CN104954047B - A kind of method for solving low voltage electric power carrier communication islanding problem - Google Patents

A kind of method for solving low voltage electric power carrier communication islanding problem Download PDF

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Publication number
CN104954047B
CN104954047B CN201510359786.0A CN201510359786A CN104954047B CN 104954047 B CN104954047 B CN 104954047B CN 201510359786 A CN201510359786 A CN 201510359786A CN 104954047 B CN104954047 B CN 104954047B
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ammeter
tagged word
return
communication
relay
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CN104954047A (en
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戴成涛
龙昌明
汪梦余
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Elefirst Science & Tech. Co., Ltd.
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Elefirst Science & Tech Co Ltd
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Abstract

The present invention relates to a kind of method for solving low voltage electric power carrier communication islanding problem, repeater real-time sense carrier channel, when the channel is idle, relay send broadcasting command to neighbouring ammeter, the address of ammeter is recognized, the ammeter around relay is sorted out;When channel busy, concentrator carries out meter reading to ammeter, relay intercepts the uplink message and downlink message of concentrator, uplink message and downlink message are analyzed, the signal intelligence for the communications counter recording electrical meter that relay passes through ammeter, so as to judge whether ammeter is located in communication isolated island using communications counter, if in communication isolated island, enabling relay.The method that the present invention solves low voltage electric power carrier communication islanding problem, possesses carrier channel detectability, will not occur communication collision, so as to improve meter reading success rate.

Description

A kind of method for solving low voltage electric power carrier communication islanding problem
Technical field
It is especially a kind of to solve low voltage electric power carrier communication orphan the present invention relates to a kind of method of low voltage electric power carrier communication The method of island problem, belongs to communication system of power grids field.
Background technology
In recent years, State Grid Corp. is proposed to be built with telecommunications acquisition system is practical, and number is proposed to automatic meter reading system According to the construction object of collection success rate 100%.But, in vast rural area, many platforms become power supply relation complexity, supply line Distance, carrier communication distance is not enough, and communication capacity is limited, and communication island phenomenon occurs again and again, and therefore, it is difficult to complete data to adopt The construction object of integrated power 100%.
According to the applicant understood, for communication islanding problem, current processing scheme is:In one Ge Tai areas, in original carrier wave On the basis of kilowatt meter reading-out system, one carrier wave concentrator additionally is installed in isolated island vicinity, dedicated for ammeter in copy reading isolated island Data.Though the program can solve the problem that communication islanding problem, after newly-increased concentrator is installed, there are the following problems:
1. carrier wave concentrator unit price is expensive, extra cost of investment of installing is high, is unfavorable for promoting;
2. needing to reconfigure meter archives, and total system debugging is carried out, add site operation workload;
3. two concentrators occur in a Ge Tai areas, new demand is proposed to power information acquisition system platform, project involves face Excessively, it is unfavorable for promoting;
4. a Ge Tai areas occur two concentrators, to routine works such as electric company's asset management, plant maintenances it is also proposed that Requirements at the higher level, make troubles to staff;
5. same become in install two concentrators, carrier communication conflict collision probability greatly improve, be unfavorable for meter reading into The raising of power.
The content of the invention
By trunking if solution low voltage electric power carrier communication islanding problem is obviously relatively inexpensive, but conducted oneself well as improper Reason, the conflict in carrier communication is inevitable, there is also and makes an inventory repeatedly, it is impossible to be applied to solve islanding problem conscientiously.
It is a first objective of the present invention to provide a kind of method for solving low voltage electric power carrier communication islanding problem, the party Method can be to determine the need for providing prerequisite by relay forwarding.
Further aim of the present invention is, it is further provided avoid occur communication collision, significantly improve meter reading efficiency, it is thorough The method that bottom solves low voltage electric power carrier communication islanding problem.
In order to reach primary and foremost purpose, the present invention solves the method basic technical scheme of low voltage electric power carrier communication islanding problem To install intelligent relay between the purpose ammeter and concentrator positioned at communication isolated island, the intelligent relay contains The intelligent kernel device communicated by carrier communication module with purpose ammeter and concentrator, and each purpose electric meter address of correspondence The memory device of file store, the file store contains communications counter corresponding with each purpose electric meter address and tagged word respectively A and tagged word B, the tagged word A are defined as characterizing each purpose ammeter not with nearby respectively with 0,1, and the tagged word B determines Justice is run as follows to characterize purpose ammeter not with isolated island respectively with 0,1 on the intelligent kernel device after electricity:
Step 1: monitoring carrier wave channel, judges to whether there is data transfer on channel;If carrying out next step without if;If Then carry out step 5;
Step 2: sending broadcast searches statistical tables and reports text, and determine whether that adjacent purpose ammeter receives broadcast and searched after statistical tables and reports text Confirmation message is replied, if otherwise return to step one, if then carrying out next step;
Step 3: identifying the address of the adjacent purpose ammeter according to the reply for receiving confirmation message, and judge the electricity It is existing in the whether existing file store of table address, if corresponding tagged word A then is put into 1, tagged word B and communications counter maintenance It is constant, return to step one;As otherwise carried out next step;
Step 4: after file store increases the purpose electric meter address, corresponding tagged word A and tagged word B are put into 1, lead to Believe return to step one after counter clear 0;
Step 5: judging whether to receive effective message, next step is then carried out in this way, such as otherwise return to step one;
Step 6: the purpose electric meter address of identification concentrator copy reading, and determine whether downlink message, if under then carrying out One step;As otherwise carried out step 9;
Step 7: judging existing in the whether existing file store of purpose electric meter address, if then keeping corresponding tagged word A It is constant with tagged word B, and corresponding communications counter add 1 after return to step one;As otherwise carried out next step;
Step 8: after file store increases the purpose electric meter address, corresponding tagged word A is set to 0, tagged word B puts 1, and Return to step one after corresponding communications counter clear 0;
Step 9: judging existing in the whether existing file store of purpose electric meter address, if then keeping corresponding tagged word A Constant, tagged word B is set to 0, and corresponding communications counter subtracts 1, return to step one;As otherwise carried out next step;
Step 10: after file store increases the purpose electric meter address, corresponding tagged word A and tagged word B are set to 0, and Return to step one after corresponding communications counter clear 0.
In order to reach further purpose, on the basis of the above, the present invention solves low voltage electric power carrier communication islanding problem Method with the scheduled time complete above-mentioned steps after, the intelligent relay is determined to each purpose one by one as follows Whether ammeter is forwarded:
The first step, judge whether purpose ammeter tagged word A is 1, such as otherwise conclude this ammeter for not in communication isolated island scope, Without relay forwarding;Next step is then carried out in this way;
Second step, judge whether communications counter is more than predetermined threshold lower limit (acquiescence 5), then conclude this purpose electricity in this way Table carries out relay forwarding in the range of communication isolated island;As otherwise carried out next step;
3rd step, judge whether purpose ammeter tagged word B is 1, such as otherwise conclude this ammeter for not in communication isolated island scope, Without relay forwarding.
Due to being communicated in channel idle using relay with neighbouring purpose ammeter, in concentrator meter reading process In, only need a limited number of secondary feedback information for not receiving neighbouring purpose ammeter, so that it may accurately judge that it is located in communication isolated island, Then determine to need to carry out relay forwarding, so as to be prevented effectively from communication collision, in the case where ensureing correct make an inventory, greatly improve Meter reading efficiency.
Further, intelligent relay is somebody's turn to do by data message forwarding to the target ammeter of relay forwarding is needed while recording The address of target ammeter;After corresponding purpose ammeter is correctly responded, the purpose ammeter of address and record in back message is compared Location, relay forwarding returns concentrator if both are consistent, otherwise not forwards.It so may further ensure that communication does not occur touches Hit, it is ensured that correctly make an inventory.
Intelligent relay contains the microprocessor as intelligent kernel device, the storage read-write end of the microprocessor with The corresponding ports communication connection of storage chip, the file store to store each purpose electric meter address of correspondence;The microprocessor Data transmit-receive end is of coupled connections by carrier communication circuit with being connected the meter reading circuit of concentrator, to intercept meter reading signal;Institute The COM1 for stating microprocessor connects 485 telecommunication circuits, to local maintenance communication;The power port of the microprocessor connects electricity Source module circuit, to be powered to intelligent relay;The indication output end mouth of the microprocessor connects operation and indicates, carries respectively Wave communication, local maintenance indicator lamp.In addition microprocessor periphery is also containing conventional external crystal oscillation circuit, hardware watchdog electricity Road.
It is summed up, compared with prior art, the beneficial effects of the invention are as follows:
1. on the basis of original system, problem of detached island of information can be properly settled by only installing a relay, be invested into This is low, is adapted to promote;
2. after relay is installed, plug and play is non-maintaining, without configuring any parameter, you can normal operation, have Effect reduces site operation workload;
3. due to for power information acquisition system platform, relay belongs to invisible equipment, thus without Embodied in system platform, reduce the coupling of system, be conducive to the practical application of project;
4. possessing carrier channel detectability, relay is communicated with neighbouring ammeter in channel idle, works as channel When busy, relay analysis ammeter uplink message and downlink message situation can actively avoid concentrator communication, will not occur Communication collision, significantly improves meter reading success rate.
Brief description of the drawings
Fig. 1 is the system principle of compositionality figure of one embodiment of the invention.
Fig. 2 is the intelligent relay circuit block diagram of Fig. 1 embodiments.
Fig. 3 is the intelligent relay circuit diagram of Fig. 1 embodiments.
Fig. 4 is the basic operation logic FB(flow block) of the intelligent relays of Fig. 3.
Embodiment
Embodiment 1
The present embodiment solves the method for low voltage electric power carrier communication islanding problem as shown in figure 1, in communication isolated island with concentrating Intelligent relay is installed between device.Intelligent relay as shown in Figure 2 and Figure 3, with internal RAM and program Flash Intelligent kernel device --- CEP2002EX microprocessor chips are core devices, the storage read-write end 6,7 of the intelligent kernel device With 12 pin and EEPROM storage chips AT24C64 corresponding ports two-way communication link, to storing each purpose ammeter of correspondence The file store of location;The meter reading electricity of its data transmit-receive end 2,13 pin by the carrier communication circuit in Fig. 3 upper right corner with being connected concentrator Road is of coupled connections, to intercept meter reading signal;Its right side central of 8,9,11 pin map interlinking of COM1 3 is logical with SN65HVD3082ED 485 telecommunication circuits that chip is core devices are believed, to local maintenance;The power module electricity in its lower right corner of power port map interlinking 3 Road, to be powered to intelligent relay;Its indication output end mouthful 18-22 pin are connect respectively by the crops for rotation N1 that connects in Fig. 3 upper left corners Run instruction, carrier communication, local maintenance indicator lamp;In addition intelligent kernel device periphery is also containing conventional external crystal-controlled oscillation electricity Road, hardware watchdog circuit.
The file store of storage contains corresponding with each purpose electric meter address communications counter and tagged word A and feature respectively Word B, tagged word A are defined as characterizing each purpose ammeter not with nearby respectively with 0,1, and tagged word B is defined as respectively with 0,1 table Purpose ammeter is levied not run as follows after electricity with isolated island, intelligence:
Step 1: into " intercepting " pattern, active sniffing carrier channel judges to whether there is data transfer on channel;If Nothing then carries out next step;If then carrying out step 5;
Step 2: starting " communication " pattern, send broadcast and search statistical tables and reports text, and determine whether that adjacent purpose ammeter is received Broadcast replys confirmation message after searching statistical tables and reports text, if otherwise return to step one, if then carrying out next step;
Step 3: identifying the address of the adjacent purpose ammeter according to the reply for receiving confirmation message, and judge the electricity It is existing in the whether existing file store of table address, if corresponding tagged word A then is put into 1, tagged word B and communications counter maintenance It is constant, return to step one;As otherwise carried out next step;
Step 4: after file store increases the purpose electric meter address, corresponding tagged word A and tagged word B are put into 1, lead to Believe return to step one after counter clear 0;
Step 5: judging whether to receive effective message, next step is then carried out in this way, such as otherwise return to step one;
Step 6: starting " analysis " pattern, the purpose electric meter address of concentrator copy reading is recognized, and determines whether descending report Text, if then carrying out next step;As otherwise carried out step 9;
Step 7: judging existing in the whether existing file store of purpose electric meter address, if then keeping corresponding tagged word A It is constant with tagged word B, and corresponding communications counter add 1 after return to step one;As otherwise carried out next step;
Step 8: after file store increases the purpose electric meter address, corresponding tagged word A is set to 0, tagged word B puts 1, and Return to step one after corresponding communications counter clear 0;
Step 9: judging existing in the whether existing file store of purpose electric meter address, if then keeping corresponding tagged word A Constant, tagged word B is set to 0, and corresponding communications counter subtracts 1, return to step one;As otherwise carried out next step;
Step 10: after file store increases the purpose electric meter address, corresponding tagged word A and tagged word B are set to 0, and Return to step one after corresponding communications counter clear 0.
After above-mentioned steps are completed with the scheduled time, intelligent relay is determined to each purpose electricity one by one as follows Whether table is forwarded:
The first step, judge whether purpose ammeter tagged word A is 1, such as otherwise conclude this ammeter for not in communication isolated island scope, Without relay forwarding;Next step is then carried out in this way;
Second step, judge communications counter whether be more than predetermined threshold lower limit, acquiescence 5, then conclude in this way by this purpose electricity Table carries out relay forwarding in the range of communication isolated island;As otherwise carried out next step;
3rd step, judge whether purpose ammeter tagged word B is 1, such as otherwise conclude this ammeter for not in communication isolated island scope, Without relay forwarding.
In the above process, intelligent relay by data message forwarding to the target ammeter of relay forwarding is needed, simultaneously Record the address of the target ammeter;After corresponding purpose ammeter is correctly responded, the purpose of address and record in back message is compared Electric meter address, relay forwarding returns concentrator if both are consistent, otherwise not forwards.
In addition to the implementation, the present invention can also have other embodiment.All use equivalent substitution or equivalent transformation shape Into technical scheme, all fall within the protection domain of application claims.

Claims (1)

1. a kind of method for solving low voltage electric power carrier communication islanding problem, in the purpose ammeter and concentrator positioned at communication isolated island Between intelligent relay is installed, the intelligent relay contains logical by carrier communication module and purpose ammeter and concentrator The intelligent kernel device of letter, and the memory device of the file store of each purpose electric meter address is corresponded to, the file store contains difference Communications counter corresponding with each purpose electric meter address and tagged word A and tagged word B, the tagged word A be defined as respectively with 0th, 1 characterize each purpose ammeter not with nearby, the tagged word B be defined as respectively with 0,1 characterize purpose ammeter not with Run as follows after electricity on isolated island, the intelligent kernel device:
Step 1: monitoring carrier wave channel, judges to whether there is data transfer on channel;If carrying out next step without if;If then entering Row step 5;
Step 2: sending broadcast searches statistical tables and reports text, and determine whether that adjacent purpose ammeter receives broadcast and searches reply after statistical tables and reports text Confirmation message, if otherwise return to step one, if then carrying out next step;
Step 3: the address of the adjacent purpose ammeter is identified according to the reply for receiving confirmation message, and with judging the ammeter It is existing in the whether existing file store in location, if corresponding tagged word A then is put into 1, tagged word B and communications counter maintenance not Become, return to step one;As otherwise carried out next step;
Step 4: after file store increases the purpose electric meter address, corresponding tagged word A and tagged word B are put into 1, communication meter Return to step one after number device clear 0;
Step 5: judging whether to receive effective message, next step is then carried out in this way, such as otherwise return to step one;
Step 6: the purpose electric meter address of identification concentrator copy reading, and determine whether downlink message, if then carrying out next Step;As otherwise carried out step 9;
Step 7: judging existing in the whether existing file store of purpose electric meter address, if then keeping corresponding tagged word A and spy Levy word B constant, and corresponding communications counter add 1 after return to step one;As otherwise carried out next step;
Step 8: after file store increases the purpose electric meter address, corresponding tagged word A is set to 0, tagged word B puts 1, and accordingly Communications counter clear 0 after return to step one;
Step 9: judging existing in the whether existing file store of purpose electric meter address, if then keeping corresponding tagged word A not Become, tagged word B is set to 0, and corresponding communications counter subtracts 1, return to step one;As otherwise carried out next step;
Step 10: after file store increases the purpose electric meter address, corresponding tagged word A and tagged word B are set to 0, and accordingly Communications counter clear 0 after return to step one.
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CN107426633B (en) * 2017-08-01 2020-09-01 金卡智能集团股份有限公司 Meter reading system, communication method and communication forwarding device

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Publication number Priority date Publication date Assignee Title
CN102176681A (en) * 2011-03-01 2011-09-07 桂林宏博电子信息科技有限公司 Long-distance concentrated ammeter reading system based on flooding algorithm
JP2011250300A (en) * 2010-05-28 2011-12-08 Panasonic Electric Works Co Ltd Remote meter reading system
CN102346955A (en) * 2010-07-30 2012-02-08 上海资和通信科技有限公司 Remote wireless concentrated reading system for residential electricity meter

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Publication number Priority date Publication date Assignee Title
CN101236693B (en) * 2007-02-01 2011-08-10 上海久隆电力(集团)有限公司 Intelligent meter reading system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011250300A (en) * 2010-05-28 2011-12-08 Panasonic Electric Works Co Ltd Remote meter reading system
CN102346955A (en) * 2010-07-30 2012-02-08 上海资和通信科技有限公司 Remote wireless concentrated reading system for residential electricity meter
CN102176681A (en) * 2011-03-01 2011-09-07 桂林宏博电子信息科技有限公司 Long-distance concentrated ammeter reading system based on flooding algorithm

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