows:
At first, the operational mode of selective system is determined load level, carries out trend and calculates.According to the trend section the whole network is carried out area dividing, determine boundary condition.
Secondly, determine the principle that network loss is shared.Then, carry out the whole network respectively and remove trend under a certain regional situation and loss is calculated, further obtain the proportionality coefficient that each regional network loss accounts for total network loss.
At last, according to each regional network loss ratio total network loss is shared.
The present invention is interregional when carrying out exchange of electric power, calculates because the exchange kwh loss increment that electric weight brought, and shares, and do not need special-purpose program and the special data of preparing, and this method is simple, practical, can provide quantitative reference for electricity transaction.In addition, the present invention also can be used for calculating large-scale power supply and sends the loss increase of dissolving and bringing to electrical network with large user's electric power, and goes out the network loss allocation way that power supply is sent the interests each side that dissolves with electric power as Reference Design.
Description of drawings
Fig. 1 is that the 500kV electric power system is sent and concerned schematic diagram.
Embodiment
The present invention is based on the network loss methodology that the inventor proposes based on sensitivity.Because this method can obtain certain zone generating or load power easily when adjusting to the influence of interconnection and whole system network loss, carry out network loss when sharing with it, clear concept is convenient to participate in sharing each side and is understood, and the economics signal of long-term economic operation can also be provided simultaneously.Results of calculation shows that this method computational speed is fast, and the result is short and sweet, and the network loss of declare area electrical network that can be quantitative is shared situation.
Concrete calculation procedure based on the network loss methodology of sensitivity is as follows:
1, according to selected system operation mode, carry out trend and calculate, determine the boundary condition of subregion, certainly, way to manage not simultaneously, load level and boundary condition are adjustable.
2, at first carry out calculating of the whole network trend and loss and calculate, draw total amount of power supply P of the whole network
AlwaysWith total network loss Δ P
Always
3, secondly,, send outside on the basis of power or load power (as regional A) removing this zone, carry out that trend is calculated and loss calculating, draw total amount of power supply P of the whole network for each zone
Always-AWith total network loss Δ P
Always-A, the proportionality coefficient that so regional A network loss accounts for the total network loss of whole network can calculate like this:
f
A=K (Δ P
Always-Δ P
Always-A)/Δ P
Always(1)
Wherein, K is a correction factor,
In like manner get the network loss ratio f of other province
N, N=A, B ..., D (numbering of representing each zone respectively)
4, last, in each regional network loss ratio f
NTotal network loss P to whole network
Always, that is:
The line loss that zone A shares:
Δ P
Always-A=f
AΔ P
Always(3)
Line loss rate is:
f
AΔ P
Always/ P
A* 100%
And the like, can obtain the network loss of sharing and the line loss rate thereof in each zone of whole network.
Here adopt a 500kV electric power system that can be divided into A, B, C, four zones of D to be illustrated as example.At first,, carry out trend and calculate, determine interregional Power Exchange level, i.e. boundary condition according to selected operational mode.As shown in Figure 1: area B is carried active power 1054.5MW to regional A, carries 395.6MW to region D; Zone C is to area B transmission power 68MW; In addition, whole system is also by area B transmission power outside system.
Keep boundary condition constant, whole system is carried out trend calculate, the result is as shown in table 1 below:
The calculation of tidal current of table 1 500kV system
According to the result of calculation in the table 1, can obtain the electric power of not considering as shown in table 2 and be sent the loss of relation to share the result, promptly, to bear by this zone according to the loss in the zone, the loss on the interconnection is by shared equally by electricity and feeding section.Because such allocation way do not consider the relation of being sent, make that the loss of sending electricity side to bear is bigger than normal, can't embody justice, rational network loss is shared the fish principle.Therefore need further to adjust according to the proposed method sharing of loss.
The result is shared in table 2 500kV system loss
(not considering to be sent relation) MW
Regional as can be seen from Figure 1 A, D, send outside the part for being subjected to electricity side, zone C is for sending electricity side, area B is subjected to the electricity of zone C, the while give to regional A, D.Bear the principle of loss according to load, the loss that area B should distribution area C, and regional A, D and send the loss that load should part distribution area B outside.
The load that removes regional A, B, C, D respectively and send outside carries out trend then and calculates, total amount of power supply P of statistics the whole network
Always-NWith total Δ P
Always-NN=A, B ..., E (numbering of representing each zone respectively, E is for sending part outside).Through after adjusting, network loss to share the result as follows:
Table 3 500kV system losses are shared the result
(relation is sent in consideration) MW
As can be seen from Table 3, bear the principle that loss, marginal loss are shared by load, loss amortization ratio and load proportion differ far away, but by analyzing in conjunction with the electrical network actual conditions, can see that such result has its reasonability.
1, sending the part of loading outside is to carry by the mode of high voltage direct current transmission, and therefore, although load proportion accounts for 41.3%, because its transmission of electricity path is short and concentrated, its loss amortization ratio is 13.1%, much smaller than load proportion, is rational.
2, regional A need use the electric power of area B, need bear the loss of area B, thus need share 43.6% of network loss, far above load proportion.
3, region D is used the electric power of area B, and according to practical operation situation, most of electric power is by a 500kV circuit under this mode, and this circuit is nearer apart from power supply, so it is less to share the loss in Hubei, its loss amortization ratio and load proportion are more or less the same.
4, a small amount of outer confession of zone C electric power, other all uses in net, and the transmission of electricity path is short, and the public line loss of sharing is less, mainly is loss own, and line loss rate is low to be rational.
In sum, the network loss methodology that the present invention proposes can satisfy network loss and share in the process: fair and reasonable, basic principles such as calculating is simple, transparent procedures.The methodology of this loss and thinking also can be used for calculating large-scale power supply and send the loss increase of dissolving and bringing to electrical network with large user's electric power, and go out the network loss allocation way that power supply is sent the interests each side that dissolves with electric power as Reference Design.
Claims (1)
1. the network loss methodology based on sensitivity is characterized in that comprising the steps:
At first, the operational mode of selective system is determined load level, carries out trend and calculates, and according to the trend section the whole network is carried out area dividing, determines boundary condition;
Secondly, determine the principle that network loss is shared, carry out the whole network then respectively and trend and the loss removed under a certain regional situation are calculated, further obtain the proportionality coefficient that each regional network loss accounts for total network loss;
At last, according to each regional network loss ratio total network loss is shared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010266102 CN101958545A (en) | 2010-08-27 | 2010-08-27 | Sensitivity-based loss allocation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010266102 CN101958545A (en) | 2010-08-27 | 2010-08-27 | Sensitivity-based loss allocation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101958545A true CN101958545A (en) | 2011-01-26 |
Family
ID=43485729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010266102 Pending CN101958545A (en) | 2010-08-27 | 2010-08-27 | Sensitivity-based loss allocation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101958545A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522744A (en) * | 2011-12-01 | 2012-06-27 | 华北电力大学 | Interconnected grid loss allocation method |
| CN105186492A (en) * | 2015-08-28 | 2015-12-23 | 南京邮电大学 | Network loss allocation method based on power flow tracing method and electrical dissecting method |
| CN106451431A (en) * | 2016-11-01 | 2017-02-22 | 中国电力科学研究院 | Transmission grid loss allocation method in hybrid transaction mode |
| CN106487009A (en) * | 2016-11-21 | 2017-03-08 | 广州供电局有限公司 | The active sensitivity detection method to electric network active network loss and the device of exerting oneself of power plant |
| WO2017071614A1 (en) * | 2015-10-30 | 2017-05-04 | Global Design Corporation Ltd. | Method for operating energy consumption metering system and energy consumption metering system |
| CN107122912A (en) * | 2017-05-02 | 2017-09-01 | 国网浙江省电力公司 | A kind of method of quick measuring and calculating small power supply line loss amortization ratio |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1758500A (en) * | 2004-10-09 | 2006-04-12 | 程思明 | Electric network current optimization control method |
| CN101794994A (en) * | 2010-01-27 | 2010-08-04 | 清华大学 | Power generation plan method considering network loss sharing under power market environment containing bilateral transaction |
-
2010
- 2010-08-27 CN CN 201010266102 patent/CN101958545A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1758500A (en) * | 2004-10-09 | 2006-04-12 | 程思明 | Electric network current optimization control method |
| CN101794994A (en) * | 2010-01-27 | 2010-08-04 | 清华大学 | Power generation plan method considering network loss sharing under power market environment containing bilateral transaction |
Non-Patent Citations (2)
| Title |
|---|
| 《华中电力》 20071231 许汉平等 华中区域电网网损分摊的实用研究 第1-2节 1 第20卷, 第1期 * |
| 《电力系统自动化》 20030225 刘梓洪等 国外典型区域电力市场网损分摊方法 29-32 1 第27卷, 第4期 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522744A (en) * | 2011-12-01 | 2012-06-27 | 华北电力大学 | Interconnected grid loss allocation method |
| CN102522744B (en) * | 2011-12-01 | 2014-01-22 | 华北电力大学 | Interconnected grid loss allocation method |
| CN105186492A (en) * | 2015-08-28 | 2015-12-23 | 南京邮电大学 | Network loss allocation method based on power flow tracing method and electrical dissecting method |
| CN105186492B (en) * | 2015-08-28 | 2016-10-05 | 南京邮电大学 | A kind of based on Tracing power flow with the loss allocation methods of electrical dissection |
| WO2017071614A1 (en) * | 2015-10-30 | 2017-05-04 | Global Design Corporation Ltd. | Method for operating energy consumption metering system and energy consumption metering system |
| GB2562905A (en) * | 2015-10-30 | 2018-11-28 | Global Design Corp Ltd | Method for operating energy consumption metering system and energy consumption metering system |
| CN106451431A (en) * | 2016-11-01 | 2017-02-22 | 中国电力科学研究院 | Transmission grid loss allocation method in hybrid transaction mode |
| CN106451431B (en) * | 2016-11-01 | 2022-07-08 | 中国电力科学研究院 | Network loss allocation method under hybrid transaction mode |
| CN106487009A (en) * | 2016-11-21 | 2017-03-08 | 广州供电局有限公司 | The active sensitivity detection method to electric network active network loss and the device of exerting oneself of power plant |
| CN107122912A (en) * | 2017-05-02 | 2017-09-01 | 国网浙江省电力公司 | A kind of method of quick measuring and calculating small power supply line loss amortization ratio |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101958545A (en) | Sensitivity-based loss allocation method | |
| CN110378058A (en) | A kind of method for building up for the electro thermal coupling microgrid optimal response model comprehensively considering reliability and economy | |
| CN108173293A (en) | Meter and the new energy active power output maximum value on-line calculation method of operation of power networks constraint | |
| CN110555590A (en) | secondary clearing method for watershed cascade upstream and downstream power stations participating in electric power spot market | |
| CN113469581B (en) | Carbon account data determination method, carbon management platform and storage medium | |
| CN104408903B (en) | A kind of micropower wireless meter reading method | |
| CN115719149B (en) | Distributed photovoltaic distribution and storage method based on block chain | |
| CN101794994A (en) | Power generation plan method considering network loss sharing under power market environment containing bilateral transaction | |
| CN106300412A (en) | Thermal storage electric boiler is dissolved in real time and is abandoned the appraisal procedure of wind-powered electricity generation amount ability | |
| CN105490309A (en) | Power grid peak regulation capacity-based wind power consumption evaluation method | |
| CN105977958B (en) | Bilateral transaction loss allocation methods based on network catalogue system | |
| CN101453188B (en) | Indication computing system with dynamic electricity generation side controlling performance standard | |
| CN114372641A (en) | Cooperative game-based micro-grid end-to-end power transaction blocking management method | |
| CN101465616A (en) | AGC set evaluating system based on UCPS | |
| CN203414525U (en) | Intelligent bidirectional metering electric energy meter | |
| CN105913338B (en) | Calculation unit and determination method for distribution index of carbon emission flow of power system | |
| CN105162143B (en) | A kind of determination method of optimal trade capacity between large regional grid | |
| CN105204466A (en) | Online electric energy managing device based on CDMA network telecommunication | |
| CN106786766B (en) | A method of the raising wind-powered electricity generation maximum grid connection capacity based on P2G technology | |
| CN117412201A (en) | Carbon metering network system and carbon metering data optimization acquisition method | |
| CN110991928A (en) | Energy management method and system for comprehensive energy system of multiple micro energy networks | |
| CN116316583A (en) | Power distribution network system toughness improving method, device and equipment based on energy storage sharing and storage medium | |
| CN104408557B (en) | A kind of flood season water power enrichment power network saves balancing power plant electric quantity of power supply distribution method | |
| CN108399728A (en) | A kind of the energy supply data collecting system and method for community | |
| CN109741207A (en) | A kind of Distribution system method for improving new energy and receiving ability |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110126 |