CN102611202B - Intelligent online waveform recording system of distributing line - Google Patents
Intelligent online waveform recording system of distributing line Download PDFInfo
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- CN102611202B CN102611202B CN201210079358.9A CN201210079358A CN102611202B CN 102611202 B CN102611202 B CN 102611202B CN 201210079358 A CN201210079358 A CN 201210079358A CN 102611202 B CN102611202 B CN 102611202B
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Abstract
The invention discloses an intelligent online waveform recording system of a distributing line, which comprises three waveform collectors and a centralized processor. The three waveform collectors are respectively connected with three-phase current of the distributing line; the waveform collector comprises a current transformer, a signal processing circuit, a low-pass filter circuit, a first microprocessor and a first communication module; the first microprocessor is used for recording the present current change waveform according to current information when the first microprocessor judges that abrupt change of current of the distributing line happens according to the current information or timing is finished and sending current waveform information to the centralized processor through the first communication module; and the centralized processor performs centralized processing on the current waveform information of the three waveform collectors and obtains three-phase current information of the distributing line. By adopting the intelligent online waveform recording system, current waveform is accurately collected, abrupt change of current can be timely reported, and stable and reliable operation of the distributing line is guaranteed.
Description
Technical field
The present invention relates to technical field of power systems, relate in particular to a kind of distribution line intelligent online record wave system system.
Background technology
Distribution line record ripple detector is the important power equipment of the generation of automatic record electricity systematic failures, differentiation and normal operation situation.It not only provides scientific evidence for accident analysis, and is to find in time power system device defect and the important tool that accumulates first-hand technical information data.
At present, the following shortcoming of wave recording device ubiquity of existing distribution line: can only detect record ripple distribution line bus current situation of change, concrete branch line current conditions cannot be detected; And, fail the curent change situation of distribution line to monitor in real time, in the time of current break, fail to notify in time user to carry out analyzing and processing.
Summary of the invention
In view of the existing problem of above-mentioned prior art, the invention provides a kind of distribution line intelligent online record wave system system, current waveform collection is accurate, while there is current break, can report in time, ensures that distribution line working stability is reliable.
In order to reach above-mentioned technique effect, the invention provides a kind of distribution line intelligent online record wave system system, comprising:
Comprise: three waveform acquisition devices and focus on device;
Described three waveform acquisition devices access respectively the three-phase current of distribution line, and described waveform acquisition device comprises: current transformer, signal processing circuit, low-pass filter circuit, first microprocessor and first communication module;
Described current transformer, for gathering the current signal of distribution line, and is processed into little current signal by described current signal;
Described signal processing circuit, for being processed into the AC signal with DC component by described little current signal;
Described low-pass filter circuit, for detection of the current information in the described AC signal with DC component, and is sent to first microprocessor by described current information;
Described first microprocessor, in the time judging distribution line generation current break according to described current information, or in the time that timing finishes, records current curent change waveform according to described current information, and current waveform information is sent to first communication module;
Described first communication module, for being sent to described current waveform information to focus on device;
The described device that focuses on comprises: second communication module and the second microprocessor;
Described second communication module, the current waveform information sending for receiving described three waveform acquisition devices, and in the time receiving the current waveform information of arbitrary waveform acquisition device transmission, ask two other waveform acquisition device feedback current shape information, the current waveform information receiving is sent to the second microprocessor;
Described the second microprocessor, focuses on for the current waveform information to described three waveform acquisition devices, obtains the three-phase current information of distribution line;
Described focus on device for: calculate sudden change difference of phase currents whether reach sudden change requirement, if reached, freeze current curent change information, and require all the other two-phases to freeze simultaneously, and three-phase current information is synchronously processed, obtain the three-phase current information of described distribution line.
The distribution line intelligent online record wave system system that the embodiment of the present invention provides, has following beneficial effect:
By current transformer, signal processing circuit, low-pass filter circuit, microprocessor in distribution line intelligent online record wave system system, the three-phase current signal of distribution line is carried out to acquisition and processing, and by microprocessor, the information collecting is analyzed, can record the current current waveform information of distribution line, current waveform collection is accurate.In the time there is current break, concentrate packing to process to the current waveform information collecting, report in time distribution line Surveillance center to show in wavy curve mode, reach the effect of Intelligent Measurement and analysis management, ensure that distribution line working stability is reliable.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below.Obviously, the accompanying drawing in the following describes is only some embodiments of the present invention; For those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the first embodiment of distribution line intelligent online record wave system system provided by the invention;
Fig. 2 is the structural representation of an embodiment of waveform acquisition device provided by the invention;
Fig. 3 is the circuit diagram of an embodiment of signal processing circuit provided by the invention;
Fig. 4 is the circuit diagram of an embodiment of low-pass filter circuit provided by the invention;
Fig. 5 is the circuit diagram of an embodiment of the first low-voltage testing circuit provided by the invention;
Fig. 6 is the circuit diagram of an embodiment of the first clock circuit provided by the invention;
Fig. 7 is the structural representation of an embodiment who focuses on device provided by the invention;
Fig. 8 is the structural representation of the second embodiment of distribution line intelligent online record wave system system provided by the invention;
Fig. 9 is the structural representation of an embodiment of Surveillance center provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out to clear, complete description.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, belongs to the scope of protection of the invention.
Referring to Fig. 1, it is the structural representation of the first embodiment of distribution line intelligent online record wave system system provided by the invention.
Distribution line intelligent online that the present embodiment provides record wave system turnkey is drawn together: three waveform acquisition devices 1 and focus on device 2.Three waveform acquisition devices are respectively: waveform acquisition device A, waveform acquisition device B, waveform acquisition device C, access respectively the three-phase current of distribution line.
Referring to Fig. 2, it is the structural representation of an embodiment of waveform acquisition device provided by the invention.
The waveform acquisition device that the embodiment of the present invention provides comprises: current transformer 11, signal processing circuit 12, low-pass filter circuit 13, first microprocessor 14 and first communication module 15.Specific as follows:
Current transformer 11, for gathering the current signal of distribution line, and is processed into little current signal by current signal;
Signal processing circuit 12, for being processed into the AC signal with DC component by little current signal;
Low-pass filter circuit 13, for detection of the current information in the AC signal with DC component, and is sent to first microprocessor 14 by current information;
First microprocessor 14, in the time judging distribution line generation current break according to current information, or in the time that timing finishes, records current curent change waveform according to current information, and current waveform information is sent to first communication module 15;
First communication module 15, for being sent to current waveform information to focus on device 2.
Wherein, current transformer 11, signal processing circuit 12, low-pass filter circuit 13, first microprocessor 14 and first communication module 15 are connected successively.
Optionally, first microprocessor 14 adopts the microprocessor with 12 analog to digital converters (Analog-to-Digital Converter, ADC) sampling precision.Further, as shown in Figure 2, first microprocessor 14 specifically comprises:
Whether electric current judging unit 141, change for the electric current that judges described current information, if change, records current curent change waveform according to described current information, and current waveform information is sent to first communication module 15;
Timing judging unit 142, at the 3rd time clocking internal of time set in advance, in the time that timing finishes, records current curent change waveform according to described current information, and current waveform information is sent to first communication module 15.Optionally, the 3rd time was 1 hour, or according to actual needs can other values of free setting.
Further, as shown in Figure 2, electric current judging unit 141 specifically comprises:
The first electric current judging unit 1411, for judging whether the electric current of described current information reduces, when described electric current reduces and when the duration is the very first time setting in advance, judge described distribution line generation open fault, record current curent change waveform according to described current information, and current waveform information is sent to first communication module 15; Optionally, the very first time is 2 seconds;
The second electric current judging unit 1412, for in the time that the electric current increase of described current information and duration are the second time setting in advance, judge whether described electric current is greater than the current value setting in advance, in the time that described electric current is greater than the current value setting in advance, record current curent change waveform according to described current information, and current waveform information is sent to first communication module 15.Optionally, the second time was 20 milliseconds, and the current value setting in advance is 5A.
It should be noted that the value free setting according to actual needs of the very first time, the second time and the 3rd time.
In addition, as shown in Figure 2, the waveform acquisition device that the embodiment of the present invention provides also comprises:
The first power module 16, for providing supply voltage to described waveform acquisition device 1;
The first low-voltage testing circuit 17, for detection of the supply voltage of described waveform acquisition device 1, and is sent to first microprocessor 14 by testing result;
The first clock circuit 18, for providing the clock circuit of accurate clock signal to first microprocessor 14.
Wherein, the first low-voltage testing circuit 17 respectively with the first power modules 16, first microprocessor 14 are connected; The first clock circuit 18 is connected with first microprocessor 14.
When concrete enforcement, current transformer 11 is for gathering the current signal of distribution line, and current signal is processed into little current signal, less current signal is sent to signal processing circuit 12.Preferably, current transformer 11 is made up of the current transformer with high magnetic property, because the current ratio of the distribution line collecting is larger, cause directly gathering large current signal, so must large current signal be processed into little current signal by current transformer 11, make output amplitude and distribution line proportional in line current, output frequency equates with the online power frequency of distribution line.
Referring to Fig. 3, it is the circuit diagram of an embodiment of signal processing circuit provided by the invention.
Signal processing circuit 12 is for little current signal is processed into the AC signal with DC component, and is sent to low-pass filter circuit 13.The little current signal of exporting due to current transformer 11 is a positive and negative AC signal replacing, first microprocessor 14 cannot gather negative current waveform signal, so need signal processing circuit 12 that the positive and negative AC signal replacing (being little current signal) is processed into the AC signal with DC component.
As shown in Figure 3, signal processing circuit 12 comprises binding post J1, Transient Suppression Diode D1, resistance R 1, resistance R 2, resistance R 3, resistance R 4, capacitor C 1, capacitor C 2, operational amplifier U1A and the first power supply; Specific as follows:
The input of binding post J1 is connected with the output of current transformer, the output of binding post J1 is through Transient Suppression Diode D1 ground connection, the output of binding post J1 is through resistance R 4 ground connection, and the output of binding post J1 accesses the in-phase input end of operational amplifier U1A through capacitor C 2; One end of resistance R 1 is connected with the in-phase input end of operational amplifier U1A, and the other end of resistance R 1 is connected with the first power supply, and the other end of resistance R 1 also passes through capacitor C 1 ground connection; The positive power source terminal of operational amplifier U1A is connected with the first power supply, the negative power end ground connection of operational amplifier U1A, the in-phase input end of operational amplifier U1A is through resistance R 2 ground connection, and the inverting input of operational amplifier U1A is connected with the output of operational amplifier U1A through resistance R 3.
Optionally, as shown in Figure 3, signal processing circuit 12 also comprises capacitor C 3, and the output of binding post J1 is through capacitor C 3 ground connection.
In the middle of concrete enforcement, the little current signal that current transformer 11 is exported accesses from binding post J1, after capacitor C 2 couplings, input to operational amplifier U1A, operational amplifier U1A is on the complete basis of inhibit signal, both improved input resistance, reduce the load of current transformer 11, reduce again output resistance, increase the driving force of circuit, make input and output impedance phase coupling, improve the resolution capability of subsequent conditioning circuit to signal, and transition twin zener dioder D1 has played good protective effect to the input of operational amplifier U1A, the AC signal with DC component is after treatment from output (being 1 pin shown in Fig. 3) output of operational amplifier U1A.
Referring to Fig. 4, it is the circuit diagram of an embodiment of low-pass filter circuit provided by the invention.
Low-pass filter circuit 13 is for detection of the current information in the AC signal with DC component, and is sent to first microprocessor 14.As shown in Figure 4, low pass filter 13 comprises resistance R 5, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 1, capacitor C 4, capacitor C 5, operational amplifier U2D, diode D2, diode D3 and second source; Specific as follows:
One end of resistance R 5 is connected with the output of operational amplifier U1A, the other end of resistance R 5 is connected with the output of operational amplifier U2D through capacitor C 5, the other end of resistance R 5 is also connected with one end of resistance R 6, the other end of resistance R 6 is connected with the in-phase input end of operational amplifier U2D, and the other end of resistance R 6 also passes through capacitor C 4 ground connection; The inverting input of operational amplifier U2D is through resistance R 7 ground connection, the inverting input of operational amplifier U2D is connected with the output of operational amplifier U2D through resistance R 8, the output of operational amplifier U2D is connected with one end of resistance R 9, the other end of resistance R 9 is through capacitor C 6 ground connection, the other end of resistance R 9 is also connected with one end of resistance R 1 with the anode of diode D2, the negative terminal of diode D3 respectively, the negative terminal of diode D2 connects second source, the positive ending grounding of diode D3, the other end of resistance R 1 is as the output of low-pass filter circuit.
Optionally, as shown in Figure 4, low-pass filter circuit 13 also comprises capacitor C 6, and the anode of diode D2 is through capacitor C 6 ground connection.
When concrete enforcement, AC signal with DC component inputs to the active second-order low-pass filter being made up of amplifier from resistance R 5, filter the high fdrequency component producing due to various loads in distribution line, only the steady-state component of low frequency is processed, obtain the current information in distribution line, be then sent in first microprocessor 14.
First microprocessor 14 comprises electric current judging unit 141 and timing judging unit 142.Optionally, microprocessor 14 adopts the microprocessor with 12 analog to digital converters (Analog-to-Digital Converter, ADC) sampling precision.
Referring to Fig. 5, it is the circuit diagram of an embodiment of the first low-voltage testing circuit provided by the invention.
The first low-voltage testing circuit 17 comprises resistance R 11, resistance R 12, low pressure detection chip U3 and the 3rd power supply; Specific as follows:
One end of resistance R 11 is connected with the 3rd power supply, and the other end of resistance R 11 is connected with the input of low pressure detection chip U3, the common end grounding of low pressure detection chip U3, and the output of low pressure detection chip U3 is connected with one end of resistance R 12; The other end of resistance R 12, as the output of low-voltage testing circuit, is connected with microprocessor.The present embodiment utilizes the level function of first microprocessor 14, utilizes low pressure detection chip U3 to detect low voltage level, and inputs to the level detection pin of first microprocessor 14, and first microprocessor 14 changes to judge whether low pressure of current power supply according to level.
When concrete enforcement, above-mentioned the first power supply, second source and the 3rd power supply can be provided by the first power module 16.
Referring to Fig. 6, it is the circuit diagram of an embodiment of the first clock circuit provided by the invention.
The first clock circuit 18 is for providing accurate clock signal to first microprocessor 14, and the first clock circuit 118 comprises capacitor C 7, capacitor C 8 and crystal oscillator Y1; Specific as follows:
One end of capacitor C 7 is connected with the input of clock circuit, the other end ground connection of capacitor C 7; One end of crystal oscillator Y1 is connected with the input of clock circuit, and the other end of crystal oscillator Y1 is through capacitor C 8 ground connection, and the other end of crystal oscillator Y1 is also as the output of clock circuit.
Optionally, the first clock circuit 18 is the standard time clock circuit being made up of a crystal oscillator, for first microprocessor 14 provides the 16M clock signal of a standard, has ensured the accuracy of data acquisition.
The waveform acquisition device that the embodiment of the present invention provides, by current transformer, electric current judging unit, timing judging unit in distribution line intelligent online record wave system system, the current signal of distribution line is carried out to acquisition and processing, and by first microprocessor, the information collecting is analyzed, can record out distribution line current waveform information, and be sent to and focus on device and process by the first transport module, can notify in time user to analyze, reach Intelligent Measurement effect, gather accurately, ensure that distribution line working stability is reliable.And the volume of this distribution line intelligent online record wave system system is small and exquisite, easy for installation, is applicable to all kinds of 10kv distribution line Real-time Collection line current situations of change.
Referring to Fig. 7, it is the structural representation of an embodiment who focuses on device provided by the invention.
What the embodiment of the present invention provided focus on device comprises: second communication module 21 and the second microprocessor 22;
Second communication module 21, the current waveform information sending for receiving described three waveform acquisition devices, and in the time receiving the current waveform information of arbitrary waveform acquisition device transmission, ask two other waveform acquisition device feedback current shape information, the current waveform information receiving is sent to the second microprocessor 22;
The second microprocessor 22, focuses on for the current waveform information to described three waveform acquisition devices, obtains the three-phase current information of distribution line.
When concrete enforcement, in the time that second communication module 21 receives the current waveform information that waveform acquisition device A sends, can ask their current current waveform information of self detecting of waveform acquisition device B and waveform acquisition device C feedback; In the time that second communication module 21 receives the current waveform information that B sends, can ask their current current waveform information of self detecting of waveform acquisition device A and waveform acquisition device C feedback; In the time that second communication module 21 receives the current waveform information that waveform acquisition device C sends, can ask their current current waveform information of self detecting of waveform acquisition device A and waveform acquisition device B feedback.
In the time that arbitrary waveform acquisition device is judged distribution line generation current break, or in the time that timing finishes, freeze the current current information collecting, record current curent change waveform according to current information, and pack to be transferred to by wireless communication module and focus on device 2.Focus on device 2 and order other two waveform acquisition devices that current current information is also freezed simultaneously simultaneously, packing is transferred to and focuses on device 2.Focus on the current data that device 2 sends three waveform acquisition devices and carry out preliminary treatment, comprise and calculate phase current effective value, phase place.Be specially: calculate sudden change difference of phase currents and whether reach sudden change requirement, if reach current break requirement, freeze current curent change information, and require all the other two-phases to freeze simultaneously.After three-phase current information is synchronously processed, be reported to Surveillance center, just can carry out data analysis processing according to the three-phase current change information of passback.
Further, as shown in Figure 7, what the embodiment of the present invention provided focus on device also comprises: second source module 23, the second low-voltage testing circuit 24, pulse protection circuit 25 and second clock circuit 26.Specific as follows:
Second source module 23, for providing supply voltage to focusing on device 2; Concrete, second source module 23 is mainly made up of storage battery and solar panel, provide a stable power supply supply for focusing on device 2 field works, storage battery is the large capacity rechargeable battery of a 6V7A/h, solar panel provides solar recharging for storage battery, what use is 9V/4.5W solar charging panel, provides energy safeguard for focusing on device 2 long-term works.
The second low-voltage testing circuit 24, for detection of the supply voltage that focuses on device 2, and is sent to the second microprocessor 22 by testing result; Concrete, the second low-voltage testing circuit 24 can adopt the circuit structure of above-mentioned the first low-voltage testing circuit 17, all detects current battery low pressure information with low pressure detection chip, for circulating a notice of in time battery service condition.
Pulse protection circuit 25, is connected with the antenna end that focuses on device 2, for filtering lightning strike signals and high-voltage signal; This pulse protection circuit 25 is mainly made up of anti-thunder tube, prevents thunderbolt, and high pressure isopulse signal is on focusing on the impact of device 2.
Second clock circuit 26, for providing the clock circuit of accurate clock signal to the second microprocessor 22.Concrete, second clock circuit 26 is identical with the first clock circuit 18, and the standard time clock circuit being made up of a crystal oscillator, for the second microprocessor 22 provides the 16M clock signal of a standard, has ensured the accuracy of data operation.
Referring to Fig. 8, it is the structural representation of the second embodiment of distribution line intelligent online record wave system system provided by the invention.
The distribution line intelligent online record wave system system that the second embodiment provides, except having the waveform acquisition device 1 of above-mentioned the first embodiment and focusing on device 2, also comprises Surveillance center 3.
And, as shown in Figure 7, focus on device 2 and also comprise: the first gsm communication module 27, for converting the three-phase current information of distribution line to note data bag, and is sent to Surveillance center 3.
Surveillance center 3 is for receiving described note data bag, and the form setting in advance according to user carries out alarm prompt.
Compared with the first embodiment, the difference of the second embodiment is: after focusing on device 2 three-phase current information synchronously being processed, packing is sent to Surveillance center 3.Surveillance center 3 can carry out data analysis processing according to the three-phase current change information of passback.
The second microprocessor 22 sends to Surveillance center 3 by the first gsm communication module 27 by current waveform information, the form that Surveillance center 3 sets in advance according to user is pointed out, and the form that user sets in advance is one or several combinations in messaging format, speech play form and graphical format.
Referring to Fig. 9, it is the structural representation of an embodiment of Surveillance center provided by the invention.
The Surveillance center 3 that the present embodiment provides comprises: communication switchboard 31 and application server 32; Specific as follows:
Communication switchboard 31, for resolving described note data bag, obtains the three-phase current information of distribution line, and described three-phase current information is sent to application server 32;
Application server 32, is connected with communication switchboard 31 by RS232 interface and/or USB interface, and for according to described three-phase current information, actual distribution line being carried out to analysis management, and the form setting in advance according to user carries out alarm prompt.
Wherein, the form that user sets in advance is one or several combinations in messaging format, speech play form and graphical format.
More specifically, as shown in Figure 9, communication switchboard 31 comprises:
The second gsm communication module 311, comprises primary gsm communication module 3111 and gsm communication module 3112 for subsequent use; Described primary gsm communication module 3111 is for receiving described note data bag; Described gsm communication module 3112 for subsequent use in described primary gsm communication module 3111 when busy, receive described note data bag;
The 3rd microprocessor 312, according to current traffic size, switches the switch of primary gsm communication module 3111 and gsm communication module 3112 for subsequent use in real time;
The 3rd clock circuit 313, for providing accurate clock signal to the 3rd microprocessor 312.
Wherein, the 3rd clock circuit 313 can adopt the circuit structure of above-mentioned the first clock circuit 18.
As shown in Figure 9, application server 32 specifically comprises: setting unit 321 and statistic unit 322.
Setting unit 321 focuses on the parameter of device and the parameter of described waveform acquisition device described in arranging;
In addition, the second gsm communication module 311, focuses on device described in being also sent to for the parameter that described setting unit 321 is arranged;
The first gsm communication module 27, the parameter also sending for receiving the second gsm communication module 311, and the parameter of described waveform acquisition device is sent to described waveform acquisition device.
First communication module 15, also for receiving the parameter of described waveform acquisition device;
Statistic unit 322, for adding up the historical curent change curve of described distribution line, and shows with the form of form form and/or pictorial statement.
Concrete, the form that user sets in advance is one or several combinations in messaging format, speech play form and graphical format, if desired carry out short message prompt, system is used serial ports to connect communication switchboard, according to database data generating content comprise line name, waveform acquisition device infield, waveform acquisition device mutually number, three-phase current specifically changes waveform note, then note sent to related personnel by communication switchboard.If need carry out audio alert, opening voice playing function, is broadcasted alarm voice by sound card.If need carry out graphical cues, the actual track current waveform that shows distribution line on observation interface changes, by specific current waveform profile in monitoring center software interface display, interface display can arbitrarily show each phase current waveform information, and can change wave moulding thickness, color, display mode etc.
In sum, the distribution line intelligent online record wave system system that the embodiment of the present invention provides, by the current transformer in waveform acquisition device, current detection module, the current waveform signal of distribution line is carried out to acquisition and processing, and by first microprocessor, the information collecting is focused on, can obtain distribution line three-phase current Wave data, reach intelligence and catch detection effect.Simultaneously, by focusing on the precalculated position coding of the second microprocessor in device, judge the more specific location information of circuit waveform data, and be sent to Surveillance center, the form that Surveillance center sets in advance according to user carries out alarm prompt, for the timely analyzing and processing of user, data acquisition is accurate, ensures that distribution line working stability is reliable.
Disclosed is only several preferred embodiments of the present invention above, certainly can not limit with this interest field of the present invention.Therefore, the equivalent variations of doing according to the claims in the present invention, still belongs to the scope that the present invention is contained.
Obviously, those skilled in the art can carry out various changes and modification and not depart from technical scope of the present invention and distribution line intelligent online record ripple system configuration the present invention.Like this, if within these amendments of the present invention and modification belong to the claims in the present invention and equivalent technologies scope thereof and distribution line intelligent online record ripple system configuration, the present invention is also intended to comprise these changes and modification interior.
Claims (10)
1. distribution line intelligent online record wave system system, is characterized in that, comprising: three waveform acquisition devices and focus on device;
Described three waveform acquisition devices access respectively the three-phase current of distribution line, and described waveform acquisition device comprises: current transformer, signal processing circuit, low-pass filter circuit, first microprocessor and first communication module;
Described current transformer, for gathering the current signal of distribution line, and is processed into little current signal by described current signal;
Described signal processing circuit, for being processed into the AC signal with DC component by described little current signal;
Described low-pass filter circuit, for detection of the current information in the described AC signal with DC component, and is sent to first microprocessor by described current information;
Described first microprocessor, in the time judging distribution line generation current break according to described current information, or in the time that timing finishes, records current curent change waveform according to described current information, and current waveform information is sent to first communication module;
Described first communication module, for being sent to described current waveform information to focus on device;
The described device that focuses on comprises: second communication module and the second microprocessor;
Described second communication module, the current waveform information sending for receiving described three waveform acquisition devices, and in the time receiving the current waveform information of arbitrary waveform acquisition device transmission, ask two other waveform acquisition device feedback current shape information, the current waveform information receiving is sent to the second microprocessor;
Described the second microprocessor, focuses on for the current waveform information to described three waveform acquisition devices, obtains the three-phase current information of distribution line;
Described focus on device for: calculate sudden change difference of phase currents whether reach sudden change requirement, if reached, freeze current curent change information, and require all the other two-phases to freeze simultaneously, and three-phase current information is synchronously processed, obtain the three-phase current information of described distribution line.
2. distribution line intelligent online record wave system system as claimed in claim 1, is characterized in that, described first microprocessor comprises:
Whether electric current judging unit, change for the electric current that judges described current information, if change, records current curent change waveform according to described current information, and current waveform information is sent to first communication module; Timing judging unit, at the 3rd time clocking internal of time set in advance, in the time that timing finishes, records current curent change waveform according to described current information, and current waveform information is sent to first communication module.
3. distribution line intelligent online record wave system system as claimed in claim 2, is characterized in that, described electric current judging unit comprises:
The first electric current judging unit, for judging whether the electric current of described current information reduces, when described electric current reduces and when the duration is the very first time setting in advance, judge described distribution line generation open fault, record current curent change waveform according to described current information, and current waveform information is sent to first communication module; The second electric current judging unit, for in the time that the electric current increase of described current information and duration are the second time setting in advance, judge whether described electric current is greater than the current value setting in advance, in the time that described electric current is greater than the current value setting in advance, record current curent change waveform according to described current information, and current waveform information is sent to first communication module.
4. distribution line intelligent online record wave system system as claimed in claim 3, is characterized in that, described waveform acquisition device also comprises:
The first power module, for providing supply voltage to described waveform acquisition device;
The first low-voltage testing circuit, for detection of the supply voltage of described waveform acquisition device, and is sent to described first microprocessor by testing result;
The first clock circuit, for providing the clock circuit of accurate clock signal to described first microprocessor.
5. distribution line intelligent online as claimed in claim 1 record wave system system, is characterized in that, described in focus on device and also comprise:
Second source module, for providing supply voltage to the described device that focuses on;
The second low-voltage testing circuit, for detection of the described supply voltage that focuses on device, and is sent to described the second microprocessor by testing result;
Pulse protection circuit, is connected with the described antenna end that focuses on device, for filtering lightning strike signals and high-voltage signal; Second clock circuit, for providing the clock circuit of accurate clock signal to described the second microprocessor.
6. the record of the distribution line intelligent online as described in claim 1～5 any one wave system system, is characterized in that, described system also comprises Surveillance center;
The described device that focuses on also comprises: the first gsm communication module, for converting the three-phase current information of distribution line to note data bag, and is sent to Surveillance center;
Described Surveillance center, for receiving described note data bag, and the form setting in advance according to user carries out alarm prompt.
7. distribution line intelligent online record wave system system as claimed in claim 6, is characterized in that, described Surveillance center comprises: communication switchboard and application server;
Described communication switchboard, for resolving described note data bag, obtains the three-phase current information of distribution line, and described three-phase current information is sent to application server;
Described application server, is connected with described communication switchboard by RS232 interface and/or USB interface, and for according to described three-phase current information, actual distribution line being carried out to analysis management, and the form setting in advance according to user carries out alarm prompt.
8. distribution line intelligent online record wave system system as claimed in claim 7, is characterized in that, described communication switchboard comprises:
The second gsm communication module, comprises primary gsm communication module and gsm communication module for subsequent use; Described primary gsm communication module is used for receiving described note data bag; Described gsm communication module for subsequent use is used in described primary gsm communication module, when busy, receiving described note data bag;
The 3rd microprocessor, according to current traffic size, switches the switch of described primary gsm communication module and gsm communication module for subsequent use in real time;
The 3rd clock circuit, for providing accurate clock signal to described the 3rd microprocessor.
9. distribution line intelligent online record wave system system as claimed in claim 8, is characterized in that, described application server comprises: setting unit and statistic unit:
Described setting unit focuses on the parameter of device and the parameter of described waveform acquisition device described in arranging;
Described the second gsm communication module also focuses on device described in the parameter of described setting unit setting is sent to;
Described the first gsm communication module, the parameter also sending for receiving described the second gsm communication module, and the parameter of described waveform acquisition device is sent to described waveform acquisition device;
Described first communication module, also for receiving the parameter of described waveform acquisition device;
Described statistic unit, for adding up the historical curent change curve of described distribution line, and shows with the form of form form and/or pictorial statement.
10. distribution line intelligent online record wave system system as claimed in claim 7, is characterized in that, the form that described user sets in advance is one or several combinations in messaging format, speech play form and graphical format.
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| CN112305458B (en) * | 2020-12-30 | 2021-04-16 | 南京斯泰恩智慧能源技术有限公司 | Wave recording type platform area residual current detection terminal and early warning system |
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