CN203825119U - Portable intelligent substation integrated power quality testing device - Google Patents
Portable intelligent substation integrated power quality testing device Download PDFInfo
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- CN203825119U CN203825119U CN201420212920.5U CN201420212920U CN203825119U CN 203825119 U CN203825119 U CN 203825119U CN 201420212920 U CN201420212920 U CN 201420212920U CN 203825119 U CN203825119 U CN 203825119U
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Abstract
The utility model relates to a portable intelligent substation integrated power quality testing device including an optical digital signal interface, a signal pass-through forwarding control module, an optical digital signal encoding and decoding module, a power quality event simulation module, a power quality index calculation module and a human-computer interaction module. An intelligent substation merging unit or a switch can be connected to monitor the power quality index at an SV sampling value channel, an SV sampling value can also be outputted to simulate a power quality event, the organic combination of an IEC61850 specification system with power quality is achieved, and a fast and efficient means of testing is provided for intelligent power grid power quality monitoring, power quality event simulation and power quality monitoring device calibration.
Description
Technical field
The utility model relates to electric energy quality test field, is specifically related to a kind of portable comprehensive electric energy quality test device that adapts to intelligent substation.
Background technology
Tradition electric energy quality for substation monitoring device directly accesses electromagnetic potential, Current Transformer Secondary signal, is converted to digital signal, thereby calculates power quality index through installing inner voltage/current transducer, signal conditioning circuit, A/D change-over circuit; Different manufacturers is larger in the otherness of the aspects such as signal condition, sampling rate, computing method.Meanwhile, traditional electric energy quality for substation regular visit, special detection or sampling observation temporarily, generally adopt pincerlike current sensor indirectly to access current return, and measuring accuracy is limited.In addition, equipment for monitoring power quality inspection is complicated, need to configure numerous calibration equipments according to different content measurements, as normal voltage/current source, harmonic source, standard harmonic measuring and analysing meter, flickering signal generator, standard flickermeter etc., round of visits is long, and cost is high.
Intelligent substation has welcome fast-developing period, use once large voltage of electric mutual inductor or traditional electromagnetic transformer, large current transformation is small voltage, little electric current, realize voltage by merge cells equal interval sampling, the digitizing of current signal, by fiber medium, point-to-point or networking is transferred to protection, observing and controlling, metering, the IED equipment such as electric energy quality monitoring, realize the unification of distinct device Data Source, for electric energy quality monitoring demand, regulation in " DL/T282-2012 merge cells technical conditions ", the sampling rate of exporting to power quality analysis device is at least 12.8kHz.Due to the difference of interface, Data Source, and the variation of sample mode, traditional electric energy quality monitoring and proving installation cannot use in intelligent substation, and intelligent substation electric energy quality monitoring lacks a kind of Validity Test means.The feature of the intellectuality of intelligent substation primary equipment and secondary device networking has been brought new opportunity and variation to electric energy quality test and inspection.Due to digitizing, the unification of data source and the networking of secondary device of voltage/current, intelligent substation quality of power supply on-line monitoring, regular visit, sampling observation, without directly accessing current return, can realize " plug and play " in process-level network; Under intelligent substation system, it is efficient, quick and intelligent that the functional check of electric energy quality test device can become in theory, in theory without configuration multiple traditional standard source and special calibration equipment.Electric energy quality test and inspection towards intelligent substation are new research directions, how realize convenient test, the inspection of the intelligent substation quality of power supply in conjunction with IEC61850 stipulations, model system, monitoring to the intelligent grid quality of power supply and improvement, have important practical significance and economic implications.
Summary of the invention
For solving the problems of the technologies described above, the utility model provides a kind of portable intelligent transformer station comprehensive electric energy quality proving installation, comprise and be convenient to hand-held housing, in described housing, be provided with straight-through control module, light digital signal encoding and decoder module, quality of power supply event simulation module, power quality index computing module, the human-computer interaction module of forwarding of the light digital signal interface, the signal that connect in turn; Wherein,
Described smooth digital signal interface comprises at least 2 pairs of the 1st class light digital signal interfaces, at least 2 pairs of the 2nd class light digital signal interfaces and at least 1 the 3rd class light digital signal interface; Described the 1st class light digital signal interface be for receive with send IEC61850-9-2SV sampling value message, receive IEEE1588PTP to time message luminiferous ether network interface; Described the 2nd class light digital signal interface is for receiving and the light serial ports that sends IEC60044-8 standard FT3 signal, state net spread F T3 signal, electric mutual inductor collector signal; Described the 3rd class light digital signal interface be for receive light IRIG-B/PPS to time signal light serial ports;
The straight-through control module that forwards of described signal connects described smooth digital signal interface and described smooth digital signal encoding and decoder module, controls the routing direction of synchronizeing of signal between described smooth digital signal interface and described smooth digital signal encoding and decoder module;
Described smooth digital signal encoding and decoder module comprise at least 2 the 1st class light digital signal encodings and decoder module, at least 2 the 2nd class light digital signal encodings and decoder module, at least 1 the 3rd class light digital signal decoding module; Described the 1st class light digital signal encoding and decoder module and the corresponding setting of described the 1st class light digital signal interface, described the 2nd class light digital signal encoding and decoder module and the corresponding setting of described the 2nd class light digital signal interface, described the 3rd class light digital signal encoding and decoder module and the corresponding setting of described the 3rd class light digital signal interface;
Described quality of power supply event simulation module comprises that electric current and voltage calculates output module, harmonic wave and a Harmonics Calculation output module, output module, three-phase imbalance calculating output module, voltage transient calculating output module are calculated in voltage fluctuation;
Described power quality index computing module comprises that voltage deviation computing module, frequency departure calculate module, harmonic wave and a Harmonics Calculation module, voltage fluctuation and flicker computing module, tri-phase unbalance factor computing module, voltage transient computing module;
Described human-computer interaction module comprises button, liquid crystal display, the importing of SCD file and parsing module, power management module.
In described technical scheme, described SCD file imports with parsing module and comprises SD card interface and SCD document analysis module, and the IEC61850-9-2SV data stream of the 1st class light digital signal interface is automatically corresponding with intelligent substation interval; Described power management module comprises charging inlet, management of charging and discharging module and lithium battery.
In described technical scheme, described housing is cuboid substantially, and described the 1st class light digital signal interface, described the 2nd class light digital signal interface, described the 3rd class light digital signal interface are set in turn in described housing top; Described SD card interface and charging inlet are arranged at described housing side; Described button and liquid crystal display are arranged at described housing front.
In described technical scheme, described voltage fluctuation calculate output module to voltage channel included in the data stream of the 1st selected class light digital signal interface, the 2nd class light digital signal interface according to the change in voltage frequency specifying in IEC61000-4-15, undulate quantity calculating voltage data;
In described technical scheme, described voltage transient calculate output module to voltage channel included in the data stream of the 1st selected class light digital signal interface, the 2nd class light digital signal interface according to duration, voltage magnitude, damping time constant calculating voltage data.
In described technical scheme, described the 1st class light digital signal interface, the 2nd class light digital signal interface output packet under the control of human-computer interaction module contains the data of the stack of one or more in output stream in described quality of power supply event simulation module.
The utility model has been obtained following technique effect:
(1) development of adaptation intelligent substation, can directly access merge cells or process layer switch, enters
The test of row power quality index;
(2) can simulate quality of power supply event, single device or networking be verification equipment for monitoring power quality in batches;
(3) can realize light digital signal serial connection and intercept, be convenient to realize quality of power supply Simultaneous Monitoring and comparative analysis.
Portable electric energy quality comprehensive proving installation described in the utility model adopts handheld structure design, operates easy to carryly, on-the-spot adaptable, can significantly improve intelligent substation electric energy quality test and verification efficiency.
Brief description of the drawings
Fig. 1 is apparatus structure schematic diagram in the utility model embodiment;
Fig. 2 is light digital signal interface composition schematic diagram in Fig. 1;
Fig. 3 is the straight-through control module signal flow diagram that forwards of signal in Fig. 1;
Fig. 4 is light digital signal encoding and decoder module structural representation in Fig. 1;
Fig. 5 is human-computer interaction module structural representation in Fig. 1;
Fig. 6 A and Fig. 6 B are the utility model schematic appearance in specific embodiment;
Fig. 7 is the utility model wiring schematic diagram while carrying out electric energy quality test;
Fig. 8 is the utility model wiring schematic diagram while carrying out equipment for monitoring power quality verification.
Mark in figure: 1-light digital signal interface; The straight-through control module that forwards of 2-signal; 3-light digital signal encoding and decoder module; 4-quality of power supply event simulation module; 5-power quality index computing module; 6-human-computer interaction module; 10-the 1st class light digital signal interface; 11-the 2nd class light digital signal interface; 12-the 3rd class light digital signal interface; 30-the 1st class light digital signal encoding and decoder module; 31-the 2nd class light digital signal encoding and decoder module; 32-the 3rd class light digital signal decoding module; 60-button; 61-liquid crystal display; 62-SCD file imports and parsing module; 63-power management module; 621-SD card interface; 622-SCD document analysis module; 631-charging inlet; 632-management of charging and discharging module; 633-lithium battery.
Embodiment
Understand and implement the utility model for the ease of those of ordinary skill in the art, below in conjunction with the drawings and the specific embodiments, the utility model being described in further detail.
The utility model provides a kind of portable intelligent transformer station comprehensive electric energy quality proving installation, and as shown in Figure 1, this proving installation comprises:
Straight-through control module 2, light digital signal encoding and decoder module 3, quality of power supply event simulation module 4, power quality index computing module 5, the human-computer interaction module 6 of forwarding of light digital signal interface 1, signal connecting in turn, as shown in Figure 1.
Light digital signal interface 1, comprises the 1st class light digital signal interface the 10, the 2nd class light digital signal interface the 11, the 3rd class light digital signal interface 12, as shown in Figure 2.Wherein the 1st class light digital signal interface 10 is luminiferous ether network interface, and at least 2 pairs of interface quantity can be ST interface, LC interface in concrete enforcement, for receive with send IEC61850-9-2SV sampling value message, receive IEEE1588PTP to time message; The 2nd class light digital signal interface is light serial ports 11, and at least 2 pairs of interface quantity, are generally ST interface, for receiving and sending IEC60044-8 standard FT3 signal, state net spread F T3 signal, electric mutual inductor collector signal; The 3rd class light digital signal interface 12 is that 1 dedicated optical IRIG-B/PPS signal receives light serial ports, interface shape: ST interface, for to the utility model device to time.
The straight-through control module 2 that forwards of signal, intercepts for realizing signal serial connection, realizes quality of power supply Simultaneous Monitoring and comparative analysis, carries out by following two kinds of patterns according to instruction control the 1st class of human-computer interaction module 6, the 2nd class light digital signal interface data stream:
(1) light digital signal interface data stream only passes straight through to light digital signal encoding and decoder module, does not carry out
Serial connection is intercepted, taking the 1st class light digital signal as example, as shown in signal direct mode operation in Fig. 3.
(2) light digital signal interface data stream is except passing straight through to light digital signal encoding and decoder module, synchronously be forwarded to selected other light digital signal interfaces of the same type of human-computer interaction module 6 instructions, conveniently SV sampled value data stream is connected in series and is intercepted, realize quality of power supply Simultaneous Monitoring and comparative analysis, taking the 1st class light digital signal as example, as shown in signal forward mode in Fig. 3.
Light digital signal encoding and decoder module 3, corresponding with light digital signal interface 1 type and quantity, comprise the 1st class light digital signal encoding and decoder module 30, the 2nd class light digital signal encoding and decoder module 31, the 3rd class light digital signal decoding module 32, as shown in Figure 4.
Quality of power supply event simulation module 4, formed by hardware circuit, at least comprise that electric current and voltage calculates output module, harmonic wave and a Harmonics Calculation output module, output module, three-phase imbalance calculating output module, voltage transient calculating output module are calculated in voltage fluctuation, for export one or more stack of above-mentioned calculating output module data stream according to instruction control the 1st class of human-computer interaction module 6, the 2nd class light digital signal interface, for simulating the quality of power supply event of Various Complex.
Preferably, output module is calculated in voltage fluctuation, according to the instruction of human-computer interaction module 6, the included voltage channel of selected the 1st class, the 2nd class light digital signal interface data stream is calculated the voltage data stream of square wave or sine wave modulation according to the change in voltage frequency specifying in IEC61000-4-15, undulate quantity.
Preferably, described voltage transient calculates output module, according to the instruction of human-computer interaction module 6 to the included voltage channel of selected the 1st class, the 2nd class light digital signal interface data stream according to duration, voltage magnitude, damping time constant calculating voltage data stream.
Power quality index computing module 5, formed by hardware circuit, comprise that voltage deviation computing module, frequency departure calculate module, harmonic wave and a Harmonics Calculation module, voltage fluctuation and flicker computing module, tri-phase unbalance factor computing module, voltage transient computing module, in specific implementation process, for the feature of intelligent substation equal interval sampling, proportion compensation method calculates equal interval sampling SV signal frequency, carry out hardware or software frequency-tracking and resampling, and then adopt fft circuit or algorithm to calculate power quality index.
Preferably, voltage transient computing module calculating voltage changes amplitude, duration, and according to change in voltage amplitude and duration length mark voltage swell, voltage dip, transient voltage events.
Preferably, the result of above-mentioned computing module shows in human-computer interaction module 6.
Human-computer interaction module 6, comprises that button 60, liquid crystal display 61, SCD file import and parsing module 62, power management module 63, as shown in Figure 5.
Preferably, SCD file imports and parsing module, comprise SD card interface 621 and SCD document analysis module 622, for importing intelligent substation SCD configuration file and resolving, the IEC61850-9-2SV data stream of the 1st class light digital signal interface 10 is automatically corresponding with intelligent substation interval.
Preferably, power management module comprises charging inlet 631, management of charging and discharging module 632 and lithium battery 633.
In the utility model embodiment, also comprise and be convenient to the hand-held housing that is substantially cuboid, housing top is disposed with described the 1st class light digital signal interface 10, described the 2nd class light digital signal interface 11, described the 3rd class light digital signal interface 12; Housing side is provided with described SD card interface 621 and charging inlet 631; Housing front is provided with button 60 and liquid crystal display 61, as shown in Figure 6 A and 6 B.
The utility model is in specifically practicing, can be through the 1st class light digital signal interface access merge cells, or receive IEC61850-9-2SV sampled value via process layer switch, also can receive merge cells standard FT3, state net spread F T3 form SV sampled value through the 2nd class light digital signal interface, or directly receive electric mutual inductor collector signal, carry out electric energy quality monitoring, flexible, as shown in Figure 7.
The utility model is in specifically practicing, can be by shown in (1), equipment for monitoring power quality being carried out to verification in Fig. 8, or show and carry out electric energy quality monitoring comparative analysis by side shown in (2) in Fig. 8, in figure, light digital signal interface can be the 1st class light digital signal interface, also the 2nd class light digital signal interface.
Above embodiment is only a kind of embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.Its concrete structure, size, outward appearance layout can be adjusted according to actual needs accordingly.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (6)
1. a portable intelligent transformer station comprehensive electric energy quality proving installation, comprise and be convenient to hand-held housing, it is characterized in that: in described housing, be provided with straight-through control module, light digital signal encoding and decoder module, quality of power supply event simulation module, power quality index computing module, the human-computer interaction module of forwarding of the light digital signal interface, the signal that connect in turn; Wherein,
Described smooth digital signal interface comprises at least 2 pairs of the 1st class light digital signal interfaces, at least 2 pairs of the 2nd class light digital signal interfaces and at least 1 the 3rd class light digital signal interface; Described the 1st class light digital signal interface be for receive with send IEC61850-9-2SV sampling value message, receive IEEE1588PTP to time message luminiferous ether network interface; Described the 2nd class light digital signal interface is for receiving and the light serial ports that sends IEC60044-8 standard FT3 signal, state net spread F T3 signal, electric mutual inductor collector signal; Described the 3rd class light digital signal interface be for receive light IRIG-B/PPS to time signal light serial ports;
The straight-through control module that forwards of described signal connects described smooth digital signal interface and described smooth digital signal encoding and decoder module, controls the routing direction of synchronizeing of signal between described smooth digital signal interface and described smooth digital signal encoding and decoder module;
Described smooth digital signal encoding and decoder module comprise at least 2 the 1st class light digital signal encodings and decoder module, at least 2 the 2nd class light digital signal encodings and decoder module, at least 1 the 3rd class light digital signal decoding module; Described the 1st class light digital signal encoding and decoder module and the corresponding setting of described the 1st class light digital signal interface, described the 2nd class light digital signal encoding and decoder module and the corresponding setting of described the 2nd class light digital signal interface, described the 3rd class light digital signal encoding and decoder module and the corresponding setting of described the 3rd class light digital signal interface;
Described quality of power supply event simulation module comprises that electric current and voltage calculates output module, harmonic wave and a Harmonics Calculation output module, output module, three-phase imbalance calculating output module, voltage transient calculating output module are calculated in voltage fluctuation;
Described power quality index computing module comprises that voltage deviation computing module, frequency departure calculate module, harmonic wave and a Harmonics Calculation module, voltage fluctuation and flicker computing module, tri-phase unbalance factor computing module, voltage transient computing module;
Described human-computer interaction module comprises button, liquid crystal display, the importing of SCD file and parsing module, power management module.
2. portable intelligent according to claim 1 transformer station comprehensive electric energy quality proving installation, is characterized in that:
Described SCD file imports with parsing module and comprises SD card interface and SCD document analysis module, and the IEC61850-9-2SV data stream of the 1st class light digital signal interface is automatically corresponding with intelligent substation interval;
Described power management module comprises charging inlet, management of charging and discharging module and lithium battery.
3. portable intelligent according to claim 2 transformer station comprehensive electric energy quality proving installation, it is characterized in that: described housing is cuboid substantially, described the 1st class light digital signal interface, described the 2nd class light digital signal interface, described the 3rd class light digital signal interface are set in turn in described housing top; Described SD card interface and charging inlet are arranged at described housing side; Described button and liquid crystal display are arranged at described housing front.
4. portable intelligent according to claim 1 transformer station comprehensive electric energy quality proving installation, is characterized in that: described voltage fluctuation calculate output module to voltage channel included in the data stream of the 1st selected class light digital signal interface, the 2nd class light digital signal interface according to the change in voltage frequency specifying in IEC61000-4-15, undulate quantity calculating voltage data.
5. portable intelligent according to claim 1 transformer station comprehensive electric energy quality proving installation, is characterized in that: described voltage transient calculate output module to voltage channel included in the data stream of the 1st selected class light digital signal interface, the 2nd class light digital signal interface according to duration, voltage magnitude, damping time constant calculating voltage data.
6. according to the portable intelligent transformer station comprehensive electric energy quality proving installation described in claim 1-5 any one, it is characterized in that: described the 1st class light digital signal interface, the 2nd class light digital signal interface under the control of human-computer interaction module output packet containing one or more the data of stack in described quality of power supply event simulation module output stream.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337805A (en) * | 2015-11-20 | 2016-02-17 | 国家电网公司 | Portable telecommand and telemetering checking device and system for intelligent substation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337805A (en) * | 2015-11-20 | 2016-02-17 | 国家电网公司 | Portable telecommand and telemetering checking device and system for intelligent substation |
| CN105337805B (en) * | 2015-11-20 | 2019-12-13 | 国家电网公司 | Portable intelligent substation remote signaling and remote measuring calibration device and system |
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