CN207021687U - A kind of Quick-type mesohigh series compensation and depth current-limiting apparatus - Google Patents
A kind of Quick-type mesohigh series compensation and depth current-limiting apparatus Download PDFInfo
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- CN207021687U CN207021687U CN201720901292.5U CN201720901292U CN207021687U CN 207021687 U CN207021687 U CN 207021687U CN 201720901292 U CN201720901292 U CN 201720901292U CN 207021687 U CN207021687 U CN 207021687U
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000010703 silicon Substances 0.000 claims abstract description 8
- 230000008033 biological extinction Effects 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
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Abstract
It the utility model is related to a kind of Quick-type mesohigh series compensation and depth current-limiting apparatus, including the controllable silicon SCR in power distribution cabinet, high-speed eddy for exiting line voltage distribution compensation branch road and current limliting branch road during system normal operation switchs K1, line voltage distribution for compensation system voltage compensates branch road, and for the current limliting branch road of limiting short-circuit current after short trouble to occur for system, the controllable silicon SCR is in parallel with high-speed eddy switch K1, the high-speed eddy switch K1 and line voltage distribution compensation branch circuit parallel connection, the line voltage distribution compensation branch road and current limliting branch circuit parallel connection.The utility model have the advantages that it is simple in construction, safe and reliable, save transformer investment and running wastage, can when system voltage is too low timely lifting system voltage；The significantly limiting short-circuit current when short trouble occurs for branch road, prevents the further expansion of short trouble scope, can realize that exiting current-limiting reactor rapidly after short trouble excision plays a part of zero loss again.
Description
Technical field
It the utility model is related to limitation circuit on power system voltage compensation and limiting short-circuit current technical field, especially one
Kind Quick-type mesohigh series compensation and depth current-limiting apparatus.
Background technology
With expanding economy, the sharp increase of power load, the quality of voltage that mesohigh long distance transmission line is brought
Problem is gradually exposed.For the less area of the density of population, radius of electricity supply is larger, and transmission line of electricity is generally longer.In early stage
In the case that load is relatively light, still met use demand by terminal voltage；But with social progress and economic development, heavy users
It is continuously increased, the pressure drop of load current on the line substantially increases, and causes the supply voltage quality severe overweight to load, load
The line end voltage having during peak only has the 80% of rated voltage, causes neighbouring industry and residential electricity consumption equipment can not be normal
Operation, can only compensate the loss of voltage of the electric energy in course of conveying can just make vast industrial and mining enterprises and resident's productive life not by
Influence.
With the sharp increase of electricity consumption power load, short trouble odds occurs for each branch road also with sharp increase, when
Short circuit occurs for a certain bar branch road under bus, and short trouble can drag down busbar voltage rapidly and cause immeasurable damage to whole piece circuit
Lose, only quick significantly limiting short-circuit current prevents the further expansion of short trouble, just can guarantee that short in downstream leg generation
It is unaffected at bus during the failure of road.The existing series compensation device of in the market does not have the effect of limiting short-circuit current.
Utility model content
The purpose of this utility model is to provide a kind of distribution induction reactance that can compensate for circuit, improves the stability of system,
Significantly limiting short-circuit current, prevent the Quick-type mesohigh series compensation and depth current limliting of the further expansion of short trouble scope
Device.
To achieve the above object, the utility model employs following technical scheme：A kind of Quick-type mesohigh series compensation
And depth current-limiting apparatus, including controllable silicon SCR in power distribution cabinet, mend for exiting line voltage distribution during system normal operation
High-speed eddy switch K1, the line voltage distribution for compensation system voltage for repaying branch road and current limliting branch road compensate branch road, and are used for
The current limliting branch road of limiting short-circuit current after short trouble occurs for system, the controllable silicon SCR switchs K1 simultaneously with high-speed eddy
Join, the high-speed eddy switch K1 and line voltage distribution compensation branch circuit parallel connection, the line voltage distribution compensation branch road and current limliting branch road are simultaneously
Connection.
The line voltage distribution compensation branch route high-speed eddy switch K2 and compensation capacitor C is composed in series.
The current limliting branch route high-speed eddy switch K3 and current-limiting reactor L is composed in series.
The high-speed eddy switch K1 controls it to cut-off by the controller in power distribution cabinet, the high-speed eddy switch
K1 uses vacuum extinction breaker.
The high-speed eddy switch K2 controls it to cut-off by the controller in power distribution cabinet, the high-speed eddy switch
K2 uses vacuum extinction breaker.
The high-speed eddy switch K3 controls it to cut-off by the controller in power distribution cabinet, the high-speed eddy switch
K3 uses vacuum extinction breaker.
As shown from the above technical solution, the beneficial effects of the utility model are：The utility model has simple in construction, safety
Reliably, save transformer investment and the advantages that running wastage, can when system voltage is too low timely lifting system voltage；In branch road
Significantly limiting short-circuit current during generation short trouble, prevents the further expansion of short trouble scope, can realize again it is short-circuit therefore
Current-limiting reactor is exited rapidly after barrier excision plays a part of zero loss.
Brief description of the drawings
Fig. 1 is electrical schematic diagram of the present utility model.
Embodiment
As shown in figure 1, a kind of Quick-type mesohigh series compensation and depth current-limiting apparatus, including in power distribution cabinet
Controllable silicon SCR, the high-speed eddy switch K1 for exiting line voltage distribution compensation branch road and current limliting branch road during system normal operation, use
Branch road is compensated in the line voltage distribution of compensation system voltage, and for for limiting short-circuit current after system generation short trouble
Current limliting branch road, the controllable silicon SCR is in parallel with high-speed eddy switch K1, the high-speed eddy switch K1 and line voltage distribution compensation branch
Road is in parallel, the line voltage distribution compensation branch road and current limliting branch circuit parallel connection.
As shown in figure 1, the line voltage distribution compensation branch route high-speed eddy switch K2 and compensation capacitor C is composed in series.
The current limliting branch route high-speed eddy switch K3 and current-limiting reactor L is composed in series.High-speed eddy switch K1 by installed in
Controller in power distribution cabinet controls it to cut-off, and the high-speed eddy switch K1 uses vacuum extinction breaker.The high-speed eddy
Switch K2 controls it to cut-off by the controller in power distribution cabinet, and the high-speed eddy switch K2 is using vacuum extinction open circuit
Device.The high-speed eddy switch K3 controls it to cut-off by the controller in power distribution cabinet, and the high-speed eddy switch K3 is adopted
With vacuum extinction breaker.
Operation principle is as follows：When controller detects that line voltage distribution is too low, order high-speed eddy switch K1 quickly disconnects,
High-speed eddy switch K2 rapid closings make compensation capacitor C quickly put into, by compensation capacitor C that the voltage of this branch road is fast
Speed is lifted near rated voltage.High-speed eddy is switched into K1 rapid closings when controller detects that terminal voltage recovers, so
High-speed eddy switch K2 is disconnected afterwards, prevents overcompensation situation；When controller detects that the branch road occurs short-circuit at a high speed
Vortex switchs K3 rapid closings, after the rapid disconnections of high-speed eddy switch K1 put into rapidly current-limiting reactor L, fault branch is short
Road electric current substantially reduces.After short trouble is removed, fast acting control system control high-speed eddy switch K1 is closed immediately, then
High-speed eddy switch K3 is disconnected, and current-limiting reactor L is exited, and prevents current-limiting reactor L from putting into a large amount of reactive loss of consumption for a long time
With the actual motion problem of user terminal brownout.
In summary, the utility model has simple in construction, safe and reliable, saving transformer investment and running wastage etc. excellent
Point, can when system voltage is too low timely lifting system voltage；The significantly limiting short-circuit current when short trouble occurs for branch road, prevents
The only further expansion of short trouble scope, it can realize that short trouble exits rapidly current-limiting reactor after cutting off and plays zero damage again
The effect of consumption.
Claims (6)
1. a kind of Quick-type mesohigh series compensation and depth current-limiting apparatus, it is characterised in that：Including in power distribution cabinet
Controllable silicon SCR, the high-speed eddy switch K1 for exiting line voltage distribution compensation branch road and current limliting branch road during system normal operation, use
Branch road is compensated in the line voltage distribution of compensation system voltage, and for for limiting short-circuit current after system generation short trouble
Current limliting branch road, the controllable silicon SCR is in parallel with high-speed eddy switch K1, the high-speed eddy switch K1 and line voltage distribution compensation branch
Road is in parallel, the line voltage distribution compensation branch road and current limliting branch circuit parallel connection.
2. Quick-type mesohigh series compensation according to claim 1 and depth current-limiting apparatus, it is characterised in that：The line
Road voltage compensation branch route high-speed eddy switch K2 and compensation capacitor C is composed in series.
3. Quick-type mesohigh series compensation according to claim 1 and depth current-limiting apparatus, it is characterised in that：The limit
Stream branch route high-speed eddy switch K3 and current-limiting reactor L is composed in series.
4. Quick-type mesohigh series compensation according to claim 1 and depth current-limiting apparatus, it is characterised in that：The height
Speed vortex switch K1 controls it to cut-off by the controller in power distribution cabinet, and the high-speed eddy switch K1 uses vacuum extinction
Breaker.
5. Quick-type mesohigh series compensation according to claim 2 and depth current-limiting apparatus, it is characterised in that：The height
Speed vortex switch K2 controls it to cut-off by the controller in power distribution cabinet, and the high-speed eddy switch K2 uses vacuum extinction
Breaker.
6. Quick-type mesohigh series compensation according to claim 3 and depth current-limiting apparatus, it is characterised in that：The height
Speed vortex switch K3 controls it to cut-off by the controller in power distribution cabinet, and the high-speed eddy switch K3 uses vacuum extinction
Breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720901292.5U CN207021687U (en) | 2017-07-24 | 2017-07-24 | A kind of Quick-type mesohigh series compensation and depth current-limiting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720901292.5U CN207021687U (en) | 2017-07-24 | 2017-07-24 | A kind of Quick-type mesohigh series compensation and depth current-limiting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207021687U true CN207021687U (en) | 2018-02-16 |
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ID=61481807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720901292.5U Expired - Fee Related CN207021687U (en) | 2017-07-24 | 2017-07-24 | A kind of Quick-type mesohigh series compensation and depth current-limiting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207021687U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149573A (en) * | 2018-09-26 | 2019-01-04 | 云南电网有限责任公司电力科学研究院 | A kind of intelligent power distribution ring device adjusted based on TCR |
| CN112213553A (en) * | 2020-10-29 | 2021-01-12 | 国网河北省电力有限公司 | Device for measuring current |
| CN113176470A (en) * | 2021-03-19 | 2021-07-27 | 国网宁夏电力有限公司电力科学研究院 | Fast switching device for limiting short-circuit current direct-current component of power system and current limiting method |
-
2017
- 2017-07-24 CN CN201720901292.5U patent/CN207021687U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149573A (en) * | 2018-09-26 | 2019-01-04 | 云南电网有限责任公司电力科学研究院 | A kind of intelligent power distribution ring device adjusted based on TCR |
| CN112213553A (en) * | 2020-10-29 | 2021-01-12 | 国网河北省电力有限公司 | Device for measuring current |
| CN112213553B (en) * | 2020-10-29 | 2022-07-22 | 国网河北省电力有限公司 | Device for measuring current |
| CN113176470A (en) * | 2021-03-19 | 2021-07-27 | 国网宁夏电力有限公司电力科学研究院 | Fast switching device for limiting short-circuit current direct-current component of power system and current limiting method |
| CN113176470B (en) * | 2021-03-19 | 2023-03-14 | 国网宁夏电力有限公司电力科学研究院 | Fast switching device for limiting short-circuit current direct-current component of power system and current limiting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210928 Address after: 230088 No. 26 Acacia Road, hi tech Zone, Anhui, Hefei Patentee after: ANHUI HUIDIAN TECHNOLOGY Co.,Ltd. Address before: 230088 No. 26 Acacia Road, hi tech Zone, Anhui, Hefei Patentee before: ANHUI SHANGTU ELECTRIC POWER PROTECTIVE APPARATUS Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180216 |