CN210183014U - Reactive power compensation system - Google Patents
Reactive power compensation system Download PDFInfo
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- CN210183014U CN210183014U CN201921041186.XU CN201921041186U CN210183014U CN 210183014 U CN210183014 U CN 210183014U CN 201921041186 U CN201921041186 U CN 201921041186U CN 210183014 U CN210183014 U CN 210183014U
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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
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- 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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Abstract
The utility model discloses a reactive power compensation system, include: the synchronous switching control module is provided with a power grid sampling end group, a switch control end group and a compensation control end group, and the power grid sampling end group can be connected with an external power grid; the switching switch module is provided with a power grid input end group, a switch control input end group and a switch output end group, the power grid input end group can be connected with an external power grid, and the switch control input end group is connected with the switch control end group; the reactive compensation module is provided with a compensation control input end group, a switch connecting end group and a power grid connecting end group, the compensation control input end group is connected with the compensation control end group, the connecting end group is connected with the switch output end group, and the power grid connecting end group can be connected with an external power grid. The complex reactive compensation system is divided into three components in a modularized mode, the function division is more clear, the condition of wiring errors can be reduced, and the transportation is convenient.
Description
Technical Field
The utility model relates to a power grid reactive compensation field especially relates to reactive power compensation system.
Background
With the development of the technology, the production is more automatic and the life of people is more intelligent due to the updating iteration of the electric and electronic products. Along with the rapid increase of the electricity consumption in the change, the requirement on the power grid is higher and higher. In order to improve the power factor of the power grid and improve the power supply quality of the power grid, reactive power compensation needs to be performed on the power grid.
Among the prior art, reactive power compensation system generally all uses the regulator cubicle as the carrier, connects and fixes various electrical components through cable and copper bar in the regulator cubicle, and the dismouting process is complicated, and the transportation of being not convenient for connects the problem that takes place the wiring mistake easily between a plurality of electrical components, and the operation is numerous and diverse.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a reactive power compensation system, its mode through integrated moduleization simplifies the connection.
The utility model provides a technical scheme that its technical problem provided is: reactive power compensation system comprising:
the synchronous switching control module is provided with a power grid sampling end group, a switch control end group and a compensation control end group, and the power grid sampling end group can be connected with an external power grid;
the switching switch module is provided with a power grid input end group, a switch control input end group and a switch output end group, the power grid input end group can be connected with an external power grid, and the switch control input end group is connected with the switch control end group;
the reactive compensation module is provided with a compensation control input end group, a switch connecting end group and a power grid connecting end group, the compensation control input end group is connected with the compensation control end group, the connecting end group is connected with the switch output end group, and the power grid connecting end group can be connected with an external power grid.
Preferably, the synchronous switching control module is provided with a selection unit and a compensation selection end group, the selection unit is connected with the compensation selection end group, the number of the reactive compensation modules is at least two, the reactive compensation modules are provided with selection input ends, and the compensation selection end group is connected with the selection input ends.
Preferably, the synchronous switching control module comprises a current processing unit and a current transformer, and the current processing unit is connected with the power grid sampling end group through the current transformer.
Preferably, synchronous switching control module group includes voltage processing unit and first fuse, voltage processing unit pass through first fuse with the electric wire netting sample end group link.
Preferably, the switching switch module includes at least one vacuum switch tube, the control end of the vacuum switch tube is connected with the switch control input end, one end of the vacuum switch tube is connected with the power grid input end group, and the other end of the vacuum switch tube is connected with the switch output end group.
Preferably, the switching switch module further comprises a second fuse, and the vacuum switch tube is connected with the power grid input end group through the second fuse.
Preferably, the reactive power compensation module includes circuit breaker, relay and condenser, the input of circuit breaker with the electric wire netting connecting end group link, the output of circuit breaker with the one end of relay is connected, the other end of relay with the one end of condenser is connected, the control end of relay with compensation control input end group link, the other end of condenser with switch connecting end group link.
Preferably, the relay is a magnetic latching relay.
Preferably, the lightning protection device is further included, one end of the lightning protection device is connected with the power grid connection end group, and the other end of the lightning protection device is grounded.
The utility model has the advantages that: through the structure of synchronous switching control module group, fling-cut switch module and reactive compensation module, with the whole modular mode of numerous and diverse reactive compensation system, divide into three component, the function divides the worker more clear and definite, only needs during the use to correspond each end group and connects, can reduce the condition that the wiring error appears to dismouting process operation is simple, convenient transportation.
Drawings
The invention will be further described with reference to the following figures and examples:
FIG. 1 is a perspective view of one embodiment of the present invention;
FIG. 2 is an exploded perspective view of the fling-cut switch module;
FIG. 3 is an exploded perspective view of the reactive compensation module;
fig. 4 is a schematic circuit diagram of one embodiment of the present invention.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
Referring to fig. 1 and 4, the utility model provides a reactive power compensation system, include:
the synchronous switching control module 10 is provided with a power grid sampling end group, a switch control end group and a compensation control end group, and the power grid sampling end group can be connected with an external power grid;
the switching switch module 20 is provided with a power grid input end group 21, a switch control input end group 22 and a switch output end group 23, the power grid input end group 21 can be connected with an external power grid, and the switch control input end group 22 is connected with the switch control end group;
the reactive compensation module 30 is provided with a compensation control input end group 31, a switch connecting end group 32 and a power grid connecting end group 33, the compensation control input end group 31 is connected with the compensation control end group, the connecting end group is connected with the switch output end group 23, and the power grid connecting end group 33 can be connected with an external power grid.
Through the structure of synchronous switching control module group 10, fling-cut switch module 20 and reactive compensation module group 30, with the whole modular mode of the reactive compensation system of numerous and diverse, divide into three component, the function divides the worker more clear and definite, only needs to correspond each end group during the use and connects, can reduce the condition that the wiring error appears to dismouting process operation is simple, convenient transportation.
Referring to fig. 4, the synchronous switching control module 10 is provided with at least two selection units and at least two compensation selection end groups, the selection units are connected with the compensation selection end groups, and the reactive compensation modules 30 are provided with selection input ends, and the compensation selection end groups are connected with the selection input ends.
Reactive compensation of the external power grid generally requires a plurality of reactive compensation modules 30 to be matched to accurately adjust the power factor of the external power grid. The synchronous control module selects the reactive compensation modules 30 with the most appropriate capacitance value or the reactive compensation modules 30 with the appropriate number through the selection unit according to the working state of the external power grid, and the optimal adjustment effect is achieved. The reactive compensation module 30 operates according to the compensation control input terminal set 31 when the selection signal is provided at the selection input terminal. The compensation selection end group comprises a plurality of end pins which are respectively connected with the selection input ends of different reactive compensation modules 30, and the compensation control end group of the synchronous switching module is matched with the compensation selection end group to individually control the reactive compensation modules 30 or simultaneously control the reactive compensation modules 30. The selection unit can be a structure that a singlechip is matched with a decoder, the singlechip outputs the number information corresponding to the reactive compensation module 30, and the decoder converts the number information into an enabling signal and inputs the enabling signal to the selection input end of the reactive compensation module 30.
Referring to fig. 4, as a preferred embodiment, the synchronous switching control module 10 includes a current processing unit and a current transformer 11, and the current processing unit is connected to the grid sampling terminal set through the current transformer 11.
The power of external power grid is large, if it is direct great to current sampling current, damage the device easily, therefore, current processing unit passes through current transformer 11 and is connected with electric wire netting sample end group, electric wire netting sample end group and external electric wire netting are connected, current transformer 11's primary winding is connected with external electric wire netting, current transformer 11's secondary winding is connected with current processing unit, with this can convert the heavy current of once side into the undercurrent of secondary side, can prevent current processing unit damage when realizing external electric wire netting current sampling, current processing unit obtains and obtains the current parameter value of external electric wire netting according to the electric current. The current processing unit may be an analog-to-digital conversion unit that converts an analog signal input by the current transformer 11 into a digital signal, i.e., a current parameter value.
Referring to fig. 4, as a preferred embodiment, the synchronous switching control module 10 includes a voltage processing unit and a first fuse 12, and the voltage processing unit is connected to the grid sampling terminal set through the first fuse 12.
When the voltage of the external power grid is sampled, the voltage fluctuation is too large, and the problem that the voltage processing unit is damaged can be caused. The voltage processing unit is connected with electric wire netting sample end group through first fuse 12, and when electric wire netting sample end group was connected with outside electric wire netting, if voltage fluctuation was too big, the electric current that can make the inflow electric wire netting sample end group increases, if the electric current surpassed the threshold value of first fuse 12, first fuse 12 disconnection reached protection voltage processing unit's effect, improved reliability. The voltage processing unit can be an analog-to-digital conversion unit to convert the acquired voltage analog signal into a digital signal, so that subsequent calculation processing is facilitated.
Referring to fig. 2 and 4, as a preferred embodiment, the fling-cut switch module 20 includes at least one vacuum switch tube 24, a control end of the vacuum switch tube 24 is connected to the switch control input end, one end of the vacuum switch tube 24 is connected to the grid input end group 21, and the other end of the vacuum switch tube 24 is connected to the switch output end group 23. In the reactive compensation process, the action of switching the capacitor is frequent, so the switching switch also needs to be frequently opened and closed, and the vacuum switch tube 24 has the advantages of short arc extinguishing time and long service life of the contact because the insulating medium of the vacuum switch tube is high vacuum, so the device is suitable for the working condition that the switching capacitor is frequently opened and closed, and the reliability is improved.
Referring to fig. 4, in order to protect the vacuum interrupter 24 and the reactive power compensation module 30 connected subsequently, the fling-cut switch module 20 further includes a second fuse 25, and the vacuum interrupter 24 is connected to the grid input terminal set 21 through the second fuse 25. The vacuum switch tube 24 is connected with the power grid input end group 21 through the second fuse 25, when the power grid input end group 21 is connected with an external power grid, if the surge of the external power grid is large, when the current flowing into the power grid input end group 21 is larger than the threshold value of the second fuse 25, the second fuse 25 is disconnected, the external power grid, the vacuum switch tube 24 and the reactive compensation module 30 are prevented from forming a loop, and the vacuum switch tube 24 or the reactive compensation module 30 is protected from being damaged by large current.
Referring to fig. 3 and 4, the reactive compensation module 30 includes a circuit breaker 34, a relay 35, and a capacitor 36, an input terminal of the circuit breaker 34 is connected to the grid connection terminal group 33, an output terminal of the circuit breaker 34 is connected to one end of the relay 35, the other end of the relay 35 is connected to one end of the capacitor 36, a control terminal of the relay 35 is connected to the compensation control input terminal group 31, and the other end of the capacitor 36 is connected to the switch connection terminal group 32.
The circuit breaker 34 is connected with the power grid connection end group 33, the power grid connection end group 33 is connected with an external power grid, the circuit breaker 34 plays a role of a master switch, the circuit breaker 34 is disconnected during maintenance, a user can be protected from electric shock, and safety is improved. The control end of the relay 35 is finally connected with the synchronous switching control module 10 through the compensation control input end group 31, so that the synchronous switching control module 10 can control the on/off of the relay 35. The capacitor 36 is connected to the switching module 20 via the switch connection terminal group 32, so that finally the switching module 20, the capacitor 36, the relay 35, the circuit breaker 34 and the external power grid can form a circuit.
In a preferred embodiment, the relay 35 is a magnetic latching relay. The magnetic latching relay does not need current to maintain the working state after acting, and the electric energy is saved.
Referring to fig. 4, in order to protect the reactive compensation module 30, a lightning protection device 40 is further included, one end of the lightning protection device 40 is connected to the grid connection end group 33, and the other end of the lightning protection device 40 is grounded. Under adverse circumstances such as thunderstorm weather, the great surge of reasons production such as the external power grid receives to strike a thunder, through be provided with lightning protection device 40 between electric wire netting connection end group 33 and external power grid, can protect reactive compensation module 30 and avoid the ring of sunding.
During specific work, the synchronous switching control module 10 is connected with an external power grid through a power grid sampling end group to obtain voltage, current and other parameter values of the external power grid, the synchronous switching control module 10 comprises a calculation processing unit, the calculation processing unit calculates a power factor value of the power grid according to the parameter values, and the power factor value is compared with a preset value to judge whether capacitance needs to be switched or not. If capacitance needs to be switched, the synchronous switching control module 10 transmits a switching signal to a compensation control input end of the reactive compensation module 30 through a compensation control end group, a relay 35 in the reactive compensation module 30 receives the switching signal and is switched off or switched on according to the switching signal, meanwhile, when the external power grid voltage of the synchronous switching control module 10 is zero, a switching signal is transmitted to the switching switch module 20 through the switching control end group, a vacuum switch tube 24 in the switching switch module 20 is switched on, so that the capacitor 36 is connected with the power grid, and capacitance is switched; or, when the external power grid current passes through zero, the synchronous switching control module 10 transmits a disconnection signal value to switch the switch module 20, and the vacuum switch tube 24 is disconnected, so as to separate the capacitor 36 from the power grid, thereby realizing the removal of the capacitance. In this way, the synchronous switching control module 10 monitors the working state of the external power grid, switches the capacitor in time according to the working state of the power grid, maintains the power factor of the external power grid at a high value, facilitates the normal work of the external power grid, and ensures the power supply quality.
The above embodiments are merely preferred embodiments of the present invention, and other embodiments are also possible. Equivalent modifications or substitutions may be made by those skilled in the art without departing from the spirit of the invention, and such equivalent modifications or substitutions are intended to be included within the scope of the claims set forth herein.
Claims (9)
1. Reactive power compensation system, characterized by, includes:
the synchronous switching control module (10) is provided with a power grid sampling end group, a switch control end group and a compensation control end group, and the power grid sampling end group can be connected with an external power grid;
the switching switch module (20) is provided with a power grid input end group (21), a switch control input end group (22) and a switch output end group (23), the power grid input end group (21) can be connected with an external power grid, and the switch control input end group (22) is connected with the switch control end group;
reactive compensation module (30) is provided with compensation control input end group (31), switch connection end group (32) and electric wire netting connection end group (33), compensation control input end group (31) with compensation control end group link, connection end group with switch output end group (23) are connected, electric wire netting connection end group (33) can be connected with outside electric wire netting.
2. The reactive power compensation system of claim 1, wherein: synchronous switching control module group (10) are provided with optional element and compensation selection end group, the optional element with compensation selection end group connects, reactive power compensation module group (30) have two at least, and reactive power compensation module group (30) are provided with the selection input end, compensation selection end group with the selection input end is connected.
3. The reactive power compensation system of claim 1, wherein: the synchronous switching control module (10) comprises a current processing unit and a current transformer (11), wherein the current processing unit is connected with the power grid sampling end group through the current transformer (11).
4. The reactive power compensation system of claim 1, wherein: synchronous switching control module group (10) include voltage processing unit and first fuse (12), voltage processing unit passes through first fuse (12) with the electric wire netting sample end group link.
5. The reactive power compensation system of claim 1, wherein: the switching switch module (20) comprises at least one vacuum switch tube (24), the control end of the vacuum switch tube (24) is connected with the switch control input end, one end of the vacuum switch tube (24) is connected with the power grid input end group (21), and the other end of the vacuum switch tube (24) is connected with the switch output end group (23).
6. The reactive power compensation system of claim 5, wherein: the switching switch module (20) further comprises a second fuse (25), and the vacuum switch tube (24) is connected with the power grid input end group (21) through the second fuse (25).
7. The reactive power compensation system of claim 1, wherein: reactive compensation module (30) include circuit breaker (34), relay (35) and condenser (36), the input of circuit breaker (34) with electric wire netting connection end group (33) are connected, the output of circuit breaker (34) with the one end of relay (35) is connected, the other end of relay (35) with the one end of condenser (36) is connected, the control end of relay (35) with compensation control input end group (31) are connected, the other end of condenser (36) with switch connection end group (32) are connected.
8. The reactive power compensation system of claim 7, wherein: the relay (35) is a magnetic latching relay.
9. The reactive power compensation system of claim 1, wherein: the lightning protection device is characterized by further comprising a lightning protection device (40), one end of the lightning protection device (40) is connected with the power grid connection end group (33), and the other end of the lightning protection device (40) is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921041186.XU CN210183014U (en) | 2019-07-04 | 2019-07-04 | Reactive power compensation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921041186.XU CN210183014U (en) | 2019-07-04 | 2019-07-04 | Reactive power compensation system |
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| Publication Number | Publication Date |
|---|---|
| CN210183014U true CN210183014U (en) | 2020-03-24 |
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| CN201921041186.XU Active CN210183014U (en) | 2019-07-04 | 2019-07-04 | Reactive power compensation system |
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| CN (1) | CN210183014U (en) |
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- 2019-07-04 CN CN201921041186.XU patent/CN210183014U/en active Active
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Effective date of registration: 20231220 Address after: 528400 First Floor, Building 1, Jinli Park, No. 15 Minke East Road, Shiqi District, Zhongshan City, Guangdong Province Patentee after: Guangdong Zhongyi Electrical Equipment Co.,Ltd. Address before: 528421 No. 8, muhejing 3rd Street, Ganggang Town, Zhongshan City, Guangdong Province Patentee before: ZHONGSHAN KAIFENG ELECTRICAL POWER TECHNOLOGY Co.,Ltd. |