CN103208090B - Power failure planned dispatching scheme optimization method based on overall distribution - Google Patents
Power failure planned dispatching scheme optimization method based on overall distribution Download PDFInfo
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Abstract
The invention discloses a kind of power failure planned dispatching scheme optimization method based on overall distribution, described overall distribution not only comprises traditional Distribution Network Frame, also comprises Distribution Network Load Data and distributed power source. Power failure planned dispatching scheme optimization method based on overall distribution provided by the invention, solve dispatcher when for power failure plan scheduling scheme, often only consider distribution rack present situation, can not formulate from the overall distribution angle of net, source, lotus the problem of scheduling scheme. The method takes full advantage of net, source, lotus multi-aspect information, be that scheduling scheme is formulated in power failure planning analysis from safety, economy, the aspect such as efficient, intelligent, user's power supply reliability and power supply quality are improved, improve dispatcher's scheduling level, increased economy and the security of power distribution network.
Description
Technical field
Planned dispatching scheme optimization method, especially the power failure planned dispatching scheme optimization method based on overall distribution on net, source, the integrated Optimized Operation of lotus basis the present invention relates to have a power failure.
Background technology
Along with socioeconomic development, distribution system composition and network structure become increasingly complex, the scheduling controlling of power distribution network is more and more difficult, and the production and operation cost of electric power enterprise is more and more higher, and the effectiveness of operation to electric power enterprise and the utilization ratio of the energy cause adverse effect.
Various countries improve constantly the attention degree of the energy and environmental problem, and environmental protection, renewable, distributed power generation has been subject to paying close attention to widely and having obtained fast development flexibly. Distributed power source is grid-connected has changed single supply radial networks structure, and the power swing feature of generation of electricity by new energy is obvious, and the normal operation of power distribution network is caused and had a strong impact on, also for the scheduling controlling of distribution has increased difficulty.
Workload demand constantly increases, and load type is also on the increase, consumer and power mode have also developed very large change, has also increased the load type that some can responsive electricity grid scheduling and regulate simultaneously, and these have brought new problem all to the scheduling controlling of power distribution network.
To make dispatcher be that the difficulty of power failure plan scheduling scheme has increased much in several aspects above, traditional mode by artificial experience can not adapt to the development of power distribution network, also for scheduling scheme has brought new element, possibility and the flexibility of scheduling have been increased simultaneously.
Summary of the invention
Goal of the invention: in order to improve distribution scheduling level, the invention provides a kind of power failure planned dispatching scheme optimization method based on overall distribution of intelligence, compare existing optimization method, it can utilize the overall distribution information of source, net, lotus, carry out the optimization of scheduling scheme in overall angle, improve the scheduling level of power distribution network, improve reliability and the economy of distribution.
Technical scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is:
A power failure planned dispatching scheme optimization method based on overall distribution, described overall distribution not only comprises traditional Distribution Network Frame, also comprises Distribution Network Load Data and distributed power source, this optimization method comprises the steps:
(1) from the power failure request slip of power failure plan, obtain working range and the power off time of power failure plan;
(2) according to the working range of the plan that has a power failure, formulate feasible turning solution and analyze;
(3) the contained line information of all turning solutions of combing, and the related line information of plan that has a power failure, form circuit list;
(4) all circuits in circuit list are carried out to load prediction, the time range of load prediction is the power off time of power failure plan; Obtain all circuits in circuit list peak load within that time period of power off time by load prediction;
(5) the each circuit peak load obtaining according to prediction and the safety electric flow valuve of circuit itself, according to formula: maximum current/line security current value of the circuit busy hour circuit that line load rate=prediction emulation draws, calculate each turning solution turn for after line load rate; According to line load rate, initial analysis judges each turning solution, comprises the steps:
(5-1) judge in turning solution, circuit turn for after line load rate whether lower than the relevant limit value of circuit;
If (5-2) judged result of step (5-1) is yes, circuit turn for after line load normal, can turn confession, proceed the analytical calculation of step (6);
If (5-3) judged result of step (5-1) is no, circuit turn for after line load rate out-of-limit, circuit is in the hole; Then whether judge in circuit containing distributed power source;
If (5-4) judged result of step (5-3) is no, directly carry out the analytical calculation of step (5-9);
If (5-5) judged result of step (5-3) is yes, carry out distributed power source generating prediction, formulate in power off time the power supply plan of distributed power source in circuit;
(5-6) judge that turning solution is after consideration distributed power source power supply plan, whether line load rate is lower than the relevant limit value of circuit;
If (5-7) judged result of step (5-6) is yes, considering after distributed power source power supply plan, circuit turn for after line load normal, can turn confession, proceed the analytical calculation of step (6);
If (5-8) judged result of step (5-6) is no, considering after distributed power source power supply plan, circuit turn for after line load rate still out-of-limit, proceed the analytical calculation of step (5-9);
(5-9) carry out load down analysis, can analysis be down to the load point of requirement by the line load turning after supplying, and provide load adjustment scheme; Then proceed the analytical calculation of step (6);
(6) carry out Load Characteristic Analysis, analysis turns for the part throttle characteristics of the each circuit in front and back and assesses;
(7) carry out Connection Mode analysis, analyze the Connection Mode feature the evaluation that turn for the each circuit in front and back;
(8) turning solution analysis finishes, and the result of comprehensive above-mentioned all analytical calculations, assesses all turning solutions, forms final scheme evaluation result, points out optimum turning solution.
Preferably, while carrying out load transfer program analysis, predict to wait to turn for load and turn to supply the load of circuit in following variation tendency, utilized the information on load analysis load of prediction to turn safety, the reliability of confession.
Preferably, while carrying out load transfer program analysis, utilize the burning natural gas distributed power apparatus that may exist in power distribution network, by the distributed power source prediction of generating electricity, formulate the power supply plan of distributed power source in circuit within the scope of power off time, add in load transfer scheme, thus perfect load transfer scheme, reduce amount while power failure, improve the reliability of customer power supply.
Preferably, while carrying out load transfer program analysis, utilize the variation turning for front and back line load characteristic, analyze the Beneficial Effect and the harmful effect that turn for front and back line load characteristic variations, provide assessment result.
Preferably, while carrying out load transfer program analysis, utilize the variation turning for front and back circuit Connection Mode, analyze and turn the Beneficial Effect and the harmful effect that change for front and back circuit Connection Mode, provide assessment result.
Beneficial effect: the power failure planned dispatching scheme optimization method based on overall distribution provided by the invention, solve dispatcher in the time formulating scheduling scheme, can not consider the situation of distributed power source and load aspect, there is the problem of potential safety hazard in the scheduling scheme of formulating, the scheduling level that has improved power distribution network, has reduced power off time, makes full use of clean reproducible energy, improve power supply reliability and power supply quality, improved security, reliability and the economy of power distribution network.
Brief description of the drawings
Fig. 1 is technical scheme flow chart of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
A power failure planned dispatching scheme optimization method based on overall distribution, described overall distribution not only comprises traditional Distribution Network Frame, also comprises Distribution Network Load Data and distributed power source, this optimization method comprises the steps:
(1) from the power failure request slip of power failure plan, obtain working range and the power off time of power failure plan;
(2) according to the working range of the plan that has a power failure, formulate feasible turning solution and analyze;
(3) the contained line information of all turning solutions of combing, and the related line information of plan that has a power failure, form circuit list;
(4) all circuits in circuit list are carried out to load prediction, the time range of load prediction is the power off time of power failure plan; Obtain all circuits in circuit list peak load within that time period of power off time by load prediction;
(5) the each circuit peak load obtaining according to prediction and the safety electric flow valuve of circuit itself, according to formula: maximum current/line security current value of the circuit busy hour circuit that line load rate=prediction emulation draws, calculate each turning solution turn for after line load rate; According to line load rate, initial analysis judges each turning solution, comprises the steps:
(5-1) judge in turning solution, circuit turn for after line load rate whether lower than the relevant limit value of circuit;
If (5-2) judged result of step (5-1) is yes, circuit turn for after line load normal, can turn confession, proceed the analytical calculation of step (6);
If (5-3) judged result of step (5-1) is no, circuit turn for after line load rate out-of-limit, circuit is in the hole; Then whether judge in circuit containing distributed power source;
If (5-4) judged result of step (5-3) is no, directly carry out the analytical calculation of step (5-9);
If (5-5) judged result of step (5-3) is yes, carry out distributed power source generating prediction, formulate in power off time the power supply plan of distributed power source in circuit;
(5-6) judge that turning solution is after consideration distributed power source power supply plan, whether line load rate is lower than the relevant limit value of circuit;
If (5-7) judged result of step (5-6) is yes, considering after distributed power source power supply plan, circuit turn for after line load normal, can turn confession, proceed the analytical calculation of step (6);
If (5-8) judged result of step (5-6) is no, considering after distributed power source power supply plan, circuit turn for after line load rate still out-of-limit, proceed the analytical calculation of step (5-9);
(5-9) carry out load down analysis, can analysis be down to the load point of requirement by the line load turning after supplying, and provide load adjustment scheme; Then proceed the analytical calculation of step (6);
(6) carry out Load Characteristic Analysis, analysis turns for the part throttle characteristics of the each circuit in front and back and assesses;
(7) carry out Connection Mode analysis, analyze the Connection Mode feature the evaluation that turn for the each circuit in front and back;
(8) turning solution analysis finishes, and the result of comprehensive above-mentioned all analytical calculations, assesses all turning solutions, forms final scheme evaluation result, points out optimum turning solution.
Preferably, while carrying out load transfer program analysis, predict to wait to turn for load and turn to supply the load of circuit in following variation tendency, utilized the information on load analysis load of prediction to turn safety, the reliability of confession.
Preferably, while carrying out load transfer program analysis, utilize the burning natural gas distributed power apparatus that may exist in power distribution network, by the distributed power source prediction of generating electricity, formulate the power supply plan of distributed power source in circuit within the scope of power off time, add in load transfer scheme, thus perfect load transfer scheme, reduce amount while power failure, improve the reliability of customer power supply.
Preferably, while carrying out load transfer program analysis, utilize the variation turning for front and back line load characteristic, analyze the Beneficial Effect and the harmful effect that turn for front and back line load characteristic variations, provide assessment result.
Preferably, while carrying out load transfer program analysis, utilize the variation turning for front and back circuit Connection Mode, analyze and turn the Beneficial Effect and the harmful effect that change for front and back circuit Connection Mode, provide assessment result.
In the time formulating power failure planned dispatching scheme, analyze and wait to turn for load and turn load for circuit in following variation tendency, treat turning for load and turning for the load on circuit and carry out load prediction, analyze in power off time the variation characteristic of load. After supplying if turn, turn the safety limit that has exceeded circuit for the load on circuit, need to carry out distributed power source analysis and load down analysis.
Carry out distributed power source analysis for the scheduling scheme that does not meet safety limit, if have distributed power source in the distribution line that scheduling scheme relates to, preferentially select distributed power source power supply, by the distributed power source prediction of generating electricity, formulate in power off time, the power supply plan of distributed power source in circuit, reduces power off time.
For not meeting safety limit again not containing the scheduling scheme of distributed power source, and because the reasons such as the power supply capacity deficiency of distributed power source cause the scheduling scheme that does not still meet safety limit after having considered distributed power source power supply, carry out load down analysis, deferrable load situation in analysis circuit, according to certain policy optimization adjustment load.
For the scheduling scheme that meets safety limit, it is carried out to Load Characteristic Analysis, analysis turns the ratio situation for the each circuit in front and back topmost two type loads, and load peak-valley difference situation, according to exist between each type load complementary and turn for the situation of change of front and back circuit peak valley and provide evaluation.
For the scheduling scheme that meets safety limit, it is carried out to Connection Mode analysis, analyze the Connection Mode situation turning for circuit in rear scheduling scheme, preferential selection turns the scheduling scheme higher for the power supply reliability of rear Connection Mode and provides evaluation.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. the power failure planned dispatching scheme optimization method based on overall distribution, is characterized in that: described overall distribution not only comprises traditional Distribution Network Frame, also comprises Distribution Network Load Data and distributed power source, and this optimization method comprises the following steps:
(1) from the power failure request slip of power failure plan, obtain working range and the power off time of power failure plan;
(2) according to the working range of the plan that has a power failure, formulate feasible turning solution and analyze;
(3) the contained line information of all turning solutions of combing, and the related line information of plan that has a power failure, form circuit list;
(4) all circuits in circuit list are carried out to load prediction, the time range of load prediction is the power off time of power failure plan; Obtain all circuits in circuit list peak load within that time period of power off time by load prediction;
(5) the each circuit peak load obtaining according to prediction and the safety electric flow valuve of circuit itself, according to formula: maximum current/line security current value of the circuit busy hour circuit that line load rate=prediction emulation draws, calculate each turning solution turn for after line load rate; According to line load rate, initial analysis judges each turning solution, comprises the steps:
(5-1) judge in turning solution, circuit turn for after line load rate whether lower than the relevant limit value of circuit;
If (5-2) judged result of step (5-1) is yes, circuit turn for after line load normal, can turn confession, proceed the analytical calculation of step (6);
If (5-3) judged result of step (5-1) is no, circuit turn for after line load rate out-of-limit, circuit is in the hole; Then whether judge in circuit containing distributed power source;
If (5-4) judged result of step (5-3) is no, directly carry out the analytical calculation of step (5-9);
If (5-5) judged result of step (5-3) is yes, carry out distributed power source generating prediction, formulate in power off time the power supply plan of distributed power source in circuit;
(5-6) judge that turning solution is after consideration distributed power source power supply plan, whether line load rate is lower than the relevant limit value of circuit;
If (5-7) judged result of step (5-6) is yes, considering after distributed power source power supply plan, circuit turn for after line load normal, can turn confession, proceed the analytical calculation of step (6);
If (5-8) judged result of step (5-6) is no, considering after distributed power source power supply plan, circuit turn for after line load rate still out-of-limit, proceed the analytical calculation of step (5-9);
(5-9) carry out load down analysis, can analysis be down to the load point of requirement by the line load turning after supplying, and provide load adjustment scheme; Then proceed the analytical calculation of step (6);
(6) carry out Load Characteristic Analysis, analysis turns for the part throttle characteristics of the each circuit in front and back and assesses;
(7) carry out Connection Mode analysis, analyze the Connection Mode feature the evaluation that turn for the each circuit in front and back;
(8) turning solution analysis finishes, and the result of comprehensive above-mentioned all analytical calculations, assesses all turning solutions, forms final scheme evaluation result, points out optimum turning solution.
2. the power failure planned dispatching scheme optimization method based on overall distribution according to claim 1, it is characterized in that: while carrying out turning solution analysis, predict to wait to turn for load and turn to supply the load of circuit in following variation tendency, utilized the information on load analysis load of prediction to turn safety, the reliability of confession.
3. the power failure planned dispatching scheme optimization method based on overall distribution according to claim 1, it is characterized in that: while carrying out turning solution analysis, utilize the burning natural gas distributed power apparatus that may exist in power distribution network, by the distributed power source prediction of generating electricity, formulate the power supply plan of distributed power source in circuit within the scope of power off time, add in load transfer scheme, thus perfect load transfer scheme, reduce amount while power failure, improve the reliability of customer power supply.
4. the power failure planned dispatching scheme optimization method based on overall distribution according to claim 1, it is characterized in that: while carrying out turning solution analysis, utilization turns the variation for front and back line load characteristic, analysis turns Beneficial Effect and the harmful effect for front and back line load characteristic variations, provides assessment result.
5. the power failure planned dispatching scheme optimization method based on overall distribution according to claim 1, it is characterized in that: while carrying out turning solution analysis, utilization turns the variation for front and back circuit Connection Mode, analysis turns the Beneficial Effect and the harmful effect that change for front and back circuit Connection Mode, provides assessment result.
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| CN106385027B (en) * | 2016-10-12 | 2019-03-15 | 国网重庆市电力公司电力科学研究院 | Method and system are determined based on the medium voltage distribution network maintenance solution of reliability assessment |
| CN108491960A (en) * | 2018-02-11 | 2018-09-04 | 广东电网有限责任公司佛山供电局 | A kind of power distribution network power failure optimal case appraisal procedure |
| 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 |
| CN109301825B (en) * | 2018-12-03 | 2022-05-17 | 北京科东电力控制系统有限责任公司 | Load transfer method and device of power distribution network, terminal equipment and storage medium |
| CN112186746A (en) * | 2020-09-18 | 2021-01-05 | 国网山东省电力公司淄博供电公司 | Method suitable for rapid load transfer of distribution network line of transformer substation |
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| CN102542355A (en) * | 2011-11-19 | 2012-07-04 | 国网电力科学研究院 | Operation planning part load method |
| CN102545210A (en) * | 2011-12-29 | 2012-07-04 | 广东电网公司深圳供电局 | Method and system for optimizing and regulating distribution network power supply reliability indexes |
| CN102999792A (en) * | 2012-12-20 | 2013-03-27 | 诸暨市供电局 | Method for comprehensive evaluation of power distribution network optimization allocation |
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| JP2012034443A (en) * | 2010-07-28 | 2012-02-16 | Toshiba Corp | Power distribution system monitoring control system |
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| CN102542355A (en) * | 2011-11-19 | 2012-07-04 | 国网电力科学研究院 | Operation planning part load method |
| CN102496068A (en) * | 2011-12-04 | 2012-06-13 | 江苏省电力公司南京供电公司 | Power supply scheme auxiliary generation method based on GIS (geographic information system) |
| CN102545210A (en) * | 2011-12-29 | 2012-07-04 | 广东电网公司深圳供电局 | Method and system for optimizing and regulating distribution network power supply reliability indexes |
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