CN103439591A - Electric energy quality monitoring and controlling system - Google Patents
Electric energy quality monitoring and controlling system Download PDFInfo
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- CN103439591A CN103439591A CN2013102232954A CN201310223295A CN103439591A CN 103439591 A CN103439591 A CN 103439591A CN 2013102232954 A CN2013102232954 A CN 2013102232954A CN 201310223295 A CN201310223295 A CN 201310223295A CN 103439591 A CN103439591 A CN 103439591A
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Abstract
The invention discloses an electric energy quality monitoring and controlling system. The electric energy quality monitoring and controlling system mainly comprises a shared memory data interaction module, a parameter read-write module, a DPRAM read-write module, a timed recording module, a high-speed recording module, a qualified rate statistics module, an out-of-limit monitoring module and the like, and further comprises a DI monitoring module high in requirement for real-time performance, a DO control module, an electric energy measurement module and a PPC memory management module. The working processes comprise the steps of initializing a PPC system, creating a thread, creating shared memory, loading a driving device, reading calculation factors, reading parameters, and carrying out data logical operation, transmission, data storage and communication. The electric energy quality monitoring and controlling system can carry out advanced electric energy quality analysis and high-precision measurement, monitor electric energy quality in real time and make electric energy consumers obtain various operating data of electric energy in the first time, and therefore the electric energy quality can be assessed and monitored fully, and the strategy and scheme for improving the electric energy indicators can be proposed.
Description
Technical field
The present invention designs intelligent grid monitoring field, is specifically related to a kind of electrical network electric energy quality monitoring system.
Technical background
Along with the reform of electric power system, the progressively development and improvement of electricity market, the quality of power supply becomes the key character parameter of weighing electric power supply.Improving the quality of power supply need to be analyzed from the links such as production, transmission, distribution and use of electric energy, is not only electrical production business, supplier's responsibility, more with power customer, close relationship is arranged.
Along with scientific and technological progress, in modern power systems, use electrical load conditions that great variation has occurred, such as developing rapidly of semiconductor rectifier, thyristor voltage regulation and the loads such as frequency converter adjusting gear, electric furnace arrangement for producing steel, electric railway and household electrical appliance, because it is non-linear, impact and the unbalanced electrical characteristics of using, make the voltage waveform distorted of electrical network and cause () harmonic excess, produce voltage fluctuation, flickering and three-phase imbalance simultaneously, even cause system frequency fluctuation etc., the power supply quality of power supply is caused to serious impact.Make the research of the quality of power supply very urgent by increasing power quality problem based on occurring in electrical network.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of monitoring function variation, precision, intelligentized electric energy quality monitoring system.
For solving the problems of the technologies described above, the present invention is achieved through the following technical solutions: a kind of power quality supervisory information system, and this system mainly comprises the functional modules such as shared drive data interaction, read-write parameter, read-write DPRAM, time recording, high-speed record, qualification rate statistics, out-of-limit monitoring; Requirement of real-time is high in addition DI monitoring, DO control and electric energy metrical, the PPC storage administration; Workflow is the PPC system initialization, creates thread, creates shared drive, load driver equipment, reads calculated factor, reads parameter and carry out the data logical operation and transmission, data storage and communication.
Further, described PPC read-write DPRAM module, the designed size of RAM is 16kB, distribute space, 1kB left and right to transmit data for PowerPC to DSP, distribute 14kB to transmit data for DSP to PowerPC, a remaining part is mutual for sign and time, separately leaves certain surplus.
Further, after described time recording computing module receives the DSP sampled data, carry out max, min, avg, 95% probable value statistics, the main analog quantity that calculating collects, result data stores in buffer zone, during Deng the data that are accumulated to 30 times (136.875KB), carry out format conversion and be saved to the SD card; The data of calculating are 150cycle (3s) real time datas that DSP transmits; The measurement period of mean value, maximal value, minimum value, 95% probable value can arrange (1min～10min), and its statistics least unit is 150cycle, and measurement period is the time recording time that system configuration parameter is set.
Further, described high-speed record module high-speed record half cycles voltage/current effective value.Obtain the RMS of half cycles by integral algorithm, record 8 passages, the data of 00 RMS of every path 10 (record triggers 900 points after front 100 points+triggering).
Further, described electric flux computing module when receive 1 second timing to the notice after, calculate electric flux, and receive 1 minute timing to notice from Timing Processing, by total degrees of ammeters and the harmonic wave electric degree calculation result data of totally 15 times regularly store into ferroelectric in.
Further, 8 DI state input ports of described DI module 1ms timing scan, if having displacement information just to carry out the input signal filtering time processes, and form the SOE record store into ferroelectric in, according to DI state displacement information and the time of scanning, the state of real time record DI, and do the processing of design in advance, as DI interlock DO, startup record ripple etc.
Further, after described DO module receives Threshold Crossing Alert or directly controls output notice, carry out alarm operation (control output if be associated with, control output) or directly control output.
Further, described out-of-limit logging modle monitoring 50cycle real time data (1S real-time measurement values), action delay can be established, and can trigger DO warning output, LED alarm indication, alarm record, high-speed record and record wave energy, out-of-limit logging modle is carried out out-of-limit judgement, and carry out the control of filtering time, out-of-limitly just carry out out-of-limit indication and leave out-of-limit logout once determine.
Further, described shared drive module master control process will receive the DPRAM real time data and deposit in shared drive, and for operations such as QT-GUI process poll demonstrations, the real time data of regularly carrying out DPRAM reads, and deposit in shared drive, carry out exchanges data with GUI.
Further, described device configuration parameter module reads the configuration parameter of QT interface and background maintenance, and passes in DSP according to actual, and whether module changes according to the configuration parameter zone bit, and whether determine needs to read configuration parameter again.
The present invention can carry out advanced power quality analysis, high-precision measurement, the Real-Time Monitoring quality of power supply, make power consumer can obtain every service data of electric energy within the very first time, thereby the quality of power supply is carried out to assessment fully and monitoring, propose to improve countermeasure and the scheme of power index.
The accompanying drawing explanation
Fig. 1 is workflow diagram of the present invention;
Fig. 2 is dual port RAM allocation table of the present invention;
Fig. 3 is that dual port RAM of the present invention sends data flowchart;
Fig. 4 is this present invention dual port RAM receiving data stream journey figure;
Fig. 5 is time recording statistical flowsheet figure of the present invention;
Fig. 6 is high-speed record stores processor process flow diagram of the present invention;
Fig. 7 is energy calculate process flow diagram of the present invention;
Fig. 8 is that SOE of the present invention records process flow diagram;
Fig. 9 is DO module controls output process flow diagram of the present invention;
Figure 10 is the out-of-limit module process flow diagram of the present invention;
Figure 11 is shared drive module process flow diagram of the present invention;
Figure 12 is configuration parameter module process flow diagram of the present invention.
Embodiment
This system mainly comprises the functional modules such as shared drive data interaction, read-write parameter, read-write DPRAM, time recording, high-speed record, qualification rate statistics, out-of-limit monitoring; Requirement of real-time is high in addition DI monitoring, DO control and electric energy metrical, the PPC storage administration; Shown in Fig. 1, workflow is the PPC system initialization, creates thread, creates shared drive, load driver equipment, reads calculated factor, reads parameter and carry out the data logical operation and transmission, data storage and communication.
PPC read-write DPRAM module, the designed size of RAM is 16kB, distribute space, 1kB left and right to transmit data for PowerPC to DSP, distribute 14kB to transmit data for DSP to PowerPC, a remaining part is mutual for sign and time, separately leave certain surplus, as shown in Figure 2, the dual port RAM interaction logic as shown in Figure 3, Figure 4 for the MAP table of dual port RAM.
After the time recording computing module receives the DSP sampled data, carry out max, min, avg, 95% probable value statistics, the main analog quantity that calculating collects, result data stores in buffer zone, during Deng the data that are accumulated to 30 times (136.875KB), carry out format conversion and be saved to the SD card, as shown in Figure 5; The data of calculating are 150cycle (3s) real time datas that DSP transmits, and its statistics minimum interval is also 150cycle; The measurement period of mean value, maximal value, minimum value, 95% probable value can be revised the time recording time of CONFIG.SYS and realize.
High-speed record module records half cycles voltage/current effective value, shown in Fig. 6, obtain the RMS of half cycles by integral algorithm, record 8 passages, the data of 00 RMS of every path 10 (record triggers 900 points after front 100 points+triggering).
The electric flux computing module from receive 1 second timing to the notice, calculate electric flux, and receive 1 minute timing to notice from Timing Processing, total degrees of ammeters is reached to the harmonic wave electric degree calculation result data of totally 15 times and regularly store, shown in Fig. 7, electric degree=current instantaneous power * cumulative time.
Shown in Fig. 8,8 DI state input ports of DI module 1ms timing scan, process if there is displacement information just to carry out the input signal filtering time, and form the SOE record store into ferroelectric in, according to DI state displacement information and the time of scanning, the state of real time record DI.
Shown in Fig. 9, after the DO module receives Threshold Crossing Alert or directly controls output notice, carry out alarm operation (control output if be associated with, control output) or directly control output.
Shown in Figure 10, out-of-limit logging modle monitoring 50cycle real time data (1s real-time measurement values), action delay can be established, and can trigger DO warning output, LED alarm indication, alarm record, high-speed record and record wave energy, out-of-limit logging modle is carried out out-of-limit judgement, and carry out the control of filtering time, out-of-limitly just carry out out-of-limit indication and leave out-of-limit logout once determine.
Shown in Figure 11, shared drive module master control process will receive the DPRAM real time data and deposit in shared drive, and for operations such as QT-GUI process poll demonstrations, the real time data of regularly carrying out DPRAM reads, and deposits in shared drive, with GUI, carries out exchanges data.
Shown in Figure 12, device configuration parameter module reads the configuration parameter of QT interface and background maintenance, and passes in DSP according to actual, and whether module changes according to the configuration parameter zone bit, and whether determine needs to read configuration parameter again.
Claims (10)
1. a power quality supervisory information system is characterized in that: this system mainly comprises the functional modules such as shared drive data interaction, read-write parameter, read-write DPRAM, time recording, high-speed record, qualification rate statistics, out-of-limit monitoring; Requirement of real-time is high in addition DI monitoring, DO control and electric energy metrical, the PPC storage administration; Workflow is the PPC system initialization, creates thread, creates shared drive, load driver equipment, reads calculated factor, reads parameter and carry out the data logical operation and transmission, data storage and communication.
2. power quality supervisory information system according to claim 1, it is characterized in that: described PPC read-write DPRAM module, the designed size of RAM is 16kB, distributes space, 1kB left and right to transmit data for PowerPC to DSP, distributes 14kB to transmit data for DSP to PowerPC.
3. power quality supervisory information system according to claim 1, it is characterized in that: after described time recording computing module receives the DSP sampled data, carry out max, min, avg, 95% probable value statistics, the main analog quantity that calculating collects, result data stores in buffer zone, during Deng the data that are accumulated to 30 times (136.875KB), carry out format conversion and be saved to the SD card; The data of calculating are 150cycle (3s) real time datas that DSP transmits; The measurement period of mean value, maximal value, minimum value, 95% probable value can arrange (1min～10min), and its statistics least unit is 150cycle, and measurement period is the time recording time that system configuration parameter is set.
4. power quality supervisory information system according to claim 1, it is characterized in that: described high-speed record module high-speed record half cycles voltage/current effective value, obtain the RMS of half cycles by integral algorithm, record 8 passages, the data of 00 RMS of every path 10 (record triggers 900 points after front 100 points+triggering).
5. power quality supervisory information system according to claim 1, it is characterized in that: described electric flux computing module when receive 1 second timing to the notice after, calculate electric flux, and receive 1 minute timing to notice from Timing Processing, total degrees of ammeters is reached to the harmonic wave electric degree calculation result data of totally 15 times and regularly store.
6. power quality supervisory information system according to claim 1, it is characterized in that: 8 DI state input ports of described DI module 1ms timing scan, if having displacement information just to carry out the input signal filtering time processes, and form the SOE record store into ferroelectric in, according to DI state displacement information and the time of scanning, the state of real time record DI, and do the processing of design in advance.
7. power quality supervisory information system according to claim 1, it is characterized in that: after described DO module receives Threshold Crossing Alert or directly controls output notice, carry out alarm operation (control output if be associated with, control output) or directly control output.
8. power quality supervisory information system according to claim 1, it is characterized in that: described out-of-limit logging modle monitoring 50cycle real time data (1S real-time measurement values), action delay can be established, and can trigger DO warning output, LED alarm indication, alarm record, high-speed record and record wave energy, out-of-limit logging modle is carried out out-of-limit judgement, and carry out the control of filtering time, out-of-limitly just carry out out-of-limit indication and leave out-of-limit logout once determine.
9. power quality supervisory information system according to claim 1, it is characterized in that: described shared drive module master control process will receive the DPRAM real time data and deposit in shared drive, for operations such as QT-GUI process poll demonstrations, the real time data of regularly carrying out DPRAM reads, and deposit in shared drive, carry out exchanges data with GUI.
10. power quality supervisory information system according to claim 1, it is characterized in that: described device configuration parameter module reads the configuration parameter of QT interface and background maintenance, and pass in DSP according to actual, whether module changes according to the configuration parameter zone bit, and whether determine needs to read configuration parameter again.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105974192A (en) * | 2016-05-05 | 2016-09-28 | 国网重庆市电力公司电力科学研究院 | Electric energy meter data interface satisfying IR46 metering independence requirements and verifying method |
| CN109240128A (en) * | 2018-11-26 | 2019-01-18 | 山东大学 | A kind of new energy supply of cooling, heating and electrical powers real-time emulation system and method |
| CN109933440A (en) * | 2019-02-22 | 2019-06-25 | 南京电研电力自动化股份有限公司 | Protective module and management module exchange method, system and equipment in centralized protective device |
| CN112362978A (en) * | 2020-09-25 | 2021-02-12 | 国网辽宁省电力有限公司大连供电公司 | Three-phase power unbalance rapid detection method and device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974192A (en) * | 2016-05-05 | 2016-09-28 | 国网重庆市电力公司电力科学研究院 | Electric energy meter data interface satisfying IR46 metering independence requirements and verifying method |
| CN109240128A (en) * | 2018-11-26 | 2019-01-18 | 山东大学 | A kind of new energy supply of cooling, heating and electrical powers real-time emulation system and method |
| CN109933440A (en) * | 2019-02-22 | 2019-06-25 | 南京电研电力自动化股份有限公司 | Protective module and management module exchange method, system and equipment in centralized protective device |
| CN109933440B (en) * | 2019-02-22 | 2023-07-18 | 南京电研电力自动化股份有限公司 | Method, system and equipment for interaction between protection module and management module in centralized protection device |
| CN112362978A (en) * | 2020-09-25 | 2021-02-12 | 国网辽宁省电力有限公司大连供电公司 | Three-phase power unbalance rapid detection method and device |
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| CN103439591B (en) | 2017-04-19 |
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