CN103500999B - Low voltage distribution area power supply radius optimization method based on real-time loss - Google Patents
Low voltage distribution area power supply radius optimization method based on real-time loss Download PDFInfo
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Abstract
The invention discloses a low voltage distribution area power supply radius optimization method based on real-time loss. The method comprises the following steps that (1), real-time collection data of a system are collected according to electricity information, and real-time circuit loss of each distribution area edge circuit and distribution area variable load and loss are computed; (2), circuit loss of every two adjacent circuits in the distribution area is compared, and a distribution area load switching scheme is made in advance; (3), the distribution area power supply radius is adjusted according to the switching scheme, and a carrier wave module arranged in the system is collected with the adoption of the electricity information to conduct distribution area user automatic identification on the adjusted distribution area; 4) real-time loss calculation is conducted on the adjusted distribution area, and whether distribution area loss is reduced is verified; 5) the steps are repeated, the other adjacent circuits of the distribution area are adjusted, and therefore the distribution area reaches the optimal power supply radius capable of reducing loss. The low voltage distribution area power supply radius optimization method adjusts the load between the low-voltage distribution areas to reach the optimal power supply radius on the basis of the real-time loss obtained through calculation of the collected system data, and is high in accuracy and good in practicability.
Description
Technical field
The present invention relates to a kind of radius of electricity supply optimization is carried out in use method according to the real-time loss data calculated by extraction system data.
Background technology
Power user power consumption information acquisition system, be the system power information of power consumer being gathered, processes and monitor in real time, realize the function such as the automatic collection of power information, metering exception monitoring, electric energy quality monitoring, electrical energy consumption analysis management, relevant information is issued, distributed energy is monitored, the information interaction of intelligent power equipment.System hardware framework comprises main website and on-site terminal two parts.On-site terminal part comprises terminal and electric energy meter two kinds of equipment, and collection point covers distribution transforming and all types of user, can realize power consumer electricity consumption information in Ge Tai district and entirely gather.
In a low-voltage power supply area, in the links within the given period, whole electricity of institute's loss are called line loss electricity, are called for short line loss.Loss in low-voltage platform area comprises line loss and distribution loss.Each line loss within the low-voltage platform area radius of electricity supply planned is not optimum, by loss prediction after loss calculation and adjustment, radius of electricity supply is adjusted, but need to carry out some Utopian hypothesis because theoretical loss calculates, and actual electric network also exists again the problems such as three-phase imbalance, time delay and parameter instability, these all can cause the loss of calculating according to theory inaccurate, and then are not optimum according to the determined radius of electricity supply of theoretical loss.Real-time loss is then due to its instantaneity with non-ly hypothetically can better carry out line optimization.By the instant data-transformation facility of power information acquisition system and acquisition terminal, the electric energy value of each collection point can be obtained.Calculate the real-time line loss of each bar circuit in low-voltage platform area on this basis, adjustment platform load in section, reduces the overall line loss in platform district, reaches Optimum Economic radius of electricity supply.
This method, on the basis based on the determined radius of electricity supply of theoretical loss, according to the real-time loss data calculated with extraction system, is optimized low-voltage platform area radius of electricity supply.
Summary of the invention
Object of the present invention: to calculate in low-voltage platform area the real-time loss of each circuit and the load of distribution transforming and loss on the basis of power information acquisition system real-time data collection, with the total real-time loss data in low-voltage platform area for foundation adjusts also to low-voltage platform area radius, to reducing the large circuit hop count of Ge Tai district internal loss, reach the object as far as possible reducing platform district internal loss.
For solving the problems of the technologies described above, the invention provides the low-voltage platform area radius of electricity supply optimization method based on real-time loss, it is characterized in that, comprise following steps:
(1) the actual time line loss of each area edge circuit and platform district distribution transformer load and loss is calculated according to the real-time data collection of power information acquisition system;
(2) the line loss consumption of adjacent lines in platform district is contrasted, the interval load handover scheme of pre-formulation platform;
Distribution transformer load after pre-estimation platform interval circuit switches and distribution loss, whether assessment handover scheme can reduce Ge Tai district overall loss can not make distribution transforming exceed capacity again;
(3) adjust platform district radius of electricity supply according to handover scheme, under using the carrier module be equipped with in power information acquisition system to carry out platform district to adjustment Hou Tai district, user identifies automatically;
(4) carry out real-time loss calculating to adjustment Hou Tai district, whether checking platform district loss reduces;
(5) repeat all the other adjacent lines of above step adjustment platform district, Shi Getai district reaches the optimal power radius than existing reduction loss.
According to the loss size of platform district adjacent lines, the interval adjustment of load scheme of pre-formulation platform.In described step (2), the interval load handover scheme of the pre-platform formulated is: for the loss of one of them area edge circuit higher than the contiguous loss belonging to the edge circuit in another district, by this area edge circuit be adjusted to platform district belonging to the little neighboring edge circuit of line loss with user.
Formulate multiple handover scheme, based on the line loss calculated by extraction system real time data and distribution transformer load and loss value, to carrying out the total real-time loss in adjustment background partition by each handover scheme and distribution load is estimated, select and can reduce Ge Tai district overall loss distribution transforming can not be made again to surpass the scheme of appearance, and carry out the interval adjustment of load of platform by the program and switch.
Real-time loss is the accurately reliable data calculated according to the data of power information acquisition system.Real-time loss comprises line loss and distribution loss two parts, and first adjust rear real-time loss to Adjusted Option when carrying out platform interval adjustment of load and estimate, execution can reduce Ge Tai district overall loss can not make again distribution transforming surpass the Adjusted Option of appearance.
In step (4), after Ge Tai district identifies beneath user again, stoichiometric point adjusts accordingly, and according to the loss of the circuit after the real time data calculating adjustment that stoichiometric point is adopted, whether checking adjustment Hou Getai district total losses reduce.
Can repeatedly contrast fringes line loss, after estimating adjustment, loss also adjusts platform district, reaches Optimum Economic radius of electricity supply to Shi Getai district.
Principle process of the present invention is specifically described as follows:
(1) the Part I of technical scheme: Jiangsu Province has realized the covering on a large scale of power information acquisition system (with extraction system), in each low-voltage platform area, the high-pressure side of each distribution transforming, low-pressure side and all types of user place substantially achieve stoichiometric point and cover, the point energy at each circuit two ends can gather, therefore, the real time data collected with extraction system can be utilized to carry out real-time loss calculating to each section of circuit in platform district.
(2) the Part II of technical scheme: each district has adjacent circuit, is referred to as platform district radius edge circuit.During due to platform section planning originally, loss is not main starting point, add low-voltage platform area user numerous, wiring is complicated, the loss of some the edge circuits in planning Hao Tai district can far above the contiguous edge circuit belonging to another district, therefore, can to formulate this edge circuit be adjusted to the Adjusted Option in the platform district belonging to the less neighboring edge circuit of line loss with user.
(3) the Part III of technical scheme: after determining several Adjusted Option, based on the line loss calculated by extraction system real time data and distribution transformer load and loss value, to carrying out the total real-time loss in adjustment background partition by each Adjusted Option and distribution load is estimated, select and can reduce Ge Tai district overall loss distribution transforming can not be made again to surpass the Adjusted Option of appearance, and carry out the interval adjustment of load of platform by Adjusted Option.
(4) the Part IV of technical scheme: after the adjustment of platform district radius of electricity supply, the user under Ge Tai district there occurs change, and the platform district namely belonging to some collection points there occurs change, therefore needs the user under Xian Duitai district to identify.In existing extraction system, carrier module is housed, utilizes carrier pulse bidirectional recognition method can realize the automatic identification of user under Ge Tai district easily.
(5) the Part V of technical scheme: after Ge Tai district identifies beneath user again, stoichiometric point is also adjusted accordingly, then the real time data can adopted according to stoichiometric point calculates the loss of the circuit after adjustment, to verify whether adjustment Hou Getai district total losses reduce.
The beneficial effect that the present invention reaches:
User type under low-voltage platform area is various, One's name is legion, does not consider loss during original planning platform district radius.The serious section of loss, the particularly adjacent in Liang Getai district may be there is in existing platform district.The computational methods of loss have theoretical loss and real-time loss two kinds, and theoretical loss hypothesis is many, and in the loss calculation of reality, precision is lower.
And the real-time loss precision calculated according to power information acquisition system data is high and real-time good, can each section of loss and transformer loss in reaction bench district accurately.The present invention is based on the real-time loss that use extraction system data calculate, the load between adjustment low-voltage platform area is to reaching the economic power supply radius of the reduction loss of optimum, and accuracy is high, practical.
Accompanying drawing explanation
Fig. 1 is the key diagram of the low-voltage platform area radius of electricity supply optimization method that the present invention is based on real-time loss.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
The key diagram that the present invention is based on the low-voltage platform area radius of electricity supply optimization method of real-time loss as shown in Figure 1, the Liang Ge adjacent stations district in the reality represented for this figure is described.
First the district of platform shown in key diagram situation: figure is the schematic diagram in Liang Getai district, comprises and specially becomes user and ordinarily resident user's group, specially becomes user and resident and organizes 1,3,5 and be connected on and always fall transformer 1 time, form low-voltage platform area 1; Resident organizes 2,4,6 and is connected on and always falls transformer 2 times, forms low-voltage platform area 2.Resident organizes 1 and 2 adjacent geographically; Resident organizes 3 and 4 adjacent geographically; Resident organizes 5 and 6 adjacent geographically.Platform district completely covers power information acquisition system between two, always fall the former secondary of transformer 1,2, each node, each user place be all provided with collection point, the full collection of power information can be realized.A, B, C, D, A in figure ', B ', C ', D ' they are part collection point.
The present embodiment step is as follows: (1) each collection point Real-time Collection each point power information data, calculates the actual time line loss of Ge Tai district circuit and platform district distribution transformer load and loss according to real time data.A point power consumption subtracts B point power consumption can obtain the loss of always falling transformer 1; C point power consumption subtracts the line loss that D point power consumption can obtain CD section.In like manner can obtain the line loss of the loss of always falling transformer 2 and C ' D ' section.
(2) if the loss of contrast CD section is far above the loss of C ' D ', tentatively formulate and resident is organized the scheme that 5 switch to low-voltage platform area 2.Calculating the current load always falling transformer according to adopting data, seeing whether always fall transformer can bear the load that newly-increased resident organizes 5.The change of always falling transformer load can affect its loss, can estimate the variable quantity of transformer loss according to load variations amount.On the super basis held of transformer, according to the feasibility of the variable quantity of line loss and the variable quantity evaluation scheme of transformer loss.
(3) calculate the total losses finding to switch Hou Liangtai district to reduce, then perform handover scheme, under the carrier module be equipped with in use extraction system after switching carries out platform district to adjustment Hou Tai district, user identifies automatically.Resident organizes 5 and is grouped into confession radio area 2 times, and the radius of electricity supply for radio area 2 increases, and the radius of electricity supply for radio area 1 reduces.
(4) real-time loss calculating is carried out, to verify whether Liang Tai district total losses reduce to adjustment Hou Liangtai district.
(5) repeat above step adjustment platform district, in going two, other adjacent lines adjust, and reach Optimum Economic radius of electricity supply to Shi Liangtai district.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.
Claims (4)
1., based on a low-voltage platform area radius of electricity supply optimization method for real-time loss, it is characterized in that, comprise following steps:
(1) the actual time line loss of each area edge circuit and platform district distribution transformer load and loss is calculated according to the real-time data collection of power information acquisition system;
(2) the line loss consumption of adjacent lines in platform district is contrasted, the interval load handover scheme of pre-formulation platform;
Distribution transformer load after pre-estimation platform interval circuit switches and distribution loss, whether assessment handover scheme can reduce Ge Tai district overall loss can not make distribution transforming exceed capacity again;
(3) adjust platform district radius of electricity supply according to handover scheme, under using the carrier module be equipped with in power information acquisition system to carry out platform district to adjustment Hou Tai district, user identifies automatically;
(4) carry out real-time loss calculating to adjustment Hou Tai district, whether checking platform district loss reduces;
In step (4), after Ge Tai district identifies beneath user again, stoichiometric point adjusts accordingly, and according to the loss of the circuit after the real time data calculating adjustment that stoichiometric point is adopted, whether checking adjustment Hou Getai district total losses reduce;
(5) repeat all the other adjacent lines of above step adjustment platform district, Shi Getai district is than reaching the optimal power radius reducing loss before adjustment;
In described step (2), the interval load handover scheme of the pre-platform formulated is: for the loss of one of them area edge circuit higher than the contiguous loss belonging to the edge circuit in another district, by this area edge circuit be adjusted to platform district belonging to the little neighboring edge circuit of line loss with user.
2. the low-voltage platform area radius of electricity supply optimization method based on real-time loss according to claim 1, it is characterized in that, formulate multiple handover scheme, the line loss calculated based on power information acquisition system real time data and distribution transformer load and loss value, to carrying out the total real-time loss in adjustment background partition by each handover scheme and distribution load is estimated, select and can reduce Ge Tai district overall loss distribution transforming can not be made again to surpass the scheme of appearance, and carry out the interval adjustment of load of platform by the program and switch.
3. the low-voltage platform area radius of electricity supply optimization method based on real-time loss according to claim 1, it is characterized in that, real-time loss comprises line loss and distribution loss two parts, carry out first estimating in advance the real-time loss after adjustment when the interval load of platform switches, perform and can reduce the handover scheme that Ge Tai district overall loss can not make again distribution transforming exceed capacity.
4. the low-voltage platform area radius of electricity supply optimization method based on real-time loss according to claim 1, is characterized in that, repeatedly contrast each area edge line loss, and the loss after pre-estimation switches also adjusts platform district.
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| CN105656029B (en) * | 2016-01-26 | 2018-08-17 | 国网山东省电力公司青岛供电公司 | A kind of super radius of electricity supply of low-voltage power supply taiwan area load point determines method and device |
| CN106529758B (en) * | 2016-09-13 | 2022-09-20 | 国网山东省电力公司青岛供电公司 | Method and device for judging rationality of power supply area of distribution transformer |
| CN107093897A (en) * | 2017-05-13 | 2017-08-25 | 国网安徽省电力公司芜湖供电公司 | A kind of distribution net platform region low pressure loss analysis method |
| CN108512224A (en) * | 2018-04-12 | 2018-09-07 | 周桂林 | A kind of low-voltage platform area radius of electricity supply optimization method calculated in real time based on loss |
| CN108832631A (en) * | 2018-07-19 | 2018-11-16 | 贵州电网有限责任公司 | A kind of mesolow distribution network overhead line radius of electricity supply calculation method |
| CN110231528B (en) * | 2019-06-17 | 2021-05-28 | 国网重庆市电力公司电力科学研究院 | Transformer household variation common knowledge identification method and device based on load characteristic model library |
| CN112035784B (en) * | 2020-07-16 | 2024-04-09 | 中国电力科学研究院有限公司 | Method and system for determining loss of low-voltage transformer area based on electricity consumption acquisition data |
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| CN102570459A (en) * | 2012-02-15 | 2012-07-11 | 中国电力科学研究院 | Method for monitoring voltage quality |
| CN103093391A (en) * | 2011-10-28 | 2013-05-08 | 上海博英信息科技有限公司 | City power distribution network arranging method |
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| CN101127442A (en) * | 2007-06-22 | 2008-02-20 | 泰州苏源科电有限公司 | Control method and system for 10kV and lower distribution grid no power voltage optimized operation |
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