CN105119295A - Power supply system with reactive compensation function - Google Patents
Power supply system with reactive compensation function Download PDFInfo
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- CN105119295A CN105119295A CN201510658622.8A CN201510658622A CN105119295A CN 105119295 A CN105119295 A CN 105119295A CN 201510658622 A CN201510658622 A CN 201510658622A CN 105119295 A CN105119295 A CN 105119295A
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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
Abstract
The invention discloses a power supply system. The power supply system comprises a master dispatching station, a plant station, power transmission lines, a first centralized reactive compensation device, a second centralized reactive compensation device and a distribution unit-area, wherein the power transmission lines comprise a first power transmission line for connecting the master dispatching station and the plant station as well as a second power transmission line for connecting the plant station and the distribution unit-area; the first centralized reactive compensation device is connected with the master dispatching station; the second centralized reactive compensation device is connected with the plant station. According to the power supply system, the master dispatching station is provided with the first centralized reactive compensation device which is used for stabilizing the terminal voltage of the master dispatching station, the second centralized reactive compensation device is arranged at the plant station and used for stabilizing the terminal voltage of the plant station, so that the problem of low voltage caused by reactive power in the power supply system is greatly solved, and the voltage stability of the power supply system is guaranteed.
Description
Technical field
The present invention relates to power transmission technology field, particularly relate to a kind of electric power system with no-power compensation function.
Background technology
Along with the fast development of China's rural economy and the speed-raising of new countryside construction, in man of peasant household, electrical equipment kind gets more and more, some of them electrical equipment, comprise fluorescent lamp, carry out work according to electromagnetic induction principle, just need consume reactive power to set up magnetic field, in addition, the powerful device such as asynchronous motor, A.C. welder can be used in township enterprise, also be the electromagnetic induction principle utilized, therefore also want consume reactive power.
Therefore, not only to comprise active power in the electrical power transmission system of rural power grids, also will comprise reactive power.But there is negative effect in the transmission of reactive power: the increase of reactive power can cause the loss of voltage of transmission line to increase.Reactive power can cause the existence of user side low-voltage problem, affects the normal electricity consumption of user side.
Summary of the invention
For solving the problem, the invention provides a kind of electric power system with no-power compensation function, can supplement by idle the problem avoiding low-voltage, ensureing the normal electricity consumption of user side.
For solving the problem, the invention provides following technical scheme:
A kind of electric power system, this electric power system comprises: scheduling station, plant stand, transmission line, first concentrate reactive power compensator, second to concentrate reactive power compensator and power distribution station;
Described transmission line comprises: connect the first transmission line between described scheduling station with described plant stand and be connected the second transmission line of described plant stand and described power distribution station;
Described first concentrates reactive power compensator to be connected with described scheduling station;
Described second concentrates reactive power compensator to be connected with described plant stand.
Preferably, in above-mentioned electric power system, also comprise: the first Reactive Compensation of Distribution Lines device be connected with described first transmission line; The the second Reactive Compensation of Distribution Lines device be connected with described second transmission line.
Preferably, in above-mentioned electric power system, described first Reactive Compensation of Distribution Lines device and described second Reactive Compensation of Distribution Lines device are used for carrying out 10KV Reactive Compensation of Distribution Lines.
Preferably, in above-mentioned electric power system, described first Reactive Compensation of Distribution Lines device and described second Reactive Compensation of Distribution Lines device are voltage-regulation type reactive power automatic compensation device.
Preferably, in above-mentioned electric power system, also comprise: the low-pressure side reactive power compensator be connected with described power distribution station.
Preferably, in above-mentioned electric power system, described low-pressure side reactive power compensator is used for carrying out the reactive power compensation of 0.4KV low-pressure side.
Preferably, in above-mentioned electric power system, also comprise: telecontrol communication machine and reactive compensation cabinet;
Described scheduling station and described plant stand carry out data interaction by described telecontrol communication machine; Described reactive compensation cabinet is arranged on described scheduling station, concentrates reactive power compensator and described second to concentrate the running parameter of reactive power compensator for arranging described first.
Preferably, in above-mentioned electric power system, described scheduling station comprises: main control server, and described main control server has electric energy quality for substation online monitoring system, for detecting the quality of power supply of described scheduling station and described plant stand.
Known by foregoing description, the electric power system that technical solution of the present invention provides comprises: scheduling station, plant stand, transmission line, first concentrate reactive power compensator, second to concentrate reactive power compensator and power distribution station; Described transmission line comprises: connect the first transmission line between described scheduling station with described plant stand and be connected the second transmission line of described plant stand and described power distribution station; Described first concentrates reactive power compensator to be connected with described scheduling station; Described second concentrates reactive power compensator to be connected with described plant stand.In described supply lines system, scheduling station is provided with first and concentrates reactive power compensator, be provided for the stable of scheduling station terminal voltage, plant stand is provided with second and concentrates reactive power compensator, be provided for the stable of plant stand terminal voltage, to substantially reduce in electric power system due to the low-voltage problem that reactive power causes, ensure that the stable of electric power system voltage.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
A kind of structural representation with the electric power system of no-power compensation function that Fig. 1 provides for the embodiment of the present application;
The structural representation of the another kind of electric power system that Fig. 2 provides for the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The powerful device such as asynchronous motor, A.C. welder can be used in rural power grids, also be the electromagnetic induction principle utilized, therefore also want consume reactive power.Due to the impact of reactive power, the existence of user side low-voltage problem can be caused, affect the normal electricity consumption of user side.
For solving the problem, the embodiment of the present application provides a kind of electric power system with no-power compensation function, and this electric power system can supplement by idle the problem avoiding low-voltage, ensures the normal electricity consumption of user side.
With reference to figure 1, a kind of structural representation with the electric power system of no-power compensation function that Fig. 1 provides for the embodiment of the present application, this electric power system comprises: scheduling station 11, plant stand 12, transmission line 14, first concentrate reactive power compensator 15, second to concentrate reactive power compensator 16 and power distribution station 13.
Described transmission line 14 comprises: connect the first transmission line 141 between described scheduling station 11 with described plant stand 12 and be connected the second transmission line 142 of described plant stand 12 and described power distribution station 13.Scheduling station 11 is transmitted electricity to plant stand 12 by the first transmission line 141.Plant stand 12 is transmitted electricity to power distribution station 13 by the second transmission line 142, and corresponding transformer is passed through to customer power supply in power distribution station 13.
Can comprise multiple plant stand 12 in described electric power system, each plant stand 12 can arrange multiple power distribution station 13.In FIG, illustrate only a plant stand 12 and a power distribution station 13.Plant stand 12 and give plant stand 12 connect power distribution station 13 number can according to for number and power load setting.
Described first concentrates reactive power compensator 15 to be connected with described scheduling station 11.Described second concentrates reactive power compensator 16 to be connected with described plant stand 12.Described first concentrates reactive power compensator 15 to carry out reactive power compensation for the voltage exported to plant stand 12 scheduling station 11.Described second concentrates reactive power compensator 16 to carry out reactive power compensation for the voltage exported to power distribution station 13 station 12, to ensure the voltage stabilization of electric power system.
Visible, electric power system described in the embodiment of the present application is provided with first at scheduling station 11 and concentrates reactive power compensator 15, be provided for the stable of the voltage of scheduling station 11 end, plant stand 12 is provided with second and concentrates reactive power compensator 16, be provided for the stable of the voltage of plant stand 12 end, to substantially reduce in electric power system due to the low-voltage problem that reactive power causes, ensure that the stable of electric power system voltage.
With reference to the structural representation of the another kind of electric power system that figure 2, Fig. 2 provides for the embodiment of the present application, Fig. 2 illustrated embodiment comprises further in Fig. 1 illustrated embodiment: the first Reactive Compensation of Distribution Lines device 21 be connected with described first transmission line 141; The the second Reactive Compensation of Distribution Lines device 22 be connected with described second transmission line 142.
Described first Reactive Compensation of Distribution Lines device 21 and described second Reactive Compensation of Distribution Lines device 22 are for carrying out 10KV Reactive Compensation of Distribution Lines.Described first Reactive Compensation of Distribution Lines device 21 is voltage-regulation type reactive power automatic compensation device with described second Reactive Compensation of Distribution Lines device 22.
Voltage-regulation type tune reactive power automatic compensation device is the terminal voltage in regulating capacitor group, square principle be directly proportional of idle and its terminal voltage exported in reactive power compensation is to realize reactive power compensation, that is: which is adjusted idle, offset phases is many, compensate meticulous, when the voltage regulation limits of voltage regulator be 0.6UCN ~ UCN voltage regulator gear is 9 grades, corresponding Capacitor banks output capacity scope is at 0.36QC--QC.Voltage-regulation type adjusts reactive power automatic compensation device to adopt autocoupling type Loading voltage regulator, the not power-off of Reactive-power control process capacitor, without overvoltage with shove, the electric capacity life-span is long, and the complete sets of equipment reliability is high; Be applicable to newly-built or transformation 110-35kV transformer station imaginary power automatic compensation, during old Transfomer Substation Reconstruction, the legacy equipments such as original TBB, VQC still can Modification and reutilization.Adopt in Fig. 2 illustrated embodiment, also comprise: the low-pressure side reactive power compensator 23 be connected with described power distribution station 13.A corresponding low-pressure side reactive power compensator 23 in power distribution station.Described low-pressure side reactive power compensator is used for carrying out the reactive power compensation of 0.4KV low-pressure side.0.4kV side load intensive or the long situation of circuit are the basic places of rural area " low-voltage " problem.0.4kV power distribution network is mainly rural subscribers' life lighting, field irrigation, agricultural byproducts processing and township industry etc. and provides electric energy, its direct user oriented, often by the impact of the conditions such as local climate, landform, power load, that in power network, problem is maximum, loss is maximum, more complicated in exploration and planning and designing, whether reasonably carry out planning and designing, have a direct impact the development of local economy and the regular maintenance of network and safe operation tool.Therefore, carry out reactive power compensation by the reactive power compensation of 0.4KV low-pressure side, the transformation of 0.4kV low-voltage network can be made will to accomplish thoroughly effective improvement.
Optionally, Fig. 2 illustrated embodiment also comprises: telecontrol communication machine and reactive compensation cabinet; Described scheduling station and described plant stand carry out data interaction by described telecontrol communication machine; Described reactive compensation cabinet is arranged on described scheduling station, concentrates reactive power compensator and described second to concentrate the running parameter of reactive power compensator for arranging described first.
Optionally, described reactive compensation cabinet may be used for carrying out setting parameter to all reactive power compensators of described electric power system, so that reasonable selection supply node compensation way at different levels and capacity, select appropriate compensation point to meet the compensation requirement of supply node at different levels.Supply node at different levels is followed successively by main website, the first transmission line, plant stand, the second transmission line and power distribution station.
In the exemplary embodiment illustrated in fig. 2, be respectively main website 11, plant stand 12, power distribution station 13 and transmission line 14 and be provided with reactive power compensator separately,
In electric power system described in the embodiment of the present application, described scheduling station 11 comprises: main control server, and described main control server has electric energy quality for substation online monitoring system, for detecting the quality of power supply of described scheduling station and described plant stand.Main control server is used for the unified reactive power compensation controlling supply node at different levels, realizes multistage uniting and adjustment and the on-line monitoring of reactive power compensation.
Described main control server comprises: electric energy quality for substation online monitoring system.This electric energy quality for substation online monitoring system is function and the comprehensive power quality collection monitoring system of one of collection intelligent electric meter, intelligent acquisition, two-way interactive, has the function of the equipment such as distribution transformer monitoring, multifunctional electric energy meter, harmonic meter, statistical voltmeter, reactive power compensation, teletransmission communication device.
This electric power system adopts multistage uniting and adjustment mode to realize reactive power compensation, can meet the control overflow of all kinds of part throttle characteristics of 110kV-35kV transformer station; According to user's actual needs, for user side load condition, different reactive power compensators can be configured.This electric power system passes through advanced auto-reactive compensation technology, compensation rate continuously adjustabe; Can make in reactive power compensator, capacitor long service life, utilization rate of equipment and installations is high; Defencive function is perfect, and intelligence degree is high; Possess wired, communication and the data-transmission mode such as local area network (LAN), GPRS are wireless, optical fiber.
Known by foregoing description, electric power system described in the embodiment of the present application can supplement by idle the problem avoiding low-voltage, ensures the normal electricity consumption of user side.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. there is an electric power system for no-power compensation function, it is characterized in that, comprising: scheduling station, plant stand, transmission line, first concentrate reactive power compensator, second to concentrate reactive power compensator and power distribution station;
Described transmission line comprises: connect the first transmission line between described scheduling station with described plant stand and be connected the second transmission line of described plant stand and described power distribution station;
Described first concentrates reactive power compensator to be connected with described scheduling station;
Described second concentrates reactive power compensator to be connected with described plant stand.
2. electric power system according to claim 1, is characterized in that, also comprises: the first Reactive Compensation of Distribution Lines device be connected with described first transmission line; The the second Reactive Compensation of Distribution Lines device be connected with described second transmission line.
3. electric power system according to claim 2, is characterized in that, described first Reactive Compensation of Distribution Lines device and described second Reactive Compensation of Distribution Lines device are used for carrying out 10KV Reactive Compensation of Distribution Lines.
4. electric power system according to claim 2, is characterized in that, described first Reactive Compensation of Distribution Lines device and described second Reactive Compensation of Distribution Lines device are voltage-regulation type reactive power automatic compensation device.
5. electric power system according to claim 1, is characterized in that, also comprises: the low-pressure side reactive power compensator be connected with described power distribution station.
6. electric power system according to claim 5, is characterized in that, described low-pressure side reactive power compensator is used for carrying out the reactive power compensation of 0.4KV low-pressure side.
7. electric power system according to claim 1, is characterized in that, also comprises: telecontrol communication machine and reactive compensation cabinet;
Described scheduling station and described plant stand carry out data interaction by described telecontrol communication machine; Described reactive compensation cabinet is arranged on described scheduling station, concentrates reactive power compensator and described second to concentrate the running parameter of reactive power compensator for arranging described first.
8. the electric power system according to any one of claim 1-7, it is characterized in that, described scheduling station comprises: main control server, and described main control server has electric energy quality for substation online monitoring system, for detecting the quality of power supply of described scheduling station and described plant stand.
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| CN201510658622.8A CN105119295B (en) | 2015-10-12 | 2015-10-12 | A kind of electric power system with no-power compensation function |
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| CN201510658622.8A CN105119295B (en) | 2015-10-12 | 2015-10-12 | A kind of electric power system with no-power compensation function |
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| CN105119295B CN105119295B (en) | 2018-06-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356478A (en) * | 2015-12-11 | 2016-02-24 | 谭焕玲 | Power supply system having reactive compensation function |
| CN105703379A (en) * | 2016-03-29 | 2016-06-22 | 国网浙江奉化市供电公司 | Power grid system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102904268A (en) * | 2012-11-07 | 2013-01-30 | 山东电力集团公司莱芜供电公司 | Three-joint-regulation reactive power compensation system |
| CN104410169A (en) * | 2014-12-18 | 2015-03-11 | 国网四川大英县供电有限责任公司 | Intelligent and online area monitoring system and implementation method thereof |
| CN205017011U (en) * | 2015-10-12 | 2016-02-03 | 国网浙江临海市供电公司 | Power supply system with reactive compensation function |
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2015
- 2015-10-12 CN CN201510658622.8A patent/CN105119295B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102904268A (en) * | 2012-11-07 | 2013-01-30 | 山东电力集团公司莱芜供电公司 | Three-joint-regulation reactive power compensation system |
| CN104410169A (en) * | 2014-12-18 | 2015-03-11 | 国网四川大英县供电有限责任公司 | Intelligent and online area monitoring system and implementation method thereof |
| CN205017011U (en) * | 2015-10-12 | 2016-02-03 | 国网浙江临海市供电公司 | Power supply system with reactive compensation function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356478A (en) * | 2015-12-11 | 2016-02-24 | 谭焕玲 | Power supply system having reactive compensation function |
| CN105703379A (en) * | 2016-03-29 | 2016-06-22 | 国网浙江奉化市供电公司 | Power grid system |
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| CN105119295B (en) | 2018-06-19 |
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