CN2453593Y - Networked low voltage bus protector - Google Patents
Networked low voltage bus protector Download PDFInfo
- Publication number
- CN2453593Y CN2453593Y CN 00221250 CN00221250U CN2453593Y CN 2453593 Y CN2453593 Y CN 2453593Y CN 00221250 CN00221250 CN 00221250 CN 00221250 U CN00221250 U CN 00221250U CN 2453593 Y CN2453593 Y CN 2453593Y
- Authority
- CN
- China
- Prior art keywords
- bus
- circuit
- chip microprocessor
- pin
- voltage bus
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a networked low voltage bus protector, the circuit components of which comprises a line protecting unit device, a field bus, a chip microprocessor, a data memory, a program memory, a data bus, an address bus, an input-output interface circuit, and a field trip circuit, wherein, the field bus is connected to a foot 32 and a foot 33 of a communicating chip U51; feet AD0 to AD7 of the U51 are connected to feet AD0 to AD7 of the chip microprocessor U32. The utility model has the advantages that the circuit structure is compact; protected information is captured by using network, and therefore, fault points can be found out and cut off quickly when faults occur on the bus. Safe and effective running and power supply of electric network can be ensured.
Description
The utility model relates to power system relay protection device, particularly a kind of low-voltage bus bar protective device.
At present, electric power system is not generally all disposed special protective device to low-voltage bus bar, when low-voltage bus bar breaks down, utilizes the I section time tripping transformer master's secondary switch and the block switch of transformer backup protection usually, to reach the purpose of isolated fault.Owing to exist the time matching problem between transformer backup protection and the 10KV route protection, the shortest time-delay that also has 0.5 second of transformer backup protection action can not be satisfied the requirement of quick isolation low-voltage bus bar fault, tends to bring great destruction to the scene.
The purpose of this utility model is, overcomes the shortcoming of above-mentioned prior art, provides a kind of network information of utilizing to differentiate fast and the networked low-voltage bus bar protective device of excision low-voltage bus bar fault point.
The purpose of this utility model is achieved through the following technical solutions: the circuit of networked low-voltage bus bar protective device is formed and is comprised the route protection cell arrangement; CAN Bus H; CANL; chip microprocessor CPU; data memory RAM; memory under program ROM; data/address bus; address bus; input/output interface circuit I/O; on-the-spot trip(ping) circuit; fieldbus is drawn by the route protection cell arrangement; 42 of chip microprocessor U32; 43; 44 pin respectively with data memory U23; memory under program U22 and input/output interface circuit I/O connect; the I/O circuit is connected with on-the-spot trip(ping) circuit; it is characterized in that CAN Bus H; CANL is connected to 32 of communication chip U51; 33 pin, the AD0-AD7 pin of U51 is connected to the AD0-AD7 pin of chip microprocessor U32.
In technique scheme, constitute the acquisition channel of the on-the-spot 10KV route protection action network information by CAN Bus H, CANL, communication chip U51, data/address bus, address bus, chip microprocessor U32.Like this; the network information of the route protection unit that the utility model just can transmit according to fieldbus; carry out analysis and judgement and logical process by the defence program that sets in advance: if 10KV route protection action message is arranged; then locking low-voltage bus bar protection; if do not receive 10KV route protection action message; then the low-voltage bus bar protection starts; judge out of order bus section, busbar section; excise on-the-spot and this fault bus associated switch fast; so just guaranteed when bus breaks down, can find the fault point rapidly; excise fault fast with minimal loss, thereby guarantee the reliability of electric power netting safe running and power supply.
With reference to the accompanying drawings and in conjunction with the embodiments the utility model is described in detail.
Fig. 1 is the utility model circuit block diagram.
Fig. 2 is the utility model electrical schematic diagram.
As depicted in figs. 1 and 2; the circuit of the utility model networking low-voltage bus bar protective device is formed and is comprised the route protection cell arrangement; CAN Bus H; CANL; chip microprocessor CPU; data memory RAM; memory under program ROM; data/address bus; address bus; input/output interface circuit I/O; on-the-spot trip(ping) circuit; fieldbus is drawn by the route protection cell arrangement; 42 of chip microprocessor U32; 43; 44 pin respectively with data memory U23; memory under program U22 and input/output interface circuit I/O connect; the I/O interface circuit is connected with on-the-spot trip(ping) circuit; it is characterized in that CAN Bus H; CANL is connected to 32 of communication chip U51; 33 pin, the AD0-AD7 pin of U51 is connected to the AD0-AD7 pin of chip microprocessor U32.
Among the embodiment, the model of circuit devcie is as follows: U51 is CAN232, and U32 is 80196KB, and U22 is 62256, and U23 is 27256.
The utility model circuit structure compactness is skillfully constructed, and utilizes network to protect information capture, realizes the effective protection to the electric power system middle voltage bus bar, has improved the ratio of performance to price of complex automatic system, has strengthened the reliability of system.
Claims (1)
1; networking low-voltage bus bar protective device; its circuit is formed and is comprised the route protection cell arrangement; CAN Bus H; CANL; chip microprocessor CPU; data memory RAM; memory under program ROM; data/address bus; address bus; input/output interface circuit I/O; on-the-spot trip(ping) circuit; fieldbus is drawn by the route protection cell arrangement; 42 of chip microprocessor U32; 43; 44 pin respectively with data memory U23; memory under program U22 and input/output interface circuit I/O connect; the I/O interface circuit is connected with on-the-spot trip(ping) circuit; it is characterized in that CAN Bus H; CANL is connected to 32 of communication chip U51; 33 pin, the AD0-AD7 pin of U51 is connected to the AD0-AD7 pin of chip microprocessor U32.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00221250 CN2453593Y (en) | 2000-08-02 | 2000-08-02 | Networked low voltage bus protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00221250 CN2453593Y (en) | 2000-08-02 | 2000-08-02 | Networked low voltage bus protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2453593Y true CN2453593Y (en) | 2001-10-10 |
Family
ID=33586171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00221250 Expired - Lifetime CN2453593Y (en) | 2000-08-02 | 2000-08-02 | Networked low voltage bus protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2453593Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100424965C (en) * | 2006-11-21 | 2008-10-08 | 国网南京自动化研究院 | The communication method of the distributed PC bus protection without the main station |
| CN1675894B (en) * | 2002-08-07 | 2010-05-26 | 恩德莱斯和豪瑟尔德国股份商业两合公司 | Device for determining and/or monitoring a physical or chemical quantity |
-
2000
- 2000-08-02 CN CN 00221250 patent/CN2453593Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1675894B (en) * | 2002-08-07 | 2010-05-26 | 恩德莱斯和豪瑟尔德国股份商业两合公司 | Device for determining and/or monitoring a physical or chemical quantity |
| CN100424965C (en) * | 2006-11-21 | 2008-10-08 | 国网南京自动化研究院 | The communication method of the distributed PC bus protection without the main station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUODIAN NANNUI TECH CO., LTD. Free format text: FORMER OWNER: NANJING NANRUI GROUP CO.,LTD. Effective date: 20100129 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20100129 Address after: Jiangsu Province, Nanjing high tech Development Zone of High Road No. 20, zip code: 210061 Patentee after: NARI Technology Development Co., Ltd. Address before: 24, Cai Xiang lane, Nanjing City, Jiangsu Province, China: 210003 Patentee before: Nanjing Nari Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20011010 |