Transformer Station Surveillance Solution

Description: Transformer station surveillance must be done well on insulation matters. Besides, alarm linkage, fire-prevention and anti-static function are also important. Our solution for transformer station provides functions of alarm linkage, central management, electronic map and many other advantages. And our products mostly meet industrial standards.
Keywords: transformer station surveillance, transformer station surveillance system, electric power system surveillance
Transformer Station Surveillance Solution
Keywords: monitoring system, monitoring solution, electric power surveillance, transformer station surveillance, monitoring project, video monitoring

1. Brief introduction

As social economy and science develops, especially the development of computer network, people have higher and higher demand for security protection. In order to fight various economic crimes, protect nation and people’s lives & property and protect normal operation of all industries and departments, it has been a developing direction to adopt high-tech ways to prevent various crimes in security field.
Besides, with the wide spread of unmanned transformer stations, it is available in control center by existed power telecom network to realize real-time surveillance and remote informing for faults & emergencies, which enhances safety and reliability of station operation & maintenance, as well as gradually realizes power grid’s visual surveillance & dispatch so as to be more stable or reliable.
Transformer station remote monitoring system can transmit each monitoring point’s signals to control center, such as main control device operation, real-time picture of generator transformer, circuit breaker and isolation switch and alarm information of flame-proof or burglar-prevention. Mangers can view and analyze the remote situation real-timely, which enhances working efficiency and relieves heavy works of manual maintenance of spot. By using multimedia computer, network and remote monitoring skill to mange “remotely and visually” promotes the further improvement of manufacture & management level.

2. Designment principle

• Practicability and reliability
• Advancement, maturity and expandability
• Openness and standardization
• Economy
• Maintainability and manageability
• Network inheritance
• Flexibility

3. System composition

3.1 Whole system composition
This system includes front-end part, control center and net client. Details
3.1.1 Each transformer station should match with a set of front-end devices, including picture, alarm, fire signal capturing. All signals are transmitted to EM-DVS for storing. Meantime DVS transmits signal to local control center via specific channel.
3.1.2 Each residential area sets up a control center, total 3 residential area control centers of area A, area B and area C. All area control centers must centrally manage their included front-end devices (signal). Besides, according to requirement, control center can give authority to clients for their remote viewing, the viewed resources retransmitted from video site.
3.1.3 Net client must login control center sever, inputting user name and passwords, then begins remote monitoring.
3.2 Whole system diagram

3.3 Area A
There are total 11 transformer stations:
3.3.1 Front-end equipments: including picture capturing part, alarm capturing device and DVS (total 11 transformer stations)

• Picture capturing part: 9 high speed domes, 40 outdoor middle speed domes, 61 indoor PTZ camera (or small dome) and 4 outdoor PTZ domes
• Alarm signal capturing devices: 26 smoke detectors (6 units in cables), 12 pairs of Photoelectric Beam Detectors
• DVS: total 11 transformer stations in area A, total 12 DVSs needed

3.3.2 Control center device of residential area

• Central server: used to centrally manage all front-end devices, users, user authorities, configuration data, video site, map / alarm server, operation status tests and log record.
• Video site: transmit video resources for net client, meantime, offer remote picture viewing, picture division, picture tour, PTZ control and networking storage.
• Map / alarm server (TV-wall server): define all stations pictures on map with coordinate, easy to fast search; centrally receive various alarm signals, multilevel alarm map display, auto upload alarm picture, save alarm picture; according to settings, restore digital signal to analog mode, connect to TV-wall, used for analog monitoring.
• TV-wall: using “map / alarm management sever” decoding function can restore digital signal to 1~24 channels analog signal; besides, using digital matrix function can switch TV-wall pictures. Temporarily set as 3×4 TV-wall, total 12 units of 21” color monitor.

3.3.3 Small area network monitoring client devices:
There are 2 monitoring clients of 2 control servers each, details below:

• WEB client server: by using Web browser to realize real-time audio&visual monitoring, PTZ control, data search, search and playback functions.
• Map / alarm management server (TV-wall server): define all monitoring points on map with coordinate, easy to fast search; centrally receive various alarm signals, multilevel alarm map display, auto upload alarm picture, save alarm picture; according to settings, restore digital signal to analog mode, connect to TV-wall, used for analog monitoring.

3.4 System diagram

3.4 Area B
There are 7 transformer stations in area B:
3.4.1 Front-end devices: include picture capturing device, alarm capturing device and DVS (total 7 transformer stations)

• Picture capturing part: 4 high speed domes, 23 outdoor middle speed domes, 38 indoor PTZ camera (or small dome) and 3 outdoor PTZ domes
• Alarm signal capturing devices: 16 smoke detectors, 14 pairs of photoelectric beam detectors
• DVS: there are 7 transformer stations, total 7 DVSs needed

3.4.2 Small area control center devices

• Central server: used to centrally manage all front-end devices, users, user authorities, configuration data, video site, map / alarm server, operation status tests and log record.
• Video site: transmit video resources for net client, meantime, offer remote picture viewing, picture division, picture tour, PTZ control and networking storage.
• Map / alarm server (TV-wall server): define all stations pictures on map with coordinate, easy to fast search; centrally receive various alarm signals, multilevel alarm map display, auto upload alarm picture, save alarm picture; according to settings, restore digital signal to analog mode, connect to TV-wall, used for analog monitoring.
• TV-wall: using “map / alarm management sever” decoding function can restore digital signal to 1~24 channels analog signal; besides, using digital matrix function can switch TV-wall pictures. Temporarily set as 3×4 TV-wall, total 12 units of 21” color monitor.

3.4.3 Small area network monitoring client devices:
There are 2 monitoring clients of 2 control servers each, details below:

• WEB client server: by using Web browser to realize real-time audio&visual monitoring, PTZ control, data search, search and playback functions.
• Map / alarm management server (TV-wall server): define all monitoring points on map with coordinate, easy to fast search; centrally receive various alarm signals, multilevel alarm map display, auto upload alarm picture, save alarm picture; according to settings, restore digital signal to analog mode, connect to TV-wall, used for analog monitoring.

3.4.4 System diagram (the same as area A): skipped
3.5 Area C
There are 10 transformer stations in area C:
3.5.1 Front-end devices: include picture capturing part, alarm signal capturing device and DVS (total 10 transformer stations).
Picture capturing part:

• Picture capturing part: 3 high speed domes, 28 outdoor middle speed domes, 52 indoor PTZ camera (or small dome) and .23 outdoor PTZ domes
• Alarm signal capturing devices: 6 smoke detectors, 6 pairs of photoelectric beam detectors
• DVS: there are 7 transformer stations, total 10 DVSs needed

3.5.2 Small area control center devices

• Central server: used to centrally manage all front-end devices, users, user authorities, configuration data, video site, map / alarm server, operation status tests and log record.
• Video site: transmit video resources for net client, meantime, offer remote picture viewing, picture division, picture tour, PTZ control and networking storage.
• Map / alarm server (TV-wall server): define all stations pictures on map with coordinate, easy to fast search; centrally receive various alarm signals, multilevel alarm map display, auto upload alarm picture, save alarm picture; according to settings, restore digital signal to analog mode, connect to TV-wall, used for analog monitoring.
• TV-wall: using “map / alarm management sever” decoding function can restore digital signal to 1~24 channels analog signal; besides, using digital matrix function can switch TV-wall pictures. Temporarily set as 3×4 TV-wall, total 12 units of 21” color monitor.

3.5.3 Small area network monitoring client devices:
There are 2 monitoring clients of 2 control servers each, details below:

• WEB client server: by using Web browser to realize real-time audio&visual monitoring, PTZ control, data search, search and playback functions.
• Map / alarm management server (TV-wall server): define all monitoring points on map with coordinate, easy to fast search; centrally receive various alarm signals, multilevel alarm map display, auto upload alarm picture, save alarm picture; restore digital signal to analog mode, connect to TV-wall, used for analog monitoring. Temporarily set as 3×4 TV-wall, total 12 units of 21” color monitor.

3.5.4 System diagram (the same as area A): skipped
3.6 Configuration statistics of all transformer stations & points: skipped

4. System functions

4.1 Functions of control center of small area:

• Flexible centralized storage & scattered storage

IDRS NVMS provides convenient & flexible storage solutions. No matter where cameras install, it is operable to centrally store video by one or more control centers via network. When system is oversize, centralized storage causing over-heaviness of network control center management and device management, it is suitable to integrate scattered front-ends storage and remote search & network storage; i.e. heavy stored tasks are finished at scattered local servers, and command center can remotely call & view video data, even make second storage in demanded, thus it not only affords storage task, but also release center’s burden greatly.

• Centralized management

System via central server can centrally manage all system’s hardware devices and users, which adds/modifies main control devices of front-end, sets/changes device parameters, defines/changes inter-devices relations, and adds/deletes user, sets/changes user authority.
The only operation required to manager is that system info is registered on server, which will take effect in system with simplified operations, greatly enhancing working efficiency.

• Flexible digital matrix functions

IDRS NVMS matches hardware decoder and digital matrix function both of which support TV-wall receiving 1~24 channels signal, and also provide manual switch, auto switch or grouping switch, not only meeting demand for viewing on TV-wall but also decreasing construction cost.

• Strong functions of map & alarm management

IDRS NVMS provides strong function of electronic map. It can one by one locate all monitoring points on map, using mouse to call out any point’s picture.
User can edit map with multilevel by self. Alarm happens, alarm point will be displayed on top level map automatically. Then press coordinate point and quickly call out inner arm diagram of this point, flashing specific alarm position which makes information more visible and clearer.

• Support dynamic IP, compatible with various networking environments.

IDRS NVMS supports LAN, WAN, ADSL, CDMA, 1X, E1 as well as other network medias.
As to ADSL suchlike dynamic IP modes, it is feasible with existed DNS software to repair network monitoring breaking down caused by IP changing, so as to be likely to build up economical network monitoring system.

• Free deployment

IDRS NVMS, with network, is not limited by distance, able to install anywhere, easy to set up network of inter-district or large scope, e.g. building state-province-city-county network with multilevel structure.

• Convenient IE browsing function

In order to provide more convenient visit to small clients, IDRS NVMS offers Web service platform. Users need not to install any surveillance software and simply realize real-time monitoring remotely with IE browser.

• Support multi-device mixed networking

Based on IDRS NVMS platform, it can simultaneously manage PC based DVR, EMDVR, DVS and suchlike front-end devices. Support mixed network among these devices according to user’s demand.
IDRS NVMS is compatible with current popular video processors, e.g. HIKVISION PC based DVR, EM server and DVS. Thus it can resolve problems of system upgrade, expansion and compatibility.

• Unlimited expansion

Due to IDRS NVMS adopting opened multilevel servers framework and supporting multilevel control center, so system can be expanded freely within the permitted range of bandwidth.

• Multilevel severs framework, easy to graded management

As for the big monitoring system, only one control center can not be enough for management. IDRS NVMS with open module structure can set multiple second or third level control center to realize graded monitoring and management based on multi-server and their corresponding relations.

• Ensure information security

IDRS NVMS adopts highly intensive encryption algorithm which ensures security of system & data. Video data adopts specified data format and playing tool, ensuring security & stability of data and system.

• Multi-channel simultaneous play

System supports multi-channel (1/4/9/16 ch) sync/async playback function, supporting ×1~×4 fast or slow play, so as to enhance search efficiency.

• Time bar search

The search for video file playback provides visualized time bar and colored part refers to video existence; different color parts refers to different recoding modes, more convenient for search.

• Remote maintenance and upgrade

Central server can view operation status of devices at anytime, as well as set & modify device’s parameters, even upgrade system, which truly realizes unmanned operation. Thus it not only enhances maintenance efficiency of system but also saves manpower and time.

• Offline auto reconnecting

When front-end device connection breaks down, control center still scans on network and keeps trying to connect to the frond-end; as soon as front-end repairs connection, control center will instantly connect to it automatically.

• Reduce repeated occupation of network resource

IDRS NVMS uses video retransmitting function of video site to remotely visit front-end picture on each client. By this way, when front-end devices unload video, they will do not occupy bandwidth, which ensures stability of upload, and front-end transmission speed and picture quality are affected by client amount.

• More proper for narrow bandwidth transmission

System can define priority between picture qualities and upload speed, or separately define frame amount of each channel picture. Thus system with bandwidth inadequacy or instability realizes remote visit.

• Friendly HMI (human machine interface), simple operation

In IDRS NVMS, all operation interfaces follow IDRS golden version interface style, i.e. stress both functionality and humanity designment. Interface adopts many viewing patterns to view & search points and cameras, such as resource list (tree-like index), electronic map and matrix switching.

• Complete management of multilevel user authority

All users and their settings & modifications are assembled on central server, user amount not limit and user’s authority defined freely. Wherever and by whichever computer, as long as login on central server, user can get authorized resource list, visiting the authorized devices. System manger can randomly change users and their authorities, which ensures management security and real-timeliness.

• Bidirectional voice talk

In IDRS NVMS system, any two control centers can directly talk each other, as well as for any control center-to-client or any two clients, easy to communicate among different control terminals.

• Emergency measure

When the video site, used as picture retransmission server, breaks down, another spared video site will automatically take over the work. If there is no spared device, system will auto change path, lead users to directly visit front-end main control devices, ensuring continuous surveillance. As soon as devices repair finishes, system automatically switch to original path.

• Stable & reliable operation

IDRS NVMS system works as a big achievable surveillance management system, its wonderfulness and reliability having been verified in many industries in many regions.

• Wide applications

Due to convenient operation, full functions, centralized multilevel management, as well as reasonable designment in network frame, IDRS NVMS shows incomparable advantages, therefore it will be prosperous in the market.
4.2 Central server functions
As the system core, central server includes below functions:
4.2.1 Remotely manage and maintain front-end devices (PC-DVR, EM-DVR, DVS)

• Add (device registry) and eliminate front-end devices
• Configure front-end devices parameters, including device name, IP address, username & passwords, camera name, transmission picture quality & speed, clock & character addition and PTZ control protocol, high speed dome presets, PPPOE dialup setting, DNS analysis and sensor.
• Regularly automatic scan and display front-end device status

4.2.2 Manage control center equipments such as video site, electronic map/matrix/alarm management server

• According to total task amount, assign each section the monitoring task and monitoring measure
• Add or delete video site, electronic map/digital matrix/alarm management server
• Arrange the relations between video site and front-end main control equipments.
• Define whether video site real-timely displays picture of connected camera
• Set video site’s recorder (continuous record, alarm record) and record plan

4.2.3 Centralized management of user & authority

• Add or delete user
• Set and modify user authority: including visiting authority, central server management authority, PTZ control authority, add & delete user’s authority, assign monitoring channel

4.2.4 Display working status of all devices

• Display list of all front-end controllers and list of video sites
• Display working status of front-end controllers and video sites (ON / OFF), easy to maintain

4.3 Functions of video site

• Worked with control center to central & remote surveillance, network storage and picture transmission
• Each video site affords 1~32 channels pictures and the stored pictures are assigned by central server
• In charge of connecting to front-end controllers, providing remote picture displaying, PTZ control, search and record functions
• Work as video resource of net client, in charge of audio & video transmission

4.4 Electronic map/alarm management/digital matrix function
4.4.1 Stepped two-level map function

• First level map displays points positions in specific region (double click mouse, enter second level map)
• Second level map displays detail arm situation (specified position of camera and detector)
• User can design or change map (vector map definable)

4.4.2 Network digital matrix and TV-wall switch

• Add IDRS matched hardware decoder on map, able to restore 1~24 channels signal and output them to TV-wall
• Using software can form virtual array mode of practical TV-wall
• System can switch TV-wall manually, automatically and grouped.

4.4.3 Remote receiving & managing alarm

• When one of the front-end points takes alarm, it will turn flashed red in first level map, mean time system report a warning
• Click alarmed point icon, pop up second level map (specific arm structure), then specific alarm device and linked camera become red, indicting alarmed position
• Alarmed pictures automatically upload and display; if many channels pictures upload together, they will circularly display in 4 windows.
• Alarm picture can be switched to TV-wall automatically

4.4.4 Log management functions

• Software supports log management functions: recording alarm log and operation log, additionally exporting them

4.4.5 Convenient picture calling and PTZ control

• User can double-click any camera in map to view its picture
• Double-click icon to enlarge picture
• Can control pan/tilt and lens

4.5 WEB client functions (B/S mode)

• The authorized users can browse remote picture whenever and wherever with IE, not needing software installation
• With IE, user can operate on 1/4/9/16 channels real-time surveillance, control PTZ, manual record and remote playback

4.6 Functions of control end of video site
4.6.1 Real-time video surveillance

• Support simultaneous view & listen of 16 channels PAL/NTSC video signal and 16 channels audio signal
• Fast switch of display modes (1/4/9/16)
• Local monitor display and local VGA display

4.6.2 Control functions

• Can control camera lens zoom, pan/tilt rotation of horizontal and vertical
• Control light ON/OFF
• Support high speed camera speed-change and tilt rotation; support preset function

4.6.3 Storage & playback function

• Have many recording modes, can be single or combined used
• Fast search by position, time and alarm
• Support network disk with NSF protocol
• HDD files can be circularly recorded or non-circularly recorded

4.6.4 Alarm functions

• Support local alarm (abnormal, motion detection) linkage
• Alarm time schedule (arm, unarm), alarm linkage type, specified preset of alarmed, sound indicating to alarm
• Support remote networking alarm, instant transmitting signal to main control center.

5. System requirement on skill

• Equipment MTBF not less than 20000 hours
• Computer MTBF not less than 20000 hours
• Monitor according with U authentication and FCC limitation of level A
• Camera according with UL1409 security standard and FCC radiation standard of level A
• Detector according with UL authentication and passed MPS’s test
• Composite video signal amplitude: 1vp-p±3dB
• Color horizontal resolution: ＞380TVL
• SN ratio: ≥37dB
• Grayscale: ≥grade 8

6. Control center designment and demand

• Security control system should be set at an independent room, forbidden to unrelated people and controlled by technical staff, which ensures solving problems happened
• Monitor and record video signal
• Centrally supply power to central control devices and their matched facilities
• There should be intrusion preventing devices, self-defense devices and internal commercial system, moreover there should be alarm facilities and measures of fire-proof or waterproof
• Lighting & air-conditioner and equipment are powered by switch cabinet which supplied independent DC power for system.
• Control room should set up anti-static raised floor, pave specifies grounding line (insolated copper-core cable), room keeping not less than 5 meters away from GND, GND resistance being not more than 4 Ω.
• Reserve some ports for extending capacity in later

7. Alarm system instruction

Burglar alarm system plays important role in protection of whole transformer station.
According to demand, there is an infrared dual-technology detector; in 35kV, 10kV install photoelectric beam detector; in protection room, main control room, equipment room, cable room install smoke detector.
When arm status opens, as soon as whichever area is destroyed, system will take alarm.
Alarm happens, system will at once run local acousto-optic alarm to warn or overawe intruders. Meanwhile system activates local DVS to begin record or links to light openness, so as to supply sufficient power for camera capturing picture. High speed dome will auto call alarmed preset, with fastest speed turning to alarmed position and capturing picture.
Mean time, DVS can upload alarm signal to main control center. With “Map/Alarm management severs” function, control center will display alarmed position and multilevel map, besides, alarm signal auto uploads and alarmed record auto starts.

8. Selection of hardware devices

8.1 Principle of device selection
In order to satisfy demands of electric security system and of device fineness, quality reliance as well as price properness; we should thoroughly compare the cost performance and repair rate among the main popular CCTV monitoring products. Then we consider the various factors in security protection project requirement, composing a best system.
8.2 Camera’s selection

• Intelligent high speed dome camera (skipped)
• Outdoor middle speed dome camera (skipped)
• Rotatable camera with preset (skipped)
• Outdoor PTZ camera (skipped)

8.3 DVS (skipped)
8.4 Detector

• DT7435 series pet-prevention dual-technology detector (skipped)
• Type-1412 smoke detector (skipped)

8.5 Server device (skipped)
8.6 Pocket computer (skipped)

9. Equipment inventory (skipped)