CN105931447A - Downlink communication system of low-voltage power meter reading system and meter reading method - Google Patents
Downlink communication system of low-voltage power meter reading system and meter reading method Download PDFInfo
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- CN105931447A CN105931447A CN201610514762.2A CN201610514762A CN105931447A CN 105931447 A CN105931447 A CN 105931447A CN 201610514762 A CN201610514762 A CN 201610514762A CN 105931447 A CN105931447 A CN 105931447A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/546—Combination of signalling, telemetering, protection
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a downlink communication system of a low-voltage power meter reading system and a meter reading method. The downlink communication system comprises a main station connected with a concentrator, wherein the concentrator is electrically connected with a slave module of an acquirer or an intelligent electric meter through a master module; and the acquirer is electrically connected with the intelligent electric meter through the slave module. The meter reading method comprises the following steps: sending a meter reading task to the current node through a wireless channel; judging whether meter reading is successful; if meter reading fails, sending the meter reading task to the current node through a power frequency power line channel and to a next node through the wireless channel; and if the meter reading is successful, sending the meter reading task to the next node through the wireless channel. According to the downlink communication system and the meter reading method, the technical problems that power line carrier communication, micro-power wireless communication or dual-mode communication combining the power line carrier communication and the micro-power wireless communication in downlink communication of the low-voltage power meter reading system are unreasonable, and information of a phase where the intelligent electric meter is placed cannot be accurately identified and the like are solved.
Description
Technical field
The invention belongs to electricity meter-reading technology, particularly relate to a kind of low-voltage power kilowatt meter reading-out system downlink communication system and meter register method.
Background technology
In low-voltage power centralized meter-reading system, the commonly used power line carrier communication of downlink communication and micro power radio communication, power line carrier communication is easily affected by communication distance, power grid environment, micro power radio communication is easily affected by communication distance, weather, barrier obstruction, often communication success rate is unable to reach preferable effect, and cannot clearly know intelligent electric meter place phase information；Power-line carrier communication, by power line communication, is easily affected by power line environment, and communication efficiency is unstable.The dual mode communication technology that power-line carrier communication combines with micropower wireless communication technology, communication success rate can only be promoted to a certain extent, owing to being limited by power line carrier, the condition of micropower wireless technology own, also cannot realize mixed networking at present, power line carrier, micropower are wireless is two separate networks, it is impossible to give full play to the power line carrier advantage that combine wireless with micropower；Power-line carrier communication and micropower wireless communication technology all cannot accurate identification intelligent ammeter place phase informations.
Summary of the invention
The technical problem to be solved in the present invention: a kind of low-voltage power kilowatt meter reading-out system downlink communication system and meter register method are provided, with solve the prior art dual mode communication that uses power line carrier communication, micro power radio communication or power line carrier communication to combine with micro power radio communication in low-voltage power kilowatt meter reading-out system downlink communication all exist communicate unreliable, it is impossible to the technical problems such as accurate identification intelligent ammeter place phase information.
Technical solution of the present invention:
A kind of low-voltage power kilowatt meter reading-out system downlink communication system, it includes that main website, main website electrically connects with concentrator, and concentrator passes through electrically connecting from module of primary module and harvester or intelligent electric meter, and harvester passes through to electrically connect with intelligent electric meter from module.
Described primary module and all include central processor unit from module; central processor unit is connected with interface module and micropower wireless communication module wire; central processor unit is connected with power frequency electric line of force communication modulation module and power frequency electric line of force communication demodulation module wire; power frequency electric line of force communication modulation module communicate with the power frequency electric line of force demodulation module with protection module wire is connected, protect module be connected with power frequency electric line of force wire.
A kind of meter register method of low-voltage power kilowatt meter reading-out system, it includes:
Step 1, sent to present node by wireless channel and check meter task；
Step 2, judge that step 1 is checked meter whether success；
Step 3, step 2 are checked meter unsuccessful, send, to present node, task of checking meter by power frequency electric line of force channel, send, to next node, task of checking meter by wireless channel simultaneously；
Step 4, step 2 are checked meter successfully, then send, to next node, task of checking meter by wireless channel；
Step 5, judge that step 3 and 4 is checked meter whether success, unsuccessful then return step 3；
Step 6, checking meter the most then judges whether task of checking meter terminates, and does not terminates, returns step 4.
The method have the benefit that
The present invention uses power frequency electric power line communication technology, it is different from power-line carrier communication, do not affected by power line environment, its communication success rate can reach 100%, and energy accurately identification intelligent ammeter place phase information, but it is relatively slow that its shortcoming is traffic rate, and the traffic rate of micropower wireless technology is very fast.The advantage that present invention incorporates power frequency electric power line communication technology and micropower wireless communication technology, communication success rate can not only be made to be greatly improved and to reach 100%, and energy accurately identification intelligent ammeter place phase information, provide accurate foundation for three-phase imbalance and line fault analysis；Solve the dual mode communication that prior art uses power line carrier communication, micro power radio communication or power line carrier communication to combine with micro power radio communication in low-voltage power kilowatt meter reading-out system downlink communication all exist communicate unreliable, it is impossible to the accurately technical problem such as identification intelligent ammeter place phase information.
Accompanying drawing illustrates:
Fig. 1 is present configuration schematic diagram；
Fig. 2 is principal and subordinate's modular structure schematic diagram of the present invention；
Fig. 3 is meter register method schematic diagram of the present invention.
Detailed description of the invention:
A kind of low-voltage power kilowatt meter reading-out system downlink communication system, it includes (see figure 1) main website, main website is connected by wirelessly or non-wirelessly network with concentrator, concentrator is connected from module wirelessly or non-wirelessly network by primary module and harvester or intelligent electric meter, and harvester passes through to be connected with intelligent electric meter wirelessly or non-wirelessly network from module.
Described primary module and all include (see figure 2) central processor unit from module; central processor unit is connected with interface module and micropower wireless communication module wire; central processor unit is connected with power frequency electric line of force communication modulation module and power frequency electric line of force communication demodulation module wire; power frequency electric line of force communication modulation module communicate with the power frequency electric line of force demodulation module with protection module wire is connected, protect module be connected with power frequency electric line of force L and N.
Central processor unit is the core component of module, is responsible for the communication of the power frequency electric line of force and the signal processing of radio communication, and with intelligent electric meter or concentrator communication, the light on and off being responsible for controlling display lamp carry out the duty of indicating module.
Central processor unit is connected with power frequency electric line of force communication modulation module, it would be desirable to the data sent by power frequency electric line of force channel are sent on electric lines of force, is connected with power frequency electric line of force communication demodulation module, receives from the power frequency electric line of force signal of communication on electric lines of force.The protection whole device of module protection is not ensured the normal work of device by disturbing from electric lines of force.
Central processor unit, by being connected with micropower wireless communication module, receives and sends wireless communication signals.
Interface module is used for link block and concentrator or intelligent electric meter.
Power module provides reliable and stable power supply for whole device.
A kind of meter register method of low-voltage power kilowatt meter reading-out system, it includes:
After power frequency electric line of force communication network and micro power radio communication network organizing complete, initiation along with the task of checking meter, primary module sends, by wireless channel, task of checking meter from node (band is from the intelligent electric meter of module) to each, if present node is checked meter successfully, then send, from node, the task add up the success rate of checking meter of present node wireless channel of checking meter to the next one by wireless channel；If present node is checked meter unsuccessful, then send, to present node, task of checking meter by power frequency electric line of force channel and send, from node, the task add up the success rate of checking meter of present node wireless channel of checking meter to the next one by wireless channel simultaneously；Check meter in this way, until all complete from node copy reading by what primary module stored.Flow of task of checking meter is shown in Fig. 3.
Claims (3)
1. a low-voltage power kilowatt meter reading-out system downlink communication system, it includes main website, it is characterised in that: main website and concentrator
Connecting, concentrator is electrically connected from module by primary module and harvester or intelligent electric meter, and harvester passes through to electrically connect with intelligent electric meter from module.
A kind of low-voltage power kilowatt meter reading-out system downlink communication system the most according to claim 1; it is characterized in that: described primary module and all include central processor unit from module; central processor unit is connected with interface module and micropower wireless communication module wire; central processor unit is connected with power frequency electric line of force communication modulation module and power frequency electric line of force communication demodulation module wire; power frequency electric line of force communication modulation module communicate with the power frequency electric line of force demodulation module with protection module wire is connected, protect module be connected with power frequency electric line of force wire.
3. a meter register method for low-voltage power kilowatt meter reading-out system, it includes:
Step 1, sent to present node by wireless channel and check meter task；
Step 2, judge that step 1 is checked meter whether success；
Step 3, step 2 are checked meter unsuccessful, send, to present node, task of checking meter by power frequency electric line of force channel, send, to next node, task of checking meter by wireless channel simultaneously；
Step 4, step 2 are checked meter successfully, then send, to next node, task of checking meter by wireless channel；
Step 5, judge that step 3 and 4 is checked meter whether success, unsuccessful then return step 3；
Step 6, checking meter the most then judges whether task of checking meter terminates, and does not terminates, returns step 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610514762.2A CN105931447A (en) | 2016-07-04 | 2016-07-04 | Downlink communication system of low-voltage power meter reading system and meter reading method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610514762.2A CN105931447A (en) | 2016-07-04 | 2016-07-04 | Downlink communication system of low-voltage power meter reading system and meter reading method |
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| CN105931447A true CN105931447A (en) | 2016-09-07 |
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| CN201610514762.2A Pending CN105931447A (en) | 2016-07-04 | 2016-07-04 | Downlink communication system of low-voltage power meter reading system and meter reading method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652425A (en) * | 2016-11-03 | 2017-05-10 | 国家电网公司 | Meter reading courts electricity information comprehensive general survey instrument |
| CN106781357A (en) * | 2016-11-23 | 2017-05-31 | 国网江苏省电力公司电力科学研究院 | The meter register method and system of a kind of time-division frequency division multiplexing |
| CN106935022A (en) * | 2017-03-21 | 2017-07-07 | 广西盛洲电力科技有限公司 | A kind of wideband power carrier communication kilowatt meter reading-out system |
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| CN206021528U (en) * | 2016-07-04 | 2017-03-15 | 贵州电网有限责任公司电力科学研究院 | A kind of low-voltage power kilowatt meter reading-out system downlink communication system |
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| CN202600934U (en) * | 2012-05-14 | 2012-12-12 | 广东中钰科技有限公司 | Smart acquisition terminal with multiple communication modes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20160907 |
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