CN105205740A - Power distribution network power supply capacity evaluation method considering effective extension of interconnections of main transformers - Google Patents
Power distribution network power supply capacity evaluation method considering effective extension of interconnections of main transformers Download PDFInfo
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- CN105205740A CN105205740A CN201510696198.6A CN201510696198A CN105205740A CN 105205740 A CN105205740 A CN 105205740A CN 201510696198 A CN201510696198 A CN 201510696198A CN 105205740 A CN105205740 A CN 105205740A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
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- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Abstract
The invention discloses a power distribution network power supply capacity evaluation method considering effective extension of interconnections of main transformers. The evaluation method comprises the following steps: confirming the load capacity carried by the main transformers under set power supply capacity; confirming constraint conditions required to be considered in extension of interconnection relationship; putting forward a solution method for carrying out effective extension based on interconnections of main transformers; putting forward an evaluation process of power supply capacity of a medium voltage distribution network considering effective extension of interconnections of main transformers, wherein the evaluation process comprises the steps of analyzing a connection structure of main transformers, determining load capacity carried by a feeder line, and calculating power supply capacity. According to the evaluation method, support is provided for comprehensive and effective evaluation of power supply capacity of a conventional distribution network structure, the evaluation method of power supply capacity of the medium voltage distribution network is perfected, the management level of urban distribution network planning is improved, the reasonable development of an urban power network construction structure and a planning technology is promoted, and the evaluation method has certain guiding significance on planning and evaluation of power supply capacity of the distribution network.
Description
Technical field
The present invention relates to a kind of medium voltage distribution network evaluation of power supply capability method.Particularly relate to a kind of power distribution network evaluation of power supply capability method that main transformer interconnecting relation is effectively expanded of considering.
Background technology
Distribution system is electric system generating, need in transmission and disttrbution three important steps directly towards the link of power consumer, is also the important step ensureing the reliable electricity consumption of user security simultaneously.Therefore, how to meet the need for electricity of user, and can provide reliably to user, the electric energy of high-quality is very crucial, and has certain economic benefit and social benefit.And in the assessment of distribution system, power supply capacity is the key component of current city electrical network assessment development.The power supply capacity of power distribution network refers to that in certain power supply area, electrical network is meeting under certain safety criterion, at utmost can meet the ability of user power utilization.The power supply capacity of power distribution network is an index that directly can reflect electric network reliability and security.Therefore, how rationally, the power supply capacity in comprehensive assessment area not only for the continuing of user, reliable power supply provide guarantee, to the planning of power distribution network with run there is important directive significance equally.
Evaluation measures at present for power distribution network power supply capacity is mainly reflected in two aspects, namely based on the power supply capacity computing method of main transformer interconnecting relation and the power supply capacity computing method based on feeder interconnection relationship.Power supply capacity computing method based on main transformer interconnecting relation are based on the interconnecting relation of main transformer in transformer station, and consider the communication relationship (comprise in station and getting in touch with between contact and station) between main transformer and contact capacity, build rational mathematical model, the peak load that each main transformer can be born under set constraint condition is assessed, and according to this as the power supply capacity of system.Computing method based on feeder interconnection relationship are then the feeder line aspects that the constraint link of consideration be extend to below main transformer, not only consider the restraint condition of safety criterion in main transformer aspect, and the feeder line aspect also arrived by safety criterion constraint expansion under main transformer, has carried out more careful and comprehensive analysis.The peak load that be can bear by assessment verification feeder line layer is as the corresponding power supply capacity of power distribution network.
But above-mentioned two kinds of methods are all based on a kind of set and relatively complete grid structure, that is, above-mentioned two kinds of methods are all have certain specific aim in use, carry out the selection in method according to the information state of known rack.But for certain areas, before carried out evaluation of power supply capability is generally all based on main transformer interconnecting relation, if but want to continue to assess more comprehensively this region, then need rationally, the power supply state of main transformer interconnecting relation distributes and expands to feeder line aspect, then calculate the power supply capacity of this area according to the computing method based on feeder interconnection relationship by effective method.Therefore, consider above-mentioned situation, a kind of medium voltage distribution network evaluation of power supply capability method of main transformer interconnecting relation being carried out effectively expansion is proposed, expansion can be proceeded on the basis based on the interconnected relationship assessment power supply capacity of main transformer, and also can associate based on main transformer interconnecting relation with the power supply capacity computing method based on feeder interconnection relationship, the power supply capacity in more effective, comprehensive, complete analysis area, improves the appraisal procedure of power supply capacity.To the coordination comprehensive planning in area, there is certain directive significance.
Summary of the invention
Technical matters to be solved by this invention is, provides a kind of power distribution network evaluation of power supply capability method that consideration main transformer interconnecting relation that can provide support for comprehensive, the Efficient Evaluation of existing distribution net work structure power supply capacity is effectively expanded.
The technical solution adopted in the present invention is: a kind ofly consider the power distribution network evaluation of power supply capability method that main transformer interconnecting relation is effectively expanded, and comprises the steps:
1) determine each main transformer under set power supply capacity with load
When known region distribution network power supply capacity, the computing formula solving each main transformer institute on-load amount is as follows:
R
Li＝R
i·T
i(1)
In formula, R
liby calculating i-th main transformer under set power supply state with load, R
ifor the rated capacity of main transformer i, T
ifor the load factor for main transformer i;
2) the required constraint condition considered of interconnecting relation expansion
(1) load equality constraint
(2) turn for constraint
(3) main transformer capacity constraint
(4) capacity-constrained is got in touch with
(5) N-1 verification constraint;
3) method for solving carrying out effectively expansion based on main transformer interconnecting relation is proposed
(1) determination of feeder line model is expanded
(2) determination of feeder line quantity is expanded;
4) a kind of medium voltage distribution network evaluation of power supply capability flow process that main transformer interconnecting relation is effectively expanded of considering is proposed
(1) main transformer contact structure analysis.According to the known contact structural model based on main transformer interconnecting relation, determine every platform main transformer with load;
(2) feeder line institute on-load amount is determined, based on the contact capacity-constrained amount in main transformer interconnecting relation between main transformer, and in conjunction with feeder line model given in " state's network planning draws Guidance Rule " and N-1 criterion, determine the quantity of feeder line and the type of feeder line;
(3) power supply capacity calculates, based on the determined contact structural model based on main transformer interconnecting relation, and in conjunction with N-1 criterion, determine every bar feeder line with load, thus calculate the net capability of regional distribution network.
Step 2) described in load equality constraint, what represent is capacity equation relation in distribution system between each main transformer be connected feeder line, namely main transformer under set power supply state with load should equal main transformer under connect feeder line with load sum, concrete manifestation form is:
In formula, R
iqrepresent the q article of feeder line be connected with i-th main transformer; T
iqrepresent the load factor of the q article of feeder line be connected with i-th main transformer.
Step 2) described in turn for constraint, refer to when intermediate distribution system causes a main transformer out of service because of fault or maintenance, other main transformers got in touch with it should share move back fortune main transformer load, turn for constraint formulations as follows:
In formula, t
ijwhen representing that main transformer i carries out N-1 verification, main transformer j is the load capacity that main transformer i bears, and main transformer j can be that the same station owner of main transformer i becomes, also can be have a feeder line communication relationship with main transformer i station outside main transformer.
Step 2) described in main transformer capacity constraint, refer to that main transformer for moving back fortune main transformer share loads is turning for cannot overlond running after occurring, main transformer capacity constraint formulations is as follows:
Main transformer capacity constraint formulations represents that main transformer i carries out " N-1 " when verifying, and the load capacity being transferred to main transformer j adds that the load of main transformer j self is no more than its rated capacity, and transfer load is here transfer between transfer or station in station
Step 2) described in contact capacity-constrained, be the contact capacity-constrained that load transfer plan is subject to, formula is as follows:
In formula, C
ijrepresent the contact capacity between main transformer i and main transformer j, if main transformer i and main transformer j belongs to same transformer station, main transformer i and main transformer j affects by substation bus bar, if belong to different substation, main transformer i and main transformer j is by the impact of interconnector.
Step 2) described in N-1 verification constraint, be to determine under main transformer connect in the process of feeder line quantity, the contact capacity-constrained between the constraint of main transformer capacity in main transformer interconnecting relation and main transformer should be considered, and meet the required safety criterion met in the process of evaluation of power supply capability, i.e. N-1 criterion.
Step 3) described in the determination of expansion feeder line model, be model according to 10kV feeder line given in " state's network planning draws Guidance Rule " in the selection of feeder line model, as the feeder line model considered in extension of network.
Step 3) described in the determination of expansion feeder line quantity, be the load total amount first determining shared required for feeder line between two main transformers, then choose suitable feeder line type in conjunction with feeder line model, finally determine the feeder line quantity between two main transformers.
The power distribution network evaluation of power supply capability method that consideration main transformer interconnecting relation of the present invention is effectively expanded, effectively expands the network structure based on main transformer interconnecting relation, thus obtains the network structure based on the interconnected aspect of feeder line.Further, the contact structure extension based on main transformer interconnecting relation has been arrived feeder line aspect by the relevant information in distribution network.Meanwhile, also two kinds of evaluation of power supply capability methods based on different aspects are carried out effective combination, the process that perfect power supply capacity calculates.The present invention can provide support for comprehensive, the Efficient Evaluation of existing distribution net work structure power supply capacity, and the perfect appraisal procedure for medium voltage distribution network power supply capacity, be conducive to the management level promoting urban distribution network planning, promote the Rational Development of Construction of Intercity Network structure and planning technology, the assessment for distribution network planning and power supply capacity has certain directive significance.
Accompanying drawing explanation
Fig. 1 is the power distribution network evaluation of power supply capability method flow diagram that consideration main transformer interconnecting relation of the present invention is effectively expanded;
Fig. 2 is system main transformer communication relationship schematic diagram;
Fig. 3 is feeder line communication relationship schematic diagram between T2 main transformer and T3 main transformer;
Fig. 4 is feeder line communication relationship schematic diagram between T2 main transformer and T5 main transformer;
Fig. 5 is feeder line contact whole relation schematic diagram.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the power distribution network evaluation of power supply capability method that consideration main transformer interconnecting relation of the present invention is effectively expanded is described in detail.
As shown in Figure 1, the power distribution network evaluation of power supply capability method that consideration main transformer interconnecting relation of the present invention is effectively expanded, comprises the steps:
1) determine each main transformer under set power supply capacity with load
Power supply capacity refers under the condition meeting certain safety criterion, the maximum ability supplying user power utilization of power distribution network in certain area, namely power distribution network meet certain safety criterion by maximum amount of power.
Method proposed by the invention is on the known basis getting in touch with structure and corresponding power supply capacity thereof based on main transformer interconnecting relation, rational extended method is adopted to expand power distribution network network structure, thus obtain the communication relationship of feeder line aspect, and then can be as accurate as feeder line aspect when again evaluation of power supply capability being carried out to this regional distribution network network, thus refinement, perfect evaluation of power supply capability method, obtain more accurate, that there is reference value result.
When known region distribution network power supply capacity, the computing formula solving each main transformer institute on-load amount is as follows:
R
Li＝R
i·T
i(1)
In formula, R
liby calculating i-th main transformer under set power supply state with load, R
ifor the rated capacity of main transformer i, T
ifor the load factor for main transformer i;
2) the required constraint condition considered of interconnecting relation expansion
(1) load equality constraint
The capacity equation relation that what load equality constraint represented is in distribution system between each main transformer be connected feeder line, namely main transformer under set power supply state with load should equal main transformer under connect feeder line with load sum, concrete manifestation form is:
In formula, R
iqrepresent the q article of feeder line be connected with i-th main transformer; T
iqrepresent the load factor of the q article of feeder line be connected with i-th main transformer;
(2) turn for constraint
Turn and supply constraint specification when intermediate distribution system causes a main transformer out of service because of fault or maintenance, other main transformers got in touch with it should share the load moving back fortune main transformer, turn as follows for constraint formulations:
In formula, t
ijwhen representing that main transformer i carries out N-1 verification, main transformer j is the load capacity that main transformer i bears, and main transformer j can be that the same station owner of main transformer i becomes, also can be have a feeder line communication relationship with main transformer i station outside main transformer.
(3) main transformer capacity constraint
Main transformer capacity constraint specification is turning for cannot overlond running after occurring for the main transformer that moves back fortune main transformer share loads; Main transformer capacity constraint formulations is as follows:
Main transformer capacity constraint formulations represents that main transformer i carries out " N-1 " when verifying, and the load capacity being transferred to main transformer j adds that the load of main transformer j self is no more than its rated capacity, and transfer load is here transfer between transfer or station in station.
(4) capacity-constrained is got in touch with
Fault turn for time load can not unrestrictedly shift: most major station internal loading transfer capacity can be subject to the restriction of substation low-voltage side busbar carrying capacity; And load transfer plan relies on the contact between feeder line between station, so load transfer plan capacity restricts by factors such as feeder line models between most major station.When studying power supply capacity, the peak load transfer capacity in the station affected and between station being combined being called contact capacity by above factor.For the contact capacity in station, generally obtained by the operations specification of transformer station and criterion; For the contact capacity between station, combing can be verified by 10kV circuit " N-1 " and obtain.The contact capacity-constrained formula that load transfer plan is subject to is as follows:
In formula, C
ijrepresent the contact capacity between main transformer i and main transformer j, if main transformer i and main transformer j belongs to same transformer station, main transformer i and main transformer j affects by substation bus bar, if belong to different substation, main transformer i and main transformer j is by the impact of interconnector.
(5) N-1 verification constraint
To determine under main transformer connect in the process of feeder line quantity, the contact capacity-constrained between the constraint of main transformer capacity in main transformer interconnecting relation and main transformer should be considered, and meet the required safety criterion met in the process of evaluation of power supply capability, i.e. N-1 criterion.
3) method for solving carrying out effectively expansion based on main transformer interconnecting relation is proposed
From last point for the constraint condition considered required in expansion process, the network structure based on main transformer interconnecting relation is expanded to interconnected network structure based on feeder line aspect topmost to determine exactly each main transformer lower connect the quantity of feeder line and the model of feeder line.Again according to each main transformer with load determine every bar feeder line with load and carry out N-1 verification.To be specifically described this process below.
(1) determination of feeder line model is expanded
The selection of feeder line model is the model according to 10kV feeder line given in " state's network planning draws Guidance Rule ", the feeder line model as considering in extension of network:
The through-put power analysis of table 110kV feeder line
(2) determination of feeder line quantity is expanded
In the process determining feeder line quantity, due to emphasis it is considered that the connection type of " handing in hand ", and need in conjunction with N-1 criterion.Therefore, first determine the load total amount of shared required for feeder line between two main transformers, then choose suitable feeder line type in conjunction with feeder line model, finally determine the feeder line quantity between two main transformers.In a word, in the process determining feeder line model, ensure not occur too many feeder line model in power distribution network as far as possible, in addition in view of the connection type of " handing in hand ", need to ensure every bar feeder line with load do not exceed 50% of feeder line capacity.
4) a kind of medium voltage distribution network evaluation of power supply capability flow process that main transformer interconnecting relation is effectively expanded of considering is proposed
(1) main transformer contact structure analysis.According to the known contact structural model based on main transformer interconnecting relation, determine every platform main transformer with load;
(2) feeder line institute on-load amount is determined, based on the contact capacity-constrained amount in main transformer interconnecting relation between main transformer, and in conjunction with feeder line model given in " state's network planning draws Guidance Rule " and N-1 criterion, determine the quantity of feeder line and the type of feeder line;
(3) power supply capacity calculates, based on the determined contact structural model based on main transformer interconnecting relation, and in conjunction with N-1 criterion, determine every bar feeder line with load, thus calculate the net capability of regional distribution network.
Provide preferred forms below:
With the actual distribution net work structure in somewhere for example, set up the contact model based on main transformer interconnecting relation, and expanded to feeder line aspect according to N-1 criterion and load constraint, and calculate the net capability under this grid structure with this.
1) determination of each main transformer institute on-load
The contact structure of the main transformer interconnecting relation of this area as shown in Figure 2, each transformer station relevant information is as shown in table 2, consider when N-1 criterion, and be 98.5MVA based on the determined net capability of main transformer interconnecting relation, as shown in table 3 in the load factor situation of the next main transformer of this electric power thus supplied:
Transformer station's configuring condition table in table 2 example
The load factor information slip of main transformer in table 3 example
| Main transformer | S 11 | S 12 | S 21 | S 22 | S 31 | S 32 |
| Load factor (%) | 65.0 | 65.0 | 75.0 | 75.0 | 67.5 | 67.5 |
Therefore, according to " every platform main transformer institute on-load=main transformer capacity × main transformer load factor " can obtain under electric power thus supplied set above every platform main transformer with load size, concrete condition is as shown in table 4:
Institute's on-load amount information slip of main transformer in table 4 example
2) determination of feeder line situation in power distribution network
What this part was mainly determined is that after main transformer interconnecting relation is carried out expanding to feeder line aspect, the information of corresponding feeder line aspect, comprises feeder line model, feeder line capacity etc.Demonstrated in Figure 2 go out based in the contact structural representation of main transformer interconnecting relation, the contact capacity between each main transformer as shown in Figure 5:
Feeder line is pressed to get in touch with capacities chart in the basic example of table 5
In contact capacity-constrained shown in table 5, between T1 and T2, between T3 and T4, between T5 and T6, belong to contact in station.In the explanation determining feeder line information, the present invention is specifically described for T2 main transformer.
(1) determination of feeder line structure between T2 main transformer and T3 main transformer
From demonstrated in Figure 2 go out the contact structural representation based on main transformer interconnecting relation, communication relationship is there is between T2 main transformer and T3 main transformer, and as shown in Table 5, contact capacity-constrained between two main transformers is 8MVA, consider N-1 criterion, and two feeder line structure emphasis between main transformer it is considered that the form of " handing in hand ", the feeder line therefore between two main transformers needs altogether the load bearing 8 ÷ 50%=16MVA.Various feeder line models given in associative list 1, select four capacity to be that the feeder line of 8.66MVA is as the interconnection tie between T2 main transformer and T3 main transformer.Concrete structure as shown in Figure 3.
(2) determination of feeder line structure between T2 main transformer and T5 main transformer
In like manner, from demonstrated in Figure 2 go out the contact structural representation based on main transformer interconnecting relation, communication relationship is there is between T2 main transformer and T5 main transformer, and as shown in Table 5, contact capacity-constrained between two main transformers is 3MVA, consider N-1 criterion, and the feeder line structure emphasis between two main transformers is it is considered that the form of " handing in hand ", the feeder line therefore between two main transformers needs altogether the load bearing 3 ÷ 50%=6MVA.Various feeder line models given in associative list 1, select two capacity to be that the feeder line of 8.66MVA is as the interconnection tie between T2 main transformer and T3 main transformer.Concrete structure as shown in Figure 4.
(3) based on the overall communication relationship schematic diagram of feeder interconnection relationship
Communication relationship in Fig. 2 is made a concrete analysis of one by one according to above-mentioned analytical approach, obtain based on feeder interconnection relationship overall communication relationship schematic diagram as shown in Figure 5.
Can analyze by the network structure based on main transformer interconnecting relation by certain rational method according to the above results, and communication relationship is expanded by the network information that combination is correlated with, and finally obtains the communication relationship structure based on feeder line aspect.Interconnecting relation between main transformer has been carried out effective expansion by this method, and the relevant information in distribution network is by the contact structure based on main transformer interconnecting relation, extend to feeder line aspect.The process that perfect power supply capacity calculates, the assessment for distribution network planning and power supply capacity has certain directive significance.
Claims (8)
1. consider to it is characterized in that the power distribution network evaluation of power supply capability method that main transformer interconnecting relation is effectively expanded, comprise the steps:
1) determine each main transformer under set power supply capacity with load
When known region distribution network power supply capacity, the computing formula solving each main transformer institute on-load amount is as follows:
R
Li＝R
i·T
i(1)
In formula, R
liby calculating i-th main transformer under set power supply state with load, R
ifor the rated capacity of main transformer i, T
ifor the load factor for main transformer i;
2) the required constraint condition considered of interconnecting relation expansion
(1) load equality constraint
(2) turn for constraint
(3) main transformer capacity constraint
(4) capacity-constrained is got in touch with
(5) N-1 verification constraint;
3) method for solving carrying out effectively expansion based on main transformer interconnecting relation is proposed
(1) determination of feeder line model is expanded
(2) determination of feeder line quantity is expanded;
4) a kind of medium voltage distribution network evaluation of power supply capability flow process that main transformer interconnecting relation is effectively expanded of considering is proposed
(1) main transformer contact structure analysis.According to the known contact structural model based on main transformer interconnecting relation, determine every platform main transformer with load;
(2) feeder line institute on-load amount is determined, based on the contact capacity-constrained amount in main transformer interconnecting relation between main transformer, and in conjunction with feeder line model given in " state's network planning draws Guidance Rule " and N-1 criterion, determine the quantity of feeder line and the type of feeder line;
(3) power supply capacity calculates, based on the determined contact structural model based on main transformer interconnecting relation, and in conjunction with N-1 criterion, determine every bar feeder line with load, thus calculate the net capability of regional distribution network.
2. the power distribution network evaluation of power supply capability method effectively expanded of consideration main transformer interconnecting relation according to claim 1, it is characterized in that, step 2) described in load equality constraint, what represent is capacity equation relation in distribution system between each main transformer be connected feeder line, namely main transformer under set power supply state with load should equal main transformer under connect feeder line with load sum, concrete manifestation form is:
In formula, R
iqrepresent the q article of feeder line be connected with i-th main transformer; T
iqrepresent the load factor of the q article of feeder line be connected with i-th main transformer.
3. the power distribution network evaluation of power supply capability method effectively expanded of consideration main transformer interconnecting relation according to claim 1, it is characterized in that, step 2) described in turn for constraint, refer to when intermediate distribution system causes a main transformer out of service because of fault or maintenance, other main transformers got in touch with it should share the load moving back fortune main transformer, turn as follows for constraint formulations:
In formula, t
ijwhen representing that main transformer i carries out N-1 verification, main transformer j is the load capacity that main transformer i bears, and main transformer j can be that the same station owner of main transformer i becomes, also can be have a feeder line communication relationship with main transformer i station outside main transformer.
4. the power distribution network evaluation of power supply capability method effectively expanded of consideration main transformer interconnecting relation according to claim 1, it is characterized in that, step 2) described in main transformer capacity constraint, refer to that main transformer for moving back fortune main transformer share loads is turning for cannot overlond running after occurring, main transformer capacity constraint formulations is as follows:
Main transformer capacity constraint formulations represents that main transformer i carries out " N-1 " when verifying, and the load capacity being transferred to main transformer j adds that the load of main transformer j self is no more than its rated capacity, and transfer load is here transfer between transfer or station in station.
5. the power distribution network evaluation of power supply capability method effectively expanded of consideration main transformer interconnecting relation according to claim 1, is characterized in that, step 2) described in contact capacity-constrained, be the contact capacity-constrained that load transfer plan is subject to, formula is as follows:
In formula, C
ijrepresent the contact capacity between main transformer i and main transformer j, if main transformer i and main transformer j belongs to same transformer station, main transformer i and main transformer j affects by substation bus bar, if belong to different substation, main transformer i and main transformer j is by the impact of interconnector.
6. the power distribution network evaluation of power supply capability method effectively expanded of consideration main transformer interconnecting relation according to claim 1, it is characterized in that, step 2) described in N-1 verification constraint, be to determine under main transformer connect in the process of feeder line quantity, the contact capacity-constrained between the constraint of main transformer capacity in main transformer interconnecting relation and main transformer should be considered, and meet the required safety criterion met in the process of evaluation of power supply capability, i.e. N-1 criterion.
7. the power distribution network evaluation of power supply capability method effectively expanded of consideration main transformer interconnecting relation according to claim 1, it is characterized in that, step 3) described in the determination of expansion feeder line model, be model according to 10kV feeder line given in " state's network planning draws Guidance Rule " in the selection of feeder line model, as the feeder line model considered in extension of network.
8. the power distribution network evaluation of power supply capability method effectively expanded of consideration main transformer interconnecting relation according to claim 1, it is characterized in that, step 3) described in the determination of expansion feeder line quantity, it is the load total amount first determining shared required for feeder line between two main transformers, choose suitable feeder line type in conjunction with feeder line model again, finally determine the feeder line quantity between two main transformers.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106941256A (en) * | 2017-05-07 | 2017-07-11 | 东北电力大学 | The power distribution network main transformer contact structure optimization planing method of meter and net capability and minimum contact construction cost |
| CN109030933A (en) * | 2018-08-30 | 2018-12-18 | 东方电子股份有限公司 | A method of the extraction current maxima based on feeder line group |
| CN109412155A (en) * | 2018-11-16 | 2019-03-01 | 国网江苏省电力有限公司盐城供电分公司 | A kind of power distribution network evaluation of power supply capability method calculated based on figure |
| CN109754123A (en) * | 2019-01-12 | 2019-05-14 | 国网江西省电力有限公司经济技术研究院 | The distance weighted positioned alternate method of rotation centerline that feeder line supply district divides |
| CN109858672A (en) * | 2018-12-26 | 2019-06-07 | 国网江苏省电力有限公司苏州供电分公司 | Consider that regional internet turns the main adapted integration scope of power outage appraisal procedure supplied |
| CN112200410A (en) * | 2020-09-09 | 2021-01-08 | 天津大学 | Load balancing optimization method for distribution transformer cluster based on discrete monkey cluster algorithm |
| CN114552579A (en) * | 2022-04-25 | 2022-05-27 | 国网天津市电力公司电力科学研究院 | Power distribution network maximum power supply capacity calculation method considering low-voltage transformer area flexible interconnection |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101431238A (en) * | 2008-09-12 | 2009-05-13 | 天津天大求实电力新技术股份有限公司 | Power distribution network power supply capacity evaluation method considering N-1 criterion |
| CN101752870A (en) * | 2010-01-29 | 2010-06-23 | 天津大学 | Method for analysis of available power supply capacity of medium voltage distribution network |
-
2015
- 2015-10-23 CN CN201510696198.6A patent/CN105205740B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101431238A (en) * | 2008-09-12 | 2009-05-13 | 天津天大求实电力新技术股份有限公司 | Power distribution network power supply capacity evaluation method considering N-1 criterion |
| CN101752870A (en) * | 2010-01-29 | 2010-06-23 | 天津大学 | Method for analysis of available power supply capacity of medium voltage distribution network |
Non-Patent Citations (2)
| Title |
|---|
| 王成山 等: "基于主变互联关系的配电系统供电能力计算方法", 《中国电机工程学报》 * |
| 肖峻 等: "基于馈线互联关系的配电网最大供电能力模型", 《电力系统自动化》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106941256A (en) * | 2017-05-07 | 2017-07-11 | 东北电力大学 | The power distribution network main transformer contact structure optimization planing method of meter and net capability and minimum contact construction cost |
| CN106941256B (en) * | 2017-05-07 | 2019-12-17 | 东北电力大学 | power distribution network main transformer contact structure optimization planning method considering MPSC and MCCC |
| CN109030933A (en) * | 2018-08-30 | 2018-12-18 | 东方电子股份有限公司 | A method of the extraction current maxima based on feeder line group |
| CN109412155A (en) * | 2018-11-16 | 2019-03-01 | 国网江苏省电力有限公司盐城供电分公司 | A kind of power distribution network evaluation of power supply capability method calculated based on figure |
| CN109412155B (en) * | 2018-11-16 | 2022-08-19 | 国网江苏省电力有限公司盐城供电分公司 | Power distribution network power supply capacity evaluation method based on graph calculation |
| CN109858672A (en) * | 2018-12-26 | 2019-06-07 | 国网江苏省电力有限公司苏州供电分公司 | Consider that regional internet turns the main adapted integration scope of power outage appraisal procedure supplied |
| CN109858672B (en) * | 2018-12-26 | 2022-07-01 | 国网江苏省电力有限公司苏州供电分公司 | Main distribution integrated power failure range assessment method considering regional interconnection and supply transfer |
| CN109754123A (en) * | 2019-01-12 | 2019-05-14 | 国网江西省电力有限公司经济技术研究院 | The distance weighted positioned alternate method of rotation centerline that feeder line supply district divides |
| CN112200410A (en) * | 2020-09-09 | 2021-01-08 | 天津大学 | Load balancing optimization method for distribution transformer cluster based on discrete monkey cluster algorithm |
| CN114552579A (en) * | 2022-04-25 | 2022-05-27 | 国网天津市电力公司电力科学研究院 | Power distribution network maximum power supply capacity calculation method considering low-voltage transformer area flexible interconnection |
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