A kind of Load Control Management System based on GPRS network
The utility model relates to the power supply and distribution of electric power management system, a kind of specifically Load Control Management System based on GPRS network.
In the existing power supply and distribution of electric power management system, need in time to handle following information at industrial enterprise:
1, obtains the power supply information at electricity consumption scene in real time, as voltage, electric current, active energy, reactive energy etc.;
2, the very first time receives the warning information of load control terminal, as the reverse preface of voltage circuit, the reverse preface of current circuit, the short circuit of three-phase CT primary side, three-phase CT secondary circuit short-circuit, three-phase CT secondary side open circuit, three-phase current reversed polarity etc.;
3, need the long-range electricity consumption control of loading to electricity consumption industrial enterprise;
4, the load control terminal of industrial enterprise is carried out the remote meter reading management, copy and accept 48 of every day meritorious with data such as capacity of idle power, power, maximum demand, promptly check meter once every half an hour, whole day totally 48 check meter a little, the gained data are called 48 point data;
5, in maintenance, need know the terminal fault reason in advance to long-distance meter-reading system and load control terminal;
6, need know the electric energy loss situation of every circuit.
But, each load control terminal all is distributed in apart from the far-out industrial enterprise of power supply and distribution of electric power management system, how to utilize convenient reliable mode that each load control terminal and power supply and distribution of electric power management system are connected in real time in order to need most the problem of solution.Existing technical scheme is: adopt 230MHz radio station mode, the main website of power supply and distribution of electric power management system by the 230MHz private radio signal of telecommunication with the load control terminal be connected, exchange message, its shortcoming is: the one, and one-time investment is excessive, and system is long standby time; The 2nd, 230MHz ultrashort wave communication belongs to line communication, and it is bigger that communication quality is influenced by external factor such as geography, environment, weather, and particularly in landform areas with complicated comparatively, communication quality can't guarantee.In addition its frequency range disclose constant, easily by the burst Electromagnetic Interference; The 3rd, there is local risk of paralysing.The distance of 230MHz communication is about 50 kilometers, and long-distance transmissions must increase relay station, and this had both increased equipment investment, also can cause the relay station fault will cause the problem that terminal can't communicate with and a large amount of client's initial data is lost under it; The 4th, transmission rate is low, and its stable data transmission speed is 2400bit/s, requirement that can not the satisfying magnanimity message transmission; The 5th, various places are wireless, and negative control all is the private network special use, does not meet on national network trend, is unfavorable for the interchange of information on load.
The utility model content
At the defective that exists in the prior art, the purpose of this utility model is to provide a kind of Load Control Management System based on GPRS network, be connected in real time with the load control terminal by GPRS network, receive on-the-spot warning information in real time, in real time the scene is controlled, fixed point is copied and accepted on-the-spot electric weight, simultaneously the meter reading data of every day is analyzed, found out the terminal fault reason, and on the basis of meter reading data, by the line loss analyzing function, analyze the electric energy loss situation of every circuit.
For reaching above purpose, the technical scheme that the utility model is taked is:
A kind of Load Control Management System based on GPRS network, it is characterized in that: comprise by netting twine interconnected preposition unit and Database Unit, preposition unit is by GPRS network and load control terminal swap data, and preposition unit and Database Unit are equipped with the communication interface with the client unit swap data.
On the basis of technique scheme, preposition unit, client unit and Database Unit defer to that ICP/IP protocol connects, swap data.
On the basis of technique scheme, said Database Unit is a historic data server, said preposition unit is the front server that is provided with the GPRS communication module, said client unit is a work station, historic data server, front server and work station all are connected with a switch by netting twine, switch is connected with fire compartment wall by netting twine, and fire compartment wall is connected with router by netting twine, router and GPRS network wireless connections.
On the basis of technique scheme, historic data server and front server are two-node cluster hot backup, and two desk calendar history data servers are by the disk array shared data.
Load Control Management System described in the utility model, be connected in real time with the load control terminal by GPRS network, receive on-the-spot warning information in real time, in real time the scene is controlled, fixed point is copied and accepted on-the-spot electric weight, simultaneously the meter reading data of every day is analyzed, find out the terminal fault reason, and on the basis of meter reading data,, analyze the electric energy loss situation of every circuit by the line loss analyzing function.
Description of drawings
The utility model has following accompanying drawing:
Fig. 1 is based on the system configuration schematic diagram of the Load Control Management System of GPRS network
Fig. 2 is based on the grid topological diagram of the Load Control Management System of GPRS network
Fig. 3 downward message flow chart
Fig. 4 reports the message flow chart
Fig. 5 line loss analyzing process chart
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the system configuration schematic diagram of the Load Control Management System based on GPRS network described in the utility model, comprise by netting twine interconnected preposition unit and Database Unit, preposition unit is by GPRS network and load control terminal swap data, and preposition unit and Database Unit are equipped with the communication interface with the client unit swap data.Preposition unit is unique connecting interface of native system and load control terminal, be responsible for the communicating by letter of load control terminal, processing terminal message, be responsible for stipulations and resolve, terminal regularly called together survey and mend the survey data and deposit in the database of Database Unit, the request of client unit is accepted in preposition unit simultaneously, becomes message to send to the load control terminal main website command analysis; Client unit provides human-computer interaction interface for native system, is responsible for data exhibiting output, as figure, form and curve etc.; Preserve load control terminal parameter, files on each of customers, historical data etc. in the Database Unit.On the basis of technique scheme, preposition unit, client unit and Database Unit defer to that ICP/IP protocol connects, swap data.The three is the native system organic component, and is indispensable.
On the basis of technique scheme, as shown in Figure 2, said Database Unit is a historic data server, said preposition unit is the front server that is provided with the GPRS communication module, said client unit is a work station, and historic data server, front server and work station all are connected with a switch by netting twine, and switch is connected with fire compartment wall by netting twine, fire compartment wall is connected with router by netting twine, router and GPRS network wireless connections.The GPRS signal of load control terminal is connected to router via GPRS network, and by connecting with front server behind fire compartment wall, the switch, message is handled by front server successively.Outer net and Intranet are isolated by fire compartment wall, have strengthened security of system.The a certain connectivity port of the open place of Database Unit server, the connection request of preposition unit of passive acceptance and client unit, but Database Unit does not initiatively connect preposition unit and client unit; The a certain connectivity port of open place, preposition unit server, the passive connection request (initiatively not connecting client unit) of accepting client unit, preposition unit initiatively connects Database Unit.Preposition unit and database are the running background part.
On the basis of technique scheme, historic data server and front server are two-node cluster hot backup, and two desk calendar history data servers are by the disk array shared data.Two-node cluster hot backup has reduced the downtime that mechanical disorder causes, and has strengthened the stability of a system.
The function of the Load Control Management System based on GPRS network described in the utility model is as follows:
■ terminal (that is: load control terminal) parameter setting, the long-range terminal parameter that is provided with.
The ■ real time data is called survey together, remote measurement terminal parameter and ammeter data.
■ customer charge control to user's control of loading, comprises electric energy control, power control etc.
The on-the-spot abnormality alarming of ■, on-the-spot abnormal information alarm.
■ historical data collection storage is to historical data collection and storage.
■ operating condition statistics, the operating condition of statistics on-site terminal is for on-site maintenance provides support.
The ■ line loss analyzing, the analysis circuit loss.
The management of ■ operating right
The ■ Operation Log
The interface of ■ and other system is as MIS etc.
In the operation to terminal (that is: load control terminal), the direction difference according to message is divided into up and downlink message, wherein uplink message be by terminal to main website (that is: client unit), downlink message is to terminal by main website.
Fig. 3 is that the native system message issues flow chart, and main website sends to front end processor with parameters such as the corresponding command and terminal addresss, and the front end processor analysis is organized the message of corresponding format according to this order then, according to terminal address message is sent to corresponding terminal again.
Fig. 4 is native system message upflow figure, front end processor is resolved after receiving message, if real time data is then judged, if alarm data then the very first time sends to main website with warning information, show or carry out sound alarm by main website, and this warning information is preserved in the database by preposition.If this real time data is to call the return data of surveying or being provided with in real time together, then this information is carried out reporting main website behind the packet parsing.If the historical data that these data are terminals to be returned is then preserved this historical data in the database.
Fig. 5 is the line loss analyzing resume module flow process of native system, and the line loss electric weight is the electric energy loss in a certain period, line loss electric weight=amount of power supply-electricity sales amount wherein, line loss rate=(amount of power supply-electricity sales amount)/amount of power supply * 100%.At first system calls the electric weight of a certain moment Source of Gateway Meter in survey line road together, and electric weight deducts the electric weight in a moment and draws amount of power supply this moment then; System calls the electric weight of surveying all large users and distribution transformer under the circuit this moment again together, and the electric weight electric weight that deducts previous moment draws electricity sales amount equally this moment, draws the line loss electric weight thereby deduct electricity sales amount by amount of power supply, can draw line loss rate by the line loss electric weight.
Real-time working condition statistics and line loss analyzing function that the utility model system has, the control and management that can be electric power system provides important reference data.The operating mode statistics is that system can analyze the current state of terminal automatically, and safeguarding for terminal provides foundation; Line loss analyzing is the electric energy loss that system automatically analyzes every circuit, particularly can each bar line loss of real-time analysis, decision-making foundation is provided.
The utility model has the advantage of: the first, utilize public GPRS network, power system Do not need to set up special communication network, thereby save application cost; The second, GPRS moves Communication network is perfect, wide coverage, and it is little affected by extraneous factor; Three, GPRS network base It is more to stand, and local situation of paralysing can not appear in the redundancy height. Four, GPRS transmission speed The rate height, its data transmission bauds theoretical peak can reach 115kps, and it is wireless to be higher than 230MHz far away Communicate by letter, be conducive to adopt the terminal device of higher intelligence. Five, GPRS has whole nation unification Network, be convenient to the data exchange between the adjacent electrical network. GPRS is as 2.5 generations of mobile communication Technology, be the gsm mobile telephone system to important step that 3G (Third Generation) Moblie strides forward Suddenly. GPRS is GPRS (General Packet Radio Service) Be called for short, it has broken through GSM (Global System for Mobile Communications) Net can only provide the Circuit-switched mode of thinking, by increasing corresponding functional entity and to existing Base station system carry out the part transformation and realize packet switch, the input of this transformation is comparatively speaking And little, but the user data rate that obtains is considerable. GPRS allows the user to arrive at end End transmits and receive data under the packet transfer mode, and does not need to utilize the net of circuit switched mode The network resource. Thereby provide a kind of efficiently, wireless packet data service cheaply. Especially suitable That be used for to be interrupted, paroxysmal and frequently, a small amount of transfer of data, also be applicable to once in a while The big data quantity transmission.
Technology maturation that native system adopts is reliable, and with low cost, can large-area applications. With The time native system on the remote meter reading basis, operating mode statistics is became one with line loss analyzing is organic, For terminal maintenance and Analysis of Policy Making provide foundation, particularly the line loss analyzing function can be united in real time Count each bar line loss situation, these are important reference datas of control and management of power system.