CN109001565A - Distributed generation resource equipment for monitoring power quality - Google Patents
Distributed generation resource equipment for monitoring power quality Download PDFInfo
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- CN109001565A CN109001565A CN201810668085.9A CN201810668085A CN109001565A CN 109001565 A CN109001565 A CN 109001565A CN 201810668085 A CN201810668085 A CN 201810668085A CN 109001565 A CN109001565 A CN 109001565A
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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
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- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of distributed generation resource equipment for monitoring power quality, including data monitoring node etc.；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.It is filled more particularly to a kind of distributed generation resource electric energy quality monitoring
It sets.
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 equipment for monitoring power quality.
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.
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, photographing module is integrated on the data monitoring node.
Further, it is equipped with ethernet signal acquisition module on the data monitoring node and unloading node, for acquiring
Ethernet signal between data monitoring node and unloading node；A/D conversion module, for converting Ethernet analog signal to
Digital signal；Pre- storing module, for prestoring local preamble sequence；Matching module, for by the list entries of the digital signal
It is matched with local preamble sequence, if exact matching, illustrates to receive ethernet frame signal, output confirmation pulse；Touching
Module is sent out, for receiving the confirmation pulse of matching module output, and is delivered to calibration record module as trigger signal；Calibration
Logging modle receives trigger signal, triggers current precise time and arrive time tranfer for calibrating to local zone time
Electric energy quality monitoring center.
Further, the matching module further includes delay timing generation module, for distinguishing when receiving digital signal
Record carves character string, previous frame moment character string and local frame head moment character string when the current frame, calculates previous frame
It the difference T1 of moment character string and local frame head moment character string and carves character string and previous frame moment when the current frame
The difference T2 of character string, if T1 < T2, the delay data of successful match is T1, and so on, when the number for receiving new is believed
Number when carry out above-mentioned Ether frame Signal Matching and obtain the delay data of a new successful match, the delay number of all successful match
According to collection be combined into a delay timing, by the delay timing be transferred to electric energy quality monitoring center for analysis data packet in net
The delay rule and later period training and learning transmitted on line use.
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 schematic structural view of the invention.
Specific embodiment
Below in conjunction with specific embodiment, the present invention is further illustrated:
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, the delay data of successful match is 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.
The distributed generation resource equipment for monitoring power quality further includes inquiry system, and inquiry system includes:
Identifying code generation module is sent to work for the historical data of each distributed generation resource to be generated Message Authentication Code
The laptop of personnel；
Rights encryption module receives Message Authentication Code for staff, and will return after the encryption of the search access right of acquisition
To electric energy quality monitoring center；
The plaintext met in search access right is encrypted and is passed for the search access right according to staff by plaintext encrypting module
It is defeated by the laptop of staff；
Plain text authentication module, for calculating required plaintext mi, and verify mi, wherein i is the historical data that staff needs
Call number, miFor i-th historical data of electric energy quality monitoring center storage.
The upper outer access at the electric energy quality monitoring center has storage medium, and the first safe mould is arranged in the storage medium
The second security module is arranged on the hard disk in the host at the electric energy quality monitoring center, for accessing the first security module in block；
Whether the electric energy quality monitoring center further includes judgment module, for judging the address of Message Authentication Code data to be written
In one security module, if the address of data to be written, in the first security module, the second security module reads power quality prison
One key of origination message identifying code data and generation that SRAM fixing address section generates in the host of measured center；If not existing,
Data are write direct, the data that the second security module is written into the first security module are encrypted with key, and will be encrypted close
Text the first security module of write-in.
The electric energy quality monitoring center further includes removing module, for generating the historical data of each distributed generation resource
Message Authentication Code, which is sent to after the laptop of staff, to be destroyed the second security module and is written into the first security module
Data encrypt the key generated with key.
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.
After the historical data generation Message Authentication Code of each distributed generation resource is sent to the laptop of staff
It destroys the second security module and is written into the key that the data of the first security module are generated with key encryption.
Identifying code generation module is specifically used for the historical data of distributed generation resource each in electric energy quality monitoring center is raw
H is ultimately generated for each historical data to be mapped as to the value of a regular length at message hash value1L Hn, as message
Identifying 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.
Rights encryption module is specifically used for staff to gather around there are two parameter being i, qi, 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；Staff chooses (t, hi), utilize elliptic curve
Public key cryptosyst encryption generates encrypted authority credentials jmdi；Wherein, jmdi=tP+hi·P；P is a bit on elliptic curve, should
Point is the basic point that elliptic curve cryptosystem generates, and t is random integers；Staff's laptop is by the jmd of generationiIt sends
Give electric energy quality monitoring center.
Plaintext encrypting module is specifically used for electric energy quality monitoring center and calculates the first data without clear-text message
Hash value h1；Electric energy quality monitoring center calculation S1=m1+jmdi-h1·P；Wherein, m1It is that electric energy quality monitoring center is stored
First data；h1GP is h1Through the encrypted data of elliptic curve cryptosystem；S1It indicates the 1st in electric energy quality monitoring center
Encrypted value corresponding to data.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；Power quality
Monitoring center is by message parameter (S1...Sn) it is sent to staff.
Plain text authentication module is specifically used for plaintext mi=Si-t·P；Wherein SiI-th is indicated in electric energy quality monitoring center
Encrypted value corresponding to data, t are random integers, and P point is the basic point that elliptic curve cryptosystem generates；Utilize generation
Message Authentication Code Hi, verify miIt is whether correct.
A kind of distributed generation resource electric energy quality monitoring method, comprising 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 further includes after being matched with local preamble sequence are as follows: 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
Column and the difference T2 of previous frame moment character string, if T1 < T2, 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.
Claims (5)
1. a kind of distributed generation resource equipment for monitoring power quality, including following part: data monitoring node, for real-time detection point
The power quality data index of cloth power supply, and the power quality data index that will test is transferred to unloading node；Unloading section
Point is received, stored and is uploaded for the power quality data index to distributed generation resource；Electric energy quality monitoring center,
For receiving and handling the power quality data index of distributed generation resource and to all distributed generation resource electric energy in monitoring network segment
The concentration supervision and management of quality index；Mobile device, for realizing all distributed generation resource electric energy in remote inquiry monitoring network segment
Quality state, it is characterised in that carry out communication interaction between the data monitoring node and unloading node, the unloading node with
Electric energy quality monitoring center carries out communication interaction, and the electric energy quality monitoring center and mobile device carry out communication interaction.
2. distributed generation resource equipment for monitoring power quality according to claim 1, 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
Carry out communication interaction by 4G network, the electric energy quality monitoring center and mobile device by wireless WiFi or Cloud Server into
Row communication interaction.
3. distributed generation resource equipment for monitoring power quality according to claim 2, it is characterised in that the data monitoring section
Photographing module is integrated on point.
4. distributed generation resource equipment for monitoring power quality according to claim 3, it is characterised in that the data monitoring section
Point and unloading node on be equipped with ethernet signal acquisition module, for acquire between data monitoring node and unloading node with
Too net signal；A/D conversion module, for converting digital signal for Ethernet analog signal；Pre- storing module, for prestoring local
Preamble sequence；Matching module, for matching the list entries of the digital signal with local preamble sequence, if completely
Matching, then explanation receives ethernet frame signal, output confirmation pulse；Trigger module, for receiving matching module output really
Recognize pulse, and is delivered to calibration record module as trigger signal；Calibration record module, for carrying out school to local zone time
Standard receives trigger signal, triggers current precise time and by time tranfer to electric energy quality monitoring center.
5. distributed generation resource equipment for monitoring power quality according to claim 4, it is characterised in that the matching module is also
Including the timing generation module that is delayed, character string, previous frame are carved when the current frame for being recorded respectively when receiving digital signal
Moment character string and local frame head moment character string calculate previous frame moment character string and local frame head moment word
The difference T1 for according with sequence and the difference T2 for carving character string and previous frame moment character string when the current frame are matched if T1 < T2
Successful delay data is T1, and so on, above-mentioned Ether frame Signal Matching is carried out when receiving new digital signal to be obtained
The delay data of a new successful match, the collection of the delay data of all successful match is combined into a delay timing, by institute
It states delay timing and is transferred to delay rule and later period training that electric energy quality monitoring center is transmitted on cable for analysis data packet
Instruction study uses.
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| CN201810668085.9A CN109001565A (en) | 2018-06-26 | 2018-06-26 | Distributed generation resource equipment for monitoring power quality |
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|---|---|---|---|
| CN201810668085.9A CN109001565A (en) | 2018-06-26 | 2018-06-26 | Distributed generation resource equipment for monitoring power quality |
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| CN201810668085.9A Pending CN109001565A (en) | 2018-06-26 | 2018-06-26 | Distributed generation resource equipment for monitoring power quality |
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| CN108051664A (en) * | 2017-11-15 | 2018-05-18 | 全球能源互联网研究院有限公司 | A kind of equipment for monitoring power quality |
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2018
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Patent Citations (7)
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|---|---|---|---|---|
| WO2001046925A1 (en) * | 1999-12-22 | 2001-06-28 | Cellnet Data Systems, Inc. | A meter to internet pathway |
| CN201368905Y (en) * | 2009-03-06 | 2009-12-23 | 深圳市双合电脑系统股份有限公司 | Power quality monitoring and recording device of power system |
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Application publication date: 20181214 |