The unattended substation image monitoring and security alarm system implements real-time monitoring of the following targets within the substation:
• Realize remote monitoring and monitoring of scenarios in the substation area;
• Monitor the operational status of important operating equipment such as transformers and circuit breakers in substations;
• Monitor the appearance of high-voltage equipment such as CT, PT, cable joints and insulators in substations;
• Monitor the disconnected state of disconnector and grounding switch in substations;
• Monitor the appearance of other oil-filled and flammable equipment in the substation;
• Monitor the main indoor environment (main control room, high voltage room, capacitor room, independent communication room, etc.) in the substation;
• Realize the fire prevention and anti-theft automatic monitoring of the key parts of the substation station, which can perform peripheral alarm linkage.
Networking Description At present, there are usually the following transmission methods for substation image surveillance and security alarm systems:
1. Existing Ethernet substations: Each substation host requires one RJ45 network port and one IP address.
2, only 2M fiber interface: configure a 2M - Ethernet bridge, through the photoelectric conversion, providing Ethernet interface.
3. Power distribution rooms without Ethernet and fiber: You can choose the following two ways:
1) The nearest leased telecom operator's Ethernet or fiber optic: suitable for the convenience of the operator's intra-cell network connection.
2) Rent a telecom operator's wireless network: Using GPRS or CDMA, you can use the public network or form an APN private network. This plan needs to pay the operator the network usage fee.
3) Deploy a dedicated microwave communication network: In the power distribution room and the regional center, for example, the nearby substation, configure and arrange microwave devices respectively, and transfer them through the converted Ethernet. This solution has great problems in the transmission distance and reliability in cities, and is mainly used in open areas where there is no high building blockage.
In short, through various technical means, Ethernet is the most optimized and lowest cost transmission method.
The overall function of the system is that in the unattended substation image monitoring and security alarm system, the front-end video and audio signals are compressed into IP data packets through the network video server encoding, and the front-end data signals enter the IP network via the network video server network interface. Therefore, the The monitoring center's system servers, attendant workstations, substation local workstations, and any computer terminal on the network can achieve stepless monitoring of the front-end substations through permission control.
1 Real-time image monitoring includes any monitoring terminal in the monitoring center or power MIS network. Through the network video centralized monitoring system management software or the standard IE browser, all image information of the same substation or multiple substations can be monitored in real time. Multiple channels can be displayed on the same screen. (1, 4, 9, 16) real-time image information. Multiple monitoring terminals can monitor image information at a certain point at the same time. The communication methods are IP unicast and multicast.
The monitoring terminal can monitor the multi-channel real-time image information in a round-robin manner and perform image inspection on all monitoring points in the system within the set interval time. The objects participating in the round-robin inspection can be arbitrarily set, including the images of different substations and the same substation. Different cameras, different preset positions of the same camera, etc., can be set for the polling interval.
2 Voice Functions Between local substations and monitoring center attendant workstations, different monitoring terminal users can implement IP-based voice functions, including: real-time voice half-duplex intercom and voice broadcast functions; using IP voice system For a single call, the called party should respond automatically (referring to the system IP response); perform online job exchanges between different users; send work instructions to low-level users; record the scene at the substation side; and remotely maintain the operator's walkie-talkie in the station. speak.
3 Local and remote control of local substations or any remote monitoring terminal, through the Xiangshi network video monitoring system management software or standard IE browser, can control the substation's pan and tilt, lens and other monitoring equipment, arm/disarm settings, substation site lighting Such as equipment control; can also be in accordance with the linkage strategy set in advance software, a substation alarm trigger a series of control procedures.
Automatic reset function, for the controlled front-end equipment, including PTZ, lens, light, etc., according to prior software settings, after the control can be completed after a set period of time to restore the default state.
At the level of control rights, the system server of the monitoring center can set the level of control of different terminal users. High-priority users can unconditionally obtain the control of low-priority users according to the principle of hierarchical priority, and users of the same level can gain control according to the principle of time priority. right.
4 Recording Function The system's default recording rate is 25 frames per second (PAL), but the user can adjust the recording rate to reduce the load on the hard disk and the system. Each video data recording parameter can be set independently without any interference between each other. The disk capacity of video recording can be set and has automatic coverage function. After the set disk capacity is used up by video data, the new video data will gradually cover the oldest video data to recycle disk space. System recording functions include real-time recording, scheduled recording, motion detection pre-triggered recording and alarm pre-triggered recording.
5 Alarm function The type of alarm in the remote substation image monitoring system of the power substation can be divided into two types: peripheral alarm and internal alarm.
Peripheral alarms include substation accident alarms, changes in power equipment status and fault alarms, fire alarms, anti-theft alarms, fire alarms, flooding alarms for power equipment, access control alarms, illegal entry and screen change alarms, etc., mainly through alarm processing units or substations. The automation system arrives at the monitoring center. After an alarm event occurs, the monitoring terminal will give a sound and light prompt and display the alarm location and type. The monitoring center will manually or according to the predetermined program issue control instructions, link the image monitoring of the corresponding alarm target, specify the corresponding camera to record, start the scene lighting, siren and so on. After the related equipment is started, it shall be turned off automatically within the set time, and the on-site lighting may not be turned on during the day (the time period can be set).
Internal alarms mainly include front-end video signal interruption alarms and system server disk capacity space alarms. Once the loss of video signal is lost due to the line fault between the camera and the network video server, network failure, and equipment failure, or the video storage space of the system server exceeds the predetermined value, the system can immediately detect and make audible and visual alarms. Log records and other corresponding actions.
The alarm level can be set as a serious alarm and a general alarm as required. Alarm signal, alarm content can be automatically displayed on any screen. All alarm information is automatically saved, and the corresponding image recording can be retrieved and retrieved by the alarm information, and can be printed out when necessary. When multiple alarms occur, the storage is displayed according to the principle of alarm level priority and time priority.
6 System Management Functions The system management functions of the electric substation remote image monitoring system include historical image management, safety management, and log management.
• Realize remote monitoring and monitoring of scenarios in the substation area;
• Monitor the operational status of important operating equipment such as transformers and circuit breakers in substations;
• Monitor the appearance of high-voltage equipment such as CT, PT, cable joints and insulators in substations;
• Monitor the disconnected state of disconnector and grounding switch in substations;
• Monitor the appearance of other oil-filled and flammable equipment in the substation;
• Monitor the main indoor environment (main control room, high voltage room, capacitor room, independent communication room, etc.) in the substation;
• Realize the fire prevention and anti-theft automatic monitoring of the key parts of the substation station, which can perform peripheral alarm linkage.
Networking Description At present, there are usually the following transmission methods for substation image surveillance and security alarm systems:
1. Existing Ethernet substations: Each substation host requires one RJ45 network port and one IP address.
2, only 2M fiber interface: configure a 2M - Ethernet bridge, through the photoelectric conversion, providing Ethernet interface.
3. Power distribution rooms without Ethernet and fiber: You can choose the following two ways:
1) The nearest leased telecom operator's Ethernet or fiber optic: suitable for the convenience of the operator's intra-cell network connection.
2) Rent a telecom operator's wireless network: Using GPRS or CDMA, you can use the public network or form an APN private network. This plan needs to pay the operator the network usage fee.
3) Deploy a dedicated microwave communication network: In the power distribution room and the regional center, for example, the nearby substation, configure and arrange microwave devices respectively, and transfer them through the converted Ethernet. This solution has great problems in the transmission distance and reliability in cities, and is mainly used in open areas where there is no high building blockage.
In short, through various technical means, Ethernet is the most optimized and lowest cost transmission method.
The overall function of the system is that in the unattended substation image monitoring and security alarm system, the front-end video and audio signals are compressed into IP data packets through the network video server encoding, and the front-end data signals enter the IP network via the network video server network interface. Therefore, the The monitoring center's system servers, attendant workstations, substation local workstations, and any computer terminal on the network can achieve stepless monitoring of the front-end substations through permission control.
1 Real-time image monitoring includes any monitoring terminal in the monitoring center or power MIS network. Through the network video centralized monitoring system management software or the standard IE browser, all image information of the same substation or multiple substations can be monitored in real time. Multiple channels can be displayed on the same screen. (1, 4, 9, 16) real-time image information. Multiple monitoring terminals can monitor image information at a certain point at the same time. The communication methods are IP unicast and multicast.
The monitoring terminal can monitor the multi-channel real-time image information in a round-robin manner and perform image inspection on all monitoring points in the system within the set interval time. The objects participating in the round-robin inspection can be arbitrarily set, including the images of different substations and the same substation. Different cameras, different preset positions of the same camera, etc., can be set for the polling interval.
2 Voice Functions Between local substations and monitoring center attendant workstations, different monitoring terminal users can implement IP-based voice functions, including: real-time voice half-duplex intercom and voice broadcast functions; using IP voice system For a single call, the called party should respond automatically (referring to the system IP response); perform online job exchanges between different users; send work instructions to low-level users; record the scene at the substation side; and remotely maintain the operator's walkie-talkie in the station. speak.
3 Local and remote control of local substations or any remote monitoring terminal, through the Xiangshi network video monitoring system management software or standard IE browser, can control the substation's pan and tilt, lens and other monitoring equipment, arm/disarm settings, substation site lighting Such as equipment control; can also be in accordance with the linkage strategy set in advance software, a substation alarm trigger a series of control procedures.
Automatic reset function, for the controlled front-end equipment, including PTZ, lens, light, etc., according to prior software settings, after the control can be completed after a set period of time to restore the default state.
At the level of control rights, the system server of the monitoring center can set the level of control of different terminal users. High-priority users can unconditionally obtain the control of low-priority users according to the principle of hierarchical priority, and users of the same level can gain control according to the principle of time priority. right.
4 Recording Function The system's default recording rate is 25 frames per second (PAL), but the user can adjust the recording rate to reduce the load on the hard disk and the system. Each video data recording parameter can be set independently without any interference between each other. The disk capacity of video recording can be set and has automatic coverage function. After the set disk capacity is used up by video data, the new video data will gradually cover the oldest video data to recycle disk space. System recording functions include real-time recording, scheduled recording, motion detection pre-triggered recording and alarm pre-triggered recording.
5 Alarm function The type of alarm in the remote substation image monitoring system of the power substation can be divided into two types: peripheral alarm and internal alarm.
Peripheral alarms include substation accident alarms, changes in power equipment status and fault alarms, fire alarms, anti-theft alarms, fire alarms, flooding alarms for power equipment, access control alarms, illegal entry and screen change alarms, etc., mainly through alarm processing units or substations. The automation system arrives at the monitoring center. After an alarm event occurs, the monitoring terminal will give a sound and light prompt and display the alarm location and type. The monitoring center will manually or according to the predetermined program issue control instructions, link the image monitoring of the corresponding alarm target, specify the corresponding camera to record, start the scene lighting, siren and so on. After the related equipment is started, it shall be turned off automatically within the set time, and the on-site lighting may not be turned on during the day (the time period can be set).
Internal alarms mainly include front-end video signal interruption alarms and system server disk capacity space alarms. Once the loss of video signal is lost due to the line fault between the camera and the network video server, network failure, and equipment failure, or the video storage space of the system server exceeds the predetermined value, the system can immediately detect and make audible and visual alarms. Log records and other corresponding actions.
The alarm level can be set as a serious alarm and a general alarm as required. Alarm signal, alarm content can be automatically displayed on any screen. All alarm information is automatically saved, and the corresponding image recording can be retrieved and retrieved by the alarm information, and can be printed out when necessary. When multiple alarms occur, the storage is displayed according to the principle of alarm level priority and time priority.
6 System Management Functions The system management functions of the electric substation remote image monitoring system include historical image management, safety management, and log management.
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