CN101951025B - Energy management system of offshore grid - Google Patents

Energy management system of offshore grid Download PDF

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Publication number
CN101951025B
CN101951025B CN 201010257872 CN201010257872A CN101951025B CN 101951025 B CN101951025 B CN 101951025B CN 201010257872 CN201010257872 CN 201010257872 CN 201010257872 A CN201010257872 A CN 201010257872A CN 101951025 B CN101951025 B CN 101951025B
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control
station
power
network
data
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CN101951025A (en
Inventor
胡鹏
谢玉洪
柯吕雄
俞进
李大全
唐广荣
王建丰
卜华荣
刘祖仁
温伟明
叶冠群
郝富强
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SHENZHEN XINGJIAN AUTOMATION SYSTEM CO Ltd
China National Offshore Oil Corp CNOOC
China National Offshore Oil Corp Zhanjiang Branch
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SHENZHEN XINGJIAN AUTOMATION SYSTEM CO Ltd
China National Offshore Oil Corp CNOOC
China National Offshore Oil Corp Zhanjiang Branch
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Abstract

The invention discloses an energy management system of offshore grid, comprising an information layer, a station control layer and a spacing layer, wherein the information layer, the station control layer and the spacing layer are respectively arranged in a central control station and the platform workstations of a plurality of offshore platform power stations distributed in a sea area; the station control layer is connected and communicated with the information layer and the spacing layer through a communication network; the system carries out the monitoring and control of each generator set, the monitoring and control of each breaker, the distribution, adjustment and control of the reactive power and reactive power contribution, the control of the preferential trip, the management and control of the loop start of a motor, and the cooperative control of the black start of the grid and a platform shutdown system through the information layer, the station control layer and the spacing layer. The invention has the characteristics of high channel speed and degree of automation, highly integrated function, safe and reliable work, easy maintenance, and flexible configuration.

Description

The EMS of offshore power grid
[technical field]
The present invention relates to the electric power system of offshore oil platform, particularly relate to the EMS that a kind of electrical network that a plurality of offshore platforms power station that is distributed in the marine site is consisted of carries out the offshore power grid of real time monitoring, control and management.
[background technology]
At present, the development and utilization to marine resources is all constantly strengthened in countries in the world, particularly to the oil in coastal waters, the development and utilization of natural gas resource.Supply of electric power then is the important step during oil, air to open are sent out.Because marine each oil gas field is wide aparts all mostly, on the mining type, mostly adopt at present a central platform to build a power station both at home and abroad, centered by the mode of platform and the power supply of each wellhead platform.There is following problem in this supply power mode:
The first since conventional offshore oil and gas field exploitation pattern basically to be that each oil gas field central platform is built a power station independently-powered, this pattern is so that each oil gas field power supply is single, as do not leave the stand-by generator group, in case the unit fault will cause the platform dead electricity, power supply reliability is not enough; All reserve stand-by generator group with the suitable capacity of its load such as each platform, electric generation investment will greatly improve, and electrical main connecting wire and power distribution equipment be corresponding complexity also, and power supply takes up space and be multiplied, and the space of oil gas field platform then is limited and valuable.
Two to be units break down easily along with load increases for it, harmonic wave is larger, and the quality of power supply is relatively poor, and single Oilfield Electric station marginal capacity is inadequate, under the startup of the powerful devices such as water injection pump, compressor, output pump is impacted, cause easily whole electric power system big ups and downs, and can cause field produces to close down.
It three is that each power station must possess certain reserve capacity, has caused the repetition of resource distribution.
Exist in addition resource distribution unreasonable, underutilization of resources, the problem such as operating cost and maintenance cost are high, and energy resource consumption is large.
On the other hand, land electrical network is by the control of huge and complicated control system realization to electrical network, and these systems are also inapplicable for the isolated minor scale power net of Oilfield Group, and not only investment is large, also need be equipped with a large amount of operation maintenance personnel.The Oilfield Group electrical network is the auxiliary system of Petroleum Production, can not look like land electrical network configuration schedules mechanism and personnel.The work that the land electrical networks such as the monitoring of each platform power supply equipment, the management of load and balance can be finished by scheduling/operator on duty must be carried out by supermatic system at this.Different for offshore oil platform electrical network and land electrical network, the oil platform particularity of producing particularly, the offshore oilfield group electrical network must than land grid automation degree require higher, real-time is stronger, function is more highly integrated, channel rate is higher, the communication real-time is Millisecond.Therefore traditional factory station and dispatching data network, the designated lane between the main station system can not satisfy transmission request message, and require to possess more at a high speed reliable passage.
[summary of the invention]
The present invention is intended to address the above problem, and a kind of channel rate and automaticity height are provided, and highly-integrated functions is safe and reliable, is easy to safeguard the EMS of the offshore power grid of flexible configuration.
For achieving the above object, the invention provides a kind of EMS of offshore power grid, this system comprises Information Level, station level and wall, described Information Level, station level and wall are arranged at respectively central control station and are distributed in the working platform station in a plurality of offshore platforms power station in the marine site, described station level is connected with Information Level and wall by communication network and communicates by letter, and this system passes through Information Level, station level and wall are implemented the monitoring and controlling to each generating set, the monitoring and controlling of each circuit breaker, reactive power in standing, control is regulated in the distribution that reactive power is exerted oneself, the preferential control of threading off, motor circuit starts management control, the black startup of electrical network reaches the control that cooperates with the platform turning off system.
Communication network is two web frames, and every layer of Information Level and station level are established two 100M Ethernets, and the network of Information Level and station level is separate, and wall is connected with described communication network by fieldbus.
Information Level comprises at least one station server that is arranged on central control station and is separately positioned on central control station and the multiple host at a plurality of working platforms station and the corresponding network equipment that the main frame at central control station and each working platform station can be mutually for subsequent use through authorizing; The described network equipment comprises switch, telecommunication cable or optical cable and optical-electrical converter, and described telecommunication cable or optical cable are submarine cable or the optical cable that is laid between each offshore platform power station.
Station level comprises a plurality of field controllers, a plurality of communication server and the corresponding network equipment, and a plurality of field controllers are separately positioned in a plurality of working platforms of the central control station station, and is connected with the Ethernet of Information Level and station level.
Field controller comprises digital protective relay system, intelligent electric kilsyth basalt and electric power meter, UPS device, computer supervisory control system interface and unit control system, wherein, unit control system comprises production control system, safety control system and engine controller; The described communication server is connected with Information Level with station level respectively and communicates by letter; The network equipment comprises switch, telecommunication cable or optical cable and optical-electrical converter, and described telecommunication cable or optical cable are submarine cable or the optical cable that is laid between each offshore platform power station.
The multiple host of central control station is communicated by letter with a plurality of field controllers of station level by described communication network, carry out data acquisition and the security monitoring of electrical network real time data, carry out generation adjustment and the control of network load prediction, electrical network autobalance and automatic generation control, and electrical network is carried out real-time reactive power optimization calculate, automatically distribute the reactive power of each unit to exert oneself, and realize voltage adjustment and control to the control of unit reactive power.
Data acquisition and security monitoring comprise the analogue data that receives field controller; switch/status data; pulse data; the action data of protective device; the reseting data of substation; the gps clock data; cycle and other non-telemechanical class data; communication network and field controller are detected; and to communication network carry out failure rate and the error rate automatically statistics and with a plurality of working platforms station carry out to the time; to validity; limit value; rate of change; drift; the remote measurement of full scale value is processed; gear is processed; single/pair remote signalling is processed; accident is judged; switch failure tripping operation number of times statistics is processed with the remote signalling of reporting to the police; electricity is processed; the processing of listing; data are calculated and statistics; automatic makeup measures; automatically always add calculating; the real time data processing that the topology of autobalance rate is calculated automatically; split to close and carry out the remote control folding and on-load tap-changer of transformer is carried out the remote control control of remote control lift and to generator power; the control of the remote regulating of voltage power-less adjusting device and adjusting; provide file and statistical computation to historical data; dispatcher's operation; show trend curve; the event of carrying out is recollected; sequence of events recording; to data locking and the release that gathers, set up factory's station bus; circuit; transformer measures autobalance and calculates.
Wall comprises to electric pressure being the two buss lines of 35kV; main transformer; the protection of reactor and synthesis observe and control device; described protection and synthesis observe and control device comprise protection relay and multi-tester table; protection and synthesis observe and control device connect with the field controller of station level and communicate by letter; and and unit control system; digital protective relay system communication; realization is to information gathering and the control of each wall electric equipment, and described integrated signal collection and measure and control device gather the 35kV busbar voltage; UPS plant failure or abnormal signal; platform cut-off signals and internal heat alarm signal data.
The multiple host at a plurality of working platforms station is communicated by letter with a plurality of field controllers of station level by described communication network, carry out each generating set monitoring and controlling, circuit breaker monitoring and controlling, stand in preferential dropout control, the motor circuit of reactive power, the reactive power distribution of exerting oneself when regulating control, unit or extra large cable and breaking down start black startup and and the control that cooperates of platform turning off system in management control, electrical network/power station.
The monitoring and controlling of each generating set is active power, reactive power, frequency, power factor, oil temperature, oil pressure, the running status to generating set, the collection of fault-signal, the start-stop sequential control of unit, unit synchronously, the frequency of unit and voltage adjustment; Described circuit breaker monitoring and controlling is the control of divide/closing of the collection of information of reactive power, reactive power, circuit breaker position signal, protection measure and control device to the circuit breaker loop and circuit breaker; The switching of the adjustment control, the adjustment of main transformer on-load voltage regulating switch and the reactor that comprise that the generator reactive power/reactive power in the whole network and the station is exerted oneself is regulated in the distribution that reactive power, reactive power are exerted oneself in the described station; Described preferential dropout be when at least one the generating set at each station or extra large cable because fault preferential dropout out of service; It is automatically to calculate the input of this motor circuit the impact of electrical network to be reached the load from the trend high capacity motor sends the locking enabling signal in the electric network fault situation when each motor circuit puts into operation that described motor circuit starts management; Described electrical network/power station is black to be started is at the electrical network full cut-off or when respectively standing full cut-off, automatic or manual carries out the operation that restores electricity in power station; To automatically shut down electric equipment power supply on the platform by programmable logic controller (PLC) when the emergencies such as fire occurring at platform with cooperating of platform turning off system.
Contribution of the present invention is, it has taken into full account the particularity that offshore oil platform is produced, EMS and unique network configuration of offshore power grid have been proposed to be suitable for, formed the EMS channel organization of the uniqueness of layered distribution type, realized the Highgrade integration of function, a system of the present invention can realize the whole monitoring and controllings to electrical network.Online peace control function information transmission real-time of the present invention is Millisecond, and land network system real-time is a second level, so channel rate is high.The system of the present invention Information Security of can giving security, and can isolate rapidly and the removal system fault, the arbitrary Single Point of Faliure of system all can not affect the normal operation of system, and guarantees that failover procedure is fast and steadily.Because the used equipment of system of the present invention all meets modern international standard and industrial standard, therefore be convenient to safeguard.
[description of drawings]
Fig. 1 is structural representation of the present invention.
Fig. 2 is the embodiments of the invention structural representations.
[embodiment]
The following example is to further explanation of the present invention and explanation, and the present invention is not constituted any limitation.
Consult Fig. 1, the EMS of offshore power grid of the present invention comprises Information Level 10, station level 20 and wall 30, described Information Level 10, station level 20 and wall 30 are arranged at respectively in the working platform station 12 in central control station 11 and a plurality of offshore platforms power station, a plurality of offshore platforms power station then is arranged on a marine site, and for example a plurality of offshore oil in the Oilfield Group of southwest, the Wei in Zhanjiang marine site creep on the platform.The mutual distance in a plurality of offshore platforms power station is 10Km~60Km.Described central control station 11 is preferably disposed on the island or on the bank, in the present embodiment, central control station 11 is arranged in the Platform Power Stations of Weizhou Island, and it bears the central station function of system.Be provided with two enterprise-level servers 111 and two main frames 112 in this central control station 11, being configured to of server 111: two Xeon CPU each 〉=2.66GHz (2M cache), internal memory 〉=4GB DDR internal memory, 2X72G hot-plug hard disk/CD, 10/100/1000M network interface card X2, duplicate supply.It can adopt the brand equipment such as HP, SUN, IBM, and adopts rack to install.Two main frames 112 are the stand-by heat working method each other, and when the working machine fault, the guest machine automatic lifting is working machine, realizes that undisturbed switches.Described working platform station 12 is arranged in each offshore platform power station, only shows two working platform stations among the embodiment shown in Figure 1, respectively is provided with 1~2 main frame 121 in each working platform station.This working platform station 12 gathers for information about by field controller 21, bay device is realized function for monitoring, to generating set, circuit breaker, main transformer on-load voltage regulating switch etc. control and operate, the functions such as warning, SOE, statistical computation, self diagnosis.
As shown in Figure 1 and Figure 2, described Information Level 10 comprises server 111, main frame 112,121 and the network equipment 113, wherein, two-server 111 is arranged in the central control station 11, is respectively equipped with main frame 112 and two main frames 121 in central control station 11 and two working platform stations 12.The main frame at central control station 11 and each working platform station 12 can be mutually for subsequent use through authorizing.The described network equipment 113 comprises the general switch in power station 1131, optical-electrical converter 1132 and communications optical cable 1133; in the present embodiment; described communications optical cable is submarine fiber cable; they are embedded in the seabed between each offshore platform power station; wherein; the marine part of submarine fiber cable is imbedded under the sea bed about 2 meters, adds the cable protection protection of pipe in suspicious reef district.The shoal part is imbedded lower 1 meter of sea bed after protecting with submarine cable protecting pipe.
As shown in Figure 1 and Figure 2, described station level 20 comprises a plurality of field controllers 21, a plurality of communication server 22 and the corresponding network equipment 23, a plurality of field controllers 21 are separately positioned in central control station 11 and a plurality of working platforms station 12, and be connected with the Ethernet of Information Level and station level and communicate by letter, and realize the functions such as the control of online peace, power station automation.More particularly; described field controller 21 comprises digital protective relay system, intelligent electric kilsyth basalt and electric power meter, UPS device, computer supervisory control system interface and unit control system 215; wherein; digital protective relay system is the functional universal relay; it is used for sending the information such as revise that definite value, throwing/surrender are protected to protective relaying device, and accepts the information such as warning, action, definite value of protective relaying device.Intelligent electric kilsyth basalt and electric power meter, UPS device are by commercially available.The computer supervisory control system interface is universal computer interface.Described unit control system 215 comprises production control system 2151, safety control system 2152 and engine controller 2153, and they are existing set control system.The described communication server 22 is connected with Information Level with station level 20 respectively and is connected and communicates by letter.The described network equipment 23 comprises the general switch in power station 231, optical-electrical converter 232 and communications optical cable 233, and described communications optical cable is the submarine fiber cable that is laid between each offshore platform power station.
Again as shown in Figure 1; described wall 30 comprises protection and synthesis observe and control device; it comprises protection relay and multi-tester table; it is two buss lines, the main transformer of 35kV, the protection observing and controlling of reactor that this protection and synthesis observe and control device protection measure and control device is used for electric pressure; all protection measure and control devices are that distributing is installed; to reduce as far as possible space requirement, manage concentratedly by data/address bus.Described integrated signal collection and measure and control device are used for gathering the common signal data that comprise 35kV busbar voltage, UPS plant failure or abnormal signal, platform cut-off signals, internal heat alarm signal and other needs.Above-mentioned protection and synthesis observe and control device can be contained in the same rack with the field controller 21 of station level.This protection and synthesis observe and control device are connected with the field controller 21 of station level and communicate by letter, and communicate by letter with unit control system, digital protective relay system, realize information gathering and control to each wall electric equipment.
Described station level 20 is connected with Information Level 10 and wall 30 by communication network and communicates by letter, such as Fig. 2, described communication network is two web frames, Information Level 10 and station level 20 every layer establish two 100M Ethernets, the network of Information Level and station level is separate, and wall is connected with described communication network by fieldbus.System of the present invention by Information Level 10, station level 20 and wall 30 implement monitoring and controlling, each circuit breaker to each generating set monitoring and controlling, stand in the distribution of exerting oneself of reactive power, reactive power regulate that black startup that control, the preferential control of threading off, motor circuit starts management control, electrical network reaches and the control that cooperates of platform turning off system.Specifically, the main frame 112 of central control station 11 is communicated by letter with a plurality of field controllers 21 of station level 20 by described communication network, carry out data acquisition and security monitoring and the processing of electrical network real time data, carry out generation adjustment and the control of network load prediction, electrical network autobalance and automatic generation control, and electrical network is carried out real-time reactive power optimization calculate, automatically distribute the reactive power of each unit to exert oneself, and realize voltage adjustment and control to the control of unit reactive power.More specifically, data acquisition and security monitoring comprise:
One, with the communicating by letter of each field controller of station level
The main frame 112 of central control station 11 communicates by 100M network channel and each field controller 21, receives analogue data, switch/status data, pulse data, the actuating signal data of protective device, reset signal data, gps clock data, cycle and other non-telemechanical class data of substation.Simultaneously, provide the detection to network service passage and field controller equipment, in order in time find their fault, take appropriate measures.Communication port is carried out real time monitoring and carries out failure rate and the error rate is added up automatically, and with the substation carry out to the time.
Two, data are processed
The main frame 112 of central control station 11 can to grid equipment, comprise that the data of generator, circuit breaker and load are carried out following real-time processing:
Remote measurement is processed, and comprises the processing of validity, limit value, rate of change, drift, full scale value; Remote signalling is processed, and comprises that gear processings, list/pair remote signalling processing, accident are judged, switch failure tripping operation number of times statistics calculates with warning, electricity processings, processings of listing, data and statistics, topological automatic calculating (automatic makeup measurement, automatically always add calculating, the calculating of autobalance rate) and other automatic statistics etc.
Three, control and adjusting
Central control station 11 will be realized remotely-controlled object: the exert oneself control of adjustment (pressure regulation) etc. of the control that the circuit breaker of 35kV/6kV circuit, machine set outlet, each side of main transformer divides/closes, main transformer on-load voltage regulating switch position lifting/lowering, unit active power are exerted oneself adjustment (speed governing) and unit reactive power.Because these remotely-controlled objects can be subjected to the control of central control station 11 and each working platform station 12 and local control switch (button), synchronization is accepted on the spot in order to avoid, the control in local a, distant place, between central control station 11 and each the working platform station 12 corresponding blocking function is set, the remote control of locking central control station 11 when carrying out distant control function at each working platform station 12.Simultaneously the measure and control device on switch cubicle or switch cubicle must dispose the diverter switch of " on the spot/distant place " control, when guaranteeing that circuit breaker carries out Artificial Control in the locality, and the control at shielding distant place central control station 11 and each working platform station 12.System control principle is for Artificial Control is preferential on the spot, when controlling on the spot by diverter switch the romote controlled locking at central control station 11 and each working platform station 12.The remote control at central control station 11 and each working platform station 12 is then preferential with each working platform station 12, by software the automatic control of the remote control at central control station 11 and each working platform station 12 or central control station 11 (unit AGC, AVC control) locking.
Four, historical data
Central control station 11 can be to lower column data: measurement data, electric energy metrical and statistics, all kinds of cumulative data, statistical computation data, status data, event/warning information, event sequence information, emergency review data, trend data and curve, prediction data, planning data, file and statistical computation with the digital value report of quality tab, application software result of calculation section etc.
Central control station 11 is provided with the interface in access history data storehouse, with inquiry and the processing of carrying out historical data.The blanking time that data are preserved is adjustable (be 1 second minimum blanking time), and can be set a plurality of blanking times.
Generation adjustment and control comprise:
Generation adjustment and control comprise that mainly load prediction, electrical network autobalance, automatic generation control, above-mentioned control all realize by corresponding software, satisfy interconnecting ties and frequency bias control (TBC control model), wherein:
The target of one, electrical network being carried out generation adjustment and control is:
Keep system frequency in 50 ± 0.2Hz scope.
Keep the clocking error of system.
Keep the clean exchange power of the submarine fiber cable between each platform within the limits prescribed.
Adjust unit output according to the trend security control requirements, satisfy the Network Security Constraints requirement.
Two, electrical network is carried out generation adjustment and control is:
According to the ruuning situation of each terminal of electrical network, platform unit, formulate various Reactive Power Control schemes, and automatically each unit output is adjusted (speed governing) by this control program, realize keeping the target of system frequency in 50 ± 0.2Hz scope.
Be to guarantee the real-time of control, central control station 11 can by software to each platform carry out to the time, kept the clocking error of system; Simultaneously, each terminal, platform have disposed gps clock, can be separately to the time.System possesses above-mentioned two kinds of time adjustment functions simultaneously.
Load prediction is mainly the appliance load prediction on island, central control station place.
Adjust unit output according to the trend security control requirements, satisfy the Network Security Constraints requirement.
Carrying out above-mentioned adjustment and when control, central control station 11 is sent to the field controller 21 at each working platform station 12 to control command by the 100M network, and field controller communicates commands to unit control system or other measurement and control unit by field network.
Three, voltage adjustment and control
Voltage adjustment and control are the Core Features that realizes line voltage control, and it can be realized by automatism voltage control and static voltage stability analysis software.
The real time information of the main frame 112 of the central control station that central control station 11 bases receive and the main frame 121 at working platform station 12, electrical network is carried out real-time reactive power optimization to be calculated, automatically distribute the reactive power of each unit to exert oneself, and realize the control (pressure regulation) to the unit reactive power.
Carrying out above-mentioned adjustment and when control, central control station 11 is sent to the field controller 21 at each working platform station 12 to control command by the 100M network, and field controller communicates commands to unit control system or other measurement and control unit by field network.
As shown in Figure 1, the multiple host 121 at a plurality of working platforms station 12 communicate by letter with a plurality of field controllers 21 of station level 20 by described communication network, carry out each generating set monitoring and controlling, circuit breaker monitoring and controlling, stand in preferential dropout control, the motor circuit of reactive power, the reactive power distribution of exerting oneself when regulating control, unit or extra large cable and breaking down start manage control, the black startup in electrical network/power station reaches and the control that cooperates of platform turning off system.Above-mentioned every control is specific as follows described:
One, the monitoring and controlling of each generating set
To various informations such as the active power of generating set, reactive power, frequency, power factor, oil temperature, oil pressure, running status, fault-signals, and to the start-stop order of unit, unit synchronously, the frequency (gaining merit) of unit and voltage (idle) etc. adjust control.
Two, circuit breaker monitoring and controlling
To the reactive power in circuit breaker loop, circuit breaker position signal, protection measure and control device gather for information about and circuit breaker divide/close control; adjust control to comprising that the interior generator reactive power/reactive power of the whole network and station is exerted oneself, and adjustment and the reactor switching of main transformer on-load voltage regulating switch are controlled.
Three, the preferential control of threading off
Unit in each offshore platform or two units are because fault is out of service, or submarine fiber cable hinders when out of service for some reason, and the preferential operation of threading off will be implemented in corresponding working platform station 12.The preferential dropout requires to have higher real-time, rear 6 cycle times occur at above-mentioned various failure conditions, be that (fault occurs to the EMS system and preferentially threads off time of I/O relay outlet 120mS, do not comprise the breaker open operation time) in just answer action message, but unload all load removals, and cut off extra large cable circuit breaker between the power station.
Four, motor circuit starts control
When each motor circuit will put into operation, the main frame 121 at working platform station 12 calculated the input of this motor circuit automatically on the impact of electrical network, guaranteed the reliable input in loop.In the electric network fault situation, the locking enabling signal is sent from the load of trend high capacity motor in the working platform station.
Five, the black start-up performance in electrical network/power station
When electrical network full cut-off or each offshore platform power station full cut-off, working platform station host 121 will provide corresponding startup scheme.The site operation personnel is after corresponding scheme is selected at working platform station 12, and system automatically (requirement can be set to manually) carries out the operation that restores electricity in power station.
Six, with the control that cooperates of platform turning off system
Be provided with a cover turning off system in a working platform station 12 therein.This system controls by programmable logic controller (PLC) (PLC), can automatically shut down the electric equipment power supply on the platform at sea when the emergencies such as fire appear in platform.Turning off system will arrange according to the difference of the condition of a disaster 3 grades of shutoffs such as 1,2,3, send 3 grades of cut-off signals such as corresponding 1,2,3 to working platform station host.In addition, the fire of 35KV switch gear room, transformer room and smoke alarm signal also will be got angry by related system, the gas alarm signal is to working platform station host.After working platform station host receives the cut-off signals of turning off system, will automatically shut down immediately corresponding electric equipment.

Claims (7)

1. the EMS of an offshore power grid, it is characterized in that, this system comprises Information Level (10), station level (20) and wall (30), described Information Level (10), station level (20) and wall (30) are arranged at respectively central control station (11) and are distributed in the working platform station (12) in a plurality of offshore platforms power station in the marine site, described station level (20) is connected with Information Level (10) and wall (30) by communication network and communicates by letter, and this system is by Information Level (10), station level (20) and wall (30) are implemented the monitoring and controlling to each generating set, the monitoring and controlling of each circuit breaker, reactive power in standing, control is regulated in the distribution that reactive power is exerted oneself, the preferential control of threading off, motor circuit starts management control, the black startup of electrical network reaches the control that cooperates with the platform turning off system;
Described station level (20) comprises a plurality of field controllers (21), a plurality of communication server (22) and the corresponding network equipment, a plurality of field controllers (21) are separately positioned in central control station (11) and a plurality of working platforms station (12), and are connected with the Ethernet of Information Level and station level;
The multiple host (12) of described central control station (11) is communicated by letter with a plurality of field controllers (21) of station level (20) by described communication network, carry out data acquisition and the security monitoring of electrical network real time data, carry out generation adjustment and the control of network load prediction, electrical network autobalance and automatic generation control, and electrical network is carried out real-time reactive power optimization calculate, automatically distribute the reactive power of each unit to exert oneself, and realize voltage adjustment and control to the control of unit reactive power;
Described data acquisition and security monitoring comprise the analogue data that receives field controller; switch/status data; pulse data; the action data of protective device; the reseting data of substation; the gps clock data; cycle and other non-telemechanical class data; communication network and field controller are detected; and to communication network carry out failure rate and the error rate automatically statistics and with a plurality of working platforms station (12) carry out to the time; to validity; limit value; rate of change; drift; the remote measurement of full scale value is processed; gear is processed; single/pair remote signalling is processed; accident is judged; switch failure tripping operation number of times statistics is processed with the remote signalling of reporting to the police; electricity is processed; the processing of listing; data are calculated and statistics; automatic makeup measures; automatically always add calculating; the real time data processing that the topology of autobalance rate is calculated automatically; split to close and carry out the remote control folding and on-load tap-changer of transformer is carried out the remote control control of remote control lift and to generator power; the control of the remote regulating of voltage power-less adjusting device and adjusting; provide file and statistical computation to historical data; dispatcher's operation; show trend curve; the event of carrying out is recollected; sequence of events recording; to data locking and the release that gathers, set up factory's station bus; circuit; transformer measures autobalance and calculates.
2. such as the EMS of the described offshore power grid of claim l, it is characterized in that, described communication network is two web frames, every layer of Information Level (10) and station level (20) are established two 100M Ethernets, the network of Information Level and station level is separate, and wall is connected with described communication network by fieldbus.
3. the EMS of offshore power grid as claimed in claim 2, it is characterized in that, described Information Level (10) comprises at least one station server (111) that is arranged on central control station (11) and is separately positioned on central control station (11) and the multiple host at a plurality of working platforms station (12) (112,121) and the corresponding network equipment that the main frame at central control station (11) and each working platform station (12) can be mutually for subsequent use through authorizing; The described network equipment comprises switch, telecommunication cable or optical cable and optical-electrical converter, and described telecommunication cable or optical cable are submarine cable or the optical cable that is laid between each offshore platform power station.
4. the EMS of offshore power grid as claimed in claim 1, it is characterized in that, described field controller (21) comprises digital protective relay system, intelligent electric kilsyth basalt and electric power meter, UPS device, computer supervisory control system interface and unit control system, wherein, unit control system comprises production control system, safety control system and engine controller; The described communication server (22) is connected 10 with station level (20) with Information Level respectively) be connected and communicate by letter; The network equipment comprises switch, telecommunication cable or optical cable and optical-electrical converter, and described telecommunication cable or optical cable are submarine cable or the optical cable that is laid between each offshore platform power station.
5. such as the EMS of the described offshore power grid of claim l; it is characterized in that; described wall (30) comprises to electric pressure being the two buss lines of 35kV; main transformer; the protection of reactor and synthesis observe and control device; described protection and synthesis observe and control device comprise protection relay and multi-tester table; protection and synthesis observe and control device are connected with the field controller (21) of station level and communicate by letter; and and unit control system; digital protective relay system communication; realization is to information gathering and the control of each wall electric equipment, and described integrated signal collection and measure and control device gather the 35kV busbar voltage; UPS plant failure or abnormal signal; platform cut-off signals and internal heat alarm signal data.
6. the EMS of offshore power grid as claimed in claim 5, it is characterized in that, the multiple host (13) at described a plurality of working platforms stations (12) is communicated by letter with a plurality of field controllers (21) of station level (20) by described communication network, carries out the monitoring and controlling of each generating set, the circuit breaker monitoring and controlling, reactive power in standing, control is regulated in the distribution that reactive power is exerted oneself, preferential dropout control when unit or extra large cable break down, motor circuit starts management control, the black startup in electrical network/power station reaches the control that cooperates with the platform turning off system.
7. the EMS of offshore power grid as claimed in claim 6, it is characterized in that, the monitoring and controlling of described each generating set is active power, reactive power, frequency, power factor, oil temperature, oil pressure, the running status to generating set, the collection of fault-signal, the start-stop sequential control of unit, unit synchronously, the frequency of unit and voltage adjustment; Described circuit breaker monitoring and controlling is the control of divide/closing of the collection of information of reactive power, reactive power, circuit breaker position signal, protection measure and control device to the circuit breaker loop and circuit breaker; The switching of the adjustment control, the adjustment of main transformer on-load voltage regulating switch and the reactor that comprise that the generator reactive power/reactive power in the whole network and the station is exerted oneself is regulated in the distribution that reactive power, reactive power are exerted oneself in the described station; Described preferential dropout be when at least one the generating set at each station or extra large cable because fault preferential dropout out of service; It is automatically to calculate the input of this motor circuit the impact of electrical network to be reached the load from the trend high capacity motor sends the locking enabling signal in the electric network fault situation when each motor circuit puts into operation that described motor circuit starts management control; The black startup in described electrical network/power station is at the electrical network full cut-off or when respectively standing full cut-off, automatic or manual carries out the operation that restores electricity in power station; When fire emergency appears in platform, to automatically shut down electric equipment power supply on the platform by programmable logic controller (PLC) with cooperating of platform turning off system.
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