CN103840466A - Tuning type reactive power compensation electrical cabinet - Google Patents
Tuning type reactive power compensation electrical cabinet Download PDFInfo
- Publication number
- CN103840466A CN103840466A CN201410124497.8A CN201410124497A CN103840466A CN 103840466 A CN103840466 A CN 103840466A CN 201410124497 A CN201410124497 A CN 201410124497A CN 103840466 A CN103840466 A CN 103840466A
- Authority
- CN
- China
- Prior art keywords
- capacitor
- reactive power
- power compensation
- low
- fuse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- Y02E40/40—Arrangements for reducing harmonics
Abstract
The invention discloses a tuning type reactive power compensation electrical cabinet. The tuning type reactive power compensation electrical cabinet comprises a bus and a low-voltage busbar, wherein the bus is connected with the low-voltage busbar through a fusion type isolating switch K and a current transformer TA in sequence, a first reactive power compensation circuit, a second reactive power compensation circuit and a grounded lightning arrester F are connected on the low-voltage busbar in parallel in sequence, the first reactive power compensation circuit comprises a fuse FU1, a connector KM1, a thermal relay KH1, a choking coil L1 and a capacitor C1 which are connected in series in sequence, a capacitor C2 and a capacitor C3 which are connected in series are connected to the capacitor C1 in parallel, and the fuse FU1 is connected to the low-voltage busbar. The tuning type reactive power compensation electrical cabinet has the advantages that the tuning frequency of the electrical cabinet is lower than the frequency of the lowest subharmonic generated in a power grid, and when the harmonic frequency is sensuous, harmonic waves can be prevented from being amplified, and generation of the harmonic waves is avoided.
Description
Technical field
The present invention relates to the regulator cubicle field of electric power system, particularly, relate to a kind of tuning type reactive power compensation regulator cubicle.
Background technology
In recent years, nonlinear load is widely used as frequency converter, air-conditioning, motor, fluorescent lamp, battery charger etc., produces a large amount of harmonic current injections in electrical network.The traditional approach of realizing reactive power compensation in electric power system is shunt capacitor.But in the larger system of harmonic pollution, simple shunt capacitor can not well play a role.Shunt capacitor has amplification to upper of a shoe, and parallel resonance easily occurs, and the electric current and voltage of system is distorted; And harmonic current is superimposed upon on capacitor, the effective current of capacitor is increased, make the increase of output power, temperature raises.It is impossible in modern power network, there is no harmonic voltage and harmonic current completely, and what how to prevent harmonic wave amplification, minimizing resonance is very important.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of tuning type reactive power compensation regulator cubicle, the tuned frequency of this regulator cubicle is lower than the frequency of the minimum subharmonic of the generation in electrical network, in the time of harmonic frequency, be perception, can prevent the amplification of harmonic wave, avoid the generation of harmonic wave.
The present invention addresses the above problem adopted technical scheme:
A kind of tuning type reactive power compensation regulator cubicle, comprise bus and low-voltage bus-bar, described bus is connected with low-voltage bus-bar by fuse type disconnector K summation current transformer TA successively, on described low-voltage bus-bar, be parallel with successively the first reactive power compensation circuit, the lightning arrester F of the second reactive power compensation circuit and ground connection, the first described reactive power compensation circuit comprises the fuse FU1 of series connection successively, contactor KM1, thermal relay KH1, choke L1 and capacitor C 1, in described capacitor C 1, be parallel with the capacitor C 2 and the capacitor C 3 that are in series, described fuse FU1 is connected on low-voltage bus-bar.
As preferably, the second described reactive power compensation circuit comprises the fuse FU2 being connected on low-voltage bus-bar, on fuse FU2, be in series with successively contactor KM2, thermal relay KH2, choke L2 and capacitor C 4, in described capacitor C 4, be parallel with the capacitor C 5 and the capacitor C 6 that are in series.
Further, the capacitance of described capacitor C 1, capacitor C 2 and capacitor C 3 equates, the capacitance of capacitor C 4, capacitor C 5 and capacitor C 6 equates, the capacitance of capacitor C 1 and capacitor C 4 is not etc.
To sum up, the invention has the beneficial effects as follows:
1, circuit structure of the present invention, adopts the series connection method of choke and capacitor, makes tuned frequency in the loop humorous wave frequency lower than the low order producing in electrical network, and harmonic frequency is absorbed to elimination; Improve the power factor (PF) of network system; When harmonic frequency is perception, can prevent that harmonic wave from amplifying, avoid the generation of resonance, also can avoid the current effective value of electric capacity to increase, avoid temperature to raise, improve transmission of electricity fail safe, equipment and load are protected.
2, the present invention can reduce the effective value of electric current, because the loss of circuit is little, can carry power transmission efficiency.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the present invention.
Mark and corresponding parts title in accompanying drawing: 1, bus; 2, low-voltage bus-bar.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is done to detailed description further, but embodiments of the present invention are not limited to this.
Embodiment 1:
The tuning type reactive power compensation of one regulator cubicle as shown in Figure 1, on bus 1, connect successively fuse type disconnector K, current transformer TA and low-voltage bus-bar 2, on low-voltage bus-bar 2, be parallel with successively the lightning arrester F of the first reactive power compensation circuit, the second reactive power compensation circuit and ground connection, the first reactive power compensation circuit comprises fuse FU1, contactor KM1, thermal relay KH1, choke L1 and the capacitor C 1 of series connection successively, in capacitor C 1, be parallel with the capacitor C 2 and the capacitor C 3 that are in series, fuse FU1 is connected on low-voltage bus-bar 2.In the present embodiment, the circuit structure of the second reactive power compensation circuit can be identical with the circuit structure of the first reactive power compensation circuit, also can be different.In practice, contactor can be selected B series, as B50C, B30C; Thermal relay can be selected JR36 series, as JR36-63; Electric capacity can be selected unidirectional filter capacitor, as XTLC30; Choke can adopt YH.05-LN142; Fuse can adopt XRNP1-10; Current transformer can adopt LZZBJ9-36; Lightning arrester can adopt Y10W.Bus 1 is together connected in electrical network with load, and in different distribution systems, harmonic spectrum characteristic is different, in electrical network, contain 3 times, 5 times or above harmonic wave, in the electrical network of 50HZ, 3 subfrequencies are 150HZ, make tuned frequency in loop lower than minimum subfrequency 150HZ.According to
tuned frequency is calculated.The operation principle of the present embodiment and process are: in the various nonlinear load access electrical networks in electrical network, and produce various harmonic voltages and harmonic current.Tuning type reactive power compensation circuit in the present invention is by fuse type disconnector K parallel connection and circuit, and the harmonic wave that load is produced absorbs elimination.Fuse type disconnector K, can be circuit and does short-circuit protection effect as isolated from power at circuit, and circuit is protected.Current transformer is connected in circuit, is convenient to connect with outside instrument load, is convenient to personnel circuit data is measured.Its electric current of fuse exceeded after certain value a period of time, and the heat himself producing makes melt fusing, and open circuit, utilizes its this characteristic to protect tuning type reactive power compensation circuit, as short circuit and overcurrent protection, also as second protection of the present invention.Contactor is realized the power on/off of circuit from being dynamically connected and disconnecting.Thermal relay is realized overload protection, is also a safeguard measure of circuit.Whole circuit adopts multiple protection measure, guarantees the security of operation of electrical network, ensures people's Electrical Safety.The filter circuit that capacitor C 1, capacitor C 2, capacitor C 3 form and choke L1 together form the main circuit of tuning type reactive power compensation circuit, and it absorbs elimination according to the minimum subfrequency producing in load to harmonic frequency.In the time that harmonic wave acts on electrical network, circuit of the present invention can prevent the amplification of harmonic wave, avoids the generation of harmonic wave, also can avoid the current effective value of electric capacity to increase, and avoids temperature to raise, and improves transmission of electricity fail safe, and equipment and load are protected.Before compensation not, power factor COS Φ is 0.68, and in actual motion of the present invention, power factor reaches 0.96, and required total compensation capacity reaches 480Kva, has reduced the aberration rate of power network current.
Embodiment 2:
The tuning type reactive power compensation of one regulator cubicle as shown in Figure 1, the present embodiment has done refinement to the second reactive power compensation circuit on the basis of embodiment 2, the circuit structure of the second reactive power compensation circuit can be identical with the circuit structure of the first reactive power compensation circuit, the second reactive power compensation circuit comprises the fuse FU2 being connected on low-voltage bus-bar 2, on fuse FU2, be in series with successively contactor KM2, thermal relay KH2, choke L2 and capacitor C 4, in described capacitor C 4, be parallel with the capacitor C 5 and the capacitor C 6 that are in series.
Embodiment 3:
The tuning type reactive power compensation of one regulator cubicle as shown in Figure 1, the present embodiment is on the basis of above-described embodiment, the capacitance of capacitor C 1, capacitor C 2 and capacitor C 3 is equated, the capacitance of capacitor C 4, capacitor C 5 and capacitor C 6 is equal, and the capacitance of the electric capacity in capacitance and second reactive power compensation circuit of the electric capacity in unequal i.e. first reactive power compensation circuit of capacitance of capacitor C 1 and capacitor C 4 is unequal.According to
to absorb elimination to minimum subharmonic in circuit, tuned frequency in its loop is lower than the humorous wave frequency of the low order producing in electrical network, owing to containing in electrical network 3 times, 5 times or above harmonic wave, utilize the capacitance of the electric capacity in capacitance and second reactive power compensation circuit of the electric capacity in the first reactive power compensation circuit unequal, make its harmonic wave that can eliminate different frequencies, the accommodation of increasing circuit.
As mentioned above, can realize preferably the present invention.
Claims (3)
1. a tuning type reactive power compensation regulator cubicle, comprise bus (1) and low-voltage bus-bar (2), it is characterized in that: described bus (1) is connected with low-voltage bus-bar (2) by fuse type disconnector K summation current transformer TA successively, on described low-voltage bus-bar (2), be parallel with successively the first reactive power compensation circuit, the lightning arrester F of the second reactive power compensation circuit and ground connection, the first described reactive power compensation circuit comprises the fuse FU1 of series connection successively, contactor KM1, thermal relay KH1, choke L1 and capacitor C 1, in described capacitor C 1, be parallel with the capacitor C 2 and the capacitor C 3 that are in series, described fuse FU1 is connected on low-voltage bus-bar (2).
2. the tuning type reactive power compensation of one according to claim 1 regulator cubicle, it is characterized in that: the second described reactive power compensation circuit comprises the fuse FU2 being connected on low-voltage bus-bar (2), on fuse FU2, be in series with successively contactor KM2, thermal relay KH2, choke L2 and capacitor C 4, in described capacitor C 4, be parallel with the capacitor C 5 and the capacitor C 6 that are in series.
3. the tuning type reactive power compensation of one according to claim 2 regulator cubicle, it is characterized in that: the capacitance of described capacitor C 1, capacitor C 2 and capacitor C 3 equates, the capacitance of capacitor C 4, capacitor C 5 and capacitor C 6 equates, the capacitance of capacitor C 1 and capacitor C 4 is not etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410124497.8A CN103840466A (en) | 2014-03-31 | 2014-03-31 | Tuning type reactive power compensation electrical cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410124497.8A CN103840466A (en) | 2014-03-31 | 2014-03-31 | Tuning type reactive power compensation electrical cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103840466A true CN103840466A (en) | 2014-06-04 |
Family
ID=50803706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410124497.8A Pending CN103840466A (en) | 2014-03-31 | 2014-03-31 | Tuning type reactive power compensation electrical cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103840466A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384943A (en) * | 2016-10-15 | 2017-02-08 | 国网山东省电力公司寿光市供电公司 | Novel highly integrated comprehensive agricultural plate |
| CN108023357A (en) * | 2016-11-20 | 2018-05-11 | 国网江西省电力公司赣东北供电分公司 | A kind of new reactive power automatic compensation device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202268701U (en) * | 2011-09-21 | 2012-06-06 | 安徽广力电气科技发展有限公司 | Reactive power consumption system for low-voltage power distribution cabinet |
| CN202373974U (en) * | 2011-12-02 | 2012-08-08 | 山东科能电气设备有限公司 | Harmonic processing device of low-voltage power grid |
| CN202586356U (en) * | 2012-04-05 | 2012-12-05 | 滁州利华电子有限公司 | Reactive compensation system for high-voltage ring main unit |
| CN203787959U (en) * | 2014-03-31 | 2014-08-20 | 成都振中电气有限公司 | Tuning reactive power compensation electrical cabinet |
-
2014
- 2014-03-31 CN CN201410124497.8A patent/CN103840466A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202268701U (en) * | 2011-09-21 | 2012-06-06 | 安徽广力电气科技发展有限公司 | Reactive power consumption system for low-voltage power distribution cabinet |
| CN202373974U (en) * | 2011-12-02 | 2012-08-08 | 山东科能电气设备有限公司 | Harmonic processing device of low-voltage power grid |
| CN202586356U (en) * | 2012-04-05 | 2012-12-05 | 滁州利华电子有限公司 | Reactive compensation system for high-voltage ring main unit |
| CN203787959U (en) * | 2014-03-31 | 2014-08-20 | 成都振中电气有限公司 | Tuning reactive power compensation electrical cabinet |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384943A (en) * | 2016-10-15 | 2017-02-08 | 国网山东省电力公司寿光市供电公司 | Novel highly integrated comprehensive agricultural plate |
| CN108023357A (en) * | 2016-11-20 | 2018-05-11 | 国网江西省电力公司赣东北供电分公司 | A kind of new reactive power automatic compensation device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Baitha et al. | A comparative analysis of passive filters for power quality improvement | |
| CN102904264B (en) | A kind of High Voltage and Passive Automatic Compensation Device | |
| Gerçek et al. | Design, implementation, and operation of a new C-type 2nd harmonic filter for electric arc and ladle furnaces | |
| CN103840466A (en) | Tuning type reactive power compensation electrical cabinet | |
| CN203787959U (en) | Tuning reactive power compensation electrical cabinet | |
| CN104051972B (en) | A kind of 35kV combined transformer for photovoltaic generation | |
| CN103219734B (en) | A kind of intelligent type reactive compensation system | |
| CN202712800U (en) | Adjustable tuned filter direct-current ice-melting device | |
| CN202002981U (en) | General test model of flexible AC power transmission FACTS device | |
| CN108808729A (en) | A kind of novel circuit configuration of electric main power connection in power plant | |
| CN100384046C (en) | High voltage reactive-load compensation complete equipment | |
| CN207612066U (en) | A kind of high-pressure reactive compensation device | |
| CN202997580U (en) | Silicon controlled rectifier RC protection loop in TSC apparatus | |
| CN207303998U (en) | A kind of line facility arrester | |
| CN208723554U (en) | A kind of Intelligent projection switch capacitor compensation cabinet | |
| CN202797991U (en) | A 10kV line intelligent reactive power compensation device | |
| CN201766358U (en) | Monopole type combined overvoltage protector | |
| CN202218001U (en) | Intelligent terminal modularized integration protector | |
| CN202353213U (en) | Series-parallel hybrid passive-power filtering and protecting device | |
| CN205248019U (en) | Arrester for electric power | |
| CN205407273U (en) | Multi -functional protection type low -voltage reactive power compensator | |
| CN204465003U (en) | A kind of monomer intelligent electric power compensation condenser | |
| CN205123273U (en) | Mine -used flameproof high pressure reactive power automatic compensation device | |
| CN203135434U (en) | Neutral point virtual grounding device | |
| CN201774243U (en) | Digital capacitor protecting device with harmonic protecting function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140604 |