CN103513122A - Power quality monitoring method and device - Google Patents
Power quality monitoring method and device Download PDFInfo
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- CN103513122A CN103513122A CN201210217612.7A CN201210217612A CN103513122A CN 103513122 A CN103513122 A CN 103513122A CN 201210217612 A CN201210217612 A CN 201210217612A CN 103513122 A CN103513122 A CN 103513122A
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Abstract
The invention provides a power quality monitoring method which comprises the steps that voltages and currents of a monitoring point in a transformer substation are collected; according to the voltages and the currents, power quality data of the monitoring point are obtained by computing; the power quality data are stored in a preset power quality data information model; the power quality data stored in the power quality data information model are output in a mapping mode according to the made message of an abstract communication service interface. The consistency of the power quality data information model is used for guaranteeing the universality of the power quality data, and meanwhile the power quality data are output in the mapping mode according to the made message of the abstract communication service interface, so that the contradiction between the stability and the expansibility of a communication protocol is resolved, the interactivity between power quality monitoring device data of different manufacturers is guaranteed, the future expansibility is guaranteed, and meanwhile integration of different monitoring devices is achieved to the largest degree. Accordingly, the problem the in the prior art, the interactivity and the universality of power quality data are poor is solved.
Description
Technical field
The present invention relates to power domain, in particular to a kind of electric energy quality monitoring method and device.
Background technology
Along with consumer is more and more higher to the requirement of the quality of power supply, electric energy quality monitoring has become the pith of intelligent substation monitoring.But digital transformer substation becomes the trend of supervisory control of substation development in recent years at present, the digital transformer substation system that the IEC61850 of take is standard is ripe gradually, but in IEC61850, do not cover the field of Power Quality Detection, thereby affected the use of electric energy quality monitoring in IEC61850 digital transformer substation, caused the afunction of electric energy quality monitoring in transformer station.
In order to address the above problem, current solution is in existing digital transformer substation, the independent equipment for monitoring power quality of stand-alone development gathers, processes and uploads, not only cannot use the data transfer mode of digital transformer substation integral body, cause duplicate construction, and due to the data layout of each producer with upload form and all there are differences, for follow-up data processing and plant maintenance have caused difficulty.
For the poor problem of power quality data interactivity and versatility in electric energy quality monitoring method in prior art, effective solution is not yet proposed at present.
Summary of the invention
The present invention aims to provide a kind of electric energy quality monitoring method and device, to solve power quality data interactivity and the poor problem of versatility in prior art.
To achieve these goals, according to an aspect of the present invention, provide a kind of electric energy quality monitoring method.
Electric energy quality monitoring method provided by the invention comprises: the voltage and current that gathers monitoring point in transformer station; According to voltage and current, calculate the power quality data of monitoring point; Power quality data is stored in default power quality data information model; The power quality data of preserving in manufacture message mapping output power quality data information model by Abstract Common Service Interface.
Further, power quality data being stored into default power quality data information model comprises: according to the type of power quality data, power quality data is saved in respectively under the corresponding model node in power quality data information model.
Further, above-mentioned power quality data information model comprises following at least one model node: measure logic node, statistical function node, the uneven logic node of phase sequence, harmonic wave and a harmonic wave logic node, flickering logic node, voltage swell and fall temporarily logic node, current fluctuation node.
Further, also preserve the annotation of power quality data in above-mentioned model node, the annotation of this power quality data is used the structuring control language of IEC61850 regulation and stipulation to describe.
Further, the power quality data of preserving in the manufacture message mapping output power quality data information model by Abstract Common Service Interface comprises: obtain data calling instruction; The power quality data of preserving in manufacture message mapping output power quality data information model according to data calling instruction by Abstract Common Service Interface.
Further, the power quality data of preserving in the manufacture message mapping output power quality data information model by Abstract Common Service Interface can also comprise: obtain timing parameters; The power quality data of preserving in manufacture message mapping output power quality data information model according to timing parameters by Abstract Common Service Interface.
Further, after power quality data being stored in default power quality data information model, also comprise: judgement power quality data is within the scope of default value; When power quality data exceeds default value scope, generate journal file and preserve.
Further, generating journal file also preserves and comprises: the anomalous event type occurring according to the type judgement that exceeds the power quality data of default value scope; According to power quality data and anomalous event type, generate journal file, and preserve.
According to a further aspect in the invention, provide a kind of equipment for monitoring power quality.
Equipment for monitoring power quality provided by the invention, comprising: acquisition module, for gathering the voltage and current of monitoring point in transformer station; Computing module, for calculating the power quality data of monitoring point according to voltage and current; Memory module, for storing power quality data into default power quality data information model; Output module, for the power quality data of preserving in the manufacture message mapping output power quality data information model by Abstract Common Service Interface.
Further, equipment for monitoring power quality provided by the invention also comprises: judge module, for judging that power quality data is within the scope of default value; Daily record generation module, when exceeding default value scope when power quality data, generates journal file and preserves.
Apply technical scheme of the present invention, electric energy quality monitoring method comprises: the voltage and current that gathers monitoring point in transformer station; According to voltage and current, calculate the power quality data of monitoring point; Power quality data is stored in default power quality data information model; The power quality data of preserving in manufacture message mapping output power quality data information model by Abstract Common Service Interface.Utilize the versatility of the consistance assurance power quality data of power quality data information model, the above power quality data of manufacture message mapping output by Abstract Common Service Interface has solved the contradiction between communications protocol stability and extendability simultaneously, guaranteed the interactivity between the equipment for monitoring power quality data of different manufacturers, when guaranteeing following extendability, realize to greatest extent the integrated of different monitoring devices.
Accompanying drawing explanation
The Figure of description that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the schematic diagram of the equipment for monitoring power quality of the embodiment of the present invention;
Fig. 2 is according to the schematic diagram of the electric energy quality monitoring method of the embodiment of the present invention;
Fig. 3 is according to the schematic diagram of quality of power supply model node type in the electric energy quality monitoring method of the embodiment of the present invention.
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
The embodiment of the present invention provides a kind of equipment for monitoring power quality, Fig. 1 is according to the schematic diagram of the equipment for monitoring power quality of the embodiment of the present invention, as shown in Figure 1, the equipment for monitoring power quality of the embodiment of the present invention comprises: acquisition module 11, for gathering the voltage and current of monitoring point in transformer station; Computing module 13, for calculating the power quality data of monitoring point according to voltage and current; Memory module 15, for storing power quality data into default power quality data information model; Output module 17, for the power quality data of preserving in the manufacture message mapping output power quality data information model by Abstract Common Service Interface.
The voltage and current of the equipment for monitoring power quality Real-Time Monitoring monitoring point of the embodiment of the present invention, and calculate thus every power quality data, and store according to default data model, utilize the versatility of the consistance assurance power quality data of power quality data information model, the above power quality data of manufacture message mapping output by Abstract Common Service Interface has solved the contradiction between communications protocol stability and extendability simultaneously, guaranteed the interactivity between the equipment for monitoring power quality data of different manufacturers, when guaranteeing following extendability, realize to greatest extent the integrated of different monitoring devices.
Wherein, above-mentioned power quality data information model can adopt the committee draft version of 61850 quality of power supply appendix to set up, and expand and optimize according to the feature of the quality of power supply of China, adopt OO data self-described, the self-description of save data itself in data model, and time with oneself, illustrate in transmission, do not need data to carry out the work such as the correspondence of gongwu amount and scale conversion.Thereby according to unified IEC61850 standard, guarantee the consistance of power quality data information model.
The job step of memory module 15 is specifically as follows: according to the type of power quality data, power quality data is saved in respectively under the corresponding model node in power quality data information model.Wherein, this power quality data information model comprises following at least one model node: measure logic node (MMXU), statistical function node (MSTA), the uneven logic node (MSQI) of phase sequence, harmonic wave and a harmonic wave logic node (MHAI), flickering logic node (MFLK), node (QVVR) falls in voltage swell temporarily, current fluctuation node (QIVR).Each model node, on the basis of IEC61850 standard, is optimized according to user's actual demand.
In model node, preserve the annotation of power quality data, the annotation of power quality data is used the structuring control language (SCL) of IEC61850 regulation and stipulation to describe, to realize the self-described of data.This model node has comprised that data, data details are described and data attribute is described.
Output module 17 adopts OO technology and is independent of the abstract communication service interface (ACSI) of network structure, and ACSI is mapped to application layer services manufacture message specification (MMS), the application service obtaining to realize mapping, transmits data and control information.Particularly, communication system Shang Dui transformer station internal information is used hierarchy, from physical concept or logical concept is all like this, between each layer, definition has interface clearly, this layering is set up an abstract model in application layer by Abstract Common Service Interface (ACSI), describe the exchanges data between each interface, provided the various unified logical models to picture.By ACSI, by private communication service mapping (SCSM), be mapped to concrete protocol stack and manufacture message specification (MMS).When adopting IEC61850 standard, use ACSI and SCSM technology, solved the stability of standard and the contradiction between future network technical development.The device that meets IEC61850 standard has very strong interoperability, and a plurality of equipment of same producer or different manufacturers have exchange message and use these information to carry out crew-served ability.The interoperability of equipment has been protected the original software and hardware investment of user to greatest extent, realizes different manufacturers product integrated.
The data output mode of output module 17 has multiple, comprising:
Arq mode in calling, obtains data calling instruction; The power quality data of preserving in manufacture message mapping output power quality data information model according to data calling instruction by Abstract Common Service Interface.
Arq mode in timing, obtains timing parameters; The power quality data of preserving in manufacture message mapping output power quality data information model according to timing parameters by Abstract Common Service Interface.
The equipment for monitoring power quality of the embodiment of the present invention can also comprise: judge module, for judging that described power quality data is within the scope of default value; Daily record generation module, for when described power quality data exceeds default value scope, generates journal file and preserves.The concrete step that generates daily record can be: the anomalous event type occurring according to the type judgement that exceeds the power quality data of default value scope; According to power quality data and anomalous event type generate journal file, and preserve.
The hardware platform of the equipment for monitoring power quality of the embodiment of the present invention is used integrated
cortex
tM-A8 kernel, TMS320C64x+
tMthe one chip OMAP3530 of DSP kernel, operating system is used Wince.Operation report service send on can be in real time, send on regularly, call and the mode such as send to upload real time data, comprises electric current and voltage and real-time waveform etc.Log pattern is mainly used in the storage of historical data, and the inquiry of historical data of customer in response end comprises record waveform data when statistics, event and event occur with recovery.
The embodiment of the present invention also provides a kind of electric energy quality monitoring method, and any equipment for monitoring power quality that this kind of electric energy quality monitoring method can provide by the above embodiment of the present invention is carried out.Fig. 2 is according to the schematic diagram of the electric energy quality monitoring method of the embodiment of the present invention, and as shown in Figure 2, the electric energy quality monitoring method of the embodiment of the present invention comprises:
Step S21, the voltage and current of monitoring point in collection transformer station;
Step S23, calculates the power quality data of monitoring point according to voltage and current;
Step S25, stores power quality data in default power quality data information model into;
Step S27, the power quality data of preserving in the manufacture message mapping output power quality data information model by Abstract Common Service Interface.
Wherein, in step S25, power quality data being stored into default power quality data information model comprises: according to the type of power quality data, power quality data is saved in respectively under the corresponding model node in power quality data information model.
Above-mentioned power quality data information model comprises following at least one model node: measure logic node (MMXU), statistical function node (MSTA), the uneven logic node (MSQI) of phase sequence, harmonic wave and a harmonic wave logic node (MHAI), flickering logic node (MFLK), node (QVVR) falls in voltage swell temporarily, current fluctuation node (QIVR).Each model node, on the basis of IEC61850 standard, is optimized according to user's actual demand.
Fig. 3 is according to the schematic diagram of quality of power supply model node type in the electric energy quality monitoring method of the embodiment of the present invention, as shown in the figure, measure logic node (MMXU) and comprised basic electrical energy parameter data, the uneven logic node of phase sequence (MSQI) has comprised order component and unbalanced data, harmonic wave and a harmonic wave logic node (MHAI) have comprised harmonic wave and a harmonic data, flickering logic node (MFLK) has comprised flickering data, frequency logic node (QFVR) has comprised deviation data, voltage transient variation node (QVTR) has comprised voltage transient variation data, Voltage unbalance node (QVUB) has comprised current imbalance data, current imbalance node (QIUB) has comprised current imbalance data, voltage swell falls temporarily node (QVVR) and has comprised variation in voltage data.Above data all calculate by quality of power supply algorithm by gathering voltage and current situation, and are saved in respectively in corresponding node according to the type of data.
Table 1 to table 9 is detailed bills of above logic node data attribute, and wherein partial data does not have in IEC61850 quality of power supply appendix draft, has passed through inventor's optimization.
Table 1 fundamental measurement logic node (MMXU)
| Attribute-name | Attribute type | Annotation | T | M/O |
| TotW | MV_0 | Total active-power P | O | |
| TotVAr | MV_0 | Total reactive power Q | O | |
| TotVA | MV_0 | Total applied power S | O | |
| TotPF | MV_0 | Average power factor PF | O | |
| HZ | MV_0 | Frequency | O | |
| PPV | DEL_0 | Line voltage | O | |
| PhV | WYE_0 | Phase voltage | O | |
| A | WYE_0 | Phase current | O | |
| W | WYE_0 | Single-phase active-power P | O | |
| Var | WYE_0 | Single-phase reactive power Q | O | |
| VA | WYE_0 | Single-phase applied power S | O | |
| PF | WYE_0 | Single-phase power factor | O | |
| WaveV | WAVE_0 | A, B, C three-phase voltage real-time waveform (10 cycles) | O | |
| WaveA | WAVE_0 | A, B, C three-phase current real-time waveform (10 cycles) | O |
Table 2 order component and uneven logic node (MSQI)
| Attribute-name | Attribute type | Annotation | T | M/O |
| SeqA | SEQ_0 | Positive sequence, negative phase-sequence, zero-sequence current | O | |
| SeqV | SEQ_0 | Positive sequence, negative phase-sequence, residual voltage | O | |
| ImbA | WYE_0 | Out-of-balance current | O | |
| ImbNgA | MV_0 | Uneven negative-sequence current | O | |
| ImbNgV | MV_0 | Uneven negative sequence voltage | O | |
| ImbPPV | DEL_0 | Unbalanced line voltage | O | |
| ImbV | WYE_0 | Unbalance voltage | O | |
| ImbZroA | MV_0 | Uneven zero-sequence current | O | |
| ImbZroV | MV_0 | Uneven residual voltage | O | |
| MaxImbA | MV_0 | Maximum imbalance current | O | |
| MaxImbPPV | MV_0 | Maximum unbalanced line voltage | O | |
| MaxImbV | MV_0 | Maximum unbalance voltage | O | |
| ImbFacV | MV_0 | Imbalance of three-phase voltage degree | O | |
| ImbFacA | MV_0 | Three-phase current unbalance degree | O | |
| ImbV | ASG_0 | The out-of-limit value of voltage deviation | O |
| ImbVoV | ASG_0 | The out-of-limit value of Voltage unbalance degree | O | |
| ImbVoA | ASG_0 | The out-of-limit value of current unbalance factor | O |
Table 3 flicker measurement node (MFLK)
| PPPst | DEL_0 | Ask mutually the Short Term Flicker value at a perfect measurement interval | O | |
| PhPst | WYE_0 | Relatively go up the Short Term Flicker value at a perfect measurement interval | O | |
| PPPlt | DEL_0 | Flickering value while asking mutually a perfect measurement interval long | O | |
| PhPlt | WYE_0 | Flickering value while relatively going up a perfect measurement interval long | O | |
| SFOfl | ASG_0 | The out-of-limit value of Short Term Flicker | O | |
| LFOkfl | ASG_0 | The out-of-limit value of flickering when long | O |
Table 4 frequency variation node (QFVR)
Table 5 Voltage unbalance change node (QVUB)
Table 6 current imbalance node (QIUB)
Table 7 voltage transient node (QVTR)
Table 8 current transients node (QITR)
Table 9 public data node (WAVE_0)
Preferably, also preserve the annotation of power quality data in model node, the annotation of power quality data is used the structuring control language (SCL) of IEC61850 regulation and stipulation to describe.By the annotation of the data in node, data,, the details of data is described and data attribute is described the self-described that has realized data, be that the versatility of data improves greatly.
The data output mode of exporting the above-mentioned quality of power supply has multiple, comprising:
Arq mode in calling, step S27 specifically can comprise: obtain data calling instruction; The power quality data of preserving in manufacture message mapping output power quality data information model according to data calling instruction by Abstract Common Service Interface.The real needs to data that can comprise user in data callings instruction, comprise the time, type, statistics of data etc.
Arq mode in timing, step S27 specifically can comprise: obtain timing parameters; The power quality data of preserving in manufacture message mapping output power quality data information model according to timing parameters by Abstract Common Service Interface.Upload the data to the senior application platform of data, for follow-up data, use data basis is provided.
After step S27, can also comprise: judgement power quality data is within the scope of default value; When power quality data exceeds default value scope, generate journal file and preserve.Thereby preserve the situation that power quality data does not meet the demands.The step that wherein generates journal file and preserve is specifically as follows: the anomalous event type occurring according to the type judgement that exceeds the power quality data of default value scope; According to power quality data and anomalous event type generate journal file, and preserve.
Apply technical scheme of the present invention, electric energy quality monitoring method comprises: the voltage and current that gathers monitoring point in transformer station; According to voltage and current, calculate the power quality data of monitoring point; Power quality data is stored in default power quality data information model; The power quality data of preserving in manufacture message mapping output power quality data information model by Abstract Common Service Interface.Utilize the versatility of the consistance assurance power quality data of power quality data information model, the above power quality data of manufacture message mapping output by Abstract Common Service Interface has solved the contradiction between communications protocol stability and extendability simultaneously, guaranteed the interactivity between the equipment for monitoring power quality data of different manufacturers, when guaranteeing following extendability, realize to greatest extent the integrated of different monitoring devices.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in memory storage and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. an electric energy quality monitoring method, is characterized in that, comprising:
Gather the voltage and current of monitoring point in transformer station;
According to described voltage and current, calculate the power quality data of described monitoring point;
Described power quality data is stored in default power quality data information model;
The power quality data of preserving in the described power quality data information model of manufacture message mapping output by Abstract Common Service Interface.
2. electric energy quality monitoring method according to claim 1, is characterized in that, stores described power quality data into default power quality data information model and comprises:
According to the type of described power quality data, described power quality data is saved in respectively under the corresponding model node in described power quality data information model.
3. electric energy quality monitoring method according to claim 2, it is characterized in that, described power quality data information model comprises following at least one model node: measure logic node, statistical function node, the uneven logic node of phase sequence, harmonic wave and a harmonic wave logic node, flickering logic node, voltage swell and fall temporarily logic node, current fluctuation node.
4. electric energy quality monitoring method according to claim 3, is characterized in that, also preserves the annotation of described power quality data in described model node, and the annotation of described power quality data is used the structuring control language of IEC61850 regulation and stipulation to describe.
5. electric energy quality monitoring method according to claim 1, is characterized in that, the power quality data of preserving in the described power quality data information model of manufacture message mapping output by Abstract Common Service Interface comprises:
Obtain data calling instruction;
The power quality data of preserving in the described power quality data information model of manufacture message mapping output according to described data calling instruction by Abstract Common Service Interface.
6. electric energy quality monitoring method according to claim 1, is characterized in that, the power quality data of preserving in the described power quality data information model of manufacture message mapping output by Abstract Common Service Interface comprises:
Obtain timing parameters;
The power quality data of preserving in the described power quality data information model of manufacture message mapping output according to described timing parameters by Abstract Common Service Interface.
7. electric energy quality monitoring method according to claim 1, is characterized in that, described power quality data is stored in default power quality data information model and also comprised afterwards:
Judge that described power quality data is within the scope of default value;
When described power quality data exceeds default value scope, generate journal file and preserve.
8. electric energy quality monitoring method according to claim 7, is characterized in that, generates journal file and preserve to comprise:
The anomalous event type occurring according to the type judgement that exceeds the described power quality data of default value scope;
According to described power quality data and described anomalous event type, generate journal file, and preserve.
9. an equipment for monitoring power quality, is characterized in that, comprising:
Acquisition module, for gathering the voltage and current of monitoring point in transformer station;
Computing module, for calculating the power quality data of described monitoring point according to described voltage and current;
Memory module, for storing described power quality data into default power quality data information model;
Output module, for the power quality data of preserving in the described power quality data information model of manufacture message mapping output by Abstract Common Service Interface.
10. equipment for monitoring power quality according to claim 9, is characterized in that, also comprises:
Judge module, for judging that described power quality data is within the scope of default value;
Daily record generation module, for when described power quality data exceeds default value scope, generates journal file and preserves.
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| CN104914326A (en) * | 2015-04-30 | 2015-09-16 | 许继集团有限公司 | Electric energy quality on-line monitoring method and device |
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Application publication date: 20140115 |