CN104242446A - Active distribution network operation monitoring and controlling method for distributed power supplies high in permeability - Google Patents
Active distribution network operation monitoring and controlling method for distributed power supplies high in permeability Download PDFInfo
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- CN104242446A CN104242446A CN201410326923.6A CN201410326923A CN104242446A CN 104242446 A CN104242446 A CN 104242446A CN 201410326923 A CN201410326923 A CN 201410326923A CN 104242446 A CN104242446 A CN 104242446A
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- 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 an active distribution network operation monitoring and controlling method for distributed power supplies high in permeability. The method comprises the following steps that (1) monitoring of access information of grid connection points on the 10kV high-voltage side and the distributed power supplies on the 380V low-voltage side is enhanced; (2) operation information is uploaded to a distribution network master station, and scheduling control and switching management of the distributed power supplies are conducted; (3) voltage reactive power optimization of a distribution network containing the distributed power supplies is expanded; (4) generation plan scheduling and power balance analysis of the distributed power supplies are expanded. Operation of the distribution network can be adapted to large-scale access of the distributed power supplies, various standard specifications of grid connection of the distributed power supplies are met, and the method is clear and reliable and has good application prospects.
Description
Technical field
The present invention relates to a kind of active distribution network operation and monitoring method of high permeability distributed power source, belong to distributed power source interconnection technology field.
Background technology
The appearance planned along with national Eleventh Five-Year Development Plan performs, and energy-saving and emission-reduction, transition energy source structure has become national energy strategic development inexorable trend.Under such overall background, the development of distributed power source has become inevitable, at present, after distributed power source accesses power distribution network on a large scale, to the relay protection scheme of power distribution network, electrical power distribution automatization system function is applied, the quality of power supply, the impact of field work safe etc. will highlight, study and distribution operation monitoring technology under proposing high permeability distributed power source access situation, according to various places actual conditions, arrange the special pilot study work of correlation distribution formula power grid in advance, the distributed power source and micro-capacitance sensor demonstration system that differ from one another are built, technically certain research is carried out to distributed power source and interconnection technology thereof, very necessary.
International Electrotechnical Commission (IEC), according to different distributions formula power supply type, formulates technical standard respectively.As wind generating technology standard; photovoltaic generation and fuel cell technology standard; and IEEE 1547 is applicable to all types distributed power source; requirement is proposed to aspects such as its performance, operation monitoring, test, safety; sum up grid-connected about distributed power source standard criterion both at home and abroad; Grid-connection standards and requirement generally comprise: General Requirements, and safety and protection require and the quality of power supply requires three aspects.
At present, in power distribution automation field with " Distribution Automation Technology directive/guide " for commander, contain engineering philosophy, construction retrofit, lectotype selection, the project acceptance inspection, detect and check and accept, several aspect such as operation maintenance, define fairly perfect standard series, Series Standard of Distribution automation has been considered and has been reserved distributed power source Function Extension, in standards such as " Distribution Automation Technology directive/guides " clear and definite distributed power source access and application as intelligent expanded function, but do not do thoroughgoing and painstaking and systematic elaboration, still need in concrete operations and execution aspect and want clear and definite further.
Summary of the invention
The object of the invention is to overcome after existing distributed power source accesses power distribution network on a large scale; will highlight the impact of the relay protection scheme, the application of electrical power distribution automatization system function, the quality of power supply, field work safe etc. of power distribution network, there is no the reference frame furtherd investigate.The active distribution network operation and monitoring method of high permeability distributed power source of the present invention, distribution can be made to run the extensive access adapting to distributed power source, and meeting the grid-connected various standard criterions of distributed power source, method is reliably clear, has a good application prospect.
In order to achieve the above object, the technical solution adopted in the present invention is:
An active distribution network operation and monitoring method for high permeability distributed power source, is characterized in that: comprise the following steps,
Step (1), increase 10kV high-pressure side and the monitoring of the distributed power source access information of site, 380V low-pressure side, comprise Real-time Collection distributed power source to be incorporated into the power networks information, monitoring wind power generation, photovoltaic generation, energy storage, header box, low-voltage cabinet and and the status data of site;
Step (2), the operation information of step (1) being monitored, status data are uploaded to distribution main website, and to possessing the distributed electrical source switch of controlled condition and site switch realizes deciliter controlling, according to the operation information of distributed power source, carry out scheduling controlling and the switching management of distributed power source;
Step (3), expansion is containing the distribution network voltage idle work optimization of distributed power source;
Step (4), the generation schedule scheduling of expansion distributed power source and power-balance analysis.
The active distribution network operation and monitoring method of aforesaid high permeability distributed power source, it is characterized in that: step (1) Real-time Collection distributed power source is incorporated into the power networks information, comprise and site on off state, grid-connected point voltage and electric current, distributed power source active power and reactive power and distributed power source energy output.
The active distribution network operation and monitoring method of aforesaid high permeability distributed power source, is characterized in that: step (3), and expansion, containing the method for the distribution network voltage idle work optimization of distributed power source, comprises the following steps,
(1), setting up the Mathematical Modeling of distribution idle work optimization containing distributed power source, take loss minimization as target function, and the voltage magnitude fluctuation of distribution node is constraints, obtains that the best of distributed power source is idle exerts oneself;
(2) select the best of reactive power compensator that node and installed capacity are installed, realize the distribution network voltage idle work optimization containing distributed power source.
The active distribution network operation and monitoring method of aforesaid high permeability distributed power source, is characterized in that: step (4), the method that the generation schedule scheduling of expansion distributed power source and power-balance are analyzed, and comprises the following steps,
(1) according to the current operating conditions of distribution, generating in conjunction with distributed power source is predicted, formulate the power control strategy of day part in dispatching cycle, form the power generation dispatching plan in the dispatching cycle, by and web interface apparatus is handed down to the operation controller execution of distributed power source;
(2) the corresponding control command of the operation controller of distributed power source, and implementation status is fed back to distribution main website;
(3) distribution main website to monitor according to the cycle the situation of distributed power source response power generation dispatching plan and checks.
The invention has the beneficial effects as follows: the active distribution network operation and monitoring method of high permeability distributed power source of the present invention, the present situation of distributed power source is accessed on a large scale for power distribution network, faying face is to power distribution network safety and stability, the quality of power supply, researching and analysing and requirement of the business such as management and running, analysis distribution formula plant-grid connection is on the impact of power distribution network, specify the key issue brought to power distribution network after distributed power source accesses on a large scale, under providing high permeability distributed power source access situation, the new content of distribution operation monitoring information and expanded function, distribution can be made to run the extensive access adapting to distributed power source, and meet the grid-connected various standard criterions of distributed power source, method is reliably clear, have a good application prospect.
Accompanying drawing explanation
Fig. 1 is the flow chart of the active distribution network operation and monitoring method of high permeability distributed power source of the present invention.
Fig. 2 is the flow chart that expansion distributed power source generation schedule of the present invention scheduling and power-balance are analyzed.
Embodiment
Below in conjunction with Figure of description, 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 active distribution network operation and monitoring method of high permeability distributed power source of the present invention, can make distribution run the extensive access adapting to distributed power source, and meet the grid-connected various standard criterions of distributed power source, as shown in Figure 1, comprise the following steps,
Step (1), increase 10kV high-pressure side and site, the monitoring of the distributed power source access information of 380V low-pressure side, comprise Real-time Collection distributed power source to be incorporated into the power networks information, monitoring wind power generation, photovoltaic generation, energy storage, header box, the status data of low-voltage cabinet and also site, Real-time Collection distributed power source is incorporated into the power networks information, comprise and site on off state, grid-connected point voltage and electric current, distributed power source active power and reactive power and distributed power source energy output, concrete increase to 10kV high-pressure side and site, the monitoring variable of the distributed power source access information of 380V low-pressure side, as shown in table 1 below,
Show 110kV high-pressure side and the monitoring variable of the distributed power source of site, 380V low-pressure side access increase
Step (2), the operation information of step (1) being monitored, status data are uploaded to distribution main website, and to possessing the distributed electrical source switch of controlled condition and site switch realizes deciliter controlling, according to the operation information of distributed power source, carry out scheduling controlling and the switching management of distributed power source;
Step (3), expansion, containing the distribution network voltage idle work optimization of distributed power source, after we know that distributed power source is grid-connected, can make the voltage at each load bus place along feeder line increase, even the voltage of some node can exceed the upper limit, has an impact to user, the throwing of distributed power source is moved back, also feeder voltage can be caused to fluctuate, after distributed power source is grid-connected, the idle deficiency of power distribution network can only be improved to a certain extent and some distributed power source not only can not provide reactive power on the contrary can consume reactive power, idle work optimization containing the power distribution network of distributed power source adopts suitable idle control program to realize distribution node voltage in prescribed limit, the reactive power source being specifically included in suitable node location installation suitable capacity carries out reactive power compensation to reduce system losses and the complex optimal controlled strategy to reactive power compensator, realization comprises the following steps,
(1), setting up the Mathematical Modeling of distribution idle work optimization containing distributed power source, take loss minimization as target function, and the voltage magnitude fluctuation of distribution node is constraints, obtains that the best of distributed power source is idle exerts oneself;
(2) select the best of reactive power compensator that node and installed capacity are installed, realize the distribution network voltage idle work optimization containing distributed power source;
Step (4), the generation schedule scheduling of expansion distributed power source and power-balance analysis, we know distributed power source large-scale grid connection, in high permeability situation, the erratic behavior that distributed power source is exerted oneself is considered in distributed power source planned dispatching and power-balance analysis, in conjunction with generating prediction and load prediction, with region electric quantity balancing for principle, as shown in Figure 2, comprise the following steps
(1) according to the current operating conditions of distribution, generating in conjunction with distributed power source is predicted, formulate the power control strategy of day part in dispatching cycle, form the power generation dispatching plan in the dispatching cycle, by and web interface apparatus is handed down to the operation controller execution of distributed power source;
(2) the corresponding control command of the operation controller of distributed power source, and implementation status is fed back to distribution main website;
(3) distribution main website to monitor according to the cycle the situation of distributed power source response power generation dispatching plan and checks.
More than show and describe general principle of the present invention, principal character and advantage.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (4)
1. the active distribution network operation and monitoring method of high permeability distributed power source, is characterized in that: comprise the following steps,
Step (1), increase 10kV high-pressure side and the monitoring of the distributed power source access information of site, 380V low-pressure side, comprise Real-time Collection distributed power source to be incorporated into the power networks information, monitoring wind power generation, photovoltaic generation, energy storage, header box, low-voltage cabinet and and the status data of site;
Step (2), the operation information of step (1) being monitored, status data are uploaded to distribution main website, and to possessing the distributed electrical source switch of controlled condition and site switch realizes deciliter controlling, according to the operation information of distributed power source, carry out scheduling controlling and the switching management of distributed power source;
Step (3), expansion is containing the distribution network voltage idle work optimization of distributed power source;
Step (4), the generation schedule scheduling of expansion distributed power source and power-balance analysis.
2. the active distribution network operation and monitoring method of high permeability distributed power source according to claim 1, it is characterized in that: step (1) Real-time Collection distributed power source is incorporated into the power networks information, comprise and site on off state, grid-connected point voltage and electric current, distributed power source active power and reactive power and distributed power source energy output.
3. the active distribution network operation and monitoring method of high permeability distributed power source according to claim 1, is characterized in that: step (3), and expansion, containing the method for the distribution network voltage idle work optimization of distributed power source, comprises the following steps,
(1), setting up the Mathematical Modeling of distribution idle work optimization containing distributed power source, take loss minimization as target function, and the voltage magnitude fluctuation of distribution node is constraints, obtains that the best of distributed power source is idle exerts oneself;
(2) select the best of reactive power compensator that node and installed capacity are installed, realize the distribution network voltage idle work optimization containing distributed power source.
4. the active distribution network operation and monitoring method of high permeability distributed power source according to claim 1, is characterized in that: step (4), the method that the generation schedule scheduling of expansion distributed power source and power-balance are analyzed, and comprises the following steps,
(1) according to the current operating conditions of distribution, generating in conjunction with distributed power source is predicted, formulate the power control strategy of day part in dispatching cycle, form the power generation dispatching plan in the dispatching cycle, by and web interface apparatus is handed down to the operation controller execution of distributed power source;
(2) the corresponding control command of the operation controller of distributed power source, and implementation status is fed back to distribution main website;
(3) distribution main website to monitor according to the cycle the situation of distributed power source response power generation dispatching plan and checks.
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| CN104953716A (en) * | 2015-07-30 | 2015-09-30 | 国网上海市电力公司 | Local area distributed photovoltaic power supply monitoring system |
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| CN106487093A (en) * | 2016-10-24 | 2017-03-08 | 国家电网公司 | Towards distribution net side distributed photovoltaic integrated operation control system and control method |
| CN106684880A (en) * | 2016-10-28 | 2017-05-17 | 黑龙江省电力科学研究院 | Low-voltage electricity-consumption-area reactive voltage combined adjusting method |
| CN106856331A (en) * | 2015-12-09 | 2017-06-16 | 中国电力科学研究院 | A kind of grid-connected performance test methods of wind-light combined power generation system |
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| CN104753061B (en) * | 2015-03-05 | 2017-01-11 | 中国农业大学 | Distributed type power supply accessed into power distribution network and microgrid group zone control method and microgrid group zone control system |
| CN104753061A (en) * | 2015-03-05 | 2015-07-01 | 中国农业大学 | Distributed type power supply accessed into power distribution network and microgrid group zone control method and microgrid group zone control system |
| CN104953706A (en) * | 2015-04-07 | 2015-09-30 | 国家电网公司 | Integrative information interaction method for intelligent power distribution and utilization |
| CN104934972A (en) * | 2015-06-14 | 2015-09-23 | 浙江大学 | Active tide control power grid and control method of power exchange power node and medium-voltage distribution network |
| CN104934972B (en) * | 2015-06-14 | 2017-05-31 | 浙江大学 | Power Exchange node and medium voltage distribution network active power flowcontrol power network and control method |
| CN104953716A (en) * | 2015-07-30 | 2015-09-30 | 国网上海市电力公司 | Local area distributed photovoltaic power supply monitoring system |
| CN106856331B (en) * | 2015-12-09 | 2020-10-13 | 中国电力科学研究院 | Grid-connected performance testing method for wind-solar combined power generation system |
| CN106856331A (en) * | 2015-12-09 | 2017-06-16 | 中国电力科学研究院 | A kind of grid-connected performance test methods of wind-light combined power generation system |
| CN106058919B (en) * | 2016-06-02 | 2018-07-06 | 清华大学 | Towards the chain off-grid path discrimination method of new energy power station of new energy collection region |
| CN106058919A (en) * | 2016-06-02 | 2016-10-26 | 清华大学 | New energy collection region-oriented method for identifying linked off-network path of new energy power stations |
| CN106487093B (en) * | 2016-10-24 | 2019-07-16 | 国家电网公司 | Towards distribution net side distributed photovoltaic integrated operation control system and control method |
| CN106487093A (en) * | 2016-10-24 | 2017-03-08 | 国家电网公司 | Towards distribution net side distributed photovoltaic integrated operation control system and control method |
| CN107069738A (en) * | 2016-10-25 | 2017-08-18 | 南京工程学院 | A kind of DC distribution netting twine road voltage control method based on grid entry point trend |
| CN106684880A (en) * | 2016-10-28 | 2017-05-17 | 黑龙江省电力科学研究院 | Low-voltage electricity-consumption-area reactive voltage combined adjusting method |
| CN106684880B (en) * | 2016-10-28 | 2019-10-08 | 黑龙江省电力科学研究院 | About low-voltage electricity consumption area reactive voltage method for adjusting combined |
| CN107317341A (en) * | 2017-07-14 | 2017-11-03 | 国网辽宁省电力有限公司 | It is a kind of to realize the method that distributed power source accesses power distribution network plug and play |
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| CN108459238A (en) * | 2018-02-28 | 2018-08-28 | 山东大学 | A kind of distributed energy storage electric network state sensing device |
| CN109100585A (en) * | 2018-06-21 | 2018-12-28 | 兰州理工大学 | A kind of Terminal Substation monitoring system based on the LoRa communication technology |
| CN114498936A (en) * | 2022-02-11 | 2022-05-13 | 国网江苏省电力有限公司电力科学研究院 | Distributed power supply regulation and control system, method and device |
| CN114498936B (en) * | 2022-02-11 | 2024-02-23 | 国网江苏省电力有限公司电力科学研究院 | Distributed power supply regulation and control system, method and device |
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