CN103124071A - On-line monitoring allowable intelligent high voltage reactive power compensation device - Google Patents
On-line monitoring allowable intelligent high voltage reactive power compensation device Download PDFInfo
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- CN103124071A CN103124071A CN2011103668425A CN201110366842A CN103124071A CN 103124071 A CN103124071 A CN 103124071A CN 2011103668425 A CN2011103668425 A CN 2011103668425A CN 201110366842 A CN201110366842 A CN 201110366842A CN 103124071 A CN103124071 A CN 103124071A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/22—Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The invention discloses an on-line monitoring allowable high voltage reactive power compensation system and method. The system comprises a background server, at least one electric power comprehensive measuring and controlling instrument and a wireless communication unit, the background server is connected with the electric power comprehensive measuring and controlling instrument through the wireless communication unit, and the background server acquires measured data transmitted by the electric power comprehensive measuring and controlling instrument. According to the system and the method, a wireless communication technology is applied to a 10/6KV power distribution network reactive power compensation device, devices distributed across the country can be real-timely monitored, and data of the devices can be acquired; and the reactive power flow analysis is applied to the 10/6KV power distribution network reactive power compensation device, the problems of frequently switching capacitors and upwards and inversely feeding reactive power in terms of existing compensation devices are radically solved, the reactive current can be compensated on site in the system, and the optimization of the reactive power flow is guaranteed.
Description
Technical field
The present invention relates to a kind of electric power system device, but relate in particular to a kind of high-pressure reactive compensation device of on-line monitoring.
Background technology
To the continuing to increase of electricity needs, power consumer is had higher requirement to electric power enterprise, will guarantee the safety and reliability of electrical network itself on the one hand, and reduce as far as possible reactive loss, raising operation of power networks economy due to the development of society; On the other hand, satisfy the user to the high-quality requirement of electric energy.The inevitable requirement that exists of this contradiction is introduced new technology to improve the quality of power supply, improves the intelligent level of electrical network itself.Reactive power optimization of power system is the important measures that guarantee security of system, stability, economy, the active loss of reduction network, the raising quality of power supply.
But the existing high-pressure reactive compensation device Main Problems that adopts in the 10/6kV electric power system:
(1) existing protective device lacks the Real-Time Monitoring to the capacitor running status; and shortage is to the record wave energy of switching process and the fault trip process of capacitor group; so that to the capacitor device running state analysis, especially have an accident analysis of causes research lacks basic basis to capacitor device.
(2) can not reach global optimum: present auto-compensation mode is all calculated for the sampling number certificate, exchange because lack between controller, the algorithm that adopts falls behind, controller comprehensively the whole network ruuning situation is that the distribution of reactive power flow is tending towards the most reasonable, it is best that economic benefit reaches, exist and idlely send phenomenon to power distribution network, can not realize the remote measurement to electrical network simultaneously, be unsuitable for the development trend of modernization electrical network.
(3) poor anti jamming capability of controller: because there is large electric current in the operational environment of controller, than high-intensity magnetic field etc.; misoperation or deadlock phenomenon often appear; be not suitable for (or can not) work in the system of harmonic wave is arranged; the function of controller is fairly simple, can not satisfy the control requirement of advanced person's's (needs multi-protective function) bucking-out system.
(4) making of the complete sets of equipment is generally adopted and is separated unit, device, and the cabinet internal structure is complicated, and the packaging technology difficulty is large.
(5) because components and parts are bought in different manufacturers respectively, and the component quality level is uneven, and the parameter between various components and parts coordinates (coupling) inaccurate or unreasonable, causes the compensation equipment operation unreliable, and failure rate is high.
Summary of the invention
Defective for existing high-pressure reactive compensation device, the present invention adopts wireless telecommunications to realize the device in all parts of the country that distributes is carried out the purpose of on-line monitoring, can obtain in real time online the status data of each device, for the accident analysis of electric power system provides reliable foundation.
Technical scheme of the present invention is: but a kind of high-voltage reactive compensation system of on-line monitoring, comprise background server, at least one electric integrated measurement and control instrument and radio communication unit, background server is connected by radio communication unit with electric integrated measurement and control instrument, and background server obtains the measurement data of electric integrated measurement and control instrument transmission and electric integrated measurement and control instrument is controlled.
Described background server comprises data processing unit, Data Management Unit, report generation and administrative unit and data file management and playback unit, data processing unit manipulate measurement data; Data Management Unit is saved in measurement data in database and to the data in database and operates; Report generation and administrative unit are with the result generating report forms of measurement data; Data file management and pay a return visit the unit with the result generating power system normative document of measurement data.
Described electric integrated measurement and control instrument comprises dsp chip, data acquisition module and relay module, data collecting module collected electric network information data, and dsp chip is processed the also output of control relay module to the data that gather.The electric network information data comprise the voltage and current data.
Rated output parameter after dsp chip acquisition voltage and current data, such as active power, reactive power and power factor etc., according to the output that improves nine district's logic diagram control relays, by relay just export can control capacitor switching, thereby realized auto-reactive compensation.Electric integrated measurement and control instrument can be completed separately electric parameter measurement and regional local network control task, can have the RTU of interactive function to work in a catenet as one again, and the trend in the feasible region electrical network is mainly the optimization of reactive power flow.
Described information acquisition module comprises the measurement chip, measures chip and measures electric network data.
Described measurement chip comprises a gain amplifier, two delta sigma analog to digital converters and power computation module, gain amplifier obtains measured electric network information data by register mode, and after the electric network information transfer of data is touched number conversion to the delta sigma analog to digital converter, then transfer data to power computation module and carry out computing.
Described radio communication unit is the GPRS communication unit.
The present invention also provides a kind of high-pressure reactive compensation method, comprises the steps:
1) background server receives and processes the electric network information data that electric integrated measurement and control instrument is measured by radio communication unit;
2) background server sends to electric integrated measurement and control instrument with control command by radio communication unit according to the electric network information data;
3) electric integrated measurement and control instrument is controlled reactive power compensation output according to control command by improved nine district's logic diagrams.
The method that described background server is processed the electric network information data of electric integrated measurement and control instrument measurement is:
1) database management unit is used LabSQL and Access database link method, realizes the LabIEW data link, the information data that receives is saved in database, and the data in database are operated;
2) data processing module carries out Treatment Analysis according to user's needs calling data database data;
3) report generation and the administrative unit result after with Data Management Analysis generates the Excel data sheet;
4) data file management and playback unit adopt ActiveX reference node technology, according to user's needs with the data that gather and the normative document of generating power system as a result after Treatment Analysis.Namely the various data of collection and failure wave-recording are preserved, and transform into the electric power system normative document, and manage.
The method that described radio communication unit transmits electric network information data or control command is:
4) data or control command send to communication base station;
5) communication base station sends to the SGSN node with data or control command;
6) the SGSN node is communicated by letter with gateway support node GGSN, and GGSN processes data or control command;
7) data or control command after GGSN will process send to the purpose network, by the purpose Internet Transmission on terminal.
The GA for reactive power optimization system passes through independently, and the reactive power compensator supervisory control system gathers the online datas such as each node working voltage of the whole network, reactive power active power, and according to the whole network historical summary, minimum take the electric energy loss of power distribution network zone, number of equipment action is minimum as constraints, the operation optimized algorithm, form corresponding control strategy, reactive-load compensation equipment is controlled, thereby realized Regional Network Voltage/Var optimization operation.
The GPRS wireless communication technique is applied in the distribution circuit electric voltage reactive optimizing compensation system, and the Real Time Monitoring subscriber equipment uses state and system parameters to provide remote service to the user, reaches for, both sides' mutual benefit effect.Wireless telecommunications can realize the various parameters of electric power of timing calling with equipment, the change control parameter, and the switching of remote control capacitance group satisfies power supply enterprise and improves electricity consumption line voltage distribution quality, improves power factor, reduces line loss, the demand of increasing the benefit.
Reactive power compensator adopts modular construction, make package unit Knockdown block, standardization and standardization, pass through bus-bar system between each cabinet any, be convenient to expansion and the repair and maintenance of user capacity, to the full extent " product with standard solves nonstandard system ".
Resolve the problem of distribution network reactive power compensation, effectively avoid a large amount of idle long-distance transmissions, reduce line loss, increase electric weight, improve the effectiveness of operation of power grid enterprises.
Can effectively keep the system voltage level, strengthen the voltage stability of system, improve the service level of power grid enterprises.
Has " four is distant " function.
Utilize wireless telecommunication system, the Real Time Monitoring subscriber equipment uses state and system parameters, provides remote service to the user.
Select the special-purpose fling-cut switch of CEMCS type magneto capacitor that volume is little, the life-span is long, breaking capacity is strong.
Package unit one time device installation site is fixed, and once connecting copper bar is all standard size; Control line adopts the plug connector of dress use to connect, and can shift to an earlier date so in advance and produce, and has greatly reduced for the phase, assembles easy to maintenance.
Beneficial effect of the present invention:
1, wireless communication technique being applied in 10/6KV distribution circuit electric voltage reactive optimizing compensation system, realizing Real Time Monitoring and data acquisition to the equipment in all parts of the country that distributes, is that electric power system realizes intelligentized advanced product.Utilize communication function can obtain by data management system many information that front panel can not show, as data such as waveform acquisition, logout, extreme value records.Can when carrying out accident analysis, needs access simultaneously the recorder data of fault front and back,
2, native system with the reactive power flow analytical applications in 10/6KV distribution circuit electric voltage reactive optimizing compensation system, thoroughly solve existing compensation arrangement frequent switching electric capacity and upwards sent idle persistent ailment, make reactive current can be in system local compensation, guaranteed the optimization of reactive power flow.
3, adopt the management of main website of system, realize first the switching by remote wireless network Long-distance Control compensation condenser group, the voltage drop of segmented compensation circuit, improved the quality of voltage of circuit latter end, solved and allow for a long time first section voltage of circuit of power supply department headache too high, and the too low contradiction of latter end voltage.
4, the microcomputer measuring and controlling unit of this device, not only current collection net information gathering, data communication, data storage, compensation are controlled in one, have also increased especially perfect capacitor protecting function, have guaranteed the operation safe, reliable, steady in a long-term of bucking-out system.
5, device for modular construction, is package unit Knockdown block, standardization and standardization, and is any by bus-bar system between each cabinet, is convenient to expansion and the repair and maintenance of capacity.Can select according to the needs of user's compensation capacity and compensation precision the switching cabinet of some normal capacities.
Description of drawings
Fig. 1 is the structural representation of high-voltage reactive compensation system of the present invention;
Fig. 2 is the background server structure chart;
Fig. 3 is that background server is to the flow chart of data;
Fig. 4 is systems soft ware of the present invention interface schematic diagram;
Fig. 5 is the electric integrated measurement and control instrument structural representation in high-voltage reactive compensation system;
Fig. 6 is improved capacitor switching nine district's logic diagrams
Fig. 7 is data wireless communication transmitting-receiving schematic diagram;
Fig. 8 is the flow chart of data processing figure of electric integrated measurement and control instrument;
Embodiment
Describe the present invention below in conjunction with accompanying drawing.
But a kind of high-voltage reactive compensation system of on-line monitoring, comprise background server, at least one electric integrated measurement and control instrument and radio communication unit, background server unit is connected by radio communication unit with electric integrated measurement and control instrument, and background server obtains the measurement data of electric integrated measurement and control instrument transmission.
Visible Fig. 1 of composition of concrete system.
1. background server design
The work of background server is the core of management system, the main responsible real time information that gathers, on the whole reactive power compensator is joined and carry out monitoring and controlling, analyze the running status of reactive power compensator and provide remote service to the user, realize the various parameters of electric power of timing calling with reactive power compensator, the change control parameter, the switching of remote control capacitance group.
Background server comprises data processing unit, Data Management Unit, report generation and administrative unit and data file management and playback unit.See Fig. 2 for details and realized friendly interface ground data management and to user's remote service, can carry out remote control to the capacitance group switching according to measurement data and customer requirements by these four unit, finally realize online high-pressure reactive compensation.
Wherein, the work such as data owner will be preserved by the Access database, inquires about, revises, deletion, and then realize data readback, wave recurrence function.
1, Software Design and Realization
The function of four unit in background server is as follows:
Data processing unit: measurement data is carried out analyzing and processing
Database management unit: use LabSQL and Access data basd link connection technology, realize the LabIEW data link, and realize the operations such as preservation, demonstration, modification, deletion of data.
Report generation and administrative unit: utilize RGT to generate Excel form technology, realize that Excel report generation and data sheet generate, and it is managed operation.
Data file management and playback unit: adopt ActiveX reference node technology, the various data of collection and failure wave-recording are preserved, transform into the electric power system normative document, and manage.
2, the concrete operations of data
The method that in background server, four unit carry out data manipulation is referring to Fig. 3:
1) after monitoring module starts, DNS is configured initialization;
2) monitoring module receives the data that electric integrated measurement and control instrument gathers;
3) database management unit is used LabSQL and Access data basd link connection technology, realizes the LabIEW data link, measurement data is saved in database, and to the data in database preserve, show, the operations such as modification, deletion:
4) data processing module calls corresponding data file and carries out Treatment Analysis;
5) report generation and the administrative unit result after with Data Management Analysis generates the Excel data sheet;
6) data file management and playback unit adopt ActiveX reference node technology, according to user's needs with the data that gather and the normative document of generating power system as a result after Treatment Analysis.Namely the various data of collection and failure wave-recording are preserved, and transform into the electric power system normative document, and manage.
3, the user of background server uses
Can operate system by the interface by the background server user, its concrete interface is divided into 4 grades, referring to Fig. 4.
After user's login, can pass through Real Time Monitoring, the quality of power supply, history curve and equipment control level Four catalogue and obtain corresponding data, and can operate these data.As shown in Figure 4.
2. electric integrated measurement and control instrument design
The core component of electric integrated measurement and control instrument is high-speed data processor DSP, adopt AC Data, calculate and idle work optimization calculating through network topology analysis, trend, reactive power flow and the quality of voltage of the full section of electric integrated measurement and control instrument analysis-by-synthesis circuit, send action command, the switching of control and compensation cell capaciator realizes that line voltage distribution is qualified completely, reactive power compensation on the spot, the purpose of reactive power flow optimized running.
2.1 measuring unit design
Electric integrated measurement and control instrument comprises single-chip microcomputer, data acquisition module and relay.The output of its control relay, thus realize the switching of capacitor.Referring to Fig. 5.
The DSP56F807 digital signal processor, topmost reason is that it is compared with other general dsp and has abundanter I/O mouth and multiple ancillary equipment and abundant memory cell, it is integrated general I/O module GPIO on single dsp chip, 2 asynchronous communication module SCI, 1 synchronous serial peripheral module SPI, 1 controller area network 2.0B, 4 * 4 road A/D conversion modules have been realized singualtion completely.Adopt method for designing flexibly in application, according to the requirement of working control, certain module is taken as simple I/O and uses.In addition, its sheet internal program has realized fully that in this application of installation bus does not go out the mentality of designing of chip, makes the device overall operation have high reliability and stability.
2.2 signals collecting
The main following several parts of the part of data acquisition of system form: voltage transformer, current transformer, precision resistance, measurement chip.Voltage measuring transformer line voltage information, current transformer obtains after power network current information the voltage and current information conveyance is input to filter circuit after level lifting circuit and carries out the signal filtration and be input to the measurement chip to being transported to after signal amplification circuit amplifies, be about to voltage transformer summation current transformer secondary output voltage, current analog amount and be processed into through above-mentioned link that size is directly proportional to input variable, the distortionless analog quantity of phase place, the A/D ALT-CH alternate channel that is input to DSP is sampled, and is translated into to calculate the digital quantity that function is accepted and identified.A measured integrated chip programmable gain amplifier (PGA), the parts such as delta sigma analog to digital converter of two 24.Use him to obtain measured electric current and voltage instantaneous value and effective value (Imax, Umax) and active power by register mode.The delta sigma ADC over-sampling A/D converter that is otherwise known as, use this technology to realize high-resolution, high input broadband, low noise, the AD conversion that antijamming capability is strong with lower cost, and to use the digital to analog converter of this technology be the most easily to be integrated in the integrated circuit of various uses.
2.3 whole software structure
Structuring and modular method for designing have been adopted in the scm software design, in initialize routine, except to register assignment, the data that also will read in E2PROM judge whether capacitor breaks down before power down last time, enter to exist fault not control.Monolithic device image data is to read the voltage that calculates, electric current, the valid data such as meritorious from measure chip.For guaranteeing that capacitor cuts rear abundant discharge, designed 10 minutes protection functions, do not control during this time.When programming, stress the protection of capacitor, the defencive function of realization has: under-voltage protection, overvoltage protection, overcurrent protection, open-phase protection.Guaranteed the safe operation of device from software.
By the voltage and current data that electric integrated measurement and control instrument obtains, the rated output parameter, thus relay is controlled the switching of control capacitor, its compensating power improves power factor; Increase the transmittability of electrical network, improve utilization rate of equipment and installations; Reduce line loss and transformer loss; Reduce place capacity; Improve quality of voltage.
Electric integrated measurement and control instrument carries out (referring to Fig. 6, wherein, the Δ U in figure refers to the voltage variety of switching one 10kV that group capacitor causes) to the control of capacitor group according to following improved nine district's logic diagram strategies:
1st district: idle greater than the idle upper limit, voltage is thrown capacitor lower than lower voltage limit;
2nd district: idle voltage is qualified greater than the idle upper limit, throws capacitor;
3rd district: idle greater than the idle upper limit, voltage guarantees that greater than upper voltage limit voltage is qualified, cuts by force capacitor;
4th district: idle qualified, voltage guarantees that greater than upper voltage limit voltage is qualified, cuts by force capacitor;
5th district: idle lower than idle lower limit, voltage is cut capacitor greater than upper voltage limit;
6th district: idle voltage is qualified lower than idle lower limit, cuts capacitor;
7th district: idle lower than idle lower limit, voltage guarantees that lower than lower voltage limit voltage is qualified, throws by force capacitor;
8th district: idle qualified, voltage guarantees that lower than lower voltage limit voltage is qualified, throws by force capacitor;
9th district: idle qualified, voltage is qualified, attonity;
10th district: idle voltage is qualified greater than the idle upper limit, but after throwing a group capacitor, voltage will be greater than upper voltage limit, attonity;
11st district: idle voltage is qualified less than idle lower limit, but after cutting a group capacitor, voltage will be lower than lower voltage limit, attonity;
12nd district: voltage is greater than the overvoltage limit value, and reaches setting time, entirely cuts capacitor;
13rd district: voltage is less than under-voltage limit value, and reaches setting time, entirely cuts capacitor.
Software has adopted C language and compilation hybrid programming, has adopted the Interruption store historical data in Software for Design, and serial-port communication interrupts uploading, and passes down real time data and historical data, and hardware interrupts structure keyboard commands are checked parameter or revised parameter.
3. radio communication unit
Radio communication unit is the GPRS communication unit, the information data that the electric integrated measurement and control instrument of background server utilization " GPRS wireless communication networks " calling is measured.This element realizes that system reaches four distant (remote measurement, remote signalling, remote regulating, remote controls), unattended operation, to Real Time Monitoring and the data acquisition of the equipment in all parts of the country that distributes, makes Realization of Product intelligent.
3.1GPRS the transmitting-receiving of network packet
Terminal equipment receive on electric integrated measurement and control instrument by serial mode and with the GSM base station communication.The GPRS packet is to send to the SGSN node from the base station, and SGSN and gateway support node GGSN communicate.GGSN processes accordingly to grouped data, re-sends to the purpose network, as Internet or network X.25, sees Fig. 7.
The IP bag of travelling carriage address is arranged from Internet, sign, received by GGSN, then be forwarded to SGSN, then be sent on travelling carriage.During the work of electric integrated measurement and control instrument, user's Upper system sends work order and data to it, and data are carried out the ICP/IP protocol conversion by the IP module, break into the IP packet, then sends to SGSN by the MC35 module with the form of GPRS packet.
Take the IP addressing of address as the basis, so the destination server end only needs simply to access Internet, and the IP address that possesses that public network distributes gets final product due to the GPRS network working method.Simultaneously, because GPRS end product itself is by network provider distributing IP address dynamically, not entering when connecting holding state, itself is not possess the IP address.Therefore must be first the control survey unit be carried out corresponding initialization, and initiatively send data to server by device end, connect, destination server could be controlled terminal equipment and electric integrated measurement and control instrument.
After electric integrated measurement and control instrument electrification reset, at first MAX232 is carried out initialization, complete with external connection module and handle through consultation, as baud rate, whether parity check etc. is arranged.Then, carry out initialization by 1 pair of MC35 module of serial ports, check such as SIM card situation, GPRS network coverage condition, RST etc.Next, carry out interrupt scanning, whether monitoring has data to arrive.During relevant data, if external data, with regard to log-on data packing processing procedure; If the GPRS data unpack processing procedure with regard to log-on data.If there is no data, system enters energy-saving mode.In data packings processing procedure, if the poor signal of system detected, network connects not smooth, is not perhaps the GPRS network area of coverage, will carry out data and send caching process, simultaneously data is put into transmit queue etc. to be sent.The data receiver flow process is referring to Fig. 8.
Claims (9)
1. but the high-voltage reactive compensation system of an on-line monitoring, it is characterized in that, comprise background server, at least one electric integrated measurement and control instrument and radio communication unit, background server is connected by radio communication unit with electric integrated measurement and control instrument, and background server obtains the measurement data of electric integrated measurement and control instrument transmission and electric integrated measurement and control instrument is controlled.
2. high-voltage reactive compensation system as claimed in claim 1, it is characterized in that, described background server comprises data processing unit, Data Management Unit, report generation and administrative unit and data file management and playback unit, data processing unit manipulate measurement data; Data Management Unit is saved in measurement data in database and to the data in database and operates; Report generation and administrative unit are with the result generating report forms of measurement data; Data file management and pay a return visit the unit with the result generating power system normative document of measurement data.
3. high-voltage reactive compensation system as claimed in claim 1, it is characterized in that, described electric integrated measurement and control instrument comprises dsp chip, data acquisition module and relay module, data collecting module collected electric network information data, dsp chip is processed the also output of control relay module to the data that gather.
4. high-voltage reactive compensation system as claimed in claim 3, is characterized in that, described information acquisition module comprises the measurement chip.
5. high-voltage reactive compensation system as claimed in claim 4, it is characterized in that, described measurement chip comprises a gain amplifier, two delta sigma analog to digital converters and power computation module, gain amplifier obtains measured electric network information data by register mode, and after the electric network information transfer of data is carried out analog-to-digital conversion to the delta sigma analog to digital converter, then transfer data to power computation module and carry out computing.
6. high-voltage reactive compensation system as claimed in claim 1, is characterized in that, described radio communication unit is the GPRS communication unit.
7. a high-pressure reactive compensation method, comprise the steps:
1) background server receives and processes the electric network information data that electric integrated measurement and control instrument is measured by radio communication unit;
2) background server sends to electric integrated measurement and control instrument with control command by radio communication unit according to the electric network information data;
3) electric integrated measurement and control instrument is controlled reactive power compensation output according to control command by improved nine district's logic diagrams.
8. high-pressure reactive compensation method as claimed in claim 7, is characterized in that, the method that described background server is processed the electric network information data of electric integrated measurement and control instrument measurement is:
1) database management unit is used LabSQL and Access database link method, realizes the LabIEW data link, the information data that receives is saved in database, and the data in database are operated;
2) data processing module carries out Treatment Analysis according to user's needs calling data database data;
3) report generation and the administrative unit result after with Data Management Analysis generates the Excel data sheet;
4) data file management and playback unit adopt ActiveX reference node technology, according to user's needs with the data that gather and the normative document of generating power system as a result after Treatment Analysis.
9. high-pressure reactive compensation method as claimed in claim 7, is characterized in that, the method that described radio communication unit transmits electric network information data or control command is:
1) data or control command send to communication base station;
2) communication base station sends to the SGSN node with data or control command;
3) the SGSN node is communicated by letter with gateway support node GGSN, and GGSN processes data or control command; Data or control command after GGSN will process send to the purpose network, by the purpose Internet Transmission on terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103668425A CN103124071A (en) | 2011-11-18 | 2011-11-18 | On-line monitoring allowable intelligent high voltage reactive power compensation device |
Applications Claiming Priority (1)
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| CN103457269A (en) * | 2013-09-16 | 2013-12-18 | 国网河南省电力公司焦作供电公司 | Power distribution network voltage reactive power automatic control system |
| CN103618381A (en) * | 2013-11-13 | 2014-03-05 | 国家电网公司 | Protecting and measuring integrated comprehensive distribution box |
| CN103972902A (en) * | 2014-04-11 | 2014-08-06 | 广州供电局有限公司 | Reactive compensation control method and device of low voltage distribution network |
| CN104502741A (en) * | 2014-11-26 | 2015-04-08 | 河北旭辉电气股份有限公司 | Remote and online monitoring system for static var generator |
| CN104656612A (en) * | 2014-12-29 | 2015-05-27 | 四川双众科技有限公司 | Running status remote detection system for reactive compensation device |
| CN104917189A (en) * | 2015-05-26 | 2015-09-16 | 华南理工大学 | Line reactive optimal control method based on optimal reactive transmitting power |
| CN104934985A (en) * | 2015-07-06 | 2015-09-23 | 广州东芝白云电器设备有限公司 | Method of realizing transformer-substation-voltage reactive power control and measurement and control apparatus |
| CN105556418A (en) * | 2013-09-06 | 2016-05-04 | 亚马逊科技公司 | Managing power feeds through waveform monitoring |
| CN106329544A (en) * | 2016-08-31 | 2017-01-11 | 南京易司拓电力科技股份有限公司 | Power distribution network voltage reactive power compensation equipment management system |
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| CN108736482A (en) * | 2018-04-27 | 2018-11-02 | 唐山钢铁集团有限责任公司 | A kind of voltage power-less adjusting method |
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