CN209217443U - 10KV electrical voltage system monitoring circuit - Google Patents
10KV electrical voltage system monitoring circuit Download PDFInfo
- Publication number
- CN209217443U CN209217443U CN201821850071.0U CN201821850071U CN209217443U CN 209217443 U CN209217443 U CN 209217443U CN 201821850071 U CN201821850071 U CN 201821850071U CN 209217443 U CN209217443 U CN 209217443U
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- Prior art keywords
- system monitoring
- automatic
- electrical voltage
- automatic switch
- switch
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Abstract
The utility model relates to a kind of 10KV electrical voltage system monitoring circuits, automatic air-break switch and fuse are provided with particular by between each cabinet top small voltage bus and the terminal block B of secondary terminals seed cell, route is optimized, after certain circuit is broken down in cabinet, automatic air-break switch can quick acting disconnect, fault loop is cut off at the first time, other circuits will not be impacted；And when certain circuit needs to overhaul, selective power failure can be artificially carried out, it is not necessary to all have a power failure to whole small bus, reduce power failure coverage, improve system run all right.
Description
Technical field
The utility model belongs to voltage monitoring circuit technology field, and in particular to 10KV electrical voltage system monitoring circuit.
Background technique
At present in electric system Microcomputer Protection and voltage monitoring circuit, the certain defect as present in design early period,
The secondary voltage signal of every switchgear is all introduced from 10KV cabinet top small voltage bus, is connect by secondary control cable at this cabinet end
In seed cell on secondary terminals row, after by control cable supply kilowatt-hour meter, measuring instrumentss, the secondary devices electricity such as protective relaying device
Press signal.From cabinet top small voltage bus between switchgear terminal block without any isolation, protection element.This makes in secondary device
Secondary voltage can not be isolated when upper work, it is necessary to which livewire work causes very big security risk to maintenance, maintenance work.More
If voltage secondary circuit failure will cause this section of all switchgear secondary device in a certain high-tension switch cabinet of serious person
Loss of voltage, switch under-voltage protection malfunction tripping, causes significant blackouts accident.
Summary of the invention
In view of the deficiencies of the prior art, the utility model provides a kind of 10KV electrical voltage system monitoring circuit, can independently control
Cabinet inner looping processed improves system run all right, and can solve the risk of personnel's hot line job in abnormal cases, avoids making
Expand at personal injury and accident range.
The technical scheme adopted by the utility model is
A kind of 10KV electrical voltage system monitoring circuit, including cabinet top small voltage bus and secondary terminals seed cell terminal block, each
Automatic air-break switch, the end of the secondary terminals seed cell are provided between cabinet top small voltage bus and the terminal block B of secondary terminals seed cell
It is in parallel with secondary protective element A that the input terminal of son row B also passes through control cable.
It further limits, the automatic air-break switch includes the first automatic switch DL1, the second automatic switch DL2 and third
It is automatically switched DL3, the end V, U, W of each cabinet top small voltage bus passes through the first automatic switch DL1, the second automatic switch respectively
DL2 and third automatic switch DL3 are connect with the input terminal of the terminal block B of secondary terminals seed cell.
It further limits, the end V, U, W of the cabinet top small voltage bus passes through control cable and the first automatic switch respectively
DL1, the second automatic switch DL2, third automatic switch DL3 are correspondingly connected with.
It further limits, the output end of the automatic air-break switch is connected with fuse, passes through fuse and secondary terminals
The terminal block B of room is connected with secondary protective element A.
It further limits, the secondary protective element A is kilowatt-hour meter or measuring instrumentss or protective relaying device.
A kind of 10KV electrical voltage system monitoring circuit of the utility model, by passing through automatic air in cabinet top small voltage bus
The terminal block B and secondary protective element A of switch, fuse and secondary terminals seed cell are correspondingly connected with, and are optimized to route, when in cabinet
After certain circuit is broken down, automatic air-break switch quick acting is disconnected, and at the first time cuts off fault loop, will not be to other times
Road impacts；When exception occurs in some automatic air-break switch (DL), excision failure cannot effectively be disconnected by breaking down in route
When point, fastp-acting fuse RD can fuse in time, cooperate with the automatic air-break switch DL of quick acting, play to branch route
Double protection can preferably protect the safe operation of equipment and system；It, can people and when certain circuit needs to overhaul
To carry out selective power failure, it is not necessary to all have a power failure to whole small bus, reduce power failure coverage, improve system run all right
Property, and the risk of personnel's hot line job in abnormal cases can be solved, it avoids personal injury and accident range expands.
Detailed description of the invention
Fig. 1 is 10KV electrical voltage system monitoring circuit connection schematic diagram.
Specific embodiment
The technical solution of the utility model is further described now in conjunction with drawings and examples, but the utility model
It is not limited to following implementation situations.
Referring to Fig. 1, the utility model is to install small-sized automatic air-break switch additional in all high-tension switch cabinet secondary terminals room
DL and fuse, automatic air-break switch include that the first automatic switch DL1, the second automatic switch DL2 and third are automatically switched DL3,
Using DZ5-20 type or it can be suitable for other models of high-tension switch cabinet, fuse include first fuse RD1, the
Two fuse RD2, third fuse RD3.The end U, V, W of cabinet top small voltage bus passes through secondary control cable respectively and connects first
It is automatically switched the upper end of DL1, the second automatic switch DL2 and third automatic switch DL3, the first automatic switch DL1, second open automatically
Close DL2 and third automatic switch DL3 lower end respectively with first fuse RD1, second fuse RD2, RD3 pairs of third fuse
Should connect, first fuse RD1, second fuse RD2, third fuse RD3 output end by control cable respectively with two
Input terminal U, V, W terminal of the terminal block B of secondary terminal room connects, and the input terminal of the terminal block B of secondary terminals seed cell also passes through control
Cable is corresponding with U, V, W terminal of secondary protective element A such as kilowatt-hour meter, measuring instrumentss, protective relaying device etc. and is connected in parallel,
Voltage signal is provided to kilowatt-hour meter, measuring instrumentss, protective relaying device etc..It is corresponding in this way after certain circuit is broken down in cabinet
It is closed the first automatic switch DL1, the second automatic switch DL2 or third automatic switch DL3 quick acting disconnects, at the first time by event
The excision of barrier circuit, will not impact other circuits, when exception occurs in some automatic air-break switch (DL), in route appearance event
When barrier cannot effectively disconnect excision fault point, fuse RD can fuse in time, mutual with the automatic air-break switch DL of quick acting
Cooperation, plays double protection to branch route, can preferably protect the safe operation of equipment and system；And it ought be wherein
When any one circuit needs to overhaul, selective power failure can be artificially carried out, it is not necessary to all have a power failure to whole small bus, diminution stops
Electric coverage.
Claims (5)
1. a kind of 10KV electrical voltage system monitoring circuit, including cabinet top small voltage bus and secondary terminals seed cell terminal block, feature exist
In being provided with automatic air-break switch, the secondary terminals between each cabinet top small voltage bus and the terminal block B of secondary terminals seed cell
It is in parallel with secondary protective element A that the input terminal of the terminal block B of seed cell also passes through control cable.
2. 10KV electrical voltage system monitoring circuit according to claim 1, which is characterized in that the automatic air-break switch includes
First automatic switch DL1, the second automatic switch DL2 and third are automatically switched DL3, the end U, V, W of each cabinet top small voltage bus
The terminal block B of DL3 and secondary terminals seed cell are automatically switched by the first automatic switch DL1, the second automatic switch DL2 and third respectively
Input terminal connection.
3. 10KV electrical voltage system monitoring circuit according to claim 2, which is characterized in that the cabinet top small voltage bus
V, it is corresponding with the first automatic switch DL1, the second automatic switch DL2, third automatic switch DL3 to pass through control cable respectively for the end U, W
Connection.
4. described in any item 10KV electrical voltage system monitoring circuits according to claim 1~3, which is characterized in that the automatic sky
The output end of air cock is connected with fuse, is connected by fuse and the terminal block B and secondary protective element A of secondary terminals seed cell
It connects.
5. 10KV electrical voltage system monitoring circuit according to claim 4, which is characterized in that the secondary protective element A is
Kilowatt-hour meter or measuring instrumentss or protective relaying device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821850071.0U CN209217443U (en) | 2018-11-09 | 2018-11-09 | 10KV electrical voltage system monitoring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821850071.0U CN209217443U (en) | 2018-11-09 | 2018-11-09 | 10KV electrical voltage system monitoring circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209217443U true CN209217443U (en) | 2019-08-06 |
Family
ID=67459029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821850071.0U Active CN209217443U (en) | 2018-11-09 | 2018-11-09 | 10KV electrical voltage system monitoring circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209217443U (en) |
-
2018
- 2018-11-09 CN CN201821850071.0U patent/CN209217443U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210910 Address after: 715400 min Cun Industrial Park, Hancheng City, Weinan City, Shaanxi Province Patentee after: Hancheng black cat Chemical Co.,Ltd. Address before: 715400 Hancheng Coal Chemical Industrial Park, Weinan City, Shaanxi Province Patentee before: SHAANXI HEIMAO COKING Co.,Ltd. |