CN201369607Y - Electric equipment cabinet door opening-and-closing alarm system - Google Patents

Abstract

An electric equipment cabinet door opening-and-closing alarm system is characterized in that the system comprises a cabinet switch contact, a remote detection and control device, a local background machine and a control station, wherein the cabinet door switch contact is arranged on a controlled cabinet door and used for detecting a cabinet door switch state, the remote detection and control device is arranged inside a transformer substation, collects state information of the cabinet door switch contact in real-time and respectively transmits the state information to the local background machine and the control station, the local background machine receives input signals of the remote detection and control device, when detecting a cabinet door opening state without permission, the local background machine utilizes sound and light signals as alarming output signals, the control station receives the output signals of the remote detection and control device via a control station front-end processor according to conventions, transmits the output signals to a control station monitoring work station via a control station server, and correspondingly outputs sound and light alarming signals in the control station monitoring work station. The electric equipment cabinet door opening-and-closing alarm system can effectively stop safety accidents caused by opening the cabinet door by mistake.

Description

Power equipment cabinet door opening and closing alarm system

technical field

The utility model relates to a safety device for an electric power system, in particular to an electric equipment cabinet door opening and closing alarm system for ensuring safety.

Background technique

Although the logical rationality and correctness of the microcomputer protection system equipment ensure the safe production of electric power, there will also be logic errors and lock damage. In this case, it is necessary to use an emergency unlocking key. Obviously, the "safety" in the emergency unlocking situation cannot be "under control". In actual use, there have been accidents where the emergency unlock key was used to open the wrong cabinet door in a non-"in-control" state, resulting in personal electric shock.

At present, the power communication and dispatching automation system has realized remote monitoring of important equipment in substations, but it has not realized monitoring of important screen frame doors, especially in unattended substations, it is more likely to happen due to running the wrong cabinet, resulting in " Accidents of "entering the electrified interval by mistake" and "three mistakes" of relay protection.

Utility model content

The utility model is to avoid the disadvantages of the above-mentioned prior art, and provides a power equipment cabinet door opening and closing alarm system, by utilizing the existing communication and scheduling automation system, it can realize the middle setting without mechanical interlocking and electromagnetic lock. Cabinets or other types of equipment are separated from the protection of the computer protection system to prevent misintrusion into the electrified interval, and also enable the opening and closing of important equipment screen cabinets to enter the effective line of sight of the operating personnel on duty.

The utility model solves the technical problem and adopts the following technical solutions:

The cabinet door switch contact set on the controlled cabinet door is used to detect the status of the cabinet door switch;

The remote measurement and control device installed in the substation collects the state information of the switch contacts of the cabinet door in real time through the network and transmits them to the local background machine and the centralized control station respectively;

The local background machine receives the input signal of the remote measurement and control device through the network, and uses the sound and light signal as the alarm output signal when detecting an unauthorized cabinet door opening state;

The centralized control station receives the output signal of the remote measurement and control device through the network according to the protocol by the front-end processor of the centralized control station, transmits it to the monitoring workstation of the centralized control station through the server of the centralized control station, and outputs the corresponding sound and light alarm signal in the monitoring workstation of the centralized control station .

Compared with the prior art, the beneficial effects of the utility model are reflected in:

1. This utility model is aimed at the centralized control station and unattended substation mode commonly used in the current power system, which can enable the opening and closing of the important equipment screen cabinets in the unattended substation under the effective sight of the operator on duty in the centralized control station. Effectively prevent safety accidents caused by opening the wrong cabinet door.

2. The utility model makes full use of the existing electric power communication and dispatch automation system, and is easy to implement.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the utility model system.

Fig. 2 is the schematic diagram of the switch contact circuit setting of the utility model.

The utility model will be further described below through specific embodiments in conjunction with the accompanying drawings.

Detailed ways

Referring to Fig. 1, the system composition in the present embodiment includes:

Cabinet door switch contact 01, set on the controlled cabinet door, used to detect the switch state of the cabinet door;

The remote measurement and control device is used to collect the status information of the cabinet door switch contacts in real time and transmit them to the local background machine and the centralized control station respectively;

The local background machine receives the input signal of the remote measurement and control device, and uses the sound and light signal as the alarm output signal when it detects the opening state of the cabinet door without permission;

The centralized control station is composed of the central control station front-end processor, the centralized control station server and the centralized control station monitoring workstation; the centralized control station front-end processor receives the output signal of the remote measurement and control device according to the protocol, and transmits the output signal in the centralized control station through the centralized control station server. station monitoring workstation, correspondingly output sound and light alarm signals in the centralized control station monitoring workstation.

Referring to Figure 2, the label 01 in the circuit is the door switch contact set on the controlled cabinet door, WJ is the coil of the position relay, and WJ1 is the contact of the position relay.

In specific implementation, the cabinet door switch contact 01 is set in the power loop of the position relay coil WJ, and the position relay contact WJ1 is set in the power loop of the sound and light alarm control loop. When the controlled cabinet door is opened, the cabinet door switch contact 01 is closed, the position relay coil WJ at this point is energized, the position relay contact WJ1 is closed, and there is a control signal output in the signal terminal line 13 and signal terminal 14, the control signal Send an instruction to open the equipment cabinet door through the remote measurement and control device to the local background computer, and the local background computer will automatically compare the instruction information with the database information. The sound and light alarm command is responded by the sound and light alarm, and the on-site staff and the monitoring personnel of the centralized control station are notified. If it matches the setting information, it will remain silent and no sound and light alarm signal will be generated.

In the specific implementation, the switch contact 01 of the cabinet door selects a straight-column travel switch.

Set the name, action behavior and sound type of each measured point in the local background computer software; in the system configuration, make full use of the existing power communication network and dispatching automation system of the power system.

When the work requires, or when the emergency unlock key needs to be used, the operator sets the cabinet door to be opened on the monitoring workstation of the centralized control station, so that when the equipment cabinet door and the protection cabinet door are opened within the allowable range, it will not Send signals and local audible and visual alarm signals to the operation monitoring personnel of the monitoring station. If the cabinet door and protective cabinet door are opened by mistake, the system will send a signal to the operation monitoring personnel of the monitoring station, and at the same time send out an audible and visual alarm signal in the local background machine, so as to stop and warn the occurrence of misoperation in time; The operator of the cabinet door should stop working immediately after the sound and light alarm signal is sent out, and re-check the opening equipment to prevent the phenomenon of "mistakenly entering the charged interval" and avoid accidents.

Claims (1)

1, power equipment cabinet door opens and closes warning system, it is characterized in that its system's formation comprises:

Be arranged on the cabinet door switch contact (01) on the controlled cabinet door, be used for the detecting box door opening and closing state;

Be arranged on the remote monitor device in the transformer station, gather the state information of described cabinet door switch contact during by network implementation and be sent to local background computer and concentrator station respectively;

Local background computer receives the input signal of described remote monitor device by network, when the cabinet door opening that detects without permission, with sound and light signal as alarm output signal;

Concentrator station is pressed stipulations receiving remote measure and control device output signal with the concentrator station front end processor by network, is transmitted in the concentrator station monitor workstation by the concentrator station server, corresponding output sound and light alarm signal in described concentrator station monitor workstation.

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