CN202817767U - Power system reactive power compensation device - Google Patents
Power system reactive power compensation device Download PDFInfo
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- CN202817767U CN202817767U CN 201220455177 CN201220455177U CN202817767U CN 202817767 U CN202817767 U CN 202817767U CN 201220455177 CN201220455177 CN 201220455177 CN 201220455177 U CN201220455177 U CN 201220455177U CN 202817767 U CN202817767 U CN 202817767U
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- 239000003990 capacitor Substances 0.000 claims abstract description 50
- 238000005070 sampling Methods 0.000 claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 230000006698 induction Effects 0.000 claims abstract description 7
- 238000005183 dynamical system Methods 0.000 claims description 18
- 238000009434 installation Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 1
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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 utility model provides a power system reactive power compensation device, comprising a first power factor detection module and a capacitance compensation module; wherein the first power factor detection module is arranged at a power supply end of the reactive power compensation device; the first power factor detection module comprises a first sampling mutual inductor, a first induction signal processor, and a first power factor display meter; the capacitance compensation module consists of at least two sets of capacitors; the at least two sets of capacitors comprise one set of common accessed capacitors and at least one set of switched capacitors; the common accessed capacitors are commonly accessed in a line; the switched capacitors are respectively provided with a corresponding switching switch, and control to switch in or out of the line through the switching switches. The power system reactive power compensation device of the utility model has the advantages of convenient installation and flexible use, and is suitable for wide small-scale power utilization companies.
Description
Technical field
The utility model relates to technical field of power systems, particularly about a kind of dynamical system reactive power compensator, is applicable to the small-sized electricity consumption such as small processing, manufacturing, machine maintenance enterprise self local compensation.
Background technology
At present, the reactive power compensation of electric power system mainly contains several modes: transformer station's centralized compensation, line sectionalizing compensation, large user's self-compensation situation, the compensation of change station power distribution case etc., lack and a kind ofly can be applicable to the small-sized electricity consumption such as processing, manufacturing, machine maintenance enterprise, make it finish easily the reactive power compensator of self local compensation.
Summary of the invention
Main purpose of the present utility model is to solve problems of the prior art, and a kind of device that small business carries out reactive power compensation that is applied to is provided.
The purpose of this utility model is achieved by following technical proposals:
A kind of dynamical system reactive power compensator is connected between power supply and the power load, it is characterized in that, comprising: the first power factor (PF) detection module and capacitance compensation module;
Described the first power factor (PF) detection module is arranged at the power end of reactive power compensator; This first power factor (PF) detection module comprises: the first sampling mutual inductor, the first induced signal processor and the first power factor (PF) display list;
Described the first sampling mutual inductor is connected to the power end of reactive power compensator, is used for the current signal of this power end of induction sampling;
Described the first induced signal processor, the current signal of the power load after the compensation of obtaining for the treatment of the first sampling mutual inductor calculates the power factor (PF) after the compensation;
Described the first power factor (PF) display list is for the power factor (PF) after this compensation of demonstration;
Described capacitance compensation module is serially connected in the power end and the circuit between the power load end of reactive-load compensator; This capacitance compensation module is made of at least two group capacitors; Comprise at least one group at least in this two group capacitor and often connect capacitor and at least one group of switched capacitor;
The described capacitor that often connects is in the normal line attachment;
Described switched capacitor is respectively arranged with corresponding fling-cut switch, drops into or cut out circuit by fling-cut switch control.
Also be provided with the automatic switching control module; Described automatic switching control module comprises: power factor (PF) analysis circuit and automatic switching circuit;
Described power factor (PF) analysis circuit links to each other with described the first induced signal processor, is used for judging power factor (PF) after the described compensation whether in the power control scope, and sends the switching control signal according to judged result to automatic switching circuit;
Described automatic switching circuit links to each other with described each fling-cut switch, is used for controlling each fling-cut switch according to this switching control signal and drops into or cut out.
Described power control scope is set as between the 0.85-0.95.
Also be provided with the function diverter switch; Described function diverter switch is used for switching automatic control mode and manual control model;
Under the described automatic control mode, described fling-cut switch is dropped into or is cut out by automatic switching circuit control;
Under the described manual control model, described fling-cut switch is dropped into or is cut out by manual control.
Also be provided with the second power factor (PF) detection module; This second power factor (PF) detection module comprises: the second sampling mutual inductor, the second induced signal processor and the second power factor (PF) display list;
Described the second sampling mutual inductor is connected to the power load end of reactive power compensator, is used for the current signal of this power load end of induction sampling;
Described the second induced signal processor for the treatment of the power load end current signal that the second sampling mutual inductor obtains, calculates the front power factor (PF) of compensation;
Described the second power factor (PF) display list is used for the power factor (PF) that shows that this compensation is front.
The described capacitor that often connects is different capacitances with switched capacitor.
Describedly often connect capacitor and switched capacitor is the same capacitance capacity.
Described capacitance compensation module often connects capacitor by one group and two groups of switched capacitors consist of; The described capacitor that often connects is identical capacitance with each switched capacitor, accounts for respectively 1/3rd of capacitance compensation module total capacitance capacity.
By the utility model embodiment, the user can pass through the power factor (PF) of the first power factor (PF) detection module Real-Time Monitoring power load after precompensation, and according to the access quantity of this power control switched capacitor, so that the power factor (PF) after the compensation maintains in the ideal range.Because this reactive power compensator is simple in structure, therefore have easy for installationly, use the characteristics such as flexible, be applicable to small-sized electricity consumption enterprise, good action is played in orderly power supply and standard electricity consumption.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, consists of the application's a part, does not consist of restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the circuit theory diagrams of manual control model dynamical system reactive power compensator;
Fig. 2 is the circuit theory diagrams of automatic control mode dynamical system reactive power compensator.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with execution mode and accompanying drawing, the utility model is described in further details.At this, the utility model be used for is explained in exemplary embodiment of the present utility model and explanation thereof, but not as to restriction of the present utility model.
Fig. 1 is the circuit theory diagrams of dynamical system reactive power compensator.As shown in the figure, the dynamical system reactive power compensator is connected between power supply and the power load.This reactive power compensator comprises: the first power factor (PF) detection module and capacitance compensation module.
Described the first power factor (PF) detection module is arranged at the power end of reactive power compensator.This first power factor (PF) detection module comprises: the first sampling mutual inductor, the first induced signal processor and the first power factor (PF) display list.
Described the first sampling mutual inductor is connected to the power end of reactive power compensator, is used for the negative current signal of electricity consumption after this compensation of induction sampling.
Described the first induced signal processor, the current signal for the treatment of the first sampling mutual inductor obtains calculates the power factor (PF) after compensating.
Described the first power factor (PF) display list is for the power factor (PF) after this compensation of demonstration.
Described capacitance compensation module is serially connected in the power end and the circuit between the power load end of reactive-load compensator.This capacitance compensation module is made of at least two group capacitors.Comprise at least one group at least in this two group capacitor and often connect capacitor and at least one group of switched capacitor.
The described capacitor that often connects is in the normal line attachment.
Described switched capacitor is respectively arranged with corresponding fling-cut switch, drops into or cut out circuit by fling-cut switch control.
Describedly often connect capacitor and switched capacitor can be the same capacitance capacity, also can be different capacitances.In the embodiment shown in fig. 1, this capacitance compensation module often connects capacitor by one group and two groups of switched capacitors consist of.Be identical capacitance between each capacitor, account for respectively 1/3rd of capacitance compensation module total capacitance capacity.
By the said structure design, this patent provides a kind of dynamical system reactive power compensator simple in structure.The user can pass through the power factor (PF) of the first power factor (PF) detection module Real-Time Monitoring power load after precompensation, and according to the access quantity of this power control switched capacitor, so that the power factor (PF) after the compensation maintains in the ideal range.Because this reactive power compensator is simple in structure, therefore have easy for installationly, use the characteristics such as flexible, be applicable to small-sized electricity consumption enterprise, good action is played in orderly power supply and standard electricity consumption.
In addition, as shown in Figure 1, also can be provided with the second power factor (PF) detection module at the power load end of described reactive power compensator.This second power factor (PF) detection module comprises: the second sampling mutual inductor, the second induced signal processor the second power factor (PF) display list.
Described the second sampling mutual inductor is connected to the power load end of reactive power compensator, is used for the current signal of this power load of induction sampling.
Described the second induced signal processor, the current signal of the power load of obtaining for the treatment of the second sampling mutual inductor calculates the power factor (PF) before the compensation.
Described the second power factor (PF) display list is used for the power factor (PF) that shows that this compensation is front.
By the power load end at reactive power compensator the second power factor (PF) detection module is set, can shows the power factor (PF) before this line build-out so that the user better understand this circuit current with electricity condition and reactive power compensation state.
In above-described embodiment, the control of the switching of described switched capacitor is by manually control of fling-cut switch.The below provides a kind of embodiment of automatic switching control.
As shown in Figure 2, this dynamical system reactive power compensator also is provided with the automatic switching control module on the basis of aforementioned reactive power compensator shown in Figure 1.Described automatic switching control module comprises: power factor (PF) analysis circuit and automatic switching circuit.
Described power factor (PF) analysis circuit links to each other with described the first induced signal processor, is used for judging power factor (PF) after the described compensation whether in the power control scope, and sends the switching control signal according to judged result to automatic switching circuit.
In the present embodiment, this power control scope is set as between the 0.85-0.95.The user can be according to actual needs, this power control scope of self-defining.
Described automatic switching circuit links to each other with described each fling-cut switch, is used for controlling each fling-cut switch according to this switching control signal and drops into or cut out.
By above-mentioned automatic switching control module, the power factor (PF) of this reactive power compensator after to the compensation that calculate to obtain carried out automatic decision, according to judging whether it falls into the power control scope, and drive the input of control switched capacitor or cut out with this, finish the control of the automatic switching of reactive power compensation system.
In addition, in order to make things convenient for the user at above-mentioned automatic control mode and manually independently to select between the control model, this patent also is provided with the function diverter switch at this reactive power compensator.Described function diverter switch is used for switching automatic control mode and manual control model.Under the described automatic control mode, described fling-cut switch is dropped into or is cut out by automatic switching circuit control; Under the described manual control model, described fling-cut switch is dropped into or is cut out by manual control.
In sum, this patent provides a kind of dynamical system reactive power compensator.This reactive power compensator is simple in structure.The user can pass through the power factor (PF) of the first power factor (PF) detection module Real-Time Monitoring power load after precompensation, and according to the access quantity of this power control switched capacitor, so that the power factor (PF) after the compensation maintains in the ideal range.Because this reactive power compensator is simple in structure, therefore have easy for installationly, use the characteristics such as flexible, be applicable to small-sized electricity consumption enterprise, good action is played in orderly power supply and standard electricity consumption.Persons skilled in the art any not creative transformation of doing under this design philosophy all should be considered as within protection range of the present utility model.
Claims (8)
1. a dynamical system reactive power compensator is connected between power supply and the power load, it is characterized in that, comprising: the first power factor (PF) detection module and capacitance compensation module;
Described the first power factor (PF) detection module is arranged at the power end of reactive power compensator; This first power factor (PF) detection module comprises: the first sampling mutual inductor, the first induced signal processor and the first power factor (PF) display list;
Described the first sampling mutual inductor is connected to the power end of reactive power compensator, is used for the current signal of this power end of induction sampling;
Described the first induced signal processor, the current signal of the power load after the compensation of obtaining for the treatment of the first sampling mutual inductor calculates the power factor (PF) after the compensation;
Described the first power factor (PF) display list is for the power factor (PF) after this compensation of demonstration;
Described capacitance compensation module is serially connected in the power end and the circuit between the power load end of reactive-load compensator; This capacitance compensation module is made of at least two group capacitors; Comprise at least one group at least in this two group capacitor and often connect capacitor and at least one group of switched capacitor;
The described capacitor that often connects is in the normal line attachment;
Described switched capacitor is respectively arranged with corresponding fling-cut switch, drops into or cut out circuit by fling-cut switch control.
2. dynamical system reactive power compensator as claimed in claim 1 is characterized in that: also be provided with the automatic switching control module; Described automatic switching control module comprises: power factor (PF) analysis circuit and automatic switching circuit;
Described power factor (PF) analysis circuit links to each other with described the first induced signal processor, is used for judging power factor (PF) after the described compensation whether in the power control scope, and sends the switching control signal according to judged result to automatic switching circuit;
Described automatic switching circuit links to each other with each fling-cut switch, is used for controlling each fling-cut switch according to this switching control signal and drops into or cut out.
3. dynamical system reactive power compensator as claimed in claim 2, it is characterized in that: described power control scope is set as between the 0.85-0.95.
4. dynamical system reactive power compensator as claimed in claim 2 is characterized in that: also be provided with the function diverter switch; Described function diverter switch is used for switching automatic control mode and manual control model;
Under the described automatic control mode, described fling-cut switch is dropped into or is cut out by automatic switching circuit control;
Under the described manual control model, described fling-cut switch is dropped into or is cut out by manual control.
5. dynamical system reactive power compensator as claimed in claim 1 is characterized in that: also be provided with the second power factor (PF) detection module; This second power factor (PF) detection module comprises: the second sampling mutual inductor, the second induced signal processor and the second power factor (PF) display list;
Described the second sampling mutual inductor is connected to the power load end of reactive power compensator, is used for the current signal of this power load end of induction sampling;
Described the second induced signal processor for the treatment of the power load end current signal that the second sampling mutual inductor obtains, calculates the front power factor (PF) of compensation;
Described the second power factor (PF) display list is used for the power factor (PF) that shows that this compensation is front.
6. dynamical system reactive power compensator as claimed in claim 1, it is characterized in that: the described capacitor that often connects is different capacitances with switched capacitor.
7. dynamical system reactive power compensator as claimed in claim 1 is characterized in that: describedly often connect capacitor and switched capacitor is the same capacitance capacity.
8. dynamical system reactive power compensator as claimed in claim 1, it is characterized in that: described capacitance compensation module often connects capacitor by one group and two groups of switched capacitors consist of; The described capacitor that often connects is identical capacitance with each switched capacitor, accounts for respectively 1/3rd of capacitance compensation module total capacitance capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220455177 CN202817767U (en) | 2012-09-06 | 2012-09-06 | Power system reactive power compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220455177 CN202817767U (en) | 2012-09-06 | 2012-09-06 | Power system reactive power compensation device |
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| Publication Number | Publication Date |
|---|---|
| CN202817767U true CN202817767U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220455177 Expired - Fee Related CN202817767U (en) | 2012-09-06 | 2012-09-06 | Power system reactive power compensation device |
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| Country | Link |
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| CN (1) | CN202817767U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891491A (en) * | 2012-09-06 | 2013-01-23 | 山西省电力公司大同供电分公司 | Reactive compensation device of power system |
| WO2014161459A1 (en) * | 2013-03-30 | 2014-10-09 | Neal George Stewart | Algorithm for passive power factor compensation method with differential capacitor change and reduced line transient noise |
-
2012
- 2012-09-06 CN CN 201220455177 patent/CN202817767U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891491A (en) * | 2012-09-06 | 2013-01-23 | 山西省电力公司大同供电分公司 | Reactive compensation device of power system |
| CN102891491B (en) * | 2012-09-06 | 2016-02-03 | 山西省电力公司大同供电分公司 | A kind of reactive compensation device of power system |
| WO2014161459A1 (en) * | 2013-03-30 | 2014-10-09 | Neal George Stewart | Algorithm for passive power factor compensation method with differential capacitor change and reduced line transient noise |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20190906 |
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| CF01 | Termination of patent right due to non-payment of annual fee |