CN108924117A - Electric energy quality monitoring querying method - Google Patents

Electric energy quality monitoring querying method Download PDF

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Publication number
CN108924117A
CN108924117A CN201810669595.8A CN201810669595A CN108924117A CN 108924117 A CN108924117 A CN 108924117A CN 201810669595 A CN201810669595 A CN 201810669595A CN 108924117 A CN108924117 A CN 108924117A
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Prior art keywords
electric energy
energy quality
data
quality monitoring
monitoring center
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CN201810669595.8A
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Chinese (zh)
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CN108924117B (en
Inventor
包莉丽
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Baoding Trillion Micro Software Technology Co ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00Network architectures or network communication protocols for network security
    • H04L63/04Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/40Testing power supplies
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00Electric signal transmission systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00Network architectures or network communication protocols for network security
    • H04L63/10Network architectures or network communication protocols for network security for controlling access to devices or network resources
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/02Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H04L67/025Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/30Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
    • H04L9/3066Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy involving algebraic varieties, e.g. elliptic or hyper-elliptic curves

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Algebra (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention discloses a kind of electric energy quality monitoring querying methods, acquire the power quality index of the distributed generation resource respectively monitored in real time including each data monitoring node, and power quality index is periodically sent to corresponding unloading node;The present invention takes into account the safety at both inquiry end and electric energy quality monitoring center, in the extensive dynamic expansion of data, not because encryption and decryption lead to system Caton.Data monitoring node can accurately obtain the correct time that network signal reaches a certain node in network, there is preferable fault-tolerance to the loss situation of the ether frame signal from unlike signal received, it improves and effectively improves the real-time to distributed generation resource electric energy quality monitoring, it can guarantee the data acquisition in a degree of extreme weather, transmission, save, improve power supply reliability.

Description

Electric energy quality monitoring querying method
Technical field
The invention belongs to power equipment monitoring technical fields.More particularly to a kind of electric energy quality monitoring querying method.
Background technique
Distributed generation resource is as a kind of energy-saving and environment-friendly novel power generation device, but there are many distributed generation resource grid entry point, and And it is most of be distributed in the severe remote districts of weather conditions, position distribution is also more complicated, gives data monitoring especially signal Transmission and safety bring very big difficulty.
Summary of the invention
The purpose of the invention is to overcome above-mentioned deficiency to provide a kind of electric energy quality monitoring querying method.
A kind of electric energy quality monitoring querying method, includes the following steps:
001, each data monitoring node acquires the power quality index of the distributed generation resource respectively monitored in real time, and by electric energy Quality index is periodically sent to corresponding unloading node;
002, unloading node is after the successful signal of communication of networking for receiving electric energy quality monitoring center, in response to electric energy matter The signal of communication for measuring monitoring center, is sent to electric energy quality monitoring center for received power quality index;
003, electric energy quality monitoring center encrypts historical data after saving historical data, and staff can pass through notes The historical data saved in electric energy quality monitoring center is decrypted in this computer remote, and browses access historical data.
Further, following steps are specifically included in the step 003:
The historical data of each distributed generation resource is generated Message Authentication Code and is sent to work by 031. electric energy quality monitoring center Make the laptop of personnel;
The laptop of 032. staff receives Message Authentication Code, and will be back to after the encryption of the search access right of acquisition Electric energy quality monitoring center;
033. electric energy quality monitoring center encrypts the plaintext met in search access right according to the search access right of staff It is transferred to the laptop of staff;
034. calculates required plaintext mi, and verify mi, wherein i is the call number for the historical data that staff needs, miFor I-th historical data of electric energy quality monitoring center storage.
Further, further comprising the steps of before the step 031:
Storage medium is accessed on the host at electric energy quality monitoring center, the first security module is set in storage medium, Second security module is set on the hard disk in the host at electric energy quality monitoring center, for accessing the first security module;
Judge the address of Message Authentication Code data to be written whether in the first security module;If the address of data to be written In the first security module, then carry out in next step;If not existing, data are write direct;
Second security module reads the origination message that SRAM fixing address section generates in the host at electric energy quality monitoring center Identifying code data simultaneously generate a key;
The data that second security module is written into the first security module are encrypted with key, and encrypted ciphertext is written First security module.
Further, the historical data of each distributed generation resource is generated into Message Authentication Code in the step 031 and is sent to work The data key encryption generation that the second security module is written into the first security module is destroyed after making the laptop of personnel Key.
Advantages of the present invention has:The safety for taking into account both inquiry end and electric energy quality monitoring center, is moved on a large scale in data When state extends, not because encryption and decryption lead to system Caton.Data monitoring node can accurately obtain network signal arrival The correct time of a certain node in network has preferably the loss situation of the ether frame signal from unlike signal received Fault-tolerance improves and effectively improves the real-time to distributed generation resource electric energy quality monitoring, it is ensured that a degree of Data acquisition, transmission, preservation in extreme weather, improve power supply reliability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of equipment for monitoring power quality of the present invention.
Specific embodiment
Below in conjunction with specific embodiment, the present invention is further illustrated:
A kind of electric energy quality monitoring querying method, includes the following steps:
001, each data monitoring node acquires the power quality index of the distributed generation resource respectively monitored in real time, and by electric energy Quality index is periodically sent to corresponding unloading node;
002, unloading node is after the successful signal of communication of networking for receiving electric energy quality monitoring center, in response to electric energy matter The signal of communication for measuring monitoring center, is sent to electric energy quality monitoring center for received power quality index;
003, electric energy quality monitoring center encrypts historical data after saving historical data, and staff can pass through notes The historical data saved in electric energy quality monitoring center is decrypted in this computer remote, and browses access historical data.
Following steps are specifically included in the step 003:
The historical data of each distributed generation resource is generated Message Authentication Code and is sent to work by 031. electric energy quality monitoring center Make the laptop of personnel;
The laptop of 032. staff receives Message Authentication Code, and will be back to after the encryption of the search access right of acquisition Electric energy quality monitoring center;
033. electric energy quality monitoring center encrypts the plaintext met in search access right according to the search access right of staff It is transferred to the laptop of staff;
034. calculates required plaintext mi, and verify mi, wherein i is the call number for the historical data that staff needs, miFor I-th historical data of electric energy quality monitoring center storage.
It is further comprising the steps of before the step 031:
Storage medium is accessed on the host at electric energy quality monitoring center, the first security module is set in storage medium, Second security module is set on the hard disk in the host at electric energy quality monitoring center, for accessing the first security module;
Judge the address of Message Authentication Code data to be written whether in the first security module;If the address of data to be written In the first security module, then carry out in next step;If not existing, data are write direct;
Second security module reads the origination message that SRAM fixing address section generates in the host at electric energy quality monitoring center Identifying code data simultaneously generate a key;
The data that second security module is written into the first security module are encrypted with key, and encrypted ciphertext is written First security module.
The historical data of each distributed generation resource is generated into Message Authentication Code in the step 031 and is sent to staff's The second security module is destroyed after laptop is written into the key that the data of the first security module are generated with key encryption.
Step 031 includes the following steps:
Step 0311:The historical data of distributed generation resource each in electric energy quality monitoring center is generated into message hash value, For each historical data to be mapped as to the value of a regular length, H is ultimately generated1L Hn, as Message Authentication Code;
Wherein, Hj←H(j,mj,qj) generate the message authentication code H for carrying cleartext informationj, j expression j-th strip information, mjTable Show the plaintext of j-th strip message, qjIndicate permission needed for reading j-th strip message, j=1,2 ..., n, n represents electric energy quality monitoring The historical data number of central store.
Step 032 includes the following steps:
Step 0321:It is i, q that staff's laptop, which is gathered around there are two parameter,i, calculate without cleartext information Hash value hi
Wherein, hi←H1(i,qi) generate without cleartext information message authentication code hi:Wherein i is staff's needs Historical data call number, qiFor permission needed for i-th information of reading;
Step 0322:Staff chooses (t, hi), encrypted permission is generated using elliptic curve cryptosystem encryption Value jmdi
Wherein, jmdi=tP+hi·P;P is a bit on elliptic curve, which is the base that elliptic curve cryptosystem generates Point, t are random integers;
Step 0323:Staff's laptop is by the jmd of generationiIt is sent to electric energy quality monitoring center.
Step 033 includes the following steps:
Step 0331:First data is calculated the hash value h without clear-text message by electric energy quality monitoring center1
Step 0332:Electric energy quality monitoring center calculation S1=m1+jmdi-h1·P;Wherein, m1It is in electric energy quality monitoring Feel the first data of storage;h1GP is h1Through the encrypted data of elliptic curve cryptosystem;S1It indicates in electric energy quality monitoring Encrypted value corresponding to 1st data in the heart.
Step 0333:And so on, the second data is successively calculated to a last data, is calculated S2...Sj....Sn, wherein SjIndicate encrypted value corresponding to j-th strip data in electric energy quality monitoring center;
Step 0334:Electric energy quality monitoring center is by message parameter (S1...Sn) it is sent to staff.
Plaintext m in step 034i=Si-t·P;Wherein SiIt indicates in electric energy quality monitoring center corresponding to the i-th data Encrypted value, t is random integers, and P point is the basic point that elliptic curve cryptosystem generates;Utilize the Message Authentication Code of generation Hi, verify miIt is whether correct.
Historical data includes the text and column statistical chart of data.
Communication interaction, the unloading node are carried out by ethernet netting twine between the data monitoring node and unloading node Communication interaction, the electric energy quality monitoring center and laptop are carried out by 4G network between electric energy quality monitoring center Communication interaction is carried out by internet.
Power quality index is periodically sent to corresponding unloading node further comprising the steps of in the step 002:Point Not Cai Ji data monitoring node and unloading node ethernet signal;Digital signal is converted by Ethernet analog signal;It prestores Local preamble sequence;The list entries of the digital signal is matched with local preamble sequence, if exact matching, says It is bright to receive ethernet frame signal, output confirmation pulse;The confirmation pulse of output is received, and as trigger signal;To local Time is calibrated, and triggers current precise time and by time tranfer to electric energy quality monitoring center;In electric energy quality monitoring The heart compares the ethernet frame signal arrival time of data monitoring node and unloading node, obtains data monitoring node and unloading node Between network signal propagation delay time.
The list entries by the digital signal matched with local preamble sequence after further include for:When receiving When digital signal, records carve character string, previous frame moment character string and local frame head moment character when the current frame respectively Sequence calculates the difference T1 and the Fu Xu that carves characters when the current frame of previous frame moment character string and local frame head moment character string The difference T2 of column and previous frame moment character string, if T1<T2, then the delay data of successful match is T1, and so on, when connecing Above-mentioned Ether frame Signal Matching is carried out when receiving new digital signal obtains the delay data of a new successful match, all Collection with successful delay data is combined into a delay timing, and the delay timing is transferred to electric energy quality monitoring center and is supplied The delay rule and later period training and learning that analysis data packet is transmitted on cable use.
Wherein:Data monitoring node for the power quality data index of real-time detection distributed generation resource, and will test Power quality data index be transferred to unloading node;Unloading node, for the power quality data index to distributed generation resource It received, stored and is uploaded;Electric energy quality monitoring center, for receiving and handling the power quality data of distributed generation resource Index and to monitoring network segment in all distributed generation resource power quality indexs concentration supervision and management;Laptop is used for Realize all distributed generation resource power quality states in remote inquiry monitoring network segment, the data monitoring node and unloading node it Between carry out communication interaction, the unloading node and electric energy quality monitoring center carry out communication interaction, in the electric energy quality monitoring The heart and laptop carry out communication interaction.
Photographing module is integrated on the data monitoring node.

Claims (4)

1. a kind of electric energy quality monitoring querying method, it is characterised in that include the following steps:
001, each data monitoring node acquires the power quality index of the distributed generation resource respectively monitored in real time, and by power quality Index is periodically sent to corresponding unloading node;
002, unloading node is supervised after the successful signal of communication of networking for receiving electric energy quality monitoring center in response to power quality Received power quality index is sent to electric energy quality monitoring center by the signal of communication of measured center;
003, electric energy quality monitoring center encrypts historical data after saving historical data, and staff can pass through notebook electricity Brain is remotely decrypted the historical data saved in electric energy quality monitoring center, and browses access historical data.
2. electric energy quality monitoring querying method according to claim 1, it is characterised in that specifically included in the step 003 Following steps:
The historical data of each distributed generation resource is generated Message Authentication Code and is sent to work people by 031. electric energy quality monitoring center The laptop of member;
The laptop of 032. staff receives Message Authentication Code, and will be back to electric energy after the encryption of the search access right of acquisition Quality-monitoring center;
Search access right of the 033. electric energy quality monitoring center according to staff, the plaintext encrypted transmission that will meet in search access right To the laptop of staff;
034. calculates required plaintext mi, and verify mi, wherein i is the call number for the historical data that staff needs, miFor electric energy I-th historical data of quality-monitoring center storage.
3. electric energy quality monitoring querying method according to claim 2, it is characterised in that further include before the step 031 Following steps:
Storage medium is accessed on the host at electric energy quality monitoring center, the first security module is set in storage medium, in electricity The second security module is set on hard disk in the host at energy quality-monitoring center, for accessing the first security module;
Judge the address of Message Authentication Code data to be written whether in the first security module;If the address of data to be written is In one security module, then carry out in next step;If not existing, data are write direct;
Second security module reads the origination message verifying that SRAM fixing address section generates in the host at electric energy quality monitoring center Code data simultaneously generate a key;
The data that second security module is written into the first security module are encrypted with key, and encrypted ciphertext is written first Security module.
4. electric energy quality monitoring querying method according to claim 3, it is characterised in that will each divide in the step 031 The historical data of cloth power supply generates after Message Authentication Code is sent to the laptop of staff and destroys the second security module The data for being written into the first security module encrypt the key generated with key.
CN201810669595.8A 2018-06-26 2018-06-26 Power quality monitoring and inquiring method Active CN108924117B (en)

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