CN205195267U - Cascade compensation device - Google Patents
Cascade compensation device Download PDFInfo
- Publication number
- CN205195267U CN205195267U CN201520827696.5U CN201520827696U CN205195267U CN 205195267 U CN205195267 U CN 205195267U CN 201520827696 U CN201520827696 U CN 201520827696U CN 205195267 U CN205195267 U CN 205195267U
- Authority
- CN
- China
- Prior art keywords
- branch road
- reactor
- compensation device
- switch
- capacitor
- 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.)
- Expired - Fee Related
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 25
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 abstract 3
- 230000001629 suppression Effects 0.000 abstract 3
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides a cascade compensation device, it includes resistance card, condenser, switch and reactor, resistance card and capacitor parallel form the electric capacity branch road, and electric capacity branch road and reactor concatenate forms the oscillation suppression branch road, and oscillation suppression branch road both ends and hookup have the switch. This cascade compensation device optimizes the improvement to present traditional cascade compensation device topological structure, moves the reactor to the condenser by from the switch branch road, together puts on the main tributary way, has reduced the assembly degree of difficulty, has reduced the input of newly -increased branch road simultaneously, and the cost will significantly reduce in actual assembly, after the generating circuit trouble, the reactor that is located same branch road with the condenser can more effectively carry out oscillation suppression to the capacitor discharge electric current simultaneously, when this cascade compensation device came into operation, because the existence of reactor, impulse current reduced, can play effectual guard action to the condenser simultaneously.
Description
Technical field
The utility model belongs to technical field of power systems, is specifically related to a kind of series compensation device that can improve transmitting capacity of the electric wire netting and voltage stability.
Background technology
Existing series compensation device general topology structure as shown in Figure 1, switch 3 and reactor 4 are connected in series, its two ends are also connected with capacitor 2, also and be connected with resistance 1, when normally working, switch 3 is off state, electric current is only by capacitor 2, capacitor 2 and reactor 4 inductance offset, and reduce line drop, shorten the electrical distance of generators and loads; When circuit is short-circuited fault, capacitor 2 discharges, and resistance 1 plays the effect of capacitor for voltage protection 2; short circuit current flows through from resistance 1 place branch road; then switch 3 closes, and short circuit current flows through from reactor 4 place branch road, thus the safety of protection series compensation device.
There is following shortcomings in it: in Practical Project is installed, and reactor 4 and switch 3 add at same branch road equips cost and difficulty, causes waste; After the fault that is short-circuited, the position residing for reactor 4 well can not be carried out vibration to capacitor 2 discharging current and be suppressed, and voltage drop speed is slower; When whole series compensation device comes into operation, energising can have certain impact to capacitor 2 instantaneously, easily causes capacitor 2 damage.
Utility model content
For above-mentioned defect, the utility model aims to provide a kind of novel series compensation device after improving.
The technical scheme of this series compensation device is achieved in that
Described series compensation device, comprises resistor disc, capacitor, switch and reactor, and described resistor disc and capacitor compose in parallel capacitive branch, and capacitive branch and reactor compose in series vibration and suppress branch road, and vibration suppresses branch road two ends and is connected with switch.
Preferably, described switch adopts Quick eddy drive unit.
Preferably, described resistor disc is zinc oxide resistance sheet.
Preferably, described reactor 4 resistance value is 0.04 Ω, and inductance value is not less than 200mH.
Preferably, described switch 3 is not less than 63kA by upper current limit value.
Series compensation device provided by the utility model, improvement is optimized to existing conventional serial compensation arrangement topological structure, reactor is moved to by capacitor from switching branches, together be placed on main branch road, decrease assembly difficulty, decrease the input of newly-increased branch road simultaneously, will cost be greatly reduced in practical set; Simultaneously when after circuit for generating fault, the reactor being positioned at same branch road with capacitor more effectively can carry out vibration to capacitor discharge current to be suppressed; Simultaneously when this series compensation device comes into operation, due to the existence of reactor, impulse current reduces, and can play effective protective effect to capacitor.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is existing series compensation device topology diagram;
Fig. 2 is series compensation device topology diagram described in the utility model.
Description of reference numerals:
In figure: 1. resistor disc, 2. capacitor, 3. switch, 4. reactor.
Embodiment
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
Series compensation device described in the utility model, as shown in Figure 2, comprise resistor disc 1, capacitor 2, switch 3 and reactor 4, described resistor disc 1 and capacitor 2 compose in parallel capacitive branch, and preferably, described resistor disc 1 is zinc oxide resistance sheet, capacitive branch and reactor 4 compose in series vibration and suppress branch road, vibration suppresses branch road two ends and is connected with switch 3, preferably, and the Quick eddy drive unit that described switch 3 adopts reaction speed fast.
It is other that reactor 4 is moved to capacitor 2 from switching branches by this series compensation device, is together placed on main branch road, decreases assembly difficulty, decrease the input of newly-increased branch road simultaneously, will greatly reduce cost in practical set; When after circuit for generating fault, switch 3 closes, and the loop of capacitor 2, switch 3 and reactor 4 composition more effectively can be carried out vibration to capacitor 2 discharging current and be suppressed; Simultaneously when this series compensation device comes into operation, due to the existence of reactor 4, impulse current reduces, and can play effective protective effect to capacitor 2.
Because reactor 4 generally only has 0.04 Ω, during normal work, electric current is about 300A, on it, pressure drop is between 1V to 5V, substantially negligible, when being short-circuited fault, short circuit current is generally not more than 20kA, and switch 3 ability generally has 63kA, thus the switching branches after improving can close when fault completely, preferably, described reactor 4 resistance value is 0.04 Ω, and inductance value is not less than 200mH, switch 3 is not less than 63kA by upper current limit value, to meet the normal work requirements of electric power system.
It should be noted that, the symbol such as above-mentioned Ω, A (kA), V, mH represents linear module ohm of resistance value, the linear module ampere (kilo-ampere) of current value, the linear module volt of magnitude of voltage and the linear module milihenry of inductance value respectively.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (5)
1. a series compensation device, comprise resistor disc (1), capacitor (2), switch (3) and reactor (4), it is characterized in that: described resistor disc (1) and capacitor (2) compose in parallel capacitive branch, capacitive branch and reactor (4) compose in series vibration and suppress branch road, and vibration suppresses branch road two ends and is connected with switch (3).
2. series compensation device according to claim 1, is characterized in that: described switch (3) adopts Quick eddy drive unit.
3. series compensation device according to claim 1, is characterized in that: described resistor disc (1) is zinc oxide resistance sheet.
4. series compensation device according to claim 1, is characterized in that: described reactor (4) resistance value is 0.04 Ω, and inductance value is not less than 200mH.
5. series compensation device according to claim 1 and 2, is characterized in that: described switch (3) is not less than 63kA by upper current limit value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520827696.5U CN205195267U (en) | 2015-10-22 | 2015-10-22 | Cascade compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520827696.5U CN205195267U (en) | 2015-10-22 | 2015-10-22 | Cascade compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205195267U true CN205195267U (en) | 2016-04-27 |
Family
ID=55788223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520827696.5U Expired - Fee Related CN205195267U (en) | 2015-10-22 | 2015-10-22 | Cascade compensation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205195267U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212293A (en) * | 2018-10-18 | 2019-01-15 | 中国电力科学研究院有限公司 | A kind of power supply type voltage transformer and application method with voltage measurement function |
-
2015
- 2015-10-22 CN CN201520827696.5U patent/CN205195267U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212293A (en) * | 2018-10-18 | 2019-01-15 | 中国电力科学研究院有限公司 | A kind of power supply type voltage transformer and application method with voltage measurement function |
| CN109212293B (en) * | 2018-10-18 | 2021-04-02 | 中国电力科学研究院有限公司 | Power supply type voltage transformer with voltage metering function and use method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20160427 Termination date: 20171022 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |