CN105739362A - Transformer station measurement and control protection device - Google Patents
Transformer station measurement and control protection device Download PDFInfo
- Publication number
- CN105739362A CN105739362A CN201410757344.7A CN201410757344A CN105739362A CN 105739362 A CN105739362 A CN 105739362A CN 201410757344 A CN201410757344 A CN 201410757344A CN 105739362 A CN105739362 A CN 105739362A
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- Prior art keywords
- transformer station
- controller
- microprocessor
- protective device
- communication
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention provides a transformer station measurement and control protection device comprising a microprocessor, an AD transition module, a human-machine interface, a switching value input and output interface, a clock circuit, a memory and a CAN bus communication module. The CAN bus communication module is connected to a host computer through a CAN bus. The CAN bus is applied in communication between the transformer station measurement and control protection unit and the host computer so that the requirements of reliability, real time performance and flexibility for the system communication are satisfied; reliable operation of the system is guaranteed and anti-interference capability is increased by installing an isolating circuit.
Description
Technical field
The present invention relates to transformer station field, be specifically related to a kind of transformer station measuring and controlling protective device.
Background technology
Laminar dispersion formula structure is the important directions of comprehensive automation system of transformer substation development; the elementary cell of modular this structure of composition of transformer station's monitoring and protection; monitoring and protection unit integrates Stateful Inspection, data acquisition and real time protection; it it is the basis of whole automated system work; transformer substation communication needs higher real-time and reliability, it is therefore desirable to Realtime Capability of Communication and reliability requirement to monitoring and protection unit are high.
Summary of the invention
The present invention is directed to above-mentioned prior art Problems existing, it is proposed that a kind of transformer station measuring and controlling protective device.
Technical scheme provided by the invention is: a kind of transformer station measuring and controlling protective device; including: microprocessor; and the AD conversion module, man-machine interface, On-off signal output interface, clock circuit, memorizer and the CAN communication module that are connected with microprocessor, described CAN communication module is connected with host computer by CAN.
Further, described CAN communication module includes: CAN communication controller and interface circuit, between described microprocessor with CAN controller, being connected further by interface circuit between CAN transceiver and physical bus, described microprocessor adopts Intel16 position single-chip microcomputer 80C196KC.
Further, high speed photo coupling 6N137 is adopted to carry out electrical isolation between described interface circuit and CAN communication controller.
Further, described CAN controller adopts Philips independence CAN controller SJA1000.
Further, described interface circuit adopts the 82C250 using Philips as CAN controller interface chip.
The invention have the benefit that by CAN being applied in the communication with host computer of transformer station's monitoring and protection unit; achieve the system communication requirement to reliability, real-time and motility, ensure system energy reliably working by arranging isolation circuit and improve capacity of resisting disturbance.
Accompanying drawing explanation
Fig. 1 is a kind of transformer station measuring and controlling protective device structure chart that the present invention proposes；
Fig. 2 is a kind of transformer station measuring and controlling protective device circuit structure diagram that the present invention proposes.
Detailed description of the invention
Below in conjunction with meeting with specific embodiment, the present invention is further illustrated.
Referring to Fig. 1 and Fig. 2, wherein Fig. 1 is a kind of transformer station measuring and controlling protective device structure chart that the present invention proposes；Fig. 2 is a kind of transformer station measuring and controlling protective device circuit structure diagram that the present invention proposes.
As depicted in figs. 1 and 2; a kind of transformer station measuring and controlling protective device; including: microprocessor; and the AD conversion module, man-machine interface, On-off signal output interface, clock circuit, memorizer and the CAN communication module that are connected with microprocessor, described CAN communication module is connected with host computer by CAN.
Further, described CAN communication module includes: CAN communication controller and interface circuit, between described microprocessor with CAN controller, being connected further by interface circuit between CAN transceiver and physical bus, described microprocessor adopts Intel16 position single-chip microcomputer 80C196KC.
Further, high speed photo coupling 6N137 is adopted to carry out electrical isolation between described interface circuit and CAN communication controller.
The embodiment of the present invention adopt high speed photo coupling isolator meet the electrical response under flank speed 1Mbps.For ensureing system energy reliably working and improving capacity of resisting disturbance, circuit adopt isolated form DC/DC module power to CAN controller.
Further, described CAN controller adopts Philips independence CAN controller SJA1000.
Further, described interface circuit adopts the 82C250 using Philips as CAN controller interface chip.
In the embodiment of the present invention, the resistance of two 124 Ω in bus two ends, matching bus impedance is played an important role, ignores them, anti-interference and the reliability of data communication can be substantially reduced, even cannot communicate.82C250 pin 8 is directly grounded, and system is in high speed operation mode, for avoiding Radio frequency interference, it is possible to use shielded cable makes bus；And, bus relatively low in baud rate shorter time, be generally adopted slop control mode, the slope of raising and lowering depends on the resistance of Rs.15k～200k is the comparatively ideal span of Rs.In this mode, parallel lines or twisted-pair feeder can be used to make bus.The TX1 foot of SJA1000 is unsettled, and the current potential of RX1 foot must be maintained on about 0.5Vcc, ensures the level logic that CAN requires.
Above the present invention is described in detail, but the invention is not restricted to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, it is also possible to make a variety of changes under the premise without departing from present inventive concept.Many other can be made without departing from the spirit and scope of the present invention to change and remodeling.Should be appreciated that and the invention is not restricted to specific embodiment, the scope of the invention limits.
Claims (4)
1. transformer station's measuring and controlling protective device; it is characterized in that; including: microprocessor; and the AD conversion module, man-machine interface, On-off signal output interface, clock circuit, memorizer and the CAN communication module that are connected with microprocessor, described CAN communication module is connected with host computer by CAN；
Described CAN communication module includes: CAN communication controller and interface circuit, between described microprocessor with CAN controller, being connected by interface circuit between CAN transceiver and physical bus, described microprocessor adopts Intel16 position single-chip microcomputer 80C196KC.
2. a kind of transformer station according to claim 1 measuring and controlling protective device, it is characterised in that adopt high speed photo coupling 6N137 to carry out electrical isolation between described interface circuit and CAN communication controller.
3. a kind of transformer station according to claim 1 measuring and controlling protective device, it is characterised in that described CAN controller adopts Philips independence CAN controller SJA1000.
4. a kind of transformer station according to claim 1 measuring and controlling protective device, it is characterised in that described interface circuit adopts the 82C250 using Philips as CAN controller interface chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410757344.7A CN105739362A (en) | 2014-12-12 | 2014-12-12 | Transformer station measurement and control protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410757344.7A CN105739362A (en) | 2014-12-12 | 2014-12-12 | Transformer station measurement and control protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105739362A true CN105739362A (en) | 2016-07-06 |
Family
ID=56238956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410757344.7A Pending CN105739362A (en) | 2014-12-12 | 2014-12-12 | Transformer station measurement and control protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105739362A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106209544A (en) * | 2016-07-18 | 2016-12-07 | 柳州好顺科技有限公司 | A kind of CAN intelligent node |
| CN106209545A (en) * | 2016-07-18 | 2016-12-07 | 柳州好顺科技有限公司 | A kind of based on CAN repeater |
-
2014
- 2014-12-12 CN CN201410757344.7A patent/CN105739362A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106209544A (en) * | 2016-07-18 | 2016-12-07 | 柳州好顺科技有限公司 | A kind of CAN intelligent node |
| CN106209545A (en) * | 2016-07-18 | 2016-12-07 | 柳州好顺科技有限公司 | A kind of based on CAN repeater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160706 |