CN108872881A - Distributed generation resource electric energy quality monitoring method - Google Patents
Distributed generation resource electric energy quality monitoring method Download PDFInfo
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- CN108872881A CN108872881A CN201810669617.0A CN201810669617A CN108872881A CN 108872881 A CN108872881 A CN 108872881A CN 201810669617 A CN201810669617 A CN 201810669617A CN 108872881 A CN108872881 A CN 108872881A
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- electric energy
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
Abstract
The invention discloses a kind of distributed generation resource electric energy quality monitoring methods, including to the progress networking of data monitoring node, unloading node, electric energy quality monitoring center and mobile device；Data monitoring node of the present invention 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
Technical field
The invention belongs to power equipment monitoring technical fields.More particularly to a kind of distributed generation resource electric energy quality monitoring side
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 distributed generation resource electric energy quality monitoring method.
A kind of distributed generation resource electric energy quality monitoring method, includes the following steps：
001, networking is carried out to data monitoring node, unloading node, electric energy quality monitoring center and mobile device；
002, judge whether above-mentioned networking succeeds, if it is turn in next step, if otherwise returning to previous step continues networking
The step of；
003, 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；
004, 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；
005, electric energy quality monitoring center is by the power quality index of received each distributed generation resource and the standard that prestores
Power quality index range compares, and determines power index grade, judges which distributed generation resource in the currently monitored network segment
It needs to administer, such as improvement is needed to go to step 006, go to step 007 if not needing to administer；
006, the distributed generation resource that photographing module administers needs carries out storage video recording, then goes to step 008；
007, it does not need improvement and illustrates that electric energy quality monitoring net is normal, then go to step 008.
008, electric energy quality monitoring center encrypts historical data after saving historical data, and staff can pass through movement
Equipment is remotely decrypted the historical data saved in electric energy quality monitoring center, and browses access historical data.
Further, in the step 008 historical data include data text and column statistical chart.
Further, communication interaction is carried out by ethernet netting twine between the data monitoring node and unloading node, it is described
Communication interaction, the electric energy quality monitoring center and shifting are carried out by 4G network between unloading node and electric energy quality monitoring center
Dynamic equipment carries out communication interaction by wireless WiFi or Cloud Server.
Further, it further includes following that power quality index is periodically sent to corresponding unloading node in the step 003
Step：The ethernet signal of data monitoring node and unloading node is acquired respectively；Digital letter is converted by Ethernet analog signal
Number；Prestore local preamble sequence；The list entries of the digital signal is matched with local preamble sequence, if complete
Match, then explanation receives ethernet frame signal, output confirmation pulse；The confirmation pulse of output is received, and as trigger signal；
Local zone time is calibrated, triggers current precise time and by time tranfer to electric energy quality monitoring center；Power quality
Monitoring center compares the ethernet frame signal arrival time of data monitoring node and unloading node, obtains data monitoring node and turns
Deposit the propagation delay time of network signal between node.
Further, further include after the list entries by the digital signal is matched with local preamble sequence for：
When receiving digital signal, records carve character string, previous frame moment character string and local frame head when the current frame respectively
Moment character string calculates the difference T1 and when the current frame of previous frame moment character string and local frame head moment character string
The difference T2 for carving character string and previous frame moment character string, if T1<T2, then the delay data of successful match is T1, with this
Analogize, above-mentioned Ether frame Signal Matching is carried out when receiving new digital signal and obtains the delay number of a new successful match
According to the collection of the delay data of all successful match is combined into a delay timing, and the delay timing is transferred to power quality
The delay rule and the use of later period training and learning that monitoring center transmits on cable for analysis data packet.
Advantages of the present invention has：Data monitoring node can accurately obtain network signal and reach a certain node in network
Correct time has preferable fault-tolerance to the loss situation of the ether frame signal from unlike signal received, improves and have
Effect improves the real-time to distributed generation resource electric energy quality monitoring, it is ensured that the data in a degree of extreme weather
Acquisition, saves transmission, improves 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 distributed generation resource electric energy quality monitoring method, includes the following steps：
001, networking is carried out to data monitoring node, unloading node, electric energy quality monitoring center and mobile device；
002, judge whether above-mentioned networking succeeds, if it is turn in next step, if otherwise returning to previous step continues networking
The step of；
003, 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；
004, 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；
005, electric energy quality monitoring center is by the power quality index of received each distributed generation resource and the standard that prestores
Power quality index range compares, and determines power index grade, judges which distributed generation resource in the currently monitored network segment
It needs to administer, such as improvement is needed to go to step 006, go to step 007 if not needing to administer；
006, the distributed generation resource that photographing module administers needs carries out storage video recording, then goes to step 008；
007, it does not need improvement and illustrates that electric energy quality monitoring net is normal, then go to step 008.
008, electric energy quality monitoring center encrypts historical data after saving historical data, and staff can pass through movement
Equipment is remotely decrypted the historical data saved in electric energy quality monitoring center, and browses access historical data.
Historical data includes the text and column statistical chart of data in the step 008.
Communication interaction, the unloading node are carried out by ethernet netting twine between the data monitoring node and unloading node
Communication interaction is carried out by 4G network between electric energy quality monitoring center, the electric energy quality monitoring center and mobile device are logical
It crosses wireless WiFi or Cloud Server carries out communication interaction.
Power quality index is periodically sent to corresponding unloading node further comprising the steps of in the step 003：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.
A kind of distributed generation resource equipment for monitoring power quality, including following part：Data monitoring node is used for real-time detection
The power quality data index of distributed generation resource, and the power quality data index that will test is transferred to unloading node；Unloading
Node is received, stored and is uploaded for the power quality data index to distributed generation resource；In electric energy quality monitoring
The heart, for receiving and handling the power quality data index of distributed generation resource and to distributed generation resource electricity all in monitoring network segment
The concentration supervision and management of energy quality index；Mobile device, for realizing all distributed generation resource electricity in remote inquiry monitoring network segment
Energy quality state, carries out communication interaction, the unloading node and power quality between the data monitoring node and unloading node
Monitoring center carries out communication interaction, and the electric energy quality monitoring center and mobile device carry out communication interaction.
Communication interaction, the unloading node are carried out by ethernet netting twine between the data monitoring node and unloading node
Communication interaction is carried out by 4G network between electric energy quality monitoring center, the electric energy quality monitoring center and mobile device are logical
It crosses wireless WiFi or Cloud Server carries out communication interaction.
Photographing module is integrated on the data monitoring node.
It is equipped with ethernet signal acquisition module on the data monitoring node and unloading node, for acquiring data monitoring
Ethernet signal between node and unloading node；A/D conversion module, for converting digital letter for Ethernet analog signal
Number；Pre- storing module, for prestoring local preamble sequence；Matching module, for by the list entries of the digital signal and local
Preamble sequence is matched, if exact matching, illustrates to receive ethernet frame signal, output confirmation pulse；Trigger module,
For receiving the confirmation pulse of matching module output, and calibration record module is delivered to as trigger signal；Calibration record mould
Block receives trigger signal for calibrating to local zone time, triggers current precise time and by time tranfer to electric energy matter
Measure monitoring center.
The matching module further includes delay timing generation module, for when receiving digital signal, record to be worked as respectively
Previous frame moment character string, previous frame moment character string and local frame head moment character string, carve characters when calculating previous frame
It accords with the difference T1 of sequence and local frame head moment character string and carves character string and previous frame moment character sequence when the current frame
The difference T2 of column, if T1<T2, then the delay data of successful match be T1, and so on, when receiving new digital signal into
The above-mentioned Ether frame Signal Matching of row obtains the delay data of a new successful match, the collection of the delay data of all successful match
It is combined into a delay timing, the delay timing is transferred to electric energy quality monitoring center and is uploaded for analysis data packet in cable
Defeated delay rule and later period training and learning use.
Following steps are specifically included in the step 008：
The historical data of each distributed generation resource is generated Message Authentication Code and is sent to work by 081. electric energy quality monitoring center
Make the laptop of personnel；
The laptop of 082. 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；
083. 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；
084. 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 081：
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 081 includes the following steps：
Step 0811：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 082 includes the following steps：
Step 0821：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 0822：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 0823：Staff's laptop is by the jmd of generationiIt is sent to electric energy quality monitoring center.
Step 083 includes the following steps：
Step 0831：First data is calculated the hash value h without clear-text message by electric energy quality monitoring center1；
Step 0832：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 0833：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 0834：Electric energy quality monitoring center is by message parameter (S1...Sn) it is sent to staff.
Plaintext m in step 084i=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.
Claims (5)
1. a kind of distributed generation resource electric energy quality monitoring method, it is characterised in that include the following steps：
001, networking is carried out to data monitoring node, unloading node, electric energy quality monitoring center and mobile device；
002, judge whether above-mentioned networking succeeds, if it is turn in next step, if otherwise returning to the step that previous step continues networking
Suddenly；
003, 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；
004, 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；
005, electric energy quality monitoring center is by the power quality index of received each distributed generation resource and the standard electric energy that prestores
Quality index range compares, and determines power index grade, judges which distributed generation resource needs in the currently monitored network segment
It administers, such as improvement is needed to go to step 006, go to step 007 if not needing to administer；
006, the distributed generation resource that photographing module administers needs carries out storage video recording, then goes to step 008；
007, it does not need improvement and illustrates that electric energy quality monitoring net is normal, then go to step 008.
008, electric energy quality monitoring center encrypts historical data after saving historical data, and staff can pass through mobile device
Remotely the historical data saved in electric energy quality monitoring center is decrypted, and browses access historical data.
2. distributed generation resource electric energy quality monitoring method according to claim 1, it is characterised in that gone through in the step 008
History data include the text and column statistical chart of data.
3. distributed generation resource electric energy quality monitoring method according to claim 2, it is characterised in that the data monitoring section
Communication interaction is carried out by ethernet netting twine between point and unloading node, between the unloading node and electric energy quality monitoring center
Communication interaction is carried out by 4G network, the electric energy quality monitoring center and mobile device pass through wireless Wi F i or Cloud Server
Carry out communication interaction.
4. distributed generation resource electric energy quality monitoring method according to claim 3, it is characterised in that will in the step 003
It is further comprising the steps of that power quality index is periodically sent to corresponding unloading node：Data monitoring node and unloading are acquired respectively
The ethernet signal of node；Digital signal is converted by Ethernet analog signal；Prestore local preamble sequence；By the number letter
Number list entries matched with local preamble sequence, if exact matching, illustrate to receive ethernet frame signal, output
Confirm pulse；The confirmation pulse of output is received, and as trigger signal；Local zone time is calibrated, current essence is triggered
True time and by time tranfer to electric energy quality monitoring center；Compare data monitoring node and unloading section in electric energy quality monitoring center
The ethernet frame signal arrival time of point, obtain the propagation delay time of network signal between data monitoring node and unloading node.
5. distributed generation resource electric energy quality monitoring method according to claim 4, it is characterised in that described by the number
The list entries of signal matched with local preamble sequence after further include for：When receiving digital signal, record is worked as respectively
Previous frame moment character string, previous frame moment character string and local frame head moment character string, carve characters when calculating previous frame
It accords with the difference T1 of sequence and local frame head moment character string and carves character string and previous frame moment character sequence when the current frame
The difference T2 of column, if T1<T2, then the delay data of successful match be T1, and so on, when receiving new digital signal into
The above-mentioned Ether frame Signal Matching of row obtains the delay data of a new successful match, the collection of the delay data of all successful match
It is combined into a delay timing, the delay timing is transferred to electric energy quality monitoring center and is uploaded for analysis data packet in cable
Defeated delay rule and later period training and learning use.
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