CN108924116B - Power quality monitoring and inquiring system - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network 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
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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
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
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- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
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- H04L9/30—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
- H04L9/3066—Public 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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Abstract
The invention discloses a power quality monitoring and inquiring system, which comprises data monitoring nodes and the like; the invention gives consideration to the safety of both the query end and the power quality monitoring center, and does not cause system blockage due to encryption and decryption when data is dynamically expanded in a large scale. The data monitoring node can accurately acquire the accurate time of a network signal reaching a certain node in the network, has better fault tolerance on the loss condition of received Ethernet frame signals from different signals, improves and effectively improves the real-time performance of monitoring the power quality of the distributed power supply, can ensure the data acquisition, transmission and storage in extreme weather to a certain extent, and improves the power supply reliability.
Description
Technical Field
The invention belongs to the technical field of power equipment monitoring. In particular to a power quality monitoring inquiring party system.
Background
The distributed power supply serves as an energy-saving and environment-friendly novel power generation device, but the number of grid-connected points of the distributed power supply is large, most of the distributed power supply is distributed in remote areas with severe weather conditions, the position distribution is also complex, and great difficulty is brought to data monitoring, particularly to signal transmission and safety.
Disclosure of Invention
The invention aims to overcome the defects and provide a power quality monitoring and inquiring system.
A power quality monitoring and querying system comprises the following parts: the data monitoring node is used for detecting the electric energy quality data index of the distributed power supply in real time and transmitting the detected electric energy quality data index to the unloading node; the dump node is used for receiving, storing and uploading the electric energy quality data indexes of the distributed power supply; the power quality monitoring center is used for receiving and processing power quality data indexes of the distributed power supplies and carrying out centralized supervision and management on the power quality indexes of all the distributed power supplies in a monitoring network segment; the notebook computer is used for realizing remote inquiry and monitoring of the power quality states of all distributed power supplies in a network segment, and is characterized in that the data monitoring nodes and the unloading nodes are communicated and interacted through Ethernet cables, the unloading nodes and the power quality monitoring center are communicated and interacted through a 4G network, and the power quality monitoring center and the notebook computer are communicated and interacted through the Internet.
Further, the query system further comprises:
the verification code generation module is used for generating a message verification code from the historical data of each distributed power supply and sending the message verification code to a notebook computer of a worker;
the authority encryption module is used for receiving the message verification code by the staff, encrypting the obtained inquiry authority and transmitting the encrypted inquiry authority back to the power quality monitoring center;
the plaintext encryption module is used for encrypting and transmitting the plaintext which accords with the inquiry authority to a notebook computer of a worker according to the inquiry authority of the worker;
a plaintext verification module for calculating the required plaintext miAnd verify miWhere i is the index number of the historical data required by the staff, miAnd the ith historical data is stored for the power quality monitoring center.
Furthermore, a storage medium is connected to the upper part and the outer part of the power quality monitoring center, a first safety module is arranged in the storage medium, and a second safety module is arranged on a hard disk in a host of the power quality monitoring center and used for accessing the first safety module; the power quality monitoring center also comprises a judging module used for judging whether the address of the message authentication code data to be written is in the first safety module, if the address of the data to be written is in the first safety module, the second safety module reads the original message authentication code data generated by the SRAM fixed address segment in the host of the power quality monitoring center and generates a key; if not, the data is directly written in, the second security module encrypts the data to be written in the first security module by using the secret key, and writes the encrypted ciphertext in the first security module.
Further, the power quality monitoring center further comprises a deleting module, wherein the deleting module is used for generating a message verification code from the historical data of each distributed power supply and sending the message verification code to a notebook computer of a worker, and then destroying a key generated by encrypting the data to be written into the first security module by the second security module through the key.
The invention has the advantages that: the safety of both the query end and the power quality monitoring center is considered, and the system is not blocked due to encryption and decryption when data is dynamically expanded in a large scale. The data monitoring node can accurately acquire the accurate time of a network signal reaching a certain node in the network, has better fault tolerance on the loss condition of received Ethernet frame signals from different signals, improves and effectively improves the real-time performance of monitoring the power quality of the distributed power supply, can ensure the data acquisition, transmission and storage in extreme weather to a certain extent, and improves the power supply reliability.
Drawings
Fig. 1 is a schematic structural diagram of a power quality monitoring device according to the present invention.
Detailed Description
The invention is further illustrated by the following specific examples:
a power quality monitoring and querying system comprises the following parts: the data monitoring node is used for detecting the electric energy quality data index of the distributed power supply in real time and transmitting the detected electric energy quality data index to the unloading node; the dump node is used for receiving, storing and uploading the electric energy quality data indexes of the distributed power supply; the power quality monitoring center is used for receiving and processing power quality data indexes of the distributed power supplies and carrying out centralized supervision and management on the power quality indexes of all the distributed power supplies in a monitoring network segment; the notebook computer is used for realizing remote inquiry and monitoring of the power quality states of all distributed power supplies in a network segment, and is characterized in that the data monitoring nodes and the unloading nodes are communicated and interacted through Ethernet cables, the unloading nodes and the power quality monitoring center are communicated and interacted through a 4G network, and the power quality monitoring center and the notebook computer are communicated and interacted through the Internet.
The query system further comprises:
the verification code generation module is used for generating a message verification code from the historical data of each distributed power supply and sending the message verification code to a notebook computer of a worker;
the authority encryption module is used for receiving the message verification code by the staff, encrypting the obtained inquiry authority and transmitting the encrypted inquiry authority back to the power quality monitoring center;
the plaintext encryption module is used for encrypting and transmitting the plaintext which accords with the inquiry authority to a notebook computer of a worker according to the inquiry authority of the worker;
a plaintext verification module for calculating the required plaintext miAnd verify miWhere i is the index number of the historical data required by the staff, miAnd the ith historical data is stored for the power quality monitoring center.
Furthermore, a storage medium is connected to the upper part and the outer part of the power quality monitoring center, a first safety module is arranged in the storage medium, and a second safety module is arranged on a hard disk in a host of the power quality monitoring center and used for accessing the first safety module; the power quality monitoring center also comprises a judging module used for judging whether the address of the message authentication code data to be written is in the first safety module, if the address of the data to be written is in the first safety module, the second safety module reads the original message authentication code data generated by the SRAM fixed address segment in the host of the power quality monitoring center and generates a key; if not, the data is directly written in, the second security module encrypts the data to be written in the first security module by using the secret key, and writes the encrypted ciphertext in the first security module.
Further, the power quality monitoring center further comprises a deleting module, wherein the deleting module is used for generating a message verification code from the historical data of each distributed power supply and sending the message verification code to a notebook computer of a worker, and then destroying a key generated by encrypting the data to be written into the first security module by the second security module through the key.
The method comprises the steps that a storage medium is accessed to a host of the power quality monitoring center, a first safety module is arranged in the storage medium, and a second safety module is arranged on a hard disk in the host of the power quality monitoring center and used for accessing the first safety module;
judging whether the address of the message authentication code data to be written is in the first security module; if the address of the data to be written is in the first safety module, the next step is carried out; if not, directly writing data;
the second safety module reads original message verification code data generated by an SRAM fixed address field in a host of the power quality monitoring center and generates a secret key;
the second security module encrypts data to be written into the first security module by using a secret key, and writes an encrypted ciphertext into the first security module.
And generating a message verification code from the historical data of each distributed power supply, sending the message verification code to a notebook computer of a worker, destroying a key generated by encrypting the data to be written into the first security module by the second security module by using the key.
The verification code generation module is specifically used for generating a message Hash value from the historical data of each distributed power supply in the power quality monitoring center, mapping each historical data into a value with a fixed length, and finally generating H1L HnAs a message authentication code;
wherein Hj←H(j,mj,qj) Generating a message authentication code H carrying plaintext informationjJ denotes the jth information, mjPlaintext representing jth message, qjAnd j is 1, 2, … and n, wherein n represents the historical data number stored by the power quality monitoring center.
The authority encryption module is specifically used for enabling a worker to have two parameters of i and qiCalculating the Hash value h without plaintext informationi；
Wherein h isi←H1(i,qi) Generating a message authentication code h without plaintext informationi: where i is the index number of the historical data required by the staff, qiThe authority required for reading the ith piece of information; staff select (t, h)i) Generating the encrypted authority value jmd using elliptic curve public key system encryptioni(ii) a Wherein, jmdi＝t·P+hiP; p is a point on the elliptic curve, the point is a base point generated by an elliptic curve public key system, and t is a random integer; jmd generated by notebook computer of staffiSent to power quality monitoringAnd (4) a heart.
The plaintext encryption module is specifically used for the power quality monitoring center to calculate the Hash value h without the plaintext message from the first data1(ii) a Electric energy quality monitoring center calculates S1＝m1+jmdi-h1P; wherein m is1The first piece of data is stored in the power quality monitoring center; h is1gP is h1Data encrypted by an elliptic curve public key system; s1And the value is an encrypted value corresponding to the 1 st data in the power quality monitoring center. By parity of reasoning, calculating the second data to the last data in sequence, and calculating S2...Sj....SnIn which S isjRepresenting the encrypted value corresponding to the jth data in the power quality monitoring center; the power quality monitoring center sends the message parameter (S)1...Sn) And sending the information to a worker.
Plaintext validation module specifically for plaintext mi＝Si-t.p; wherein SiRepresenting an encrypted value corresponding to the ith data in the power quality monitoring center, wherein t is a random integer, and P is a base point generated by an elliptic curve public key system; verification of code H with generated messageiVerification miWhether it is correct or not.
The historical data includes text and histogram of data.
The data monitoring node and the unloading node are both provided with Ethernet signal acquisition modules for acquiring Ethernet signals between the data monitoring node and the unloading node; the A/D conversion module is used for converting the Ethernet analog signal into a digital signal; the pre-storing module is used for pre-storing a local frame header sequence; the matching module is used for matching the input sequence of the digital signal with a local frame header sequence, and if the input sequence of the digital signal is completely matched with the local frame header sequence, the Ethernet frame signal is received, and a confirmation pulse is output; the trigger module is used for receiving the confirmation pulse output by the matching module and transmitting the confirmation pulse to the calibration recording module by taking the confirmation pulse as a trigger signal; and the calibration recording module is used for calibrating the local time, receiving the trigger signal, triggering the current accurate time and transmitting the time to the power quality monitoring center.
The matching module further comprises a delay time sequence generating module, which is used for respectively recording a current frame time character sequence, a previous frame time character sequence and a local frame header time character sequence when receiving the digital signal, calculating a difference value T1 between the previous frame time character sequence and the local frame header time character sequence and a difference value T2 between the current frame time character sequence and the previous frame time character sequence, if T1 is less than T2, the successfully matched delay data is T1, and so on, when receiving a new digital signal, matching the Ethernet frame signal to obtain a new successfully matched delay data, and a set of all the successfully matched delay data forms a delay time sequence which is transmitted to an electric energy quality monitoring center for analyzing the delay rule transmitted by the data packet on the network cable and for later training.
A power quality monitoring and inquiring method comprises the following steps:
001, each data monitoring node collects the power quality index of the distributed power supply monitored by each data monitoring node in real time and periodically sends the power quality index to the corresponding dump node;
002, after receiving the communication signal of successful networking of the power quality monitoring center, the dump node responds to the communication signal of the power quality monitoring center and sends the received power quality index to the power quality monitoring center;
003, the power quality monitoring center encrypts the historical data after storing the historical data, and a worker can decrypt the historical data stored in the power quality monitoring center remotely through a notebook computer and browse and look up the historical data.
The step 003 specifically includes the following steps:
031. the power quality monitoring center generates a message verification code from the historical data of each distributed power supply and sends the message verification code to a notebook computer of a worker;
032. a notebook computer of a worker receives the message verification code, encrypts the obtained inquiry authority and transmits the encrypted inquiry authority back to the power quality monitoring center;
033. the electric energy quality monitoring center encrypts and transmits plaintext conforming to the inquiry authority to a notebook computer of a worker according to the inquiry authority of the worker;
034. calculating the required plaintext miAnd verify miWhere i is the index number of the historical data required by the staff, miAnd the ith historical data is stored for the power quality monitoring center.
The step 031 is preceded by the steps of:
the method comprises the steps that a storage medium is accessed to a host of the power quality monitoring center, a first safety module is arranged in the storage medium, and a second safety module is arranged on a hard disk in the host of the power quality monitoring center and used for accessing the first safety module;
judging whether the address of the message authentication code data to be written is in the first security module; if the address of the data to be written is in the first safety module, the next step is carried out; if not, directly writing data;
the second safety module reads original message verification code data generated by an SRAM fixed address field in a host of the power quality monitoring center and generates a secret key;
the second security module encrypts data to be written into the first security module by using a secret key, and writes an encrypted ciphertext into the first security module.
In the step 031, a message verification code is generated from the historical data of each distributed power supply and sent to the notebook computer of the staff, and then a key generated by encrypting the data to be written into the first security module with the key by the second security module is destroyed.
Step 031 includes the steps of:
step 0311: generating a message Hash value from the historical data of each distributed power supply in the power quality monitoring center, mapping each historical data into a value with a fixed length, and finally generating H1L HnAs a message authentication code;
wherein Hj←H(j,mj,qj) Generating a message authentication code H carrying plaintext informationjJ denotes the jth information, mjPlaintext representing jth message, qjIndicating what is required to read the jth messageAnd j is 1, 2, … and n, wherein n represents the number of historical data stored in the power quality monitoring center.
Step 032 comprises the following steps:
step 0321: the notebook computer of the working personnel has two parameters of i and qiCalculating the Hash value h without plaintext informationi；
Wherein h isi←H1(i,qi) Generating a message authentication code h without plaintext informationi: where i is the index number of the historical data required by the staff, qiThe authority required for reading the ith piece of information;
step 0322: staff select (t, h)i) Generating the encrypted authority value jmd using elliptic curve public key system encryptioni；
Wherein, jmdi＝t·P+hiP; p is a point on the elliptic curve, the point is a base point generated by an elliptic curve public key system, and t is a random integer;
step 0323: jmd generated by notebook computer of staffiAnd sending the data to a power quality monitoring center.
Step 033 comprises the following steps:
step 0331: the power quality monitoring center calculates the Hash value h without plaintext message from the first data1；
Step 0332: electric energy quality monitoring center calculates S1＝m1+jmdi-h1P; wherein m is1The first piece of data is stored in the power quality monitoring center; h is1gP is h1Data encrypted by an elliptic curve public key system; s1And the value is an encrypted value corresponding to the 1 st data in the power quality monitoring center.
Step 0333: by parity of reasoning, calculating the second data to the last data in sequence, and calculating S2...Sj....SnIn which S isjRepresenting the encrypted value corresponding to the jth data in the power quality monitoring center;
step 0334: the power quality monitoring center sends the message parameter (S)1...Sn) And sending the information to a worker.
Plaintext m in step 034i＝Si-t.p; wherein SiRepresenting an encrypted value corresponding to the ith data in the power quality monitoring center, wherein t is a random integer, and P is a base point generated by an elliptic curve public key system; verification of code H with generated messageiVerification miWhether it is correct or not.
The historical data includes text and histogram of data.
The step 002 of periodically sending the power quality index to the corresponding dump node further includes the following steps: respectively collecting Ethernet signals of a data monitoring node and a dump node; converting the Ethernet analog signal into a digital signal; pre-storing a local frame header sequence; matching the input sequence of the digital signal with a local frame header sequence, if the input sequence of the digital signal is completely matched with the local frame header sequence, indicating that an Ethernet frame signal is received, and outputting a confirmation pulse; receiving the output confirmation pulse, and taking the confirmation pulse as a trigger signal; calibrating local time, triggering current accurate time and transmitting the time to a power quality monitoring center; and the power quality monitoring center compares the arrival time of the Ethernet frame signals of the data monitoring node and the transfer node to obtain the transmission time delay of the network signals between the data monitoring node and the transfer node.
The matching of the input sequence of the digital signal and the local frame header sequence further comprises: when a digital signal is received, a current frame time character sequence, a previous frame time character sequence and a local frame header time character sequence are respectively recorded, a difference value T1 between the previous frame time character sequence and the local frame header time character sequence and a difference value T2 between the current frame time character sequence and the previous frame time character sequence are calculated, if T1 is less than T2, successfully matched delay data is T1, and so on, when the new digital signal is received, the Ethernet frame signal is matched to obtain new successfully matched delay data, a delay time sequence is formed by a set of all successfully matched delay data, and the delay time sequence is transmitted to an electric energy quality monitoring center for analyzing the delay rule of data packet transmission on a network line and later training and learning.
Claims (1)
1. A power quality monitoring and querying system comprises the following parts: the data monitoring node is used for detecting the electric energy quality data index of the distributed power supply in real time and transmitting the detected electric energy quality data index to the unloading node; the dump node is used for receiving, storing and uploading the electric energy quality data indexes of the distributed power supply; the power quality monitoring center is used for receiving and processing power quality data indexes of the distributed power supplies and carrying out centralized supervision and management on the power quality indexes of all the distributed power supplies in a monitoring network segment; the system comprises a notebook computer, a data monitoring node and a dump node, wherein the notebook computer is used for realizing remote inquiry and monitoring of the power quality states of all distributed power supplies in a network segment, and is characterized in that the data monitoring node and the dump node are communicated and interacted through an Ethernet network, the dump node and a power quality monitoring center are communicated and interacted through a 4G network, and the power quality monitoring center and the notebook computer are communicated and interacted through the Internet; the query system further comprises: the verification code generation module is used for generating a message verification code from the historical data of each distributed power supply and sending the message verification code to a notebook computer of a worker;
the authority encryption module is used for receiving the message verification code by the staff, encrypting the obtained inquiry authority and transmitting the encrypted inquiry authority back to the power quality monitoring center;
the plaintext encryption module is used for encrypting and transmitting the plaintext which accords with the inquiry authority to a notebook computer of a worker according to the inquiry authority of the worker;
the plaintext verification module is used for calculating and verifying required plaintext, wherein i is an index number of historical data required by a worker and is the ith historical data stored by the power quality monitoring center;
a storage medium is connected to the upper part and the outer part of the power quality monitoring center, a first safety module is arranged in the storage medium, and a second safety module is arranged on a hard disk in a host of the power quality monitoring center and used for accessing the first safety module; the power quality monitoring center also comprises a judging module used for judging whether the address of the message authentication code data to be written is in the first safety module, if the address of the data to be written is in the first safety module, the second safety module reads the original message authentication code data generated by the SRAM fixed address segment in the host of the power quality monitoring center and generates a key; if not, directly writing data, encrypting the data to be written into the first security module by the second security module by using a secret key, and writing the encrypted ciphertext into the first security module;
the electric energy quality monitoring center also comprises a deleting module, a key generating module and a data processing module, wherein the deleting module is used for generating a message verification code from the historical data of each distributed power supply and sending the message verification code to a notebook computer of a worker, and then destroying the key generated by encrypting the data to be written into the first security module by the second security module through the key;
the verification code generation module is specifically used for generating a message Hash value from the historical data of each distributed power supply in the power quality monitoring center, mapping each historical data into a value with a fixed length, and finally generating the message Hash value to serve as a message verification code;
generating a message authentication code carrying plaintext information, wherein j represents the jth message, represents the plaintext of the jth message, and represents the authority required for reading the jth message, and j is 1, 2, … and n, wherein n represents the number of historical data stored in the power quality monitoring center;
the authority encryption module is specifically used for enabling a worker to have two parameters of i and qiCalculating the Hash value h without plaintext informationi；
Wherein h isi←H1(i,qi) Generating a message authentication code h without plaintext informationi: where i is the index number of the historical data required by the staff, qiThe authority required for reading the ith piece of information; staff select (t, h)i) Generating the encrypted authority value jmd using elliptic curve public key system encryptioni(ii) a Wherein, jmdi＝t·P+hiP; p is a point on the elliptic curve, the point is a base point generated by an elliptic curve public key system, and t is a random integer; jmd generated by notebook computer of staffiSending the data to a power quality monitoring center;
plaintext encryption module specifically forThe power quality monitoring center calculates the Hash value h without plaintext message from the first data1(ii) a Electric energy quality monitoring center calculates S1＝m1+jmdi-h1P; wherein m is1The first piece of data is stored in the power quality monitoring center; h is1P is h1Data encrypted by an elliptic curve public key system; s1Representing the encrypted value corresponding to the 1 st data in the power quality monitoring center; by parity of reasoning, calculating the second data to the last data in sequence, and calculating S2...Sj....SnIn which S isjRepresenting the encrypted value corresponding to the jth data in the power quality monitoring center; the power quality monitoring center sends the message parameter (S)1...Sn) Sending the data to a worker;
plaintext validation module specifically for plaintext mi＝Si-t.p; wherein SiRepresenting an encrypted value corresponding to the ith data in the power quality monitoring center, wherein t is a random integer, and P is a base point generated by an elliptic curve public key system; verification of code H with generated messageiVerification miWhether the correction is correct or not;
the data monitoring node and the unloading node are both provided with Ethernet signal acquisition modules for acquiring Ethernet signals between the data monitoring node and the unloading node; the A/D conversion module is used for converting the Ethernet signal into a digital signal; the pre-storing module is used for pre-storing a local frame header sequence; the matching module is used for matching the input sequence of the digital signal with a local frame header sequence, and if the input sequence of the digital signal is completely matched with the local frame header sequence, the Ethernet frame signal is received, and a confirmation pulse is output; the trigger module is used for receiving the confirmation pulse output by the matching module and transmitting the confirmation pulse to the calibration recording module by taking the confirmation pulse as a trigger signal; the calibration recording module is used for calibrating local time, receiving a trigger signal, triggering current accurate time and transmitting the time to the power quality monitoring center;
the matching module further comprises a delay time sequence generating module, which is used for respectively recording a current frame time character sequence, a previous frame time character sequence and a local frame header time character sequence when receiving the digital signal, calculating a difference value T1 between the previous frame time character sequence and the local frame header time character sequence and a difference value T2 between the current frame time character sequence and the previous frame time character sequence, if T1 is less than T2, the successfully matched delay data is T1, and so on, when receiving a new digital signal, matching the Ethernet frame signal to obtain a new successfully matched delay data, and a set of all the successfully matched delay data forms a delay time sequence which is transmitted to an electric energy quality monitoring center for analyzing the delay rule transmitted by the data packet on the network cable and for later training.
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107871385A (en) * | 2016-09-23 | 2018-04-03 | 湖南绿碳建筑科技有限公司 | A kind of Energy Consumption of Construction monitoring system being wirelessly transferred based on 433MHz |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882256A (en) * | 2009-05-08 | 2010-11-10 | 深圳市中电电力技术有限公司 | Electric energy quality monitoring method, device and system |
| US11178124B2 (en) * | 2014-09-02 | 2021-11-16 | Apple Inc. | Secure pairing of a processor and a secure element of an electronic device |
| US20170041766A1 (en) * | 2015-08-05 | 2017-02-09 | Qualcomm Incorporated | Media access control segmentation and packet data convergence protocol delivery notification with enhanced component carriers |
| CN105301416B (en) * | 2015-11-30 | 2018-02-09 | 浙江万胜智能科技股份有限公司 | Equipment for monitoring power quality and its monitoring method |
| CN105978686A (en) * | 2016-05-10 | 2016-09-28 | 杭州海兴电力科技股份有限公司 | Key management method and system |
-
2018
- 2018-06-26 CN CN201810668083.XA patent/CN108924116B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107871385A (en) * | 2016-09-23 | 2018-04-03 | 湖南绿碳建筑科技有限公司 | A kind of Energy Consumption of Construction monitoring system being wirelessly transferred based on 433MHz |
Non-Patent Citations (1)
| Title |
|---|
| "用电信息采集系统双向互动功能设计及关键技术";祝恩国、窦健;《电力系统自动化》;20150910;第39卷(第17期);第62-67页 * |
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