CN206023228U - Intelligent capacitor compensation device - Google Patents
Intelligent capacitor compensation device Download PDFInfo
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- CN206023228U CN206023228U CN201621045742.7U CN201621045742U CN206023228U CN 206023228 U CN206023228 U CN 206023228U CN 201621045742 U CN201621045742 U CN 201621045742U CN 206023228 U CN206023228 U CN 206023228U
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- 239000003990 capacitor Substances 0.000 title claims abstract description 63
- 238000012545 processing Methods 0.000 claims abstract description 18
- 239000002131 composite material Substances 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims description 17
- 230000000295 complement effect Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 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
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Abstract
The utility model discloses a kind of intelligent capacitor compensation device, including housing, CPU processing modules, sample circuit, exchange input module, power module, capacitor compensation module, composite switch circuit and RS485 interfaces is provided with the housing, three-phase voltage is connected with sample circuit through exchanging input module, and the power module, capacitor compensation module, sample circuit, composite switch circuit and RS485 interfaces are connected with the CPU processing modules；The capacitor compensation module includes phase splitting compensation module and three-phase total compensation module.This utility model can adapt to the situation of change of live load, have the advantages that compensation effect is good, low in energy consumption, reliability is high, realize the safe switching of low-voltage reactive power compensation capacitor zero passage and perfect defencive function.
Description
Technical field
This utility model is related to reactive power compensation technology field, and in particular to a kind of intelligent capacitor compensation device.
Background technology
In power system, voltage and frequency are to weigh two most basic most important indexs of the quality of power supply, for guaranteeing
The normal operation of power system, supply voltage and frequency must be stablized in certain scope.The control of frequency and active power
Control closely related, and one of voltage-controlled important method is the reactive power to power system is controlled.Idle work(
Rate is all highly important to the operation of electric power system, when reactive power is not enough, will reduce the active power output of electromotor,
Decline the utilization rate of power-supply device, and increase the loss of voltage of power circuit, cause the quality of power supply to decline, also make power supply
System loss is increased, and causes the loss of the energy.At present, the power factor of China's electrical network is generally relatively low, cause grid line loss compared with
Greatly.There is more inductive load in power distribution network, the electric energy of motor consumption accounts for more than the 70% of national power consumption, and big portion
Point motor in the design and use due to its power factor often low, general only 0.7 or so.These perception are negative
Carrying operationally needs to absorb power-balance of the substantial amounts of reactive power to keep system.In addition, with modern power electronic skill
The development of art, various power electronic systems, especially great power conversion circuit, frequency conversion system give industry in the extensive application of power system
Huge convenience is brought with the transformation of electrical energy of electric power enterprise, and is widely used in industrial processes, some are even
Oneself becomes the key link of large industrial enterprise.But these system power factors are often very low, bring added burden simultaneously to electrical network
Affect power supply quality.
For ensureing that the power efficiency of electromotor, usual system power supply provide only a small amount of reactive power, substantial amounts of idle work(
Rate needs to compensate in change (with) at different levels power station (institute).Improve power factor of electric network energetically, reduce line loss, energy saving is dug
The potentiality of pick generating equipment, are the trend of current power net development.Traditional reactive power dynamic compensation system is synchronous phase modulation
Machine（synchronous compensator）, it is the synchronous motor for being specifically used to produce reactive power, in overexcitation or underexcitation
Under the different situations of magnetic, different size of capacitive or lagging reactive power can be sent respectively, synchronous capacitor is rotation due to it
Turning point hits, and therefore loss and noise are all larger, and operation maintenance is complicated, and response speed is slow, cannot fit under many circumstances
Answer the requirement of fast reactive Power Control.The patent of invention of Publication No. CN 102638050 discloses a kind of reactive power compensator
And compensation method, add combined network communication module and RS485 interfaces, and supporting switch-capacitor on reactive power controller
Device combination switch adds combined network communication module and RS485 interfaces, by communication module and corresponding communications protocol, passes through
The concatenation of RS485 interfaces, reaches reactive power controller and switch capacitor combination switch networking control, so as to realize intellectuality
Control input and excision capacitor function so that reactive power is compensated for.But the device is only capable of realizing single compensation work(
Can, it is impossible to adapt to the complicated situation of change of live load.
Utility model content
In view of this, the purpose of this utility model is for the deficiencies in the prior art, there is provided a kind of intelligent capacitor compensation
Device, can adapt to the situation of change of live load, have the advantages that compensation effect is good, low in energy consumption, reliability is high.
For solving above-mentioned technical problem, technical solution adopted in the utility model is as follows：
A kind of intelligent capacitor compensation device, wherein, including housing, is provided with CPU processing modules, sampling in the housing
Circuit, exchange input module, power module, capacitor compensation module, composite switch circuit and RS485 interfaces, three-phase voltage are passed through
Exchange input module is connected with sample circuit, the power module, capacitor compensation module, sample circuit, composite switch circuit
It is connected with the CPU processing modules with RS485 interfaces；The capacitor compensation module includes phase splitting compensation module and three-phase altogether
Complementary modulus block.
Preferably, the phase splitting compensation module includes that three capacitors in parallel, the three-phase total compensation module include three
The capacitor of series connection, the phase splitting compensation module are connected through two-way RS485 with the three-phase total compensation module.
Preferably, LED light and key-press module are provided with the housing；The key-press module and CPU processing modules
Connection.
Preferably, LED light display module, the LED light display module difference are additionally provided with the housing
It is connected with CPU processing modules and LED light.
Preferably, charactron is provided with the housing, the charactron is connected with the LED light display module.
Preferably, mode of operation switch is additionally provided with the housing, and the mode of operation switch is connected with CPU processing modules
Connect.
Preferably, communication module is additionally provided with the housing, the communication module is connected with CPU processing modules.
The beneficial effects of the utility model are：
Main body of this utility model with low-voltage reactive power compensation capacitor as reactive-load compensation, is primarily adapted for use in public network power distribution system
System, case change, complete cabinet, distributed board outdoor, factory's distribution system, residential area distribution system, municipal commercial building, traffic tunnel
The occasions such as distribution system.This utility model achieves low-voltage reactive power compensation capacitor zero passage and cuts thoroughly and perfect protection work(safely
Can, it is equipped with charactron and LED light display module, exchanges input module, sample circuit, serial communication module, power supply mould
Block, key-press module, composite switch circuit, two-way RS485, circuit are integrated with modern test and control, power electronics, network service, automatically
The modules such as control, power electronics, good with compensation effect, small volume is low in energy consumption, cheap, cost-effective, using flexible,
Long service life, the features such as reliability is high, has adapted to modern power network to idle requirements at the higher level.
Description of the drawings
Fig. 1 is the contour structures schematic diagram of intelligent capacitor compensation device.
Fig. 2 is the front panel schematic diagram of intelligent capacitor compensation device.
Fig. 3 is the schematic block circuit diagram of intelligent capacitor compensation device.
Fig. 4 is the electrical principle wiring diagram of intelligent capacitor compensation device.
Specific embodiment
Below in conjunction with the accompanying drawings utility model technical scheme is further illustrated：
Embodiment 1:
As Figure 1-Figure 4, this utility model includes housing, is provided with RJ485 access interface 1 and A, B, C are handed on housing
Stream control source port 2, is provided with LED 3, charactron 4, key-press module 5, mode of operation switch 6 on the front panel of housing.Shell
CPU processing module, sample circuit, exchange input module, power module, capacitor compensation module, combination switch are provided with vivo
Circuit and RS485 interfaces, three-phase voltage through exchange input module be connected with sample circuit, power module, capacitor compensation module,
Sample circuit, composite switch circuit and RS485 interfaces are connected with the CPU processing modules；Capacitor compensation module includes point
Phase compensating module and three-phase total compensation module.
Fig. 1 is the contour structures schematic diagram of intelligent capacitor compensation device, configuration RJ485 access interface 1 on housing, A,
B, C ac voltage input mouth 2.Fig. 2 intelligent capacitor compensation device front panels, mainly include LED 3, charactron 4, button
Module 5, mode of operation switch 6.
Key-press module 5：Using 4 buttons, respectively (1) " UP " key, (2) " DOWN " key, (3) " ENTER " key, (4)
" ESC " key；When information interface is checked, " UP ", " DOWN " key are used for page turn over operation.Parameter setting interface " UP " key is used for numeral
Plus-minus, " DOWN " key be used for shifting function, " ENTER " key be used for confirm fixed value modification, " ESC " key cancel fixed value modification.LED
Lamp 3：It is mainly used to show capacitor working condition, mode of operation, communications status.Charactron 4：Main display includes that data are looked into
See, capacitor information, the content that control switching, parameter is checked and set manually；Button is coordinated to carry out human computer conversation：Can be to protecting
Shield parameter, measurement parameter etc. are set.Mode of operation switch 6：According to live needs, when being tested, switch is got to
On debugging mode, parameter modification being carried out under the state, but detection data will not being uploaded, capacitor will not also enter action
Make, switch is got to capacitor in mode of operation after the completion of modification and starts normal work, capacitor can not be changed in the state
Parameter.
As shown in Figure 3, Figure 4, power module：+ 12V ,+5V ,+3.3V voltages are converted to by 380VAC.Sample circuit：Collection
Three road voltages, three road electric currents, temperature simulation amount, have 7 road sampling channels.CPU processing modules：CPU uses Floating-point DSP controller,
Dominant frequency 150MHz, CPU realize that the universal component of device and man machine interface and background communication function, DSP complete all of observing and controlling and calculate
Method and logic function.Composite switch circuit：One-way SCR and magnetic latching relay combination switch in parallel is carried out to capacitor
Switching is controlled, and voltage zero-cross puts into, and current over-zero cuts off.
As shown in figure 4, the common benefit/point benefit capacitor of intelligent capacitor compensation device configuration, uses between capacitor and capacitor
RS485 is communicated, and intelligent capacitor compensation device executes controller switching order as from equipment, when automatic as independent equipment
Main frame is switched to judge capacitor switching order.Phase splitting compensation module includes three capacitors in parallel, three-phase total compensation module bag
The capacitor of three series connection is included, phase splitting compensation module is connected through two-way RS485 with the three-phase total compensation module.Three-phase total compensation module
Two group capacitors are equipped with, capacity has（20+30）kvar、（20+20）kvar、（20+10）kvar、（15+15）kvar、（10+5）
Kvar etc., two group capacitors can be with single compensation, it is also possible to while compensation.Phase splitting compensation module is only equipped with a group capacitor, holds
Amount has 30 kvar, 20 kvar, 10kvar etc., and A, B, C three-phase of electrical network is compensated respectively.
This utility model is that one kind is installed between transformer station and user, realizes low-voltage reactive power compensation capacitor zero passage safety
Switching and the device of perfect defencive function.Possess communication function, using RS485 intelligent networkings, configure RJ45 net masks special
Online netting twine is used, multiple stage intelligent capacitor compensation device is reliably connected, MANET during work switches master slave mode, it is also possible to
Top level control device communicate, can take remote measurement, remote signalling data interaction, rule schemata adopt MODBUS communication protocols.This practicality is new
Type can be according to state modulator capacitor switchings such as the distribution network voltages, electric current, power factor, reactive power for measuring, according to nothing
Work(power shortage is compensated, the electric capacity switching cycle of identical capacity, and the electric capacity of different capabilities presses complex optimum mode switching, improves essence
Degree.This utility model has perfect defencive function, including overvoltage protection, under-voltage protection, overcurrent protection, the protection of low stream, voltage
The out-of-limit protection of harmonic wave, the out-of-limit protection of current harmonics, overheat protector etc..
Embodiment 2：
In the present embodiment, intelligent capacitor compensation device also includes memory module and communication module, memory module, communication mould
Block is connected with CPU processing modules, can the parameter such as storage switching frequency, run time, power failure data preserves.Communication
Module can adopt serial communication module, be communicated with backstage.
Finally illustrate, above example only in order to the technical solution of the utility model is described and unrestricted, this area
Other modifications or equivalent that those of ordinary skill is made to the technical solution of the utility model, without departing from this practicality
The spirit and scope of new technique scheme, all should cover in the middle of right of the present utility model.
Claims (7)
1. a kind of intelligent capacitor compensation device, it is characterised in that：Including housing, be provided with the housing CPU processing modules,
Sample circuit, exchange input module, power module, capacitor compensation module, composite switch circuit and RS485 interfaces, three-phase electricity
Pressure is connected with sample circuit through exchanging input module, the power module, capacitor compensation module, sample circuit, combination switch
Circuit and RS485 interfaces are connected with the CPU processing modules；The capacitor compensation module includes phase splitting compensation module and three
Complementary modulus block is mutually total to.
2. a kind of intelligent capacitor compensation device according to claim 1, it is characterised in that：The phase splitting compensation module bag
Three capacitors in parallel are included, the three-phase total compensation module includes the capacitor of three series connection, the phase splitting compensation module and institute
State three-phase total compensation module to connect through two-way RS485.
3. a kind of intelligent capacitor compensation device according to claim 1, it is characterised in that：It is provided with the housing
LED light and key-press module；The key-press module is connected with CPU processing modules.
4. a kind of intelligent capacitor compensation device according to claim 3, it is characterised in that：It is additionally provided with the housing
LED light display module, the LED light display module are connected with CPU processing modules and LED light respectively.
5. a kind of intelligent capacitor compensation device according to claim 4, it is characterised in that：Number is provided with the housing
Code pipe, the charactron are connected with the LED light display module.
6. a kind of intelligent capacitor compensation device according to claim 1, it is characterised in that：It is additionally provided with the housing
Mode of operation is switched, and the mode of operation switch is connected with CPU processing modules.
7. a kind of intelligent capacitor compensation device according to claim 1, it is characterised in that：It is additionally provided with the housing
Communication module, the communication module are connected with CPU processing modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621045742.7U CN206023228U (en) | 2016-09-08 | 2016-09-08 | Intelligent capacitor compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621045742.7U CN206023228U (en) | 2016-09-08 | 2016-09-08 | Intelligent capacitor compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206023228U true CN206023228U (en) | 2017-03-15 |
Family
ID=58259572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621045742.7U Active CN206023228U (en) | 2016-09-08 | 2016-09-08 | Intelligent capacitor compensation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206023228U (en) |
-
2016
- 2016-09-08 CN CN201621045742.7U patent/CN206023228U/en active Active
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| C14 | Grant of patent or utility model | ||
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