CN104242446B - 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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- CN104242446B CN104242446B CN201410326923.6A CN201410326923A CN104242446B CN 104242446 B CN104242446 B CN 104242446B CN 201410326923 A CN201410326923 A CN 201410326923A CN 104242446 B CN104242446 B CN 104242446B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 24
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- 230000035699 permeability Effects 0.000 title claims abstract description 16
- 238000005457 optimization Methods 0.000 claims abstract description 13
- 238000004458 analytical method Methods 0.000 claims abstract description 9
- 238000010248 power generation Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
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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
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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 electrical
Source interconnection technology field.
Background technology
With the appearance execution of national Eleventh Five-Year Development Plan planning, energy-saving and emission-reduction, changing energy resource structure has become national energy
Source strategic development inexorable trend.Under such overall background, the development of distributed power source has become inevitable, at present, distributed power source
After extensive access power distribution network, to the relay protection scheme of power distribution network, electrical power distribution automatization system application of function, the quality of power supply, show
The impact of field job safety etc. will highlight, and study and propose the distribution in the case of high permeability distributed power source accesses and run
Monitoring technology, according to various places practical situation, is scheduled that the special project pilot study work of correlation distribution formula power grid in advance, builds
The distributed power source differing from one another and micro-capacitance sensor demonstration system, have technically carried out one to distributed power source and its interconnection technology
Fixed research, is very necessary.
International Electrotechnical Commission (iec), according to different distributions formula power supply type, formulates technical standard respectively.As wind-power electricity generation
Technical standard, photovoltaic generation and fuel cell technology standard, and ieee 1547 is applied to all types distributed power source, to it
Performance, run the aspects such as monitoring, test, safety and propose requirement, summarize both at home and abroad with regard to standard gauge that distributed power source is grid-connected
Model, Grid-connection standards and requirement generally comprise: general requirement, safety and protection require and the quality of power supply three aspects of requirement.
At present, in distribution automation field with " Distribution Automation Technology directive/guide " for commander, engineering philosophy, construction are covered
Several aspects such as transformation, lectotype selection, the project acceptance inspection, detection examination, operation maintenance, have defined fairly perfect standard system
Row, Series Standard of Distribution automation has contemplated that and has reserved distributed power source Function Extension, at " Distribution Automation Technology directive/guide "
Etc. the access of clear and definite distributed power source in standard and application as intelligent expanded function, but do not do thoroughgoing and painstaking and systemic
Elaboration, still need in concrete operations and execution aspect clear and definite further.
Content of the invention
The purpose of the present invention be overcome existing distributed power source to access power distribution network on a large scale after, the relay of power distribution network is protected
Shield configuration, the impact of electrical power distribution automatization system application of function, the quality of power supply, field work safe etc. will highlight, not deeply
The reference frame of research.The active distribution network operation and monitoring method of the 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, method clearly may be used
Lean on, have a good application prospect.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of active distribution network operation and monitoring method of high permeability distributed power source it is characterised in that: include following walking
Suddenly,
Step (1), increases the monitoring to 10kv high-pressure side grid entry point, the distributed power source access information of 380v low-pressure side,
Be incorporated into the power networks information including Real-time Collection distributed power source, monitoring wind-power electricity generation, photovoltaic generation, energy storage, header box, low-voltage cabinet and
The status data of grid entry point；
Step (2), by step (1), the operation information monitored, status data are uploaded to distribution main website, and to possessing controlled bar
Division control realized by the distributed electrical source switch of part, grid entry point switch, according to the operation information of distributed power source, carries out distributed
The scheduling controlling of power supply and switching management；
Step (3), the distribution network voltage idle work optimization containing distributed power source for the extension；
Step (4), extension distributed power source generation schedule scheduling and power-balance analysis.
The active distribution network operation and monitoring method of aforesaid high permeability distributed power source it is characterised in that: step (1) is real
When collection distributed power source be incorporated into the power networks information, have including grid entry point on off state, grid entry point voltage and current, distributed power source
Work(power and reactive power and distributed power source generated energy.
The active distribution network operation and monitoring method of aforesaid high permeability distributed power source it is characterised in that: step (3),
The method of the distribution network voltage idle work optimization containing distributed power source for the extension, comprises the following steps,
(1), set up the mathematical model of the distribution idle work optimization containing distributed power source, with loss minimization as object function, join
The voltage magnitude of net node fluctuates as constraints, obtains the most preferably idle of distributed power source and exerts oneself；
(2) select optimal installation node and the installed capacity of reactive power compensator, realize the power distribution network containing distributed power source
Voltage and reactive power optimization.
The active distribution network operation and monitoring method of aforesaid high permeability distributed power source it is characterised in that: step (4),
Extension distributed power source generation schedule scheduling and the method for power-balance analysis, comprise the following steps,
(1) current operating conditions according to distribution, in conjunction with the generating prediction of distributed power source, when formulating each in dispatching cycle
The power control strategy of section, forms the power generation dispatching plan in the dispatching cycle, is handed down to distribution by simultaneously web interface apparatus
The operation controller execution of formula power supply；
(2) the corresponding control command of the operation controller of distributed power source, and implementation status is fed back to distribution main website；
(3) situation that distribution main website responds power generation dispatching plan to distributed power source is monitored according to the cycle and is checked.
The invention has the beneficial effects as follows: the active distribution network of the high permeability distributed power source of the present invention runs monitoring side
Method, accesses the present situation of distributed power source on a large scale for power distribution network, in conjunction with towards power distribution network safety and stability, the quality of power supply, scheduling
The the researching and analysing and requiring of business, the impact to power distribution network for the analysis distribution formula plant-grid connection such as run, specify distributed power source big
The key issue that scale is brought to power distribution network after accessing, in the case of providing the access of high permeability distributed power source, distribution runs prison
The new content of control information and expanded function, can make distribution run the extensive access adapting to distributed power source, and satisfaction point
The various standard criterions of cloth power grid, method is clearly reliable, has a good application prospect.
Brief description
Fig. 1 is the flow chart of the active distribution network operation and monitoring method of the high permeability distributed power source of the present invention.
Fig. 2 is the extension distributed power source generation schedule scheduling of the present invention and the flow chart of power-balance analysis.
Specific embodiment
Below in conjunction with Figure of description, the invention will be further described.Following examples are only used for clearly
Technical scheme is described, and can not be limited the scope of the invention with this.
The active distribution network operation and monitoring method of the high permeability distributed power source of the present invention, can make distribution run and adapt to
The extensive access of distributed power source, and meet the grid-connected various standard criterions of distributed power source, as shown in figure 1, including following
Step,
Step (1), increases the monitoring to 10kv high-pressure side grid entry point, the distributed power source access information of 380v low-pressure side,
Be incorporated into the power networks information including Real-time Collection distributed power source, monitoring wind-power electricity generation, photovoltaic generation, energy storage, header box, low-voltage cabinet and
The status data of grid entry point, Real-time Collection distributed power source is incorporated into the power networks information, including grid entry point on off state, grid-connected point voltage
With electric current, distributed power source active power and reactive power and distributed power source generated energy, concrete increase to 10kv high-pressure side
Grid entry point, the monitoring variable of the distributed power source access information of 380v low-pressure side, as shown in table 1 below,
Table 110kv high-pressure side grid entry point, the distributed power source of 380v low-pressure side access increased monitoring variable
Step (2), by step (1), the operation information monitored, status data are uploaded to distribution main website, and to possessing controlled bar
Division control realized by the distributed electrical source switch of part, grid entry point switch, according to the operation information of distributed power source, carries out distributed
The scheduling controlling of power supply and switching management；
Step (3), the distribution network voltage idle work optimization containing distributed power source for the extension, it is understood that distributed power source is grid-connected
Afterwards, can make to increase along the voltage at each load bus of feeder line, or even the voltage of some nodes can exceed the upper limit, to
Family produces impact；The throwing of distributed power source is moved back, and also results in feeder voltage fluctuation, after distributed power source is grid-connected, can only be certain
The idle not enough of power distribution network improved on degree and some distributed power sources not only to be provided that reactive power can consume on the contrary idle
Power, the idle work optimization of the power distribution network containing distributed power source realizes distribution node voltage on rule using suitably idle control program
Determine in scope, the reactive power source being specifically included in suitable node location installation suitable capacity carries out reactive-load compensation to reduce system
Network loss and the complex optimal controlled strategy to reactive power compensator, realize comprising the following steps,
(1), set up the mathematical model of the distribution idle work optimization containing distributed power source, with loss minimization as object function, join
The voltage magnitude of net node fluctuates as constraints, obtains the most preferably idle of distributed power source and exerts oneself；
(2) select optimal installation node and the installed capacity of reactive power compensator, realize the power distribution network containing distributed power source
Voltage and reactive power optimization；
Step (4), extension distributed power source generation schedule scheduling and power-balance analysis, it is understood that distributed power source is big
Scale is grid-connected, and in the case of high permeability, distributed power source planned dispatching and power-balance analysis are exerted oneself in view of distributed power source
Erratic behavior, in conjunction with prediction and the load prediction of generating electricity, with region electric quantity balancing as principle, as shown in Fig. 2 including following walking
Suddenly,
(1) current operating conditions according to distribution, in conjunction with the generating prediction of distributed power source, when formulating each in dispatching cycle
The power control strategy of section, forms the power generation dispatching plan in the dispatching cycle, is handed down to distribution by simultaneously web interface apparatus
The operation controller execution of formula power supply；
(2) the corresponding control command of the operation controller of distributed power source, and implementation status is fed back to distribution main website；
(3) situation that distribution main website responds power generation dispatching plan to distributed power source is monitored according to the cycle and is checked.
Ultimate principle, principal character and the advantage of the present invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not restricted to the described embodiments, the simply explanation present invention's described in above-described embodiment and description is former
Reason, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes and improvements
Both fall within scope of the claimed invention.Claimed scope is by appending claims and its equivalent circle.
Fixed.
Claims (1)
1. high permeability distributed power source active distribution network operation and monitoring method it is characterised in that: comprise the following steps,
Step (1), increases the monitoring to 10kv high-pressure side grid entry point, the distributed power source access information of 380v low-pressure side, including
Real-time Collection distributed power source is incorporated into the power networks information, monitoring wind-power electricity generation, photovoltaic generation, energy storage, header box, low-voltage cabinet and grid-connected
The status data of point；
Step (2), by step (1), the operation information monitored, status data are uploaded to distribution main website, and to possessing controlled condition
Division control realized by distributed electrical source switch, grid entry point switch, according to the operation information of distributed power source, carries out distributed power source
Scheduling controlling and switching management；
Step (3), the distribution network voltage idle work optimization containing distributed power source for the extension；
Step (4), extension distributed power source generation schedule scheduling and power-balance analysis；
Wherein, described step (1) Real-time Collection distributed power source is incorporated into the power networks information, including grid entry point on off state, grid entry point
Voltage and current, distributed power source active power and reactive power and distributed power source generated energy；
Described step (3), the method for the distribution network voltage idle work optimization containing distributed power source for the extension, comprise the following steps,
(1) mathematical model of the distribution idle work optimization containing distributed power source, with loss minimization as object function, distribution section, are set up
The voltage magnitude of point fluctuates as constraints, obtains the most preferably idle of distributed power source and exerts oneself；
(2) select optimal installation node and the installed capacity of reactive power compensator, realize the distribution network voltage containing distributed power source
Idle work optimization；
Described step (4), the method for extension distributed power source generation schedule scheduling and power-balance analysis, comprise the following steps,
(1) current operating conditions according to distribution, in conjunction with the generating prediction of distributed power source, formulate day part in dispatching cycle
Power control strategy, forms the power generation dispatching plan in the dispatching cycle, is handed down to distributed electrical by simultaneously web interface apparatus
The operation controller execution in 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) situation that distribution main website responds power generation dispatching plan to distributed power source is monitored according to the cycle and is checked.
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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 |
| CN104953706B (en) * | 2015-04-07 | 2017-11-10 | 国家电网公司 | A kind of intelligence matches somebody with somebody the integrated information interacting method of electricity consumption |
| 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 |
| 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 |
| 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 |
| CN107069738B (en) * | 2016-10-25 | 2019-08-06 | 南京工程学院 | A kind of DC distribution cable road voltage control method based on grid entry point trend |
| 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 |
| CN107317341B (en) * | 2017-07-14 | 2020-06-12 | 国网辽宁省电力有限公司 | Method for realizing plug and play of distributed power supply connected to power distribution network |
| CN108459238B (en) * | 2018-02-28 | 2019-12-13 | 山东大学 | Distributed power grid state sensing device for energy storage |
| 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 |
| 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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| CN103441531B (en) * | 2013-09-10 | 2015-04-29 | 上海电力学院 | Area high-permeability photovoltaic energy storage system and energy management method thereof |
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