CN202268901U - Distributed controller for simple communication - Google Patents

Abstract

The utility model discloses a distributed controller for concise communication, which includes a communication manager and several extension controllers. The extension controller communicates with the communication manager through a field bus. Network communication module for communication connection. The utility model has low network cost, and only needs one network communication module to realize the connection between all extension controllers and the background controller system. The background controller system can control the power conditions of each extension controller's operating line section and monitor the information of the power grid. , to optimize the allocation of power resources, the extension controller is easy to expand, and the extension controller does not need to be directly connected to the background, so it has the advantages of less resources, low carbon and environmental protection.

Description

A Distributed Controller with Simple Communication

technical field

The utility model relates to a power data transmission and networking equipment, in particular to a distributed controller with simple communication.

Background technique

The current method of power data transmission and networking is: an extension controller is configured with a GPRS/CDMA wireless network or Ethernet communication module, and then connected to the background control system through the GPRS/CDMA service platform or twisted pair. The disadvantage of this communication method is that as many extensions as there are, multiple wireless network modules and Sim cards, or Ethernet modules and twisted-pair wires need to be configured, which results in high cost of network construction, takes up a lot of resources, and does not meet the requirements of low-carbon environmental protection. .

Contents of the invention

In view of the above-mentioned problems, the utility model provides a distributed controller with simple communication, low cost of network construction, less resource occupation, low carbon and environmental protection.

The technical scheme that the utility model adopts for solving its technical problem is:

A distributed controller with simple communication, including a communication manager and several extension controllers, the extension controllers communicate with the communication manager through a field bus, and the communication manager is equipped with a network communication network for communication with the background controller system module.

As a preferred implementation manner, the field bus is a Controller Area Network (CAN).

As a preferred embodiment, the network communication module is a GPRS/CDMA module or an Ethernet module.

As a preferred implementation manner, the extension controller is provided with a communication interface.

As a preferred implementation, the communication manager is provided with a man-machine interface for the working status of the extension controller.

The beneficial effects of the utility model are: the utility model has a low cost of setting up a network, and only one network communication module is needed to realize the connection between all extension controllers and the background controller system, and the background controller system can control the operation lines of each extension controller The power situation of the segment, monitor the grid information, and optimize the allocation of power resources. The extension controller is easy to expand, and the extension controller does not need to be directly connected to the background, so it has the advantages of less resources, low carbon and environmental protection.

Description of drawings

Further explanation is carried out below in conjunction with accompanying drawing and specific embodiment:

Fig. 1 is the system composition block diagram of the present utility model.

Detailed ways

With reference to Fig. 1, a kind of simple communication distributed controller of the present utility model, comprises communication manager and several extension controllers, extension controller communicates with communication manager through field bus, is provided with in the communication manager for communicating with background The network communication module for the communication connection of the controller system. The communication manager is preferably provided with a man-machine interface for the working status of the extension controller. The human-machine interface can directly display the status of the high-voltage switch of each extension controller, and has a variety of communication protocols. The communication protocol mode between each extension and the host can be modified through this communication manager. The main communication modes are: 101 balanced, 101 unbalanced, 104, etc.

In the embodiment of Fig. 1, the extension controller includes A phase Ia, B phase Ib, C phase Ic, zero-sequence Io current sampling circuit, metering circuit, Ua, Ub, Uc voltage sampling circuit, system power supply processing, switch-in detection , Bus receiving circuit, extension main control unit, man-machine interface, opening circuit, clock circuit, etc. In addition to the network communication module and the human-machine interface, the communication manager also includes a clock circuit, a bus receiving circuit, and a host control unit.

The primary side of the three-phase and zero-sequence sampling circuit is respectively connected to the three-phase transformers of the grid A, B, and C; the metering circuit combines the collected grid current and grid PT voltage to comprehensively analyze the current power factor, active power, reactive power, etc. of the grid. Work power, etc.; system power management is to convert the external power supply voltage within a specific range into the working power required by the controller; open-in detection refers to the detection of all connected high-voltage switches, including opening and closing contacts, energy storage contacts, and locking contacts. Isolate and monitor the switching value; the bus receiving circuit realizes the connection between each extension controller and the communication manager; the man-machine interface includes indicator light display, liquid crystal display, button operation, etc.; the output circuit includes the electric power switching operation of the high-voltage switch Output, energy storage operation output, etc. are controlled; the clock circuit is a module with precision timing, battery, and battery charging circuit, which accurately records the time point of line failure, accurate to ms level; the network communication module of the host is the main control of the host The medium for communicating between the unit and the background control system, the network communication module is preferably a GPRS/CDMA module or an Ethernet module. In addition, the extension controller of the present utility model can also be further provided with a communication interface, such as the 485/232 interface and the GPRS interface in this embodiment, the extension controller can connect with the computer by using the 485/232 interface, and the GPRS interface can Communicate directly with the background control system.

As a preferred implementation, the field bus is a controller area network (CAN). As shown in this embodiment, in this case, the bus receivers on the communication manager and the extension controller are respectively set as CAN receiving circuits. The network nodes that can be connected by CAN communication mode are unlimited, the transmission distance is relatively long, and the transmission speed can reach 1Mbit/s. The error detection and management module is integrated inside to improve the real-time and reliability of communication.

When the utility model is working, the extension controller inputs data such as A-phase current, B-phase current, C-phase current, zero-sequence current, Ua-phase voltage, Ub-phase voltage, and switch state to the main control unit through the sampling circuit, which can realize three Segment protection, reclosing function, small current grounding protection, function and other logics, analyze the operation of the power grid, and provide data for the optimal deployment of the power grid; the communication manager connects with the controllers of each extension through the CAN receiving circuit, and the control of each extension Protect the switch status of the line section, and transmit the line operation status to the communication manager in real time, and the communication manager is connected to the background controller system through Ethernet or GPRS/CDMA module, and the background control system receives the information of each extension from the communication manager in real time. The utility model is characterized in that a communication manager is used as the host to realize the communication between the background control system and each extension controller, which can realize functions such as four remotes and time synchronization for each extension controller, and realize centralized management and deployment.

The implementation of the utility model is not limited by the above-mentioned examples, as long as it achieves the technical effect of the utility model by basically the same means, it should belong to the protection scope of the utility model.

Claims (5)

1. A distributed controller for concise communication is characterized in that it includes a communication manager and some extension controllers, the extension controllers are connected to the communication manager through a field bus, and the communication manager is provided with a communication manager for communicating with the background controller system. Network communication module for communication connection. 2. A distributed controller with concise communication according to claim 1, characterized in that the field bus is a Controller Area Network (CAN). 3. A distributed controller with simple communication according to claim 1, characterized in that said network communication module is a GPRS/CDMA module or an Ethernet module. 4. A distributed controller with simple communication according to claim 1, characterized in that a communication interface is provided in the extension controller. 5. A distributed controller with simple communication according to claim 1, characterized in that the communication manager is provided with a man-machine interface for the working status of the extension controller.

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