CN104502796A - Low-current line selection device for wireless networking - Google Patents
Low-current line selection device for wireless networking Download PDFInfo
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- CN104502796A CN104502796A CN201410757675.0A CN201410757675A CN104502796A CN 104502796 A CN104502796 A CN 104502796A CN 201410757675 A CN201410757675 A CN 201410757675A CN 104502796 A CN104502796 A CN 104502796A
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Abstract
The invention discloses a low-current line selection device for wireless networking. Each power distribution room is provided with a line selection controller; each line selection controller selects a unique arc-suppression mode to select the line according to each power distribution room; the most likely faulty line, numerical value change and direction change information of zero-sequence current of the faulty line, a line selection mode and occurrence time selected out from each power distribution room are uniformly transmitted to a line selection receiving device through a GPRS (general packet radio service) network; a receiving controller in a master station uniformly receives the data transmitted from the line selection controller for the power distribution rooms within a certain period of time; meanwhile, the receiving controller in the master station also collects a path of incoming line zero sequence CT; whether an outer network, a bus or an outer network has fault can be judged according to the incoming line; the data of all power distribution rooms and the data of the incoming line are uniformly compared and judged; finally the sole faulty line is determined, thus the line selection accuracy rate is improved; the data are transmitted to mobile phones or other equipment of customers for reminding through a GSM (global system for mobile communications) short message function after the faulty line is selected out.
Description
Technical field
The present invention relates to technical field of power systems, be specifically related to a kind of wireless networking line selection device for low current, especially can select the line selection apparatus of faulty line for complicated electric power system.
Background technology
Current small current neutral grounding system is applied widely in China 6 ~ 35KV network system, and the probability that singlephase earth fault breaks down in small current neutral grounding system is up to 80%, and causes heavy losses to network system.Therefore, process earth fault in time, have meaning energetically to the safe operation of electric system.But for there is different extinguishing arc modes in integrated system, the zero-sequence current in each substation can be caused like this can not to calculate according to same algorithm.Make the accurate rate variance of line selection apparatus route selection within the system.Get rid of to earth fault line and cause difficulty, easily cause misjudgment.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of signal not affect by other factors of Distance geometry, and route selection wireless networking line selection device for low current accurately.
Technical matters to be solved by this invention realizes by the following technical solutions:
A kind of wireless networking line selection device for low current, it is characterized in that: at each switchgear building, a selector control device is installed, described selector control device selects exclusive extinguishing arc mode to carry out route selection for each switchgear building, then each switchgear building is selected most possible faulty line, the numerical value change of the zero-sequence current of faulty line and direction change information, line selection mode, time of origin is through the unified route selection receiving trap issuing master station of GPRS network, and the data that the reception controller in main website (tentatively fixes on 30S) within a certain period of time to be sended over switchgear building selector control device are unified to be received, the reception controller of main website also will gather a road inlet wire zero sequence CT simultaneously, can judge whether it is outer net according to this inlet wire, bus or outer net fault, and then all switchgear building data and inlet wire data are unified multilevel iudge by unification, finally determine unique faulty line, thus improve route selection accuracy rate, by GSM message function the data very first time issued in Client handset or other equipment after selecting faulty line and remind.
Described GPRS network comprises GPRS networking module and GSM information transmitting and receiving module, described GPRS networking module, for selecting teledata real time emission and reception after the line fault in each station, described GSM information transmitting and receiving module is for after selecting faulty line, and failure message is sent to client in the mode of note.
Described GPRS networking module specifically comprises: GPRS real-time Data Transmission unit, for the data after collection are transferred to master station; Aggregation of data unit, for being got up by the Organization of Data at each station and passing through unified comparison, namely accurately looks for out of order unique circuit.
Based on a method of work for wireless networking line selection device for low current, it is characterized in that, comprise the following steps;
Step 1: the mobile terminal device in investigative range;
Step 2: send connection request, set up wireless self-organization network;
Step 3: when there is earth fault, starts GPRS data transmission equipment, carries out data transmission to all devices in network;
Step 4: substation data are unified in uniform data process on total station control, select faulty line;
Step 5: send route selection failure message to each mobile hand-held device in network.
The present invention adopts the unified collection of the data of master station and substation, and realizes exchanges data by GPRS network between substation and master station, ensure that signal does not affect by other factors of Distance geometry, ensure that the accuracy of signal.Hardware circuit rearranges on the basis of route selection in the past, makes the earthing wire-selecting that can be applicable to different situations, and algorithm aspect have chosen the faulty line selection algorithm that multiple criterion merges, and improves the accuracy rate of route selection.Prompting message failure message being sent to mobile hand-held device in network simultaneously or receiving in network.
The invention has the beneficial effects as follows: route selection rate of accuracy reached of the present invention is to the highest, simultaneously because wirelessly, so there is information, according to simply, little etc. a little without the need to connecing connection, installing space between networking.
Accompanying drawing explanation
Fig. 1 is present system frame assumption diagram.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
As shown in Figure 1, a kind of wireless networking line selection device for low current, in each switchgear building (arc extinction cabinet, suppress cabinet) a selector control device is installed, described selector control device selects exclusive extinguishing arc mode to carry out route selection for each switchgear building, then each switchgear building is selected most possible faulty line, the numerical value change of the zero-sequence current of faulty line and direction change information, line selection mode, time of origin is through the unified route selection receiving trap issuing master station of GPRS network, and the data that the reception controller in main website (tentatively fixes on 30S) within a certain period of time to be sended over switchgear building selector control device are unified to be received, the reception controller of main website also will gather a road inlet wire zero sequence CT simultaneously, can judge whether it is outer net according to this inlet wire, bus or outer net fault, and then all switchgear building data and inlet wire data are unified multilevel iudge by unification, finally determine unique faulty line, thus improve route selection accuracy rate, by GSM message function the data very first time issued in Client handset or other equipment after selecting faulty line and remind.
Described GPRS network comprises GPRS networking module and GSM information transmitting and receiving module, described GPRS networking module, for selecting teledata real time emission and reception after the line fault in each station, described GSM information transmitting and receiving module is for after selecting faulty line, and failure message is sent to client in the mode of note.
Described GPRS networking module specifically comprises: GPRS real-time Data Transmission unit, for the data after collection are transferred to master station; Aggregation of data unit, for being got up by the Organization of Data at each station and passing through unified comparison, namely accurately looks for out of order unique circuit.
Based on a method of work for wireless networking line selection device for low current, it is characterized in that, comprise the following steps;
Step 1: the mobile terminal device in investigative range;
Step 2: send connection request, set up wireless self-organization network;
Step 3: when there is earth fault, starts GPRS data transmission equipment, carries out data transmission to all devices in network;
Step 4: substation data are unified in uniform data process on total station control, select faulty line;
Step 5: send route selection failure message to each mobile hand-held device in network.
The basis of common small current line selection adds GPRS data transfer function, the integration of the route selection data between multistation can have been realized when there is earth fault and judge unique faulty line, and the faulty line selected is issued client.The present invention adopts the unified collection of the data of master station and substation, and realizes exchanges data by GPRS network between substation and master station, ensure that signal does not affect by other factors of Distance geometry, ensure that the accuracy of signal.Hardware circuit rearranges on the basis of route selection in the past, makes the earthing wire-selecting that can be applicable to different situations, and algorithm aspect have chosen the faulty line selection algorithm that multiple criterion merges, and improves the accuracy rate of route selection.Prompting message failure message being sent to mobile hand-held device in network simultaneously or receiving in network.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (4)
1. a wireless networking line selection device for low current, it is characterized in that: at each switchgear building, a selector control device is installed, described selector control device selects exclusive extinguishing arc mode to carry out route selection for each switchgear building, then each switchgear building is selected most possible faulty line, the numerical value change of the zero-sequence current of faulty line and direction change information, line selection mode, time of origin is through the unified route selection receiving trap issuing master station of GPRS network, and the data that switchgear building selector control device sends over by reception controller in main website are within a certain period of time unified to be received, the reception controller of main website also will gather a road inlet wire zero sequence CT simultaneously, can judge whether it is outer net according to this inlet wire, bus or outer net fault, and then unified all switchgear building data and inlet wire data are unified multilevel iudge, finally determine unique faulty line, by GSM message function the data very first time issued in Client handset or other equipment after selecting faulty line and remind.
2. wireless networking line selection device for low current according to claim 1, is characterized in that: described GPRS networking module specifically comprises: GPRS real-time Data Transmission unit, for the data after collection are transferred to master station; Aggregation of data unit, for being got up by the Organization of Data at each station and passing through unified comparison, namely accurately looks for out of order unique circuit.
3. wireless networking line selection device for low current according to claim 2, it is characterized in that: described GPRS network comprises GPRS networking module and GSM information transmitting and receiving module, described GPRS networking module, for selecting teledata real time emission and reception after the line fault in each station, described GSM information transmitting and receiving module is for after selecting faulty line, and failure message is sent to client in the mode of note.
4., based on a method of work for wireless networking line selection device for low current described in claim 1 or 2 or 3, it is characterized in that, comprise the following steps;
Step 1: the mobile terminal device in investigative range;
Step 2: send connection request, set up wireless self-organization network;
Step 3: when there is earth fault, starts GPRS data transmission equipment, carries out data transmission to all devices in network;
Step 4: substation data are unified in uniform data process on total station control, select faulty line;
Step 5: send route selection failure message to each mobile hand-held device in network.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950893A (en) * | 2019-02-25 | 2019-06-28 | 华北电力大学 | The active arc-extinguishing system of singlephase earth fault based on variable voltage source |
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Address after: No. 28 Jinhua Avenue Shuangfeng Industrial Zone, Changfeng County of Hefei City, Anhui province 231100 Applicant after: ANHUI HEKAI ELECTRIC TECHNOLOGY CO., LTD. Address before: No. 28 Jinhua Avenue Shuangfeng Industrial Zone, Changfeng County of Hefei City, Anhui province 231100 Applicant before: Anhui Guoke Electric Power Equipment Co.,Ltd. |
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