CN107046328A - Automation of transformation substations equipment fault judgement and self-healing system - Google Patents

Abstract

The invention provides a fault judgment and self-healing system for substation automation equipment, which is mainly composed of a host and a monitoring background; the host includes a casing and a circuit device, and the circuit device of the host includes an Ethernet transceiver module, a single-chip microcomputer module, a touch screen, an output interface module, Logic controller, relay group, socket group and power module; the Ethernet transceiver module of the host computer is electrically connected with the bidirectional signal of the controlled automation equipment through the switch in the substation; the socket group is electrically connected with the controlled automation equipment in the substation; The IP detection fault of the automatic control equipment; the logic controller adopts the three modes of fault automatic, sequence automatic and manual according to the instructions of the single-chip microcomputer module or the monitoring background, and realizes the automatic restart of the controlled automation equipment that has a soft fault through the relay group to cut off/on the power supply. heal. The invention has simple structure, low cost, convenient installation and use, can greatly improve work efficiency, and save a lot of manpower and material costs.

Description

Fault judgment and self-healing system for substation automation equipment

technical field

The invention relates to the technical field of substation equipment monitoring, in particular to a fault judgment and self-healing system for substation automation equipment.

Background technique

With the continuous development of power automation level, automation technology and equipment are widely used in substations. The substation automation system is a power comprehensive automation system that uses data acquisition, computer and network communication technologies to monitor, measure, automatically control and coordinate the operating conditions of substations in real time through the function merging and optimal combination of secondary equipment in substations. The automation equipment in the substation automation system generally has a corresponding IP address; in the substation automation system, such as routers, encryption machines, power collection devices, station control layer switches, master control equipment and other automation equipment in the long-term operation, there will inevitably be software Crash failure or hardware equipment failure; operating experience shows that about 90% of the failures are software crash failures, which can be resolved by restarting the power supply of the device. The failure of any equipment in the substation automation system will have a negative impact on the operation of the substation. Therefore, it is necessary to detect and deal with equipment failures in the substation automation system in time.

At present, the detection of substation automation equipment faults mainly depends on manual inspection, and the elimination of substation automation equipment faults depends entirely on manual on-site elimination, especially for soft crashes that account for about 90% of the total substation automation equipment faults. Going to the site to restart the equipment to eliminate the fault, although the operation is simple, however, there is a set of strict procedures for entering the substation: applying for fault elimination, invoicing, permitting, rushing to the site, performing safety readings, and finally carrying out work, involving three or four The departments coordinate together, and several procedures are circulated. The current way of working is inefficient, resulting in a lot of waste of manpower and material resources. This status quo needs to be changed urgently.

Contents of the invention

The purpose of the present invention is: aiming at the problems in the background technology, provide a kind of substation automation equipment failure judgment and self-healing system, this system can automatically judge the substation automation equipment failure, automatically restart the equipment when the equipment software crashes, In the case of equipment hardware damage, it will automatically alarm and prompt maintenance, thereby effectively improving the efficiency of fault detection and processing of substation automation equipment, saving manpower and material resources, and ensuring safe and reliable operation of substations.

The technical solution of the present invention is: the substation automation equipment fault judgment and self-healing system of the present invention, its structural characteristics are: including a host computer and a monitoring background;

The above-mentioned host is an all-in-one machine composed of a casing and a circuit device. The circuit device of the host includes an Ethernet transceiver module, a single-chip microcomputer module, a touch screen, an output interface module, a logic controller, a relay group, a socket group and a power supply module; a touch screen and a socket The group is fixedly arranged on the casing;

The socket group includes a number of power sockets, and the number of power sockets in the socket group is determined according to the number of controlled automation equipment in the substation; the relay group includes the same number of relays as the power sockets in the socket group; the power module and each power socket of the socket group It has a power input terminal and a power output terminal respectively; the logic controller has a signal input terminal, a communication terminal, a control signal output terminal, a power input terminal and a power output terminal; each relay in the relay group has a control signal input terminal, a power input terminal and a power output;

The single-chip microcomputer module is electrically connected with the two-way signal of the Ethernet transceiver module; the touch screen is electrically connected with the two-way signal of the single-chip microcomputer module; the logic controller is electrically connected with the single-chip module signal through its signal input terminal through the output interface module; the logic controller is connected with the monitoring background through its communication terminal Remote interactive communication; the control signal input end of each relay in the relay group is electrically connected with the control signal output end of the logic controller; the power input end of each power socket in the socket group is respectively electrically connected with the power output end of each relay in the relay group ; The power input end of the power module is electrically connected to the power output end of the logic controller; the power output end of the power module provides working power for the single-chip microcomputer module and the touch screen;

When in use, the host is installed in the substation; the Ethernet transceiver module of the host circuit device is electrically connected to the controlled automation equipment in the substation with bidirectional signals through the switch in the substation; The power input terminals of the controlled automation equipment are electrically connected; the power input terminals of the logic controller and the power input terminals of each relay in the relay group are externally connected to the AC220V power supply in the substation.

The present invention has positive effects: (1) The substation automation equipment fault judgment and self-healing system of the present invention is composed of a host computer installed in the substation and a remote monitoring background, the system structure is simple, the cost is not high, and the host computer is integral Structure, small size, easy to select the location in the substation, convenient installation and connection. (2) The fault judgment and self-healing system for substation automation equipment of the present invention has three power supply self-healing modes: fault automatic, sequential automatic and manual, which are convenient and flexible to operate and have good working reliability. (3) The fault judgment and self-healing system of substation automation equipment of the present invention can automatically and effectively solve the soft crash faults accounting for about 90% of the total faults of substation automation equipment when in use, and can also detect hardware faults in time and issue an alarm Information, compared with the manual inspection and manual elimination mode in the existing technology, can improve work efficiency by more than 85%, and can save a lot of manpower and material costs.

Description of drawings

Fig. 1 is a schematic block diagram of the structure of the system of the present invention, which also schematically shows its connection relationship with the substation switch and the controlled automation equipment.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

(Example 1)

As shown in Fig. 1, the substation automation equipment fault judgment and self-healing system of this embodiment is mainly composed of a host computer and a monitoring background.

The host is an all-in-one machine composed of a casing and a circuit device. The circuit device of the host is mainly composed of an Ethernet transceiver module, a single-chip microcomputer module, a touch screen, an output interface module, a logic controller, a relay group, a socket group and a power supply module. Among them, the touch screen and the socket group are fixedly arranged on the casing.

The socket group includes several power sockets, and the number of power sockets in the socket group is determined according to the number of controlled automation equipment in the substation. In this embodiment, 6 power sockets are preferably used. The relay group includes the same number of relays as the power outlets of the outlet group. Each power socket and power module of the socket group has a power input terminal and a power output terminal respectively; the logic controller is provided with a signal input terminal, a communication terminal, a control signal output terminal, a power input terminal and a power output terminal; There are control signal input terminals, power input terminals and power output terminals.

The single-chip microcomputer module is electrically connected with the two-way signal of the Ethernet transceiver module; the touch screen is electrically connected with the two-way signal of the single-chip microcomputer module; the logic controller is electrically connected with the single-chip module signal through its signal input terminal through the output interface module; the logic controller is connected with the monitoring background through its communication terminal Remote interactive communication; the control signal input end of each relay in the relay group is electrically connected with the control signal output end of the logic controller; the power input end of each power socket in the socket group is respectively electrically connected with the power output end of each relay in the relay group ; The power input terminal of the power module is electrically connected with the power output terminal of the logic controller; the power output terminal of the power module provides working power for the single-chip microcomputer module and the touch screen.

When in use, the host is installed in the substation; the Ethernet transceiver module of the host circuit device is electrically connected to the controlled automation equipment in the substation with bidirectional signals through the switch in the substation; The power input terminal of the controlled automation equipment is electrically connected; one power socket is connected to one controlled automation equipment; the power input terminal of the logic controller and the power input terminals of each relay in the relay group are externally connected to the AC220V power supply in the substation.

In this embodiment, the logic controller preferably adopts a Siemens ST30 logic controller.

In the circuit device of the host:

The Ethernet transceiver module is used to realize the information exchange between the single-chip microcomputer module and the controlled automation equipment in the substation through the switch in the substation.

The single-chip microcomputer module is used to send detection commands, perform fault judgment, and issue corresponding action instructions and display information according to fault types. In this embodiment, the detection method of the single-chip microcomputer module is to ping the IP address of the controlled automation equipment in the substation in turn.

The touch screen is used to input the IP address and information display of the controlled automation equipment in the substation.

The output interface module is used to provide a signal channel for the single-chip microcomputer module to send information and instructions to the logic controller.

The logic controller is used to manage the logical relationship of the self-healing power supply, control the action of the relay group to turn on or off the power supply of the socket group according to the action instructions of the single-chip microcomputer or the monitoring background, realize the information interaction with the monitoring background and provide DC24V for the power module power supply.

The relay group, under the control of the logic controller, realizes the automatic restart of the controlled automation equipment in the substation by controlling the power off/on of the power socket in the socket group.

The monitoring background is used to provide remote monitoring screens, select the self-healing mode of the controlled equipment, display the on-site working scene, and send self-healing action instructions to the logic controller remotely.

The substation automation equipment fault judgment and self-healing system of the present embodiment, its working method is as follows:

①Equipment installation and startup: Set the host in the substation, connect the Ethernet transceiver module of the host to the switch in the substation; connect the logic controller to the monitoring background for remote communication; The power input terminal of the control automation equipment is electrically connected, and then the host is connected to the AC220V power supply in the substation; the monitoring background is started, and the system starts to work;

②IP address input: Input the IP address of each controlled automation device through the touch screen of the host, and send it to the single-chip microcomputer module for storage;

3. IP address inspection: the single-chip microcomputer module takes turns to ping the IP address of each controlled automation device every other set time period; in the present embodiment, the set time period is preferably 2 minutes;

④ Fault judgment: If the single-chip microcomputer module cannot ping the IP address of a controlled automation device within two consecutive ping time periods, the single-chip microcomputer module will judge and record that the controlled automation device has failed, and send the fault information to the touch screen, logic Controller and monitoring background; at the same time, the single-chip microcomputer module judges whether the fault of the controlled automation equipment that has failed is the second fault within 4 consecutive rounds of ping time periods, if so, enter step ⑨; if not, then Go to step ⑤;

⑤Power supply self-healing mode selection: The monitoring background selects the power supply self-healing mode through its monitoring interface. If the monitoring background selects the fault automatic mode, go to step ⑥; if it is the sequential automatic mode, go to step ⑦; Go to step ⑧;

⑥Fault automatic mode restart: The logic controller selects and controls the action of the relay in the relay group corresponding to the controlled automation equipment that has failed according to the information sent by the single-chip microcomputer module, and disconnects the power supply of the corresponding power socket in the socket group, thereby shutting down Develop the power supply of the failed controlled automation equipment and continue for a set power-off time interval. During the power-off process, the logic controller no longer responds to the status information of the failed controlled automation equipment sent by the microcontroller; power-off When the time interval expires, the logic controller controls the action of the selected relays in the relay group, restores power to the controlled automation equipment that has been disconnected from the power supply, and restarts the equipment; then returns to step ②; in this step, the set power-off time interval Preferably 5 minutes are used;

⑦Sequential automatic mode restart: When the built-in preset automatic restart time of the controlled automation equipment arrives, the logic controller controls the relays in the relay group to act successively according to the set sequence, and automatically restarts the corresponding controlled automation equipment in turn. Then return to step ②;

⑧Manual mode restart: The monitoring personnel use the monitoring screen in the monitoring background to manually send an instruction to restart a certain controlled automation equipment, and the logic controller controls the corresponding relay action in the relay group according to the monitoring background instructions, and directly The device restarts, and then returns to step ②;

⑨Determination of hardware failure: The single-chip module determines that the controlled automation equipment that has been judged to be faulty twice within four consecutive ping time periods has a hardware failure. Fault, please carry out on-site investigation" text warning message, and then return to step ②.

The above embodiments are descriptions of specific implementations of the present invention, rather than limitations of the present invention. Those skilled in the relevant technical fields can also make various transformations and changes without departing from the spirit and scope of the present invention. Corresponding equivalent technical solutions, therefore all equivalent technical solutions should fall into the patent protection scope of the present invention.

Claims (1)

1. A substation automation equipment fault judgment and self-healing system, characterized in that: it includes a host computer and a monitoring background; The host is an all-in-one machine composed of a casing and a circuit device, and the circuit device of the host includes an Ethernet transceiver module, a single-chip microcomputer module, a touch screen, an output interface module, a logic controller, a relay group, a socket group and a power supply module; the touch screen and The socket group is fixedly arranged on the casing; The socket group includes a number of power sockets, and the number of power sockets in the socket group is determined according to the number of controlled automation equipment in the substation; the relay group includes the same number of relays as the power sockets in the socket group; the power module and each power socket of the socket group It has a power input terminal and a power output terminal respectively; the logic controller has a signal input terminal, a communication terminal, a control signal output terminal, a power input terminal and a power output terminal; each relay in the relay group has a control signal input terminal, a power input terminal and a power output; The single-chip microcomputer module is electrically connected with the two-way signal of the Ethernet transceiver module; the touch screen is electrically connected with the two-way signal of the single-chip microcomputer module; the logic controller is electrically connected with the single-chip module signal through its signal input terminal through the output interface module; the logic controller is connected with the monitoring background through its communication terminal Remote interactive communication; the control signal input end of each relay in the relay group is electrically connected with the control signal output end of the logic controller; the power input end of each power socket in the socket group is respectively electrically connected with the power output end of each relay in the relay group ; The power input end of the power module is electrically connected to the power output end of the logic controller; the power output end of the power module provides working power for the single-chip microcomputer module and the touch screen; When in use, the host is installed in the substation; the Ethernet transceiver module of the host circuit device is electrically connected to the controlled automation equipment in the substation with bidirectional signals through the switch in the substation; The power input terminals of the controlled automation equipment are electrically connected; the power input terminals of the logic controller and the power input terminals of each relay in the relay group are externally connected to the AC220V power supply in the substation.