CN201490726U - Safety grid-connection control loop of power generating set - Google Patents
Safety grid-connection control loop of power generating set Download PDFInfo
- Publication number
- CN201490726U CN201490726U CN2009202091940U CN200920209194U CN201490726U CN 201490726 U CN201490726 U CN 201490726U CN 2009202091940 U CN2009202091940 U CN 2009202091940U CN 200920209194 U CN200920209194 U CN 200920209194U CN 201490726 U CN201490726 U CN 201490726U
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- power
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- switch
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- power networks
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- Expired - Fee Related
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Abstract
The utility model provides a safety grid-connection control loop of a power generating set, which comprises a grid-connection selective switch. After being connected in series, a grid-connection selective conversion switch, a first auxiliary knife switch and a second knife electromagnetic lock 2 are connected with a serial connection line of a second auxiliary knife switch and a first knife electromagnetic lock 1 in parallel so as to form an interlocking loop, and form the grid-connection control loop with a high-voltage circuit breaker. The control loop further comprises a synchronizing switch connected in the loop in series. The safety grid-connection control loop realizes that the power generating set can carry out grid connection to generate power with both a No.1 segment of power grid and a No.2 segment of power grid, so as to well balance the power generating quantity and the power utilizing load; the grid-connection power generating mode of the power generating set is quite flexible; moreover, a low-voltage single power supply does not need to be adopted for supplying power in order to reduce spontaneous external power delivery, and the power supplying reliability is greatly improved.
Description
Technical field
The utility model belongs to the power generation technical field, particularly a kind of generating set safety control loop that is incorporated into the power networks.
Background technology
In reality, can have problems for some middle-size and small-size energy electricity power enterprises, for example, enterprise has many small generators groups, and former design # 1, #2 generator connecting in parallel with system are in the II section, and the #3 generator connecting in parallel with system is in the I section.When three units generated electricity simultaneously, I section and II section grid generation capacity unbalance often cause II section energy output superfluous and send outside, and I section energy output needed inadequately to the electrical network outsourcing.This contradiction is 3
#It is particularly outstanding to seem when generator maintenance or disorderly closedown, and I section electrical network does not have a generating set buyable electric weight that can generate electricity by way of merging two or more grid systems, and II section electrical network has two generating sets and can generate electricity by way of merging two or more grid systems, and causes energy output superfluous and send outside.There is very big price difference because of sending outside with the outsourcing electricity price, quite uneconomical for enterprise.Send outside for reducing self power generation, often adopt, cause the low pressure single power supply, reduced the reliability of power supply the high power section of power load migration generation load.
The utility model content
The purpose of this utility model provides a kind of generating set safety control loop that is incorporated into the power networks.
The technical solution of the utility model is, a kind of generating set safety control loop that is incorporated into the power networks, it is characterized in that, comprise the selector switch that is incorporated into the power networks, the described selective switchgear that is incorporated into the power networks, the first plug-in strip auxiliary switch and the second plug-in strip electromagnetic lock, two serial connection backs are with the second plug-in strip auxiliary switch and one tandem link of the first plug-in strip electromagnetic lock and connect the composition interlocking loop, compose in series the control loop that is incorporated into the power networks with primary cut-out.Above-mentioned control loop comprises that also synchronizing switch is serially connected in the loop.
The beneficial effects of the utility model are, a generating set not only can be incorporated into the power networks and one section but also can be incorporated into the power networks and two sections grid generations, better balance energy output and power load, the generating set pattern of generating electricity by way of merging two or more grid systems is greatly flexible, also do not need in addition to send outside for the minimizing self power generation to adopt the low pressure single power supply, the reliability of power supply increases greatly again.
Description of drawings
Fig. 1 is the control loop control circuit figure that is incorporated into the power networks among the utility model one embodiment
Fig. 2 is the network segment line graph of grid-connected control method among the utility model one embodiment
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.
The generating set safety of the present utility model control loop that is incorporated into the power networks, comprise the selector switch that is incorporated into the power networks, the described selective switchgear that is incorporated into the power networks, the first plug-in strip auxiliary switch and the second plug-in strip electromagnetic lock, two serial connection backs are with the second plug-in strip auxiliary switch and one tandem link of the first plug-in strip electromagnetic lock and connect the composition interlocking loop, compose in series the control loop that is incorporated into the power networks with primary cut-out.Above-mentioned control loop comprises that also synchronizing switch is serially connected in the loop.
There is table as follows again among Fig. 1
And shown in Figure 2, when generator intended being incorporated into the power networks the generating of I section, the selector switch BK that at first will be incorporated into the power networks was threaded to " the I section is incorporated into the power networks " position, 1,2 of BK; 3,4 and 7,8 closings of contact, this moment, 202 lines were assisted 7,8 closing contacts of normally-closed contact, the II section that is incorporated into the power networks plug-in strip auxiliary switch contact 2G-5 closure and BK by generator connecting in parallel with system high-voltage switch gear DL-2, make the electromagnetic lock 1DS of the I section plug-in strip 1G that is incorporated into the power networks get electric (communication of 201 to 202 loops), open the electromagnetic lock I section plug-in strip 1G that is incorporated into the power networks that closes, the 1G auxiliary switch closing of contact, at this time No. 101 lines are by 3,4 closing contacts and the 1G auxiliary switch contact 1G-4 closure of BK, and the 6KV I section that is incorporated into the power networks indicator light HD21 lights.Drop into synchronizing switch TK then, the TK closing of contact, at this time I section line voltage line A630 (I) is by plug-in strip auxiliary switch 1G closure on the one hand, and be incorporated into the power networks selector switch BK closing contact 6,5 and synchronizing switch TK closing contact 17,19 are with I section line voltage YMa (I) the input table same period; Generator output voltage line A611, C611 press through generator respectively and become auxiliary switch closing contact and synchronizing switch TK closing contact 13,15 and 9,11 of dropping into plug-in strip G on the other hand, with generator output voltage line A610, the C610 input table same period.When same period table show the phase place, voltage of generator output and the electrical network that is incorporated into the power networks, when frequency is basic identical, rotating generator is incorporated into the power networks control switch KK in " combined floodgate " position, contact 2G-1 is normally closed for contact 1G-1 closure, the be incorporated into the power networks II section plug-in strip auxiliary switch of control power supply+KM by 1RD, the selector switch BK closing contact 1,2 that is incorporated into the power networks, the I section that is incorporated into the power networks plug-in strip auxiliary switch, synchronizing switch TK closing contact 1,3; No. 107 lines are by control switch KK closing contact 5,8 and synchronizing switch TK closing contact 5,7, make the closing contactor HC energising adhesive of generator connecting in parallel with system high-voltage switch gear DL, the closing coil energising of high-voltage switch gear DL, high-voltage switch gear DL automatic closing is incorporated into the power networks, generator is to I section grid generation, and the DL normally-closed contact is opened and cut off the DL closing circuit.
When generator intended being incorporated into the power networks the generating of II section, with above-mentioned similar, at first net selector switch BK was threaded to " the II section is incorporated into the power networks ", BK15,16; 13,14 and 19,20 closings of contact, can select the electromagnetic lock 2DS (communication of 201 to 202 loops) of plug-in strip 2G this moment with opening the II section that is incorporated into the power networks, the II section that is incorporated into the power networks of just can closing is selected plug-in strip 2G, 2G auxiliary switch contact 2G-4 closure, and HD22 is bright for the 6KVII section that at this time is incorporated into the power networks indicator light.Drop into synchronizing switch TK then, the TK closing of contact, at this time II section line voltage line A630 (II) is by plug-in strip 2G auxiliary contact on the one hand, and be incorporated into the power networks selector switch BK closing contact 12,11 and synchronizing switch TK closing contact 17,19 are with II section line voltage YMa (II) the input table same period; Generator output voltage line A611, C611 press through generator respectively and become auxiliary switch closing contact and synchronizing switch 2TK closing contact 13,15 and 9,11 of dropping into plug-in strip G on the other hand, with generator output voltage line A610, the C610 input table same period.When same period table show the phase place, voltage of generator output and the electrical network that is incorporated into the power networks, when frequency is basic identical, rotating generator is incorporated into the power networks control switch 2KK in " combined floodgate " position, control power supply+KM is by closing contact, the II section that the is incorporated into the power networks plug-in strip 2G-3 auxiliary switch normally-closed contact of 1RD, the selector switch BK closing contact 9,10 that is incorporated into the power networks, the I section that is incorporated into the power networks plug-in strip 1G-3 auxiliary switch, synchronizing switch TK closing contact 1,3; Remaining closing circuit is with being incorporated into the power networks the I section.
For ease of the maintenance debugging, combined floodgate control circuit when increasing test.The disconnection II section that is incorporated into the power networks selects plug-in strip 2G, the I section that is incorporated into the power networks to select plug-in strip 1G, BK is threaded to " test ", drop into synchronizing switch TK, rotating generator is incorporated into the power networks control switch KK in " combined floodgate " position, control power supply+KM is by normally-closed contact, the II section that the is incorporated into the power networks plug-in strip 2G-2 auxiliary switch normally-closed contact of 1RD, the selector switch BK closing contact 19,20 that is incorporated into the power networks, the I section that is incorporated into the power networks plug-in strip 1G-2 auxiliary switch, and remaining closing circuit is with being incorporated into the power networks the I section.
Because of generator has increased the I section that is incorporated into the power networks, jump protection so in protection, increase the connection of I section interconnection switch.21,22 closings of contact of generator connecting in parallel with system control switch KK after being incorporated into the power networks, when I section interconnection switch DL tripping operation, 21,22 closing contacts, signal relay XJ coil, I section interconnection switch DL normally-closed contact, the pressing plate LP (I) of No. 101 line process KK, it is electric that auxiliary relay BCJ coil is got, be incorporated into the power networks high-voltage switch gear DL tripping operation of starter-generator.
Claims (2)
1. generating set safety control loop that is incorporated into the power networks, it is characterized in that, comprise the selector switch that is incorporated into the power networks, the described selective switchgear that is incorporated into the power networks, the first plug-in strip auxiliary switch and the second plug-in strip electromagnetic lock, two serial connection backs are with the second plug-in strip auxiliary switch and one tandem link of the first plug-in strip electromagnetic lock and connect the composition interlocking loop, compose in series the control loop that is incorporated into the power networks with primary cut-out.
2. the generating set safety control loop that is incorporated into the power networks according to claim 1 is characterized in that, comprises that also synchronizing switch is serially connected in the loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202091940U CN201490726U (en) | 2009-09-04 | 2009-09-04 | Safety grid-connection control loop of power generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202091940U CN201490726U (en) | 2009-09-04 | 2009-09-04 | Safety grid-connection control loop of power generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201490726U true CN201490726U (en) | 2010-05-26 |
Family
ID=42429593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202091940U Expired - Fee Related CN201490726U (en) | 2009-09-04 | 2009-09-04 | Safety grid-connection control loop of power generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201490726U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751735A (en) * | 2011-04-19 | 2012-10-24 | 巨争号 | Generating set output reducing and generating set tripping device used in case of overload of contact outgoing lines of power plant |
| CN111654063A (en) * | 2020-05-28 | 2020-09-11 | 深圳供电局有限公司 | Automatic self-synchronizing system of small hydropower station hydraulic generator |
-
2009
- 2009-09-04 CN CN2009202091940U patent/CN201490726U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751735A (en) * | 2011-04-19 | 2012-10-24 | 巨争号 | Generating set output reducing and generating set tripping device used in case of overload of contact outgoing lines of power plant |
| CN102751735B (en) * | 2011-04-19 | 2014-08-13 | 巨争号 | Generating set output reducing and generating set tripping device used in case of overload of contact outgoing lines of power plant |
| CN111654063A (en) * | 2020-05-28 | 2020-09-11 | 深圳供电局有限公司 | Automatic self-synchronizing system of small hydropower station hydraulic generator |
| CN111654063B (en) * | 2020-05-28 | 2022-07-12 | 深圳供电局有限公司 | Automatic self-synchronizing system of small hydropower station hydraulic generator |
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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: 20100526 Termination date: 20140904 |
|
| EXPY | Termination of patent right or utility model |