CN103152358A - Electricity meter data collecting system and method - Google Patents
Electricity meter data collecting system and method Download PDFInfo
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- CN103152358A CN103152358A CN2013100957102A CN201310095710A CN103152358A CN 103152358 A CN103152358 A CN 103152358A CN 2013100957102 A CN2013100957102 A CN 2013100957102A CN 201310095710 A CN201310095710 A CN 201310095710A CN 103152358 A CN103152358 A CN 103152358A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/20—Information technology specific aspects, e.g. CAD, simulation, modelling, system security
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Abstract
The invention provides an electricity meter data collecting system and an electricity meter data collecting method. The system comprises N intelligent meter reading devices, a data collector and an energy supply end, wherein the N intelligent meter reading devices are used for generating N electricity meter data, in addition, the N electricity meter data is encrypted to obtain N messages, the N messages are sent to the data collector, the data collector is used for deciphering N messages, in addition, the N deciphered messages are coded, M coded messages are selected to be encrypted, the M coded and encrypted messages and (N-M) coded messages are sent to the energy supply end, the energy supply end is used for deciphering the M coded and encrypted messages, and the N coded messages are decoded to obtain N electricity meter data. The N deciphered messages are coded, and the M coded messages are selected to be encrypted, so the safety of the communication data (i.e. electricity meter data) is ensured, meanwhile, only M coded and encrypted messages are required at the ES part, so the deciphering complexity at the ES part is also reduced.
Description
Technical field
The present invention relates to the ICT (information and communication technology) field, particularly a kind of ammeter data gathering system and method.
Background technology
The modernization construction of electrical network is that many countries all are devoted to promote because it can improve efficiency of energy utilization, gradually be transitioned into new forms of energy use, reduce greenhouse gas discharging, set up the aspect such as continuable economic development and play very large effect.Network system is a kind of large-scale baroque system, and for safety and the stability of maintenance system, network service and information technology are widely used in network system, and this novel hybrid network is exactly intelligent grid.
Say technically, intelligent grid is following a kind of self-healing property electric power system based on information technology, by information technology, can improve current electric power system, makes the more efficient of its change.Intelligent grid will merge novel control, information and administrative skill, realizes from generating to a series of intelligent interaction the terminal use, conforms with science and optimizes methodically the parts such as generating, transmission and disttrbution.The application expectation of advanced digital technology can improve the efficient of reliability, fail safe, each several part collaborative work ability and the electrical network of electrical network significantly, reduces simultaneously impact and raising economic growth on environment.
Yet, to carry out information communication frequently between user and energy supply end in intelligent grid, comprise that mainly the energy supply end is for the collection of the ammeter data of user in intelligent grid.Ammeter data can not be intercepted and captured and distort by the opponent, in case like this, the opponent just can change ammeter data.Ammeter data is to assess the electrical network load state and the use such as be used for charging, if particularly following electrical network adopts real time price, ammeter data is modified and can brings very large impact to charge.Institute thinks that the protection ammeter data do not intercepted and captured and distort by the opponent, and ammeter data need to carry out high-intensity encryption, this just makes ES(Energy Supplier, the energy supply end) need to be decrypted operation after receiving ammeter data.
In addition, due to the frequency range of utilized bandwidth 230MHz in intelligent grid, so many greatly than in traditional communication of the coverage of a residential quarter in intelligent grid.In general, almost there are several thousand SM(Smart Meter, intelligent meter reading device in a residential quarter), approximately need 10,000 channels.Therefore, if the encryption ammeter data that SM sends all decipher at ES place, the height that the computation complexity of ES will be very so.Give an example, adopting the decryption complexity of elliptic curve cryptography (ECC, Elliptic Curve Cryptography) is O (n
3), wherein n is the bit number of encrypted packets, supposes that there are 10,000 SM a residential quarter, each ammeter data bag size is 160 bits, and namely n=160, can calculate SM data thus, if the SM data of the whole residential quarter of ES deciphering, computation complexity is 10,000*160
3=4.096*10
10So, if the data that all SM send all by its deciphering, will cost a lot of money portion of time and computing capability of ES is decrypted operation so.
Therefore, how to provide a kind of ammeter data gathering system and method, can guarantee the safety of ammeter data, can reduce again the decryption complexity at ES place, become those skilled in the art's problem demanding prompt solution.
Summary of the invention
The object of the present invention is to provide a kind of ammeter data gathering system and method, solving in existing ammeter data gathering system and method, the high problem of decryption complexity at ES place.
For solving the problems of the technologies described above, the invention provides a kind of ammeter data gathering system, comprising: N intelligent meter reading device, data collector and energy supply end, wherein,
Described N intelligent meter reading device is in order to produce N ammeter data, wherein, and N 〉=2; And N ammeter data encrypted, obtain N message; And N message is sent to data collector;
Described data collector is in order to decipher N message; And N message of deciphering is encoded, and choose M message of encoding and be encrypted, N＞M wherein, M 〉=1; And the message of M coding and the message of encrypting and N-M coding is sent to the energy supply end;
The message of described energy supply end in order to decipher M coding and to encrypt; And N coded message of decoding, obtain N ammeter data.
Optionally, in described ammeter data gathering system, described data collector sends to the energy supply end to comprise the message of M coding and the message of encrypting and N-M coding:
Described data collector is divided into a plurality of packets with the message of M coding and the message of encrypting and N-M coding, and each packet sends to the energy supply end by different channels.
Optionally, in described ammeter data gathering system, described data collector sends to the energy supply end to comprise the message of M coding and the message of encrypting and N-M coding:
Described data collector is divided into a plurality of packets with the message of M coding and the message of encrypting and N-M coding, and each packet is not sending to the energy supply end in the same time.
Optionally, in described ammeter data gathering system, each packet sends to the energy supply end by different paths.
Optionally, in described ammeter data gathering system, described data collector utilizes the stochastic linear coding that N message of deciphering is encoded.
Optionally, in described ammeter data gathering system, described data collector utilizes the PKI of energy supply end that the message of choosing M coding is encrypted.
The present invention also provides a kind of ammeter data collection method, comprising:
N intelligent meter reading device produces N ammeter data, wherein, and N 〉=2; And N ammeter data encrypted, obtain N message; And N message is sent to data collector;
N message of data collector deciphering; And N message of deciphering is encoded, and choose M message of encoding and be encrypted, N＞M wherein, M 〉=1; And the message of M coding and the message of encrypting and N-M coding is sent to the energy supply end;
M coding of energy supply end deciphering and the message of encrypting; And N coded message of decoding, obtain N ammeter data.
Optionally, in described ammeter data collection method, data collector sends to the energy supply end to comprise the message of M coding and the message of encrypting and N-M coding:
Data collector is divided into a plurality of packets with the message of M coding and the message of encrypting and N-M coding, and each packet sends to the energy supply end by different channels.
Optionally, in described ammeter data collection method, data collector sends to the energy supply end to comprise the message of M coding and the message of encrypting and N-M coding:
Data collector is divided into a plurality of packets with the message of M coding and the message of encrypting and N-M coding, and each packet is not sending to the energy supply end in the same time.
Optionally, in described ammeter data collection method, each packet sends to the energy supply end by different paths.
Optionally, in described ammeter data collection method, data collector utilizes the stochastic linear coding that N message of deciphering is encoded.
Optionally, in described ammeter data collection method, data collector utilizes the PKI of energy supply end that the message of choosing M coding is encrypted.
In ammeter data gathering system provided by the invention and method, be encrypted by N message of deciphering being encoded and choosing M message of encoding, thus, both guaranteed the safety of communication data (being ammeter data); Simultaneously, the message because the ES place only need decipher M coding and encrypt has reduced again the decryption complexity at ES place.
Description of drawings
Fig. 1 is the schematic diagram of the ammeter data gathering system of the embodiment of the present invention;
Fig. 2 is the schematic flow sheet of the ammeter data collection method of the embodiment of the present invention;
Fig. 3 is the comparison diagram of the ES computation complexity of the ES computation complexity of the embodiment of the present invention and prior art.
Embodiment
Below in conjunction with the drawings and specific embodiments, ammeter data gathering system and the method that the present invention proposes is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts very the form of simplifying and all uses non-ratio accurately, only in order to convenient, the purpose of the aid illustration embodiment of the present invention lucidly.
Please refer to Fig. 1 and Fig. 2, wherein, Fig. 1 is the schematic diagram of the ammeter data gathering system of the embodiment of the present invention; Fig. 2 is the schematic flow sheet of the ammeter data collection method of the embodiment of the present invention.
As shown in Figure 1, in the present embodiment, the ammeter data gathering system comprises: N intelligent meter reading device is respectively at this: SM1, SM2 ... SM
N, wherein, N 〉=2; Data collector (DA) and energy supply end (ES), wherein, described N intelligent meter reading device is connected with described data collector signal, and described data collector is connected with described energy supply end signal.
Concrete, described N intelligent meter reading device be in order to produce N ammeter data, wherein, and N 〉=2; And N ammeter data encrypted, obtain N message; And N message is sent to data collector; Described data collector is in order to decipher N message; And N message of deciphering is encoded, and choose M message of encoding and be encrypted, N＞M wherein, M 〉=1; And the message of M coding and the message of encrypting and N-M coding is sent to the energy supply end; The message of described energy supply end in order to decipher M coding and to encrypt; And N coded message of decoding, obtain N ammeter data.
Accordingly, described ammeter data collection method specifically comprises the steps:
N intelligent meter reading device produces N ammeter data, wherein, and N 〉=2; And N ammeter data encrypted, obtain N message; And N message is sent to data collector;
N message of data collector deciphering; And N message of deciphering is encoded, and choose M message of encoding and be encrypted, N＞M wherein, M 〉=1; And the message of M coding and the message of encrypting and N-M coding is sent to the energy supply end;
M coding of energy supply end deciphering and the message of encrypting; And N coded message of decoding, obtain N ammeter data.
Concrete, please refer to Fig. 2, described ammeter data collection method mainly comprises following four-stage: the phase I is that SM(comprises at this: SM1, SM2 ... SM
N) send it ammeter data to DA, second stage is that DA processes the data of collecting, the phase III is that the data after DA will process send to ES, the last stage is exactly that ES processes the data of receiving and obtains source data.
Phase I: SM(comprises at this: SM1, SM2 ... SM
N) data (being N message) after encrypting ammeter data and then encrypting send to DA;
Second stage: DA deciphers the data (being N message) that receive and the data after all deciphering (being N message) is carried out the stochastic linear coding.At this, suppose that source data is m
1, m
2... m
N, the data after coding are p
1, p
2... p
N, α
i,jBe stochastic linear coding coefficient (wherein, 1≤i, j≤N), the stochastic linear cataloged procedure is as follows,
N the coding after data be divided into two classes: M(wherein, N＞M, M 〉=1; Preferably, M＜＜N) after individual coding and with the data (message) of the public key encryption of ES; Other (being N-M the only message of coding).
Phase III: the message after the DA transmission processing is to ES.Message after processing comprises the message of M coding and the message of encrypting and N-M coding.At this one-phase, the message after DA can will process by different approaches sends to ES.Such as, message after processing is divided into a plurality of packets, each packet is by different channels or do not sending to ES by different paths in the same time, so just can strengthen the difficulty that the opponent collects all data, if and the opponent can not collect the data after all processing, its just can not acquisition the source ammeter data.
M coding of quadravalence section: ES deciphering and the message of encrypting are then with them with the source data (being N ammeter data) of decoding together and just can obtain all SM of the data after using the coding of encryption.
For example, N SM sends ammeter data to DA, supposes that the source ammeter data is m
1, m
2... m
N, each ammeter data is the n bit.These ammeter datas are encrypted with the PKI of DA before transmission, and then the private key with oneself is decrypted when DA receives.Afterwards, DA carries out following stochastic linear coding to all data of collecting,
Then DA choose M the coding after data be encrypted, such as M=2, DA chooses p
1And p
3Be encrypted and then obtain p'
1And p'
3New packet comprises p '
1, p
2, p '
3, p
4... p
NAnd corresponding stochastic linear code coefficient.When ES receives after all processing after data, it can decipher p'
1And p'
3Obtain p
1And p
3, p then decodes
1, p
2... p
NObtain m
1, m
2... m
NFor the data of deciphering n bit, adopting the computation complexity of ECC algorithm is O (n
3), adopting the computation complexity of Coppersmith-Winograd algorithm for N data of decoding is O (N
2.3737).If all N ammeter data all adopts and encrypt and in ES place's deciphering, this be referred to as " the full use encrypted " scheme, this moment, the computation complexity of ES was N*O (n
3).And in the scheme of the present embodiment, the computation complexity of ES is M*O (n
3)+O (N
2.3737).Due to M＜N＜n, special, M＜＜N＜n, so (N-M) * Ο (n
3)＞Ο (N
2.3737), so the scheme carried of the present embodiment can reduce the computation complexity of ES.
Please refer to Fig. 3, it is the comparison diagram of the ES computation complexity of the ES computation complexity of the embodiment of the present invention and prior art.Suppose n=160, M=2, N gets 100 from 10.The computation complexity of the ES of the present embodiment comprises two parts: decoding complex degree and decryption complexity., the computation complexity of the ES that " entirely uses encryption " is N * 160
3, the computation complexity of the ES of the present embodiment is 2 * 160
3+ N
2.3737Can see, the scheme of the present embodiment just can make the ES reduction surpass 90% computation complexity when N=30.
Foregoing description is only the description to preferred embodiment of the present invention, is not any restriction to the scope of the invention, and any change, modification that the those of ordinary skill in field of the present invention is done according to above-mentioned disclosure all belong to the protection range of claims.
Claims (12)
1. an ammeter data gathering system, is characterized in that, comprising: N intelligent meter reading device, data collector and energy supply end, wherein,
Described N intelligent meter reading device is in order to produce N ammeter data, wherein, and N 〉=2; And N ammeter data encrypted, obtain N message; And N message is sent to data collector;
Described data collector is in order to decipher N message; And N message of deciphering is encoded, and choose M message of encoding and be encrypted, N＞M wherein, M 〉=1; And the message of M coding and the message of encrypting and N-M coding is sent to the energy supply end;
The message of described energy supply end in order to decipher M coding and to encrypt; And N coded message of decoding, obtain N ammeter data.
2. ammeter data gathering system as claimed in claim 1, is characterized in that, described data collector sends to the energy supply end to comprise the message of M coding and the message of encrypting and N-M coding:
Described data collector is divided into a plurality of packets with the message of M coding and the message of encrypting and N-M coding, and each packet sends to the energy supply end by different channels.
3. ammeter data gathering system as claimed in claim 1, is characterized in that, described data collector sends to the energy supply end to comprise the message of M coding and the message of encrypting and N-M coding:
Described data collector is divided into a plurality of packets with the message of M coding and the message of encrypting and N-M coding, and each packet is not sending to the energy supply end in the same time.
4. ammeter data gathering system as claimed in claim 3, is characterized in that, each packet sends to the energy supply end by different paths.
5. ammeter data gathering system as described in any one in claim 1 to 4, is characterized in that, described data collector utilizes the stochastic linear coding that N message of deciphering is encoded.
6. ammeter data gathering system as described in any one in claim 1 to 4, is characterized in that, described data collector utilizes the PKI of energy supply end that the message of choosing M coding is encrypted.
7. an ammeter data collection method, is characterized in that, comprising:
N intelligent meter reading device produces N ammeter data, wherein, and N 〉=2; And N ammeter data encrypted, obtain N message; And N message is sent to data collector;
N message of data collector deciphering; And N message of deciphering is encoded, and choose M message of encoding and be encrypted, N＞M wherein, M 〉=1; And the message of M coding and the message of encrypting and N-M coding is sent to the energy supply end;
M coding of energy supply end deciphering and the message of encrypting; And N coded message of decoding, obtain N ammeter data.
8. ammeter data collection method as claimed in claim 7, is characterized in that, data collector sends to the energy supply end to comprise the message of M coding and the message of encrypting and N-M coding:
Data collector is divided into a plurality of packets with the message of M coding and the message of encrypting and N-M coding, and each packet sends to the energy supply end by different channels.
9. ammeter data collection method as claimed in claim 7, is characterized in that, data collector sends to the energy supply end to comprise the message of M coding and the message of encrypting and N-M coding:
Data collector is divided into a plurality of packets with the message of M coding and the message of encrypting and N-M coding, and each packet is not sending to the energy supply end in the same time.
10. ammeter data collection method as claimed in claim 9, is characterized in that, each packet sends to the energy supply end by different paths.
11. ammeter data collection method as described in any one in claim 7 to 10 is characterized in that, data collector utilizes the stochastic linear coding that N message of deciphering is encoded.
12. ammeter data collection method as described in any one in claim 7 to 10 is characterized in that, data collector utilizes the PKI of energy supply end that the message of choosing M coding is encrypted.
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| CN2013100957102A CN103152358A (en) | 2013-03-22 | 2013-03-22 | Electricity meter data collecting system and method |
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|---|---|---|---|
| CN2013100957102A CN103152358A (en) | 2013-03-22 | 2013-03-22 | Electricity meter data collecting system and method |
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Cited By (1)
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| CN110248328A (en) * | 2018-03-10 | 2019-09-17 | 代傲表计系统有限公司 | Method for running communication system |
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| CN101256711A (en) * | 2008-03-13 | 2008-09-03 | 西安理工大学 | Electric power carrier wave remote meter reading method |
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Application publication date: 20130612 |