CN209233471U - A kind of voltage regulator - Google Patents
A kind of voltage regulator Download PDFInfo
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- CN209233471U CN209233471U CN201821395683.5U CN201821395683U CN209233471U CN 209233471 U CN209233471 U CN 209233471U CN 201821395683 U CN201821395683 U CN 201821395683U CN 209233471 U CN209233471 U CN 209233471U
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- switch
- voltage
- compensation module
- main control
- kma2
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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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- Control Of Electrical Variables (AREA)
Abstract
The utility model discloses a kind of voltage regulators, including main control module, voltage compensation module and reactive compensation module, main control module is connect with voltage compensation module and reactive compensation module respectively, boosting and decompression mode are switched over by lifting switching switch KMA2, realize that fining multi gear position transformer boosting shelves and decompression shelves fining multi gear position are adjusted, voltage regulating effect is good, transformer is at low cost, it needs voltage compensation module can be opened from system break automatically when pressure regulation, without excess loss, it is low in energy consumption, master control scheduling and switching high reliablity, and it can directly efficiently solve the problem that end low pressure is too low in rural power grids, ensure resident's normal power supply, it solves at present using the voltage regulating mode for changing main transformer of transformer substation load tap changer, it cannot be guaranteed that the problem of voltage of all routes gets a promotion.
Description
Technical field
The utility model relates to low-voltage network technical field more particularly to a kind of voltage regulators.
Background technique
Low-voltage circuit end caused by the factors such as existing rural power grids weak foundation, radius of electricity supply is big, route is long, seasonal electricity consumption
Low voltage, so that client quality of voltage is poor, line loss increases, it is necessary to take measures to promote quality of voltage.
Currently, common there are two ways to adjusting voltage: one is changing the pressure regulation of main transformer of transformer substation load tap changer,
But the foundation adjusted can only be on the basis of substation bus bar, it cannot be guaranteed that the voltage of all routes gets a promotion, Er Qiepin
Numerous adjustment main transformer tap influences the safe operation of main transformer bigger；Another method is switched capacitor, by reducing line
Pressure drop caused by the reactive current of road achievees the purpose that pressure regulation, and the method applicable surface is limited, range of regulation is small, to because of power supply line
Voltage caused by too long is low to be difficult to achieve the desired results, and installation and adjustment are inconvenient.
To sum up, to solve the problems, such as rural LV long distance power delivery low-voltage, terminal voltage lifting device is needed, is promoted
Line voltage distribution, improve power quality, can with effective guarantee power supply quality, improve rate of qualified voltage, and it is at low cost, loss it is small,
It is high reliablity, applied widely.
Utility model content
The technical problem solved by the utility model is:to provide a kind of voltage regulators, are become at present using change to solve
The voltage regulating mode of power station main transformer load tap changer, it cannot be guaranteed that the problem of voltage of all routes gets a promotion, meanwhile,
Solve using switched capacitor voltage regulating mode applicable surface it is limited, range of regulation is small, to because power supply line it is too long caused by voltage
The undesirable problem of low adjustment effect.
The technical solution of the utility model includes:
A kind of voltage regulator, including main control module, voltage compensation module and reactive compensation module, the master control mould
Block is connect with voltage compensation module and reactive compensation module respectively.
The reactive compensation module includes secondary current mutual inductor, collector and intelligent capacitor, the intelligent capacitor
It is connect respectively with secondary current mutual inductor and collector.
The voltage compensation module includes fining multi gear position transformer, manual bypass switch K2, compensating switch K1, rises
Drop switching switch KMA2, auto by pass switch KMA1 and eight tap changer KMA3 ~ KMA10, the fining multi gear position
Transformer switches switch KMA2, auto by pass switch KMA1 and eight with manual bypass switch K2, compensating switch K1, lifting respectively
A tap changer KMA3 ~ KMA10 connection.
The main control module further comprises several switch input interfaces and switch output interface, and the switch input connects
Mouth is opened with compensating switch K1, manual bypass switch K2, lifting switching switch KMA2, the auto by pass in voltage compensation module respectively
Close KMA1 and eight tap changer KMA3 ~ KMA10 auxiliary contact be connected, the switch output interface respectively with voltage
Lifting switching switch KMA2, auto by pass switch KMA1 and eight tap changer KMA3 ~ KMA10 connections in compensating module.
The main control module is connect by 485 communication wires with reactive compensation module.
It further includes single-phase lightning arrestor FV, and the single-phase lightning arrestor FV is mounted between input terminal and voltage compensation module
Route on.
The utility model has the beneficial effects that providing a kind of terminal voltage fining regulator, pass through lifting switching switch
KMA2 switches over boosting and decompression mode, realizes that fining multi gear position transformer boosting shelves and decompression shelves refine multi gear position
It adjusts, voltage regulating effect is good, and transformer is at low cost, needs to open voltage compensation module from system break automatically when pressure regulation, nothing
Excess loss, low in energy consumption, master control scheduling and switching high reliablity, and can directly efficiently solve end in rural power grids
The too low problem of low pressure ensures resident's normal power supply, solves at present using change main transformer of transformer substation load tap changer
Voltage regulating mode, it cannot be guaranteed that the problem of voltage of all routes gets a promotion, meanwhile, it also solves using switched capacitor
Voltage regulating mode applicable surface is limited, range of regulation is small, to because power supply line it is too long caused by voltage low adjustment effect is undesirable asks
Topic has good practicability.
Detailed description of the invention
Fig. 1 is the block diagram of the utility model；
Fig. 2 is that the utility model is electrically connected schematic diagram；
Fig. 3 is the connection figure of master control module switch output interface and voltage compensation module.
Specific embodiment
A kind of voltage regulator, including main control module, voltage compensation module and reactive compensation module, the master control mould
Block is connect with voltage compensation module and reactive compensation module respectively, the main control module by 485 communication wires with it is idle
Compensating module connection.
The reactive compensation module includes secondary current mutual inductor, collector and intelligent capacitor, the intelligent capacitor
It is connect respectively with secondary current mutual inductor and collector, the secondary current mutual inductor is connect with intelligent capacitor, in conjunction with intelligence
The sampling functions of capacitor itself can carry out the acquisition of voltage and current signals on route；Intelligent capacitor and collector pass through 485
Communication wire is attached, and the intelligent capacitor is electric by voltage and current signals, idle amount, capacitor investment state, intelligence
Hold operating status and alarm status is sent to collector, the collector can show corresponding state, while can will believe
Breath sends main control module to.
The voltage compensation module includes fining multi gear position transformer, manual bypass switch K2, compensating switch K1, rises
Drop switching switch KMA2, auto by pass switch KMA1 and eight tap changer KMA3 ~ KMA10, the fining multi gear position
Transformer switches switch KMA2, auto by pass switch KMA1 and eight with manual bypass switch K2, compensating switch K1, lifting respectively
A tap changer KMA3 ~ KMA10 connection.
It further includes single-phase lightning arrestor FV, and the single-phase lightning arrestor FV is mounted between input terminal and voltage compensation module
Any one phase line on, whole device is protected.
Auto by pass switch KMA1 is the contactor of normally opened normally closed (1NO/1NC) type, can control it by main control module
Bypass is automatically switched to, without voltage compensation, normally-closed contact connects the both ends of transformer output, not can be carried out voltage benefit at this time
It repays, normally opened contact is connected to the output end of compensating switch K1, and KMA1 is in default conditions, no pressure regulation effect；When KMA1 movement,
In voltage compensation line attachment, pressure regulation can be carried out according to gear.
As shown in Fig. 2, the lifting switching switch KMA2 is the contactor of two normally opened two normally closed (2NO/2NC) types, it can
Realize boosting and decompression mode switching, " 2 " and " 4 " interface of contactor is all connected to the output end of KMA1 can after KMA1 movement
It is connected into main line Ai-Ao；R2 and Interface R4 are all connected to main line N；" 1 " and R1 interface are all connected to the output of KMA3 ~ KMA10
End；" 3 " and Interface R3 are all connected to the output common end of fining multi gear position transformer.
For the lifting switching switch KMA2 in default conditions, KMA3 ~ KMA10 output end is connected to main line Ai-Ao, and
Common end is connected to main line N；In KMA2 movement, KMA3 ~ KMA10 output end is connected to main line N, and common end is connected to
Main line Ai-Ao, thus can be double by the gear for refining multi gear position transformer, and 2.5% ~ 20% is adjusted, and every 2.5% is one grade, point
For boosting and decompression mode, totally 16 gears are exported, and transformer cost is reduced under identical function.
Fining multi gear position transformer, can carry out the adjusting of 8 gear voltages, and the input terminal of first winding is connected to compensation
The output end of switch K1, manual bypass switch K2 is in parallel with first winding, common to access in main line A.Voltage gear includes rising
Pressure and decompression mode, totally 16 grades, specific as follows:
(1) for the lifting switching switch KMA2 described in default conditions, voltage compensation module is in boost mode, described
Tap changer KMA3, KMA4, KMA5, KMA6, KMA7, KMA8, KMA9, KMA10 are respectively closed, then voltage promote 2.5% respectively,
5%, 7.5%, 10%, 12.5%, 15%, 17.5,20%, totally 8 grades；When appearing in multiple switch closure simultaneously, with the high shelves that boost
Subject to position, for example, when KMA3 and KMA4 are closed at, then voltage increase 5%.
(2) when lifting switching switch KMA2 movement, voltage compensation module is in decompression mode, the tap changer
KMA3, KMA4, KMA5, KMA6, KMA7, KMA8, KMA9, KMA10 are respectively closed, then voltage decline 2.5% respectively, 5%, 7.5%,
10%, 12.5%, 15%, 17.5,20%, totally 8 grades；When appearing in multiple switch closure simultaneously, it is subject to and declines high gear, example
Such as, when KMA3 and KMA4 are closed at, then voltage decline 5%.
The main control module further comprises several switch input interfaces and switch output interface, and the switch input connects
Mouth is opened with compensating switch K1, manual bypass switch K2, lifting switching switch KMA2, the auto by pass in voltage compensation module respectively
The auxiliary contact for closing KMA1 and eight tap changer KMA3 ~ KMA10 are connected, and connection type is generally one-to-one connection,
I.e. each corresponding input interface of auxiliary contact, convenient for monitoring the state of each switch, to control more promptly and accurately.It is a pair of
Although one connection type can be monitored each switch state, many switch input quantity resources also consumed, so
It can voluntarily select according to the actual situation, provide the connection type of three input of one kind, i.e., by auxiliary contact one end of KMA2 ~ KMA10
It is uniformly connected to the input interface S0 of main control module, the other end of KM2 is connected to the input interface S2 of main control module, by KMA3
The other end of ~ KMA10 is connected to the input interface S1 of main control module, this connection type can be confirmed and currently open with the presence or absence of pressure regulation
It closes conjunction and device is currently at boosting shelves and is still depressured shelves.
It is switched as shown in figure 3, the switch output interface L1 ~ L10 switches with the lifting in voltage compensation module respectively
Backward dioded DA1 ~ DA10 is distinguished in KMA2, auto by pass switch KMA1 and eight tap changer KMA3 ~ KMA10 connections
It is parallel to the both ends tap changer KMA1 ~ KMA10.
The manual bypass switch K2 is connected between the main contact of fining multi gear position transformer, and is connected to main line
In the Ai-Ao of road, it is used cooperatively with the compensating switch K1, it can be achieved that voltage compensation and reactive compensation put into or cut off simultaneously system
System, or reactive compensation is individually put into, include the following three types combination:
(1) pressure regulation and reactive compensation, K2 are disconnected, K1 closure；
(2) pure reactive compensation, K2 closure；
(3) without any compensation, K2 is disconnected, and K1 is disconnected.
Claims (5)
1. a kind of voltage regulator, it is characterised in that: including main control module, voltage compensation module and reactive compensation module, institute
The main control module stated is connect with voltage compensation module and reactive compensation module respectively；It further includes single-phase lightning arrestor FV, the list
Phase arrester FV is mounted on the route between input terminal and voltage compensation module.
2. a kind of voltage regulator according to claim 1, it is characterised in that: the reactive compensation module includes two
Primary current mutual inductor, collector and intelligent capacitor, the intelligent capacitor are connect with secondary current mutual inductor and collector respectively.
3. a kind of voltage regulator according to claim 1, it is characterised in that: the voltage compensation module includes essence
Refine multi gear position transformer, manual bypass switch K2, compensating switch K1, lifting switching switch KMA2, auto by pass switch KMA1
And eight tap changer KMA3 ~ KMA10, the fining multi gear position transformer respectively with manual bypass switch K2, compensation
Switch K1, lifting switching switch KMA2, auto by pass switch KMA1 and eight tap changer KMA3 ~ KMA10 connections.
4. a kind of voltage regulator according to claim 1, it is characterised in that: if the main control module further comprises
Dry switch input interface and switch output interface, the switch input interface respectively with the compensating switch in voltage compensation module
K1, manual bypass switch K2, lifting switching switch KMA2, auto by pass switch KMA1 and eight tap changer KMA3 ~ KMA10
Auxiliary contact be connected, the switch output interface respectively in voltage compensation module lifting switching switch KMA2, oneself
Dynamic by-pass switch KMA1 and eight tap changer KMA3 ~ KMA10 connections.
5. a kind of voltage regulator according to claim 1, it is characterised in that: the main control module is logical by 485
News connecting line is connect with reactive compensation module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821395683.5U CN209233471U (en) | 2018-08-28 | 2018-08-28 | A kind of voltage regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821395683.5U CN209233471U (en) | 2018-08-28 | 2018-08-28 | A kind of voltage regulator |
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| Publication Number | Publication Date |
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| CN209233471U true CN209233471U (en) | 2019-08-09 |
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| CN201821395683.5U Active CN209233471U (en) | 2018-08-28 | 2018-08-28 | A kind of voltage regulator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088411A (en) * | 2018-08-28 | 2018-12-25 | 贵州电网有限责任公司 | A kind of terminal voltage fining regulator |
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2018
- 2018-08-28 CN CN201821395683.5U patent/CN209233471U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088411A (en) * | 2018-08-28 | 2018-12-25 | 贵州电网有限责任公司 | A kind of terminal voltage fining regulator |
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