CN107947354A - A kind of generator self-starting electric power system - Google Patents
A kind of generator self-starting electric power system Download PDFInfo
- Publication number
- CN107947354A CN107947354A CN201711347136.XA CN201711347136A CN107947354A CN 107947354 A CN107947354 A CN 107947354A CN 201711347136 A CN201711347136 A CN 201711347136A CN 107947354 A CN107947354 A CN 107947354A
- Authority
- CN
- China
- Prior art keywords
- voltage
- cabinet
- generating set
- low
- electric power
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The invention belongs to electric power system technical field, provide a kind of generator self-starting electric power system, it includes generating set, high-voltage board, power transformer and the low-voltage cabinet being sequentially connected with external electrical network, which further includes generator and start control module.The present invention is realized when municipal power failure, the function of automatic start generating set work, improves the reliability of electric power system.
Description
Technical field
The invention belongs to electric power system technical field, more particularly to a kind of generator self-starting electric power system.
Background technology
At present, in traditional electric power system, when municipal power failure, generally by artificially manually booting generator powered, in day
In normal Working Life, there is the important load that can not much have a power failure too long, but the mode manually started can not ensure powering
First time after the system failure starts generator powered, and reliability is low, once power supply trouble will be to the work of important load
Bring considerable influence, it is likely that cause irredeemable loss.
Therefore, in traditional electric power system exist can not in municipal power failure self-starting generator powered and reliability it is low
The problem of.
The content of the invention
It is an object of the invention to provide a kind of generator self-starting electric power system, it is intended to solves in traditional technical solution
It is existing can not in municipal power failure self-starting generator powered and the problem of low reliability.
A kind of generator self-starting electric power system, including generating set, the high-voltage board being sequentially connected with external electrical network, electric power
Transformer and low-voltage cabinet, the generating set are connected by the low-voltage cabinet and load, it is characterised in that the generator is certainly
Start electric power system and further include generator startup control module, the generator, which starts control module, includes first voltage relay
With second voltage relay, the voltage sampling coil of the first voltage relay connects with the voltage signal end of the high-voltage board
Connect, the voltage sampling coil of the second voltage relay is connected with the low-voltage bus bar of the low-voltage cabinet, the first voltage after
The generating set is connected to after the series connection of second normally opened contact of the first normally opened contact of electric appliance and the second voltage relay
Control flow, form generator self-starting circuit；
The voltage of the high-voltage board is in the first predetermined voltage range, and/or the voltage of the low-voltage cabinet is in second
When in predetermined voltage range, first normally opened contact and/or second normally opened contact are not attracted, the generator self-starting
Circuit disconnects, and the generating set does not work；
The voltage of the high-voltage board is not in first predetermined voltage range, and the voltage of the low-voltage cabinet is not at
When in second predetermined voltage range, first normally opened contact and second normally opened contact are attracted at the same time, the power generation
Unit self-starting circuit turns on, and the control flow controls the generating set to be powered the load.
Further, the high-voltage board includes PT cabinets, the first incoming line cabinet, metering cabinet and the first outlet sequentially connected
Cabinet, the PT cabinets are connected to the external electrical network, and first outgoing line cabinet is connected to the high-pressure side of the power transformer.
Further, the low-voltage cabinet include sequentially connect the second incoming line cabinet, reactive compensation cabinet, the second outgoing line cabinet and
Alternating current power generation switching cabinet, second incoming line cabinet are connected to the low-pressure side of the power transformer, and the alternating current power generation switches in cabinet
Dual-power transfer switch alternating current enter line side connect the low-voltage bus bar, the dual-power transfer switch power generation enter line side connection institute
Generating set is stated, the dual-power transfer switch outgoing line side connects emergency bus section；
When the generating set does not work, the dual-power transfer switch maintains the power supply of alternating current bus section, busbar section, to described negative
Carry power supply；
When the generating set starts work, the dual-power transfer switch switches to the generating set, so that described
Generating set gives the load supplying.
Further, the PT cabinets include voltage transformer, the primary side of the voltage transformer and the external electrical network
Connection, the secondary side of the voltage transformer are the voltage signal end, the voltage sampling line with the first voltage relay
Circle connection.
Further, between the voltage sampling coil of the secondary side of the voltage transformer and the first voltage relay
It is connected with the first breaker.
Further, it is connected with second between the voltage sampling coil of the low-voltage bus bar and the second voltage relay
Breaker.
Above-mentioned motor self-starting electric power system, by setting two voltage relays to control generating set, realizes and works as
The voltage of high-voltage board and low-voltage cabinet not in normal range of operation, i.e., municipal power failure when, automatic start generating set work
Function, improves the reliability of electric power system.
Brief description of the drawings
Fig. 1 is the electric power system structure diagram that present pre-ferred embodiments provide.
Fig. 2 is the voltage sampling coil connection diagram of present pre-ferred embodiments first voltage relay.
The voltage sampling coil connection diagram of Fig. 3 this present pre-ferred embodiments second voltage relays.
The connection of Fig. 4 this present pre-ferred embodiments first voltage relays and second voltage relay and motor unit is shown
It is intended to.
The operation principle schematic diagram of Fig. 5 this another embodiment of the present invention first voltage relays.
The operation principle schematic diagram of Fig. 6 this another embodiment of the present invention second voltage relays.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 1 shows the electric power system structure diagram that present pre-ferred embodiments provide, and for convenience of description, only shows
Part related to the present embodiment, details are as follows：
Generator self-starting electric power system provided in this embodiment includes generating set 100, sequentially connects with external electrical network 200
High-voltage board 300, power transformer 400 and the low-voltage cabinet 500 connect, further includes generator and starts control module 700, wherein, hair
Motor group 100 is connected by low-voltage cabinet 500 with load 600.
Wherein, high-voltage board 300 includes sequentially connecting PT cabinets 301, the first incoming line cabinet 302, metering cabinet 303 and first go out
Line cabinet 304, PT cabinets 301 are connected to external electrical network 200, and the first outgoing line cabinet 304 is connected to the high-pressure side of power transformer 400.Low-voltage cabinet
500 the second incoming line cabinets 501 for including sequentially connecting, reactive compensation cabinet 502, the second outgoing line cabinet 503 and alternating current power generation switch cabinet
504, the second incoming line cabinet 501 is connected to the low-pressure side of power transformer 400, and the dual power supply conversion that alternating current power generation switches in cabinet 504 is opened
Alternating current enter line side connection low-voltage bus bar, dual-power transfer switch power generation enter line side connection generating set 100 are closed, dual power supply conversion is opened
Close outgoing line side connection emergency bus section.
Generator, which starts control module 700, includes first voltage relay K1 and second voltage relay K2.First voltage
The voltage sampling coil of relay K1 is connected with the voltage signal end of high-voltage board 300, the voltage sampling of second voltage relay K2
Coil is connected with the low-voltage bus bar of low-voltage cabinet 500, the first normally opened contact and second voltage relay of first voltage relay K1
The control flow 101 of generating set 100 is connected to after the second normally opened contact series connection of K2, forms generator self-starting circuit.
Generator self-starting electric power system provided in this embodiment is further described in detail below：
Fig. 2 shows the voltage sampling coil connection diagram of present pre-ferred embodiments first voltage relay K1, this
In embodiment, PT cabinets 301 include voltage transformer TV, the primary side of the voltage transformer TV three-phase with external electrical network 200 respectively
Firewire connects, and the secondary side of voltage transformer TV passes through the first breaker ZK1 and first voltage relay as voltage signal end
The voltage sampling coil 1-3 connections of K1, the voltage sampling coil 4 of first voltage relay K1 and the neutral conductor of external electrical network 200
Connection.
Fig. 3 shows the voltage sampling coil connection diagram of present pre-ferred embodiments second voltage relay K2, the
The three-phase that the voltage sampling coil 1-3 of two voltage relay K2 passes through the low-voltage bus bar in the second breaker ZK2 and low-voltage cabinet 500
Firewire connects, and voltage sampling coil 4 is connected with the neutral conductor of low-voltage bus bar.
Fig. 4 shows present pre-ferred embodiments first voltage relay K1 and second voltage relay K2 and control flow
101 connection diagram, the switch contact 6 of first voltage relay K1 and the normally opened contact 5 of second voltage relay K2 connect,
The normally opened contact 5 of first voltage relay K1 and the switch contact 6 of second voltage relay K2 and with the control of generating set 100
The connection of screen 101, forms generator self-starting circuit.
When the voltage of high-voltage board 300 is in the first predetermined voltage range, and/or the voltage of low-voltage cabinet 500 is in second
When in predetermined voltage range, normally opened contact 5 and/or switch contact 6 are not attracted, and generator self-starting circuit disconnects, generating set
100 do not work；
When the voltage of high-voltage board 300 is not in the first predetermined voltage range, and the voltage of low-voltage cabinet 500 is not at second
When in predetermined voltage range, normally opened contact 5 and switch contact 6 are attracted at the same time, the conducting of 100 self-starting circuit of generating set, control
The control generating set 100 of screen 101 is powered load 600.
Wherein, the voltage model of high-voltage board 300 when the first predetermined voltage range and the second predetermined voltage range are normal power supply
The voltage range with low-voltage cabinet 500 is enclosed, concrete numerical value is varied from according to different electric power systems.
When generating set 100 does not work, i.e., the voltage of high-voltage board 300 and low-voltage cabinet 500 is respectively at the first default electricity
When pressing in scope and the second predetermined voltage range, dual-power transfer switch maintains alternating current bus section, busbar section side, gives the power supply of load 600；
When generator starts work, dual-power transfer switch switches to 100 side of generating set, so that generating set 100 is to load 600
Power supply.
Fig. 5 and Fig. 6 respectively illustrates another embodiment of the present invention first voltage relay K1 and second voltage relay K2
Operation principle schematic diagram, details are as follows：
As an embodiment of the present invention, when the voltage of high-voltage board 300 is not in the first predetermined voltage range, the first electricity
Potential relay K1 is attracted, then the normally opened contact 7 and 8 of first voltage relay K1 closes, and the first incoming line cabinet trip(ping) circuit of driving is moved
Make, so that the first incoming line cabinet trips；When the voltage of low-voltage cabinet 500 is not in the second predetermined voltage range, second voltage after
Electric appliance K2 is attracted, then the normally opened contact 7 and 8 of second voltage relay K2 closes, driving the second incoming line cabinet trip(ping) circuit action, with
The second incoming line cabinet is set to trip.
Generator self-starting electric power system provided by the invention is real by setting two voltage relays to control generating set
Showed the voltage when high-voltage board and low-voltage cabinet not in normal range of operation, i.e., municipal power failure when, automatic start generating set
The function of work, improves the reliability of electric power system.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of generator self-starting electric power system, including generating set, the high-voltage board being sequentially connected with external electrical network, electric power become
Depressor and low-voltage cabinet, the generating set are connected by the low-voltage cabinet and load, it is characterised in that the generator opens certainly
Dynamic electric power system further includes generator and starts control module, the generator start control module include first voltage relay and
Second voltage relay, the voltage sampling coil of the first voltage relay are connected with the voltage signal end of the high-voltage board,
The voltage sampling coil of the second voltage relay is connected with the low-voltage bus bar of the low-voltage cabinet, the first voltage relay
The first normally opened contact and the second voltage relay the series connection of the second normally opened contact after be connected to the control of the generating set
System screen, forms generator self-starting circuit；
The voltage of the high-voltage board is in the first predetermined voltage range, and/or the voltage of the low-voltage cabinet is default in second
When in voltage range, first normally opened contact and/or second normally opened contact are not attracted, the generator self-starting circuit
Disconnect, the generating set does not work；
The voltage of the high-voltage board is not in first predetermined voltage range, and the voltage of the low-voltage cabinet be not at it is described
When in the second predetermined voltage range, first normally opened contact and second normally opened contact are attracted at the same time, the generating set
Self-starting circuit turns on, and the control flow controls the generating set to be powered the load.
2. generator self-starting electric power system as claimed in claim 1, it is characterised in that the high-voltage board includes sequentially connecting
PT cabinets, the first incoming line cabinet, metering cabinet and the first outgoing line cabinet, the PT cabinets are connected to the external electrical network, first outlet
Cabinet is connected to the high-pressure side of the power transformer.
3. generator self-starting electric power system as claimed in claim 1, it is characterised in that the low-voltage cabinet includes sequentially connecting
The second incoming line cabinet, reactive compensation cabinet, the second outgoing line cabinet and alternating current power generation switching cabinet, second incoming line cabinet is connected to the electricity
The low-pressure side of power transformer, it is female that the dual-power transfer switch alternating current enter line side that the alternating current power generation switches in cabinet connects the low pressure
Line, the dual-power transfer switch power generation enter line side connect the generating set, the dual-power transfer switch outgoing line side connection
Emergency bus section；
When the generating set does not work, the dual-power transfer switch maintains the power supply of alternating current bus section, busbar section；
When the generating set starts work, the dual-power transfer switch switches to the generating set, so that the power generation
Unit gives the load supplying.
4. generator self-starting electric power system as claimed in claim 2, it is characterised in that the PT cabinets include mutual induction of voltage
Device, the primary side of the voltage transformer are connected with the external electrical network, and the secondary side of the voltage transformer is the voltage
Signal end, is connected with the voltage sampling coil of the first voltage relay.
5. generator self-starting electric power system as claimed in claim 4, it is characterised in that the secondary side of the voltage transformer
The first breaker is connected between the voltage sampling coil of the first voltage relay.
6. generator self-starting electric power system as claimed in claim 1, it is characterised in that the low-voltage bus bar and described second
The second breaker is connected between the voltage sampling coil of voltage relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711347136.XA CN107947354A (en) | 2017-12-15 | 2017-12-15 | A kind of generator self-starting electric power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711347136.XA CN107947354A (en) | 2017-12-15 | 2017-12-15 | A kind of generator self-starting electric power system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107947354A true CN107947354A (en) | 2018-04-20 |
Family
ID=61943464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711347136.XA Pending CN107947354A (en) | 2017-12-15 | 2017-12-15 | A kind of generator self-starting electric power system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107947354A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110661296A (en) * | 2019-10-15 | 2020-01-07 | 合肥阳光新能源科技有限公司 | Shutdown system, device and method of photovoltaic module and readable storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4189649A (en) * | 1978-12-01 | 1980-02-19 | Automatic Switch Company | Control panel for automatic transfer switch |
| US20050134121A1 (en) * | 2003-12-19 | 2005-06-23 | Lathrop Todd M. | Power distribution system and control system for same |
| CN201515255U (en) * | 2009-09-29 | 2010-06-23 | 中国移动通信集团湖南有限公司 | Power supply device |
| CN202084985U (en) * | 2011-05-13 | 2011-12-21 | 宝山钢铁股份有限公司 | Self-startup power supply apparatus |
-
2017
- 2017-12-15 CN CN201711347136.XA patent/CN107947354A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4189649A (en) * | 1978-12-01 | 1980-02-19 | Automatic Switch Company | Control panel for automatic transfer switch |
| US20050134121A1 (en) * | 2003-12-19 | 2005-06-23 | Lathrop Todd M. | Power distribution system and control system for same |
| CN201515255U (en) * | 2009-09-29 | 2010-06-23 | 中国移动通信集团湖南有限公司 | Power supply device |
| CN202084985U (en) * | 2011-05-13 | 2011-12-21 | 宝山钢铁股份有限公司 | Self-startup power supply apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110661296A (en) * | 2019-10-15 | 2020-01-07 | 合肥阳光新能源科技有限公司 | Shutdown system, device and method of photovoltaic module and readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104953696A (en) | On-line interactive uninterrupted power source | |
| CN103329383B (en) | local power supply device | |
| JP5755191B2 (en) | Inverter system | |
| CN206077065U (en) | Auto switching electric source system | |
| CN203660492U (en) | Microcomputer comprehensive protection device having active/passive automatic switching function | |
| CN105958437B (en) | Realize the control circuit of breaker decompression tripping in external circuit | |
| CN104079065A (en) | Method for making mobile power generation system be connected into power grid for operation in synchronous grid connection mode | |
| CN112072741B (en) | Method and device for realizing one-key starting of household energy storage system | |
| CN107947354A (en) | A kind of generator self-starting electric power system | |
| CN112564508B (en) | Power module online replacement control device and method for power electronic transformer system | |
| CN205070179U (en) | Electric blocking device of electric power low -voltage switchgear | |
| CN112436557A (en) | Medium-voltage photovoltaic grid-connected inverter system and photovoltaic power generation system | |
| CN203774211U (en) | Automatic closing control circuit of universal circuit breaker | |
| CN207638397U (en) | A kind of generator self-starting power supply system | |
| CN204597627U (en) | PLC controls duplicate supply and generator automatic switching device | |
| CN110896227B (en) | Photovoltaic power generation system and photovoltaic inverter | |
| CN108649606B (en) | On-grid and off-grid switching device | |
| CN103426682A (en) | Relay with safety device and relay safety device | |
| CN205509644U (en) | Diesel generating set is as reserve high voltage power supply's power supply system | |
| CN206977335U (en) | Soft starter device is controlled with capacity staggered form | |
| CN207652133U (en) | The dual power supply automatic switching device of electric spray type generating set and alternating current | |
| CN115280630A (en) | Conversion device, retrofit kit and method for supplying power to a load | |
| CN201805211U (en) | Starting protection device for test run of electrical equipment | |
| CN205647320U (en) | Dual supply excitation regulating circuit has been exempted from to encourage by low pressure water generator system | |
| CN217789314U (en) | Multi-mode generator set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |