CN104574806A - Laser fence warning prompt method for remote operation of transformer substation - Google Patents

Abstract

The invention discloses a warning prompt method for remote operation of a laser fence in a substation, and belongs to the technical field of electric power safety. The system includes a master station and a substation, and the substation includes a remote machine, a measurement and control device, a voice prompt device, an infrared sensing device, and a laser barrier, and the voice prompt device, infrared detection device and laser barrier are located on the primary equipment side of the substation, The voice prompting device includes a loudspeaker and an intermediate relay, and the measurement and control device includes an outgoing contact, and the outgoing contact is connected to a working power supply in series with the intermediate relay and the loudspeaker. In the present invention, a voice prompting device is equipped with an infrared sensing device at the same time, which can feed back the information of whether there are staff members on site to the main station, which is convenient for the operator at the main station to judge the situation on the site; at the same time, the laser fence can form an obvious mark during the on-site operation , give the on-site staff a good reminder, which can better ensure the personal safety of the on-site staff and improve work efficiency.

Description

Warning prompt method for remote operation of laser fence in substation

technical field

The invention belongs to the technical field of electric power safety, and in particular relates to a warning prompt method for remote operation of a laser fence in a substation.

Background technique

With the application of computer and communication technology in the power grid more and more widely and the AVC (automatic reactive power compensation) system put into use in the main station, the number of substation remote control operations is increasing, and it has become the main form of substation equipment operation. . However, in the actual production process, when the control personnel remotely control the primary equipment or the AVC system automatically adjusts the capacitor switch, it is easy to affect the on-site staff. Moreover, the uncertain factors that exist in the remote operation of the primary equipment may affect the on-site staff. injury to personal safety.

Contents of the invention

In view of the above problems, the purpose of the present invention is to provide a laser fence warning system and method for remote operation of substations, aiming at solving potential safety hazards caused by existing substation operations and AVC switching.

A warning prompt method for remote operation of a laser fence in a substation, characterized in that: when the control center of the master station performs remote control operation or the AVC system of the master station automatically switches capacitors, the remote machine receives the remote control drive command issued by the master station, or receives the AVC The automatic switching drive command issued by the system, and the received command is forwarded to the measurement and control device;

After the measurement and control device receives the remote control driving command or the automatic switching driving command, it controls the opening and closing of the contact, and at this time the voice prompt device and the infrared sensing device start working at the same time;

During the prompt time, if the infrared sensing device does not detect the presence of anyone, when the prompt time is over, the infrared sensing device will be turned off, and the remote control operation will be performed in the control center, or the AVC system will issue an action command to switch capacitors, and the laser fence will be turned on at the same time;

Within the prompt time, if the infrared sensing device detects that someone is present, a trigger signal is generated and fed back to the master station through the measurement and control device and the remote machine;

When the laser is blocked, the laser fence transmits the signal to the main station and the voice prompt device, and makes the voice prompt device issue an alarm;

The device used in the above method includes a main station and a substation, and the substation includes a remote machine, a measurement and control device, a voice prompt device, an infrared sensing device and a laser barrier, and the voice prompt device, infrared detection device and laser barrier are located at the primary station of the substation. On the equipment side, the voice prompting device includes a loudspeaker and an intermediate relay, and the measurement and control device includes an outgoing contact, and the outgoing contact is connected to a working power supply in series with the intermediate relay and the loudspeaker; the opening and closing state of the intermediate relay is controlled by The output contact control of the measurement and control device, the remote machine is used to receive the remote control drive command from the control center of the master station, or the automatic switching drive command from the AVC system of the master station, and the received command forwarded to the measurement and control device, the measurement and control device is used to control the closing of the opening and closing contacts according to the received remote control driving command or automatic switching driving command, the infrared sensing device is used to detect whether there is anyone on the site of the primary equipment, and pass the detection result through The measurement and control device and the remote machine feed back to the main station, and the laser barrier is turned on when the voice prompt device finishes playing and the infrared sensing device detects no one.

Further, the infrared sensing device and the voice prompt device work at the same time.

Further, the remote machine is connected to the master station through a dispatching data network, and the remote machine is connected to the measurement and control device through a substation internal network.

Further, the speaker is also connected in parallel with a warning light.

The beneficial effects of the present invention are: the present invention sets the voice prompting device near the primary equipment of the substation, and when the control center of the main station performs remote control operation or the AVC system of the main station automatically switches capacitors, the voice prompting device of the substation can be started in advance to remind the scene The staff stay away from the operating equipment; install infrared sensing equipment and laser fences near the primary equipment at the same time, and feed back the information of whether there are staff on site to the main station to remind the operators to take corresponding measures; when no one is detected on site, they can Turn on the laser fence to form a clear sign and send out a certain warning to remind the on-site personnel to stay away from the operating equipment, thereby improving the safety and reliability of the remote control operation, ensuring the personal safety of the on-site staff, and improving work efficiency.

Description of drawings

Fig. 1 is a structural diagram of a power station remote operation laser fence warning reminder system provided by an embodiment of the present invention;

Fig. 2 is a circuit diagram of a voice prompt device provided by an embodiment of the present invention;

Fig. 3 is a flowchart of a method for alerting a laser fence by remote operation of a power station provided by an embodiment of the present invention.

The names of components corresponding to the reference signs are: 1. Master station, 2. Substation, 11. Control center of the master station, 12. AVC system of the master station, 21. Remote machine, 22. Measurement and control device, 23. Voice prompt device, 24 , infrared sensing equipment, 25, laser barrier, 221, output contact, 231, loudspeaker, 232, warning light.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

The principle of the present invention is that, before the dispatching center of the master station operates a device via remote remote control, the master station first triggers and generates a remote control drive command, or when the AVC system of the master station needs to switch capacitors, an automatic switch drive command is generated, and then The remote control driving command or the automatic switching driving command is sent to the remote machine in the substation through the network channel such as the power dispatching data network, and the remote machine drives the measurement and control device in the substation through the substation network, and finally through the opening and closing of the measurement and control device The outgoing contact realizes the triggering of the on-site prompt signal for remote operation, and keeps a certain prompt time through the voice prompt. At the same time, the infrared sensing device is used to detect whether there are still people on the scene, so as to remind the on-site personnel. When all the on-site staff evacuate, the laser fence will open , to ensure safety before remote control or switching operation. In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

Fig. 1 shows the structure of the remote operation laser fence alert system for power stations provided by the embodiment of the present invention, and only shows the parts related to the embodiment of the present invention for convenience of description.

The power station remote operation laser fence warning prompt system provided by this embodiment includes a main station 1 and a substation 2, and the substation 2 includes a remote machine 21, a measurement and control device 22, a voice prompt device 23, an infrared sensing device 24 and a laser fence 25, so The voice prompting device 23, infrared detection equipment 24 and laser barrier 25 are located at the primary equipment side of the substation, as shown in Figure 2, the voice prompting device 23 includes a loudspeaker 231, an intermediate relay, and the measurement and control device 22 includes an output contact 221 , the output contact 221 is connected to the working power in series with the intermediate relay and the loudspeaker 231, and the opening and closing state of the intermediate relay is controlled by the output contact 221 of the measurement and control device. During specific implementation, the intermediate relay includes Coil HJ and two pairs of contacts HJ1 and HJ2. The output contact 221 is connected in series with the coil HJ of the intermediate relay and then connected to both ends of the working power supply. One pair of contacts HJ1 is connected in parallel between the two contacts of the output contact 221. end, the other pair of contacts HJ2 is connected in series with the speaker 231 and then connected to the working power supply. When the output contact of the measurement and control device is triggered, the coil HJ is fed with current, and the contacts HJ1 and HJ2 are closed, so that the speaker is connected to work Power supply, can work continuously. The remote machine 21 is connected to the master station 1 through a dispatching data network, and the remote machine 21 is connected to the measurement and control device 22 through a substation internal network.

In this embodiment, the remote machine 21 is used to receive a remote control drive command from the master station control center 11, or an automatic switching drive command from the master station AVC system 12, and forward the received command to The measurement and control device 22, the measurement and control device 22 is used to control the closing of the output contact 221 according to the received remote control drive command or automatic switching drive command, and the infrared sensing device 24 is used to detect whether there is anyone on the primary equipment site, and will detect The result is fed back to the main station 1 through the measurement and control device 22 and the remote machine 21, and the laser barrier 25 is turned on when the voice prompt device 23 finishes playing and the infrared sensing device 24 detects no one.

The embodiment of the present invention realizes that the voice prompting device and the infrared sensing device of the substation can be started in advance when the control center of the main station performs remote control operation or the AVC system of the main station automatically switches capacitors by setting the voice prompting device, infrared sensing equipment and laser fence. And the laser fence, to remind the staff on site to stay away from the operating equipment to ensure safety. Preferably, in the voice prompt device, the loudspeaker 231 is also connected in parallel with a warning light 232, where the sound signal, electrical signal, and light signal are combined to effectively remind the staff on site, and once the equipment is remotely operated Keep away from operating equipment at all times, further improving safety at work.

For the situation of the remote control operation of the control center, in the actual implementation, a remote control prompt button is provided on the monitoring interface of the master station, and the prompt button is linked with the output contact of the measurement and control device, and then the output contact is connected with an intermediate relay through an intermediate relay. A voice prompt near the device connects. When the master station terminal performs remote control operation, the operator on duty at the master station terminal can first operate the prompt button. After the prompt button is triggered, the contact of the measurement and control device will drive the intermediate relay to close, and the on-site voice prompt device will be connected to remind the on-site staff once. The equipment needs to be operated by remote control, keep away from the operating equipment, and the prompt time set by the prompt device is 30s. After 30s, the operator on duty at the master station can operate remotely.

For the case of automatic switching of capacitors by the AVC system, set a 30s program delay after the AVC system starts the switching capacitor program, and at the same time set the AVC system to start the output contact when the automatic switching drive command is issued, and drive the voice prompt device to work. On-site staff capacitors will be switched and kept away from operating equipment. 30s after the AVC system issues the automatic switching drive command, it will automatically issue the switching capacitor action command, then the on-site voice prompt device will have 30s to remind the on-site staff to stay away from the operating equipment.

When the voice prompt device is started, in order to increase the reliability of the alarm prompt, an infrared sensing device is installed near the primary equipment at the same time to sense whether there are staff near the equipment, and the sensing result is fed back to the master station. In this embodiment, the infrared sensing device and the voice prompting device work at the same time period, and the infrared sensing device is not working at ordinary times. Only when the voice prompting device is working, the infrared sensing device is started, and the infrared sensing device will automatically maintain 30s, the voice prompt ends after 30s, and the infrared sensing device is turned off again, which can prevent the infrared sensing device from feeding back useless information to the master station.

After the voice prompt device is working and the infrared sensing device is started, if there are staff near the infrared sensing device, the infrared sensing device can sense it. At this time, the induction normally open contact of the infrared sensing device will be closed immediately, and then a Relay, after the coil of the relay is turned on, its normally open contact is closed, which will output a trigger signal and send it back to the measurement and control device, and then feed back to the operator at the master station through the remote machine, which can suspend the remote control or switch on The switching action can also regenerate the remote control driving command or the automatic switching driving command. The voice prompt device will give voice prompts and time again. When the prompt time is over and the infrared sensing device detects no one, the laser fence will be activated to ensure that personnel will not approach the operation. equipment.

In addition, the embodiment of the present invention also provides a warning reminder method for remote operation of a laser fence in a substation, which is applied to the above system, as shown in Figure 3, the implementation method includes the following steps:

S300. When the control center of the master station performs remote control operation or the AVC system of the master station automatically switches capacitors, correspondingly generate a remote control drive command or an automatic switch drive command.

S301. The remote computer receives the remote control drive command issued by the master station, or receives the automatic switching drive command issued by the AVC system, and forwards the received command to the measurement and control device;

S302. After the measurement and control device receives the remote control driving command or the automatic switching driving command, it controls the opening and closing contacts, and at this time the voice prompting device and the infrared sensing device start working at the same time;

S303. During the prompt time, if the infrared sensing device does not detect that anyone is present, when the prompt time is over, the infrared sensing device is turned off, and a remote control operation is performed in the control center, or the AVC system sends an action command of switching capacitors, and at the same time, the laser fence is turned on ;

S304. During the prompt time, if the infrared sensing device detects that someone is present, a trigger signal is generated and fed back to the master station through the measurement and control device and the remote computer;

When the laser is blocked, the laser fence transmits the signal to the main station and the voice prompt device, and makes the voice prompt device sound an alarm.

In summary, the system of the present invention is equipped with a voice prompt device and is equipped with infrared sensing equipment at the same time, which can feed back the information of whether there are staff members on site to the main station terminal, which is convenient for the operator at the main station terminal to judge the situation on the site, and improves the time of remote control and switching operations. At the same time, the laser fence can form an obvious mark during the on-site operation, which can give the on-site staff a good reminder, better ensure the personal safety of the on-site staff, and arrange work reasonably to improve work efficiency.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (4)

1. transformer station's operated from a distance laser fence alarm and prompt method, it is characterized in that: when straighforward operation or main website AVC system automatic switching capacitor are carried out in main website regulation and control center, remote termination receives the Remote driving order that main website sends, or receive the automatic switching that AVC system sends and drive order, and by the transferring order that receives to measure and control device;

After measure and control device receives Remote driving order or automatic switching driving order, control to output junction closure, now sound prompt device and infrared induction equipment are started working simultaneously;

In prompt time, if infrared induction equipment has not detected that people is on the scene, after terminating when prompted, infrared induction device shutdown, and carry out straighforward operation at regulation and control center, or AVC system sends switched capacitor action command, opens laser fence simultaneously;

In prompt time, if infrared induction equipment Inspection is to there being people on the scene, then generates trigger pip and feed back to main website by described measure and control device, remote termination;

When laser is blocked, signal transmission to main website and sound prompt device, and makes sound prompt device give the alarm by laser fence;

The device that said method uses comprises main website (1), transformer station (2), described transformer station (2) comprises remote termination (21), measure and control device (22), sound prompt device (23), infrared induction equipment (24) and laser fence (25), described sound prompt device, infrared detection equipment and laser fence are positioned at the primary equipment side of transformer station, described sound prompt device comprises loudspeaker (231), auxiliary reclay, described measure and control device (22) comprises outputs contact (221), describedly output contact and described auxiliary reclay, loudspeaker in series cut-in operation power supply, the folding condition of described auxiliary reclay is controlled by the contact (221) of outputing of described measure and control device (22), described remote termination (21) drives order for receiving the Remote coming from main website regulation and control center (11), or the automatic switching coming from main website AVC system (12) drives order, and by the transferring order that receives to measure and control device, described measure and control device is used for driving order or automatic switching to drive order control to output junction closure according to the Remote received, whether described infrared induction equipment has people for detecting primary equipment scene, and by testing result by described measure and control device, remote termination feeds back to main website, described laser fence is opened to time nobody when the complete and infrared induction equipment Inspection of sound prompt device speech play.

2. transformer station's operated from a distance laser fence alarm and prompt method as claimed in claim 1, is characterized in that: described infrared induction equipment and described sound prompt device worked with the period.

3. transformer station's operated from a distance laser fence alarm and prompt method as claimed in claim 1, it is characterized in that, described remote termination is connected by dispatch data net with described main website, and described remote termination is connected by transformer station's in-house network with described measure and control device.

4. transformer station's operated from a distance laser fence alarm and prompt method as claimed in claim 1, it is characterized in that, described loudspeaker is also parallel with warning lamp (232).