CN210744823U - Automatic switching double-power-supply network - Google Patents
Automatic switching double-power-supply network Download PDFInfo
- Publication number
- CN210744823U CN210744823U CN201921845048.7U CN201921845048U CN210744823U CN 210744823 U CN210744823 U CN 210744823U CN 201921845048 U CN201921845048 U CN 201921845048U CN 210744823 U CN210744823 U CN 210744823U
- Authority
- CN
- China
- Prior art keywords
- voltage
- circuit
- switching circuit
- self
- circuit breaker
- 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.)
- Active
Links
Images
Abstract
The utility model discloses a self-switching double power supply network, including high-pressure self-switching circuit, low pressure self-switching circuit, commercial power self-switching circuit and step-down circuit, high-pressure self-switching circuit input end connects high-pressure diesel generating set, low pressure self-switching circuit input end connects low pressure diesel generating set, commercial power self-switching circuit input end connects high-pressure commercial power, high-pressure self-switching circuit output end, low pressure self-switching circuit output end and commercial power self-switching circuit output end connect step-down circuit input end respectively, step-down circuit output low voltage power supply, all be connected with automatic switching device between arbitrary two in high-pressure self-switching circuit, low pressure self-switching circuit and commercial power self-switching circuit; the utility model discloses can be through interconnection and automatic switching between high-pressure diesel generating set, low pressure diesel generating set and the commercial power, constitute a reliable power supply network, realize the uninterrupted power supply to the load, satisfy the user demand in the higher place of load level requirement.
Description
Technical Field
The utility model relates to a power supply system technical field especially relates to a throw automatically and cut two supply network.
Background
In an electric power system, for occasions requiring continuous power supply, a diesel generator set is adopted to prepare for double power supply of a circuit, so that serious influence on economy and life caused by power failure is avoided. At present, the existing dual power supply preparation mainly includes the following power supply modes:
(1) the high-voltage two mains supply incoming line power supplies are mutually standby power supplies;
(2) the low-voltage two mains supply incoming line power supplies are mutually standby power supplies;
(3) the high-voltage commercial power incoming line power supply and the high-voltage diesel generator set power supply are mutually standby power supply;
(4) the low-voltage commercial power incoming line power supply and the low-voltage diesel generator set power supply are mutually standby power supply;
however, the current power supply network has a single mode and can only perform an alternative power supply mode, for example, a high-voltage mains supply incoming line power supply and a high-voltage diesel generator set power supply are mutually backed up, the high-voltage mains supply supplies high voltage during normal operation, and when the high-voltage mains supply incoming line power supply fails, a power supply source of a circuit is automatically switched to the high-voltage diesel generator set power supply to supply power to a system behind the power supply. Therefore, if the two power supply modes have power supply faults simultaneously, the whole power grid is affected, and the reliability and the stability of power supply cannot be realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a from throwing and cutting two supply network can form a reliable supply network through interconnection and automatic switching between high-pressure diesel generating set, low pressure diesel generating set and the commercial power, realizes the uninterrupted power supply to load, satisfies the user demand in the higher place of load grade requirement.
The utility model adopts the technical proposal that:
a self-switching double-power-supply network comprises a high-voltage self-switching circuit, a low-voltage self-switching circuit, a mains supply self-switching circuit and a voltage reduction circuit; the input end of a high-voltage automatic switching circuit is connected with the power supply end of a high-voltage diesel generator set, the input end of a low-voltage automatic switching circuit is connected with the power supply end of a low-voltage diesel generator set, the input end of a commercial power automatic switching circuit is connected with the power supply end of high-voltage commercial power, the output end of the high-voltage automatic switching circuit, the output end of the low-voltage automatic switching circuit and the output end of the commercial power automatic switching circuit are respectively connected with the input end of a voltage reduction circuit, and; and automatic switching devices are connected between any two of the high-voltage self-switching circuit, the low-voltage self-switching circuit and the commercial power self-switching circuit.
Further, the high-voltage automatic switching circuit comprises a first circuit breaker, and the first circuit breaker is connected with the voltage reduction circuit through a tenth circuit breaker; the mains supply automatic switching circuit comprises a first mains supply branch and a second mains supply branch, the first branch comprises a seventh circuit breaker, the seventh circuit breaker is connected with the voltage reduction circuit through a tenth circuit breaker, the second branch comprises a twelfth circuit breaker, and the twelfth circuit breaker is connected with the voltage reduction circuit through a fourteenth circuit breaker; the low-voltage automatic switching circuit comprises a boosting transformer and a thirteenth circuit breaker, wherein the boosting transformer and the thirteenth circuit breaker are sequentially connected in series and then connected with a voltage reduction circuit through a fourteenth circuit breaker; and high-voltage backup automatic switching devices are arranged between the first circuit breaker and the seventh circuit breaker, between the twelfth circuit breaker and the thirteenth circuit breaker and between the tenth circuit breaker and the fourteenth circuit breaker.
Further, the step-down circuit comprises a fifteenth circuit breaker, a second step-down transformer and a sixteenth circuit breaker which are connected in series in sequence.
The system further comprises a mains supply auxiliary self-switching circuit and a low-voltage auxiliary self-switching circuit, wherein the input end of the mains supply auxiliary self-switching circuit is connected with a high-voltage mains supply end, the input end of the low-voltage auxiliary self-switching circuit is connected with the power supply end of a low-voltage diesel generator set, and the output end of the mains supply auxiliary self-switching circuit and the output end of the low-voltage auxiliary self-switching circuit respectively output a low-voltage power supply through an eleventh circuit breaker; an automatic switching device is arranged between the commercial power auxiliary self-switching circuit and the low-voltage auxiliary self-switching circuit.
Furthermore, the commercial power auxiliary automatic switching circuit comprises a first step-down transformer and an eighth circuit breaker, wherein the first step-down transformer and the eighth circuit breaker are sequentially connected in series and then connected with an eleventh circuit breaker; the low-voltage auxiliary automatic switching circuit comprises a ninth circuit breaker, and the ninth circuit breaker is connected with an eleventh circuit breaker; and a low-voltage spare power automatic switching device is arranged between the eighth circuit breaker and the ninth circuit breaker.
The utility model discloses following beneficial effect has:
(1) through the mutual communication among the high-voltage commercial power supply, the high-voltage diesel generator set power supply and the low-voltage diesel generator set power supply, the switching of the power supply is automatically realized, the uninterrupted power supply for load power supply is realized, a reliable power supply network is formed, and the use requirements of places with higher load grade requirements are met;
(2) through setting up the commercial power is supplementary from switching circuit and the supplementary automatic switching circuit of low pressure, be the utility model discloses have low pressure power supply dual-port, and the commercial power is supplementary from switching circuit and the supplementary automatic switching circuit simple structure of low pressure, be applicable to closely use, the cooperation high pressure is from switching circuit, low pressure from switching circuit and commercial power from switching circuit's use, satisfies power supply service to different distances, position user, and the flexibility is strong, and application scope is wide, and the practicality is strong.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Detailed Description
As shown in fig. 1, the utility model discloses a pressure is from switching circuit, low pressure from switching circuit, commercial power from switching circuit, step-down circuit, commercial power are supplementary from switching circuit and the supplementary self-switching circuit of low pressure.
The input end of the high-voltage automatic switching circuit is connected with the power supply end of the high-voltage diesel generator set, the input end of the low-voltage automatic switching circuit is connected with the power supply end of the low-voltage diesel generator set, the input end of the commercial power automatic switching circuit is connected with the power supply end of the high-voltage commercial power, the output end of the high-voltage automatic switching circuit, the output end of the low-voltage automatic switching circuit and the output end of the commercial power automatic switching circuit are respectively connected with the input end of the voltage reduction circuit.
The input end of the commercial power auxiliary automatic switching circuit is connected with a high-voltage commercial power supply end, the input end of the low-voltage auxiliary automatic switching circuit is connected with a power supply end of the low-voltage diesel generator set, and the output end of the commercial power auxiliary automatic switching circuit and the output end of the low-voltage auxiliary automatic switching circuit output a low-voltage power supply through an eleventh circuit breaker respectively.
Automatic switching devices are connected between any two of the high-voltage self-switching circuit, the low-voltage self-switching circuit and the mains supply self-switching circuit, and automatic switching devices are arranged between the mains supply auxiliary self-switching circuit and the low-voltage auxiliary self-switching circuit.
In order to better understand the present invention, the technical solution of the present invention is further explained below with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses a high pressure is from switching circuit, low pressure from switching circuit, commercial power from switching circuit, step-down circuit, commercial power are supplementary from switching circuit and the supplementary self-switching circuit of low pressure.
The high-voltage automatic switching circuit comprises a first circuit breaker DL1, one end of the first circuit breaker DL1 is connected with the power supply end of the high-voltage diesel generator set, and the other end of the first circuit breaker DL1 is connected with a voltage reduction circuit through a tenth circuit breaker DL10 in series.
The low-voltage automatic switching circuit comprises a step-up transformer T and a thirteenth breaker DL13, one end of the step-up transformer T is connected with the power supply end of the low-voltage diesel generator set through a sixth breaker DL6 and a third breaker DL3 which are sequentially connected in series, and the other end of the step-up transformer T is connected with a step-down circuit through a fourteenth breaker DL14 which is connected in series after being connected with a thirteenth breaker DL13 in series.
The mains supply automatic switching circuit comprises a first mains supply branch and a second mains supply branch; the first branch circuit comprises a seventh breaker DL7, one end of the seventh breaker DL7 is connected with a high-voltage commercial power supply end after being sequentially connected with a fourth breaker DL4 and a second breaker DL2 in series, and the other end of the seventh breaker DL7 is connected with a voltage reduction circuit through a tenth breaker DL 10; the second branch circuit comprises a twelfth breaker DL12, one end of the twelfth breaker DL12 is connected with a high-voltage commercial power supply end after being sequentially connected with a fourth breaker DL4 and a second breaker DL2 in series, and the other end of the twelfth breaker DL12 is connected with a voltage reduction circuit through a fourteenth breaker.
The step-down circuit comprises a fifteenth breaker DL15, a second step-down transformer T2 and a sixteenth breaker DL16 which are sequentially connected in series, and the output end of the step-down circuit is a first power output end for outputting a 400V low-voltage power supply. The first power output end can meet the power supply use requirements of long distance and short distance.
The commercial power auxiliary automatic switching circuit comprises a first step-down transformer T1 and an eighth breaker DL8, one end of the first step-down transformer T1 is connected with a high-voltage commercial power supply end after being sequentially connected with a fifth breaker DL5 and a second breaker DL2 in series, and the other end of the first step-down transformer T1 is sequentially connected with an eighth breaker DL8 and an eleventh breaker DL11 in series and then outputs a 400V low-voltage power supply to form a second power output end. The second power output end can meet the power supply use requirement of short distance.
The low-voltage auxiliary automatic switching circuit comprises a ninth breaker DL9, one end of the ninth breaker DL9 is connected with the third breaker DL3 in series and then connected with the power supply end of the diesel generating set, and the other end of the low-voltage ninth breaker DL9 is connected with the eleventh breaker DL11 in series and then connected with the second power supply output end.
A10.5V spare power automatic switch is arranged between the first breaker DL1 and the seventh breaker DL7, a 10.5V spare power automatic switch is arranged between the tenth breaker DL10 and the fourteenth breaker DL14, a 10.5V spare power automatic switch is arranged between the twelfth breaker DL12 and the thirteenth breaker DL13, a 10.5V spare power automatic switch is arranged, and a low-voltage spare power automatic switch device ATS is arranged between the eighth breaker DL8 and the ninth breaker DL 9.
When the 10.5V spare power automatic switching device and the low-voltage spare power automatic switching device ATS are connected with two paths of power supplies, the connection mode is that an auxiliary contact connected with one end of the power supply in two paths of circuit breakers is connected into the corresponding spare power automatic switching device, the spare power automatic switching device detects that one path of circuit breaker is electrified, namely, the power is supplied to a coil of the circuit breaker, the corresponding circuit breaker is controlled to be closed, alternative electrification of two paths of circuits is realized, and uninterrupted power supply of a power supply system is guaranteed.
The following further explains the embodiments of the present invention based on different power failure faults.
(a) When commercial power does not have electricity, high-pressure diesel generating set does not have electricity, low pressure diesel generating set has electricity, first power output and second power output realize supplying power to low pressure distribution system:
a third breaker DL3 is switched on, a sixth breaker DL6 is switched on, a thirteenth breaker DL13 is switched on, a fourteenth breaker DL14 is switched on, a fifteenth breaker DL15 is switched on, and a sixteenth breaker DL16 is switched on, so that the AC400V output of the first power output end is realized;
and the other path of the circuit breaker is switched on by a thirteenth circuit breaker DL3, a ninth circuit breaker DL9 and an eleventh circuit breaker DL11, so that the AC400 output of the second power output end is realized.
(b) When commercial power does not have electricity, low pressure diesel generating set does not have electricity, high pressure diesel generating set has electricity, first power output end realizes supplying power to low pressure distribution system:
the first breaker DL1 is switched on, the tenth breaker DL10 is switched on, the fifteenth breaker DL15 is switched on, and the sixteenth breaker DL16 is switched on, so that the AC400V output of the first power output end is realized.
(c) When high-pressure diesel generating set does not have electricity, low pressure diesel generating set does not have electricity, commercial power is electrified, first power output and second power output realize supplying power to low pressure distribution system:
switching on a second breaker DL2, a fourth breaker DL4, a twelfth breaker DL12, a fourteenth breaker DL14, a fifteenth breaker DL15 and a sixteenth breaker DL16 to realize the AC400V output of the first power output end;
and the other path of the circuit breaker is switched on by a fifth circuit breaker DL5, a eighth circuit breaker DL8 and an eleventh circuit breaker DL11, so that the AC400 output of the second power output end is realized.
The utility model discloses a two power supply network structures make and set up to each other for back-up between commercial power, high-pressure unit, the low-voltage unit, no matter be that the commercial power breaks down, still other high-pressure unit or low-voltage unit break down, the suitable high low voltage power supply of external output all can be accomplished to the homoenergetic, final output link promptly, and then constitute a reliable power supply network, when arbitrary one has power output in commercial power, high-pressure diesel generating set, low-voltage diesel generating set, can realize the uninterrupted power supply to the load power supply. It should be noted that the utility model discloses what export is low pressure load power, nevertheless can be according to the user demand of load, become low-voltage, low-voltage adjustment for suitable low-voltage, high-voltage adjustment for suitable high-voltage, low-voltage adjustment for suitable high-voltage etc. with the high voltage, wherein, voltage conversion process is prior art, and the event is no longer repeated herein.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions described in the foregoing embodiments may be modified or equivalent replaced by some or all of the technical features, and the modifications or the replacements may not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A self-switching double-power supply network is characterized in that: the system comprises a high-voltage self-switching circuit, a low-voltage self-switching circuit, a mains supply self-switching circuit and a voltage reduction circuit; the input end of a high-voltage automatic switching circuit is connected with the power supply end of a high-voltage diesel generator set, the input end of a low-voltage automatic switching circuit is connected with the power supply end of a low-voltage diesel generator set, the input end of a commercial power automatic switching circuit is connected with the power supply end of high-voltage commercial power, the output end of the high-voltage automatic switching circuit, the output end of the low-voltage automatic switching circuit and the output end of the commercial power automatic switching circuit are respectively connected with the input end of a voltage reduction circuit, and; and automatic switching devices are connected between any two of the high-voltage self-switching circuit, the low-voltage self-switching circuit and the commercial power self-switching circuit.
2. The self-switching dual power supply network according to claim 1, characterized in that: the high-voltage automatic switching circuit comprises a first circuit breaker, and the first circuit breaker is connected with a voltage reduction circuit through a tenth circuit breaker; the mains supply automatic switching circuit comprises a first mains supply branch and a second mains supply branch, the first branch comprises a seventh circuit breaker, the seventh circuit breaker is connected with the voltage reduction circuit through a tenth circuit breaker, the second branch comprises a twelfth circuit breaker, and the twelfth circuit breaker is connected with the voltage reduction circuit through a fourteenth circuit breaker; the low-voltage automatic switching circuit comprises a boosting transformer and a thirteenth circuit breaker, wherein the boosting transformer and the thirteenth circuit breaker are sequentially connected in series and then connected with a voltage reduction circuit through a fourteenth circuit breaker; and high-voltage backup automatic switching devices are arranged between the first circuit breaker and the seventh circuit breaker, between the twelfth circuit breaker and the thirteenth circuit breaker and between the tenth circuit breaker and the fourteenth circuit breaker.
3. A self-switching dual supply network according to claim 1 or 2, characterized in that: the step-down circuit comprises a fifteenth circuit breaker, a second step-down transformer and a sixteenth circuit breaker which are sequentially connected in series.
4. The self-switching dual power supply network according to claim 1, characterized in that: the system also comprises a commercial power auxiliary self-switching circuit and a low-voltage auxiliary self-switching circuit, wherein the input end of the commercial power auxiliary self-switching circuit is connected with a high-voltage commercial power supply end, the input end of the low-voltage auxiliary self-switching circuit is connected with the power supply end of a low-voltage diesel generator set, and the output end of the commercial power auxiliary self-switching circuit and the output end of the low-voltage auxiliary self-switching circuit output low-voltage power through an eleventh circuit breaker respectively; an automatic switching device is arranged between the commercial power auxiliary self-switching circuit and the low-voltage auxiliary self-switching circuit.
5. The self-switching dual power supply network according to claim 4, wherein: the commercial power auxiliary automatic switching circuit comprises a first step-down transformer and an eighth circuit breaker, wherein the first step-down transformer and the eighth circuit breaker are sequentially connected in series and then connected with an eleventh circuit breaker; the low-voltage auxiliary automatic switching circuit comprises a ninth circuit breaker, and the ninth circuit breaker is connected with an eleventh circuit breaker; and a low-voltage spare power automatic switching device is arranged between the eighth circuit breaker and the ninth circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921845048.7U CN210744823U (en) | 2019-10-30 | 2019-10-30 | Automatic switching double-power-supply network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921845048.7U CN210744823U (en) | 2019-10-30 | 2019-10-30 | Automatic switching double-power-supply network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210744823U true CN210744823U (en) | 2020-06-12 |
Family
ID=71011429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921845048.7U Active CN210744823U (en) | 2019-10-30 | 2019-10-30 | Automatic switching double-power-supply network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210744823U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668940A (en) * | 2020-07-03 | 2020-09-15 | 中国人民解放军火箭军工程设计研究院 | Power station control system and control method |
| CN113395026A (en) * | 2021-06-25 | 2021-09-14 | 徐州海伦哲专用车辆股份有限公司 | Integrated multistage voltage transformation emergency power supply device for generator set |
-
2019
- 2019-10-30 CN CN201921845048.7U patent/CN210744823U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668940A (en) * | 2020-07-03 | 2020-09-15 | 中国人民解放军火箭军工程设计研究院 | Power station control system and control method |
| CN111668940B (en) * | 2020-07-03 | 2021-04-06 | 中国人民解放军火箭军工程设计研究院 | Power station control system and control method |
| CN113395026A (en) * | 2021-06-25 | 2021-09-14 | 徐州海伦哲专用车辆股份有限公司 | Integrated multistage voltage transformation emergency power supply device for generator set |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210744823U (en) | Automatic switching double-power-supply network | |
| CN103001254B (en) | Alternating current and direct current hybrid micro-grid system | |
| CN107039965B (en) | Community distribution network power supply system | |
| CN102368612A (en) | Triple-double wiring way of medium-voltage electric distribution network | |
| CN109256849B (en) | Hotel power distribution system provided with diesel generator and application method thereof | |
| CN208028652U (en) | A kind of double host parallel redundancy power supply systems | |
| CN103545807A (en) | Medium voltage distribution network two wire closed loop operation wire connecting method | |
| CN102931587B (en) | Protect supplying electricity and power distribution car | |
| CN101710728A (en) | Method and device for supplying power to chassis equipment of communication machine room | |
| CN103457350B (en) | A kind of automatic throw-in equipment of emergency power supply | |
| CN202906202U (en) | Distribution vehicle for ensuring power supply | |
| CN107294195B (en) | On-line emergency power-saving and supplying device based on battery energy storage system and control method thereof | |
| CN110994661A (en) | Offshore wind power flexible direct current converter station compact control protection configuration method and system | |
| CN215897307U (en) | Station electric loop of high-voltage direct current converter station and high-voltage direct current converter station | |
| CN201041956Y (en) | Power supply circuit for control circuit in high voltage device | |
| CN214590546U (en) | Multi-mode combined power-taking and energy-supplying module for intelligent circuit breaker | |
| CN110504670B (en) | Power supply system and power supply method of direct-current power distribution network | |
| CN208767849U (en) | The offshore boosting station field electricity system of ring connection | |
| CN219659474U (en) | More stable incoming line circuit | |
| CN203218961U (en) | Low voltage DC power pack power strip backup apparatus for communication device group | |
| CN204794339U (en) | System for electrified adoption is hauled oneself willingly into technique fully and is replaced 10kV transformer | |
| CN207410036U (en) | A kind of alternating current-direct current mixing distribution system of high reliability | |
| CN206099516U (en) | Redundant power supply system of middling pressure wind energy converter | |
| CN205791763U (en) | Electric power system and wind power generating set | |
| CN219999093U (en) | Main and standby power supply automatic conversion control device for dust removal system and dust removal system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 450001 No.50 Dongqing street, high tech Development Zone, Zhengzhou City, Henan Province Patentee after: Zhengzhou Foguang power generation equipment Co.,Ltd. Address before: 450001 No.50 Dongqing street, high tech Development Zone, Zhengzhou City, Henan Province Patentee before: ZHENGZHOU FOGUANG POWER GENERATION EQUIPMENT Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |