CN112327034B - Voltage stability monitoring method - Google Patents
Voltage stability monitoring method Download PDFInfo
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- CN112327034B CN112327034B CN202011046040.1A CN202011046040A CN112327034B CN 112327034 B CN112327034 B CN 112327034B CN 202011046040 A CN202011046040 A CN 202011046040A CN 112327034 B CN112327034 B CN 112327034B
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Abstract
The invention provides a voltage stability monitoring method, which comprises the following steps: collecting the voltage of each circuit to be monitored at regular time; judging whether the acquired voltages meet the corresponding voltage threshold ranges in real time; respectively carrying out voltage instability alarm on each voltage which is judged not to meet the corresponding voltage threshold range, and storing the circuit identification number of the corresponding circuit to be monitored and the corresponding circuit identification number of the circuit to be monitored to a first database; for each voltage which is judged to meet the corresponding voltage threshold range, respectively storing the voltage and the circuit identification number of the corresponding circuit to be monitored to a second database; and uploading the data stored in the first database and the second database to a remote monitoring platform periodically, and emptying the first database and the second database after uploading the data stored in the first database and the second database to the remote monitoring platform each time. The method is used for monitoring the voltage stability of the distribution line in the distribution box.
Description
Technical Field
The invention relates to the field of power systems, in particular to a voltage stability monitoring method.
Background
The distribution box is a total circuit distribution box for all users, and is internally provided with a plurality of distribution lines.
With the change of the load on each distribution line, the voltage may be unstable, and even the load on the distribution line may be overloaded and burned out or the load voltage is too low to operate normally.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, the present invention provides a voltage stability monitoring method for monitoring the voltage stability of a distribution line in a distribution box.
The invention provides a voltage stability monitoring method, which comprises the following steps:
collecting the voltage of each circuit to be monitored at regular time; each circuit to be monitored is provided with a circuit identification number;
judging whether the acquired voltages meet the corresponding voltage threshold ranges in real time;
respectively carrying out voltage instability alarm on each voltage which is judged not to meet the corresponding voltage threshold range, and storing the voltage instability alarm and the circuit identification number of the corresponding circuit to be monitored to a first database;
for each voltage which is judged to meet the corresponding voltage threshold range, respectively storing the voltage and the circuit identification number of the circuit to be monitored corresponding to the voltage to a second database;
and periodically uploading the data stored in the first database and the second database to a remote monitoring platform, and emptying the first database and the second database after uploading the data stored in the first database and the second database to the remote monitoring platform each time.
Furthermore, the method for uploading the data stored in the first database and the second database to the remote monitoring platform each time comprises the following steps:
reading all voltage data stored in a first database and a second database according to a preset first reading rule to obtain a first group of data;
reading all circuit identification numbers stored in the first database and the second database according to a preset second reading rule to obtain a second group of data;
randomly generating database random numbers S1 and S2;
splicing the S1 and the S2, the first group of data and the second group of data according to a preset first splicing rule to obtain first splicing data F1;
splicing the S1 and the S2, the first group of data and the second group of data according to a preset second splicing rule to obtain second splicing data F2;
calculating the digital abstract of the first splicing data F1 by adopting an MD5 algorithm to obtain a digital abstract M;
encrypting the second splicing data F2 by adopting a preset encryption algorithm to obtain a first ciphertext D;
splicing the digital abstract M and the first ciphertext D according to a preset third splicing rule to obtain third splicing data F3;
and uploading the third splicing data F3 to a remote monitoring platform.
Further, the remote monitoring platform receives the transmitted third splicing data F3 in real time, and analyzes each received third splicing data F3, and the analyzing process is as follows:
splitting the received third splicing data F3 according to the third splicing rule to obtain a digital abstract M and a first ciphertext D;
decrypting the first ciphertext D obtained by splitting to obtain second splicing data F2;
according to the second splicing rule, splitting the decrypted second splicing data F2 to obtain a random number S1, a random number S2, a first group of data and a second group of data;
splicing the split random number S1, the split random number S2, the first group of data and the second group of data according to the first splicing rule to obtain re-spliced data F1';
calculating the digital abstract of the re-splicing data F1 'by adopting an MD5 algorithm to obtain a new digital abstract M';
comparing whether the digital abstract M obtained by splitting is consistent with the new digital abstract M':
if so, analyzing and processing the first group of data and the second group of data obtained by splitting according to the first reading rule and the second reading rule to obtain the circuit identification number of each circuit to be monitored and the corresponding voltage of the circuit identification number, and displaying and storing the obtained circuit identification number of each circuit to be monitored and the corresponding voltage of the circuit identification number;
if not, alarming the received data.
Further, the voltage of the circuit to be monitored is collected through a voltage transformer.
Further, the voltage instability alarm is performed by sending voltage instability alarm information to a preset mobile phone number.
Further, a random number generator is used to randomly generate the random numbers S1 and S2.
Further, the encryption algorithm adopts a symmetric encryption algorithm.
Further, the number of the circuits to be monitored is at least two.
The beneficial effect of the invention is that,
(1) The voltage stability monitoring method provided by the invention collects the voltage of each circuit to be monitored at regular time, judges whether the collected voltage meets the corresponding voltage threshold range in real time, and carries out voltage instability alarm on each voltage which is judged not to meet the corresponding voltage threshold range, so that the voltage instability phenomenon on each related distribution line in the distribution box can be found out in time, and related power workers can perform corresponding distribution processing on the distribution line with unstable voltage in time.
(2) According to the voltage stability monitoring method provided by the invention, the data stored in the first database and the second database are uploaded to the remote monitoring platform regularly, so that the voltage stability of the distribution lines in the distribution box can be monitored in time.
(3) According to the voltage stability monitoring method provided by the invention, the transmission of the data stored in the first database and the second database to the remote monitoring platform is completed based on the first reading rule, the second reading rule, the random numbers S1 and S2, the first splicing rule, the second splicing rule, the MD5 algorithm, the encryption algorithm and the third splicing rule, so that the safety and the integrity of data transmission are ensured to a certain extent.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic flow diagram of a method of one embodiment of the invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
FIG. 1 is a schematic flow diagram of a method of one embodiment of the invention. When the method is used, the method can be used for monitoring the voltage stability of all or part of distribution lines in a single distribution box, and can also be used for monitoring the voltage stability of the distribution lines in a plurality of distribution boxes.
As shown in fig. 1, the voltage stability monitoring method includes:
step 101, collecting the voltage of each circuit to be monitored at regular time.
Specifically, each circuit to be monitored is provided with a circuit identification number. The circuit identification number is used for uniquely identifying the circuit to be monitored.
The voltage of each circuit to be monitored can be collected once every 30 minutes.
The circuit to be monitored is a distribution line to be monitored in the distribution box for voltage stability.
In this embodiment, the main executing body of step 101 is a set of voltage transformers, and in implementation, one voltage transformer is installed on each circuit to be monitored for voltage acquisition.
It should be noted that the main body of the step 101 may also be any device or component that can be used to collect the voltage on the circuit to be monitored in the prior art, such as an associated voltage collecting chip.
And 102, judging whether the acquired voltages meet the corresponding voltage threshold ranges in real time.
Specifically, taking the circuit a to be monitored and the circuit B to be monitored as an example, assuming that the voltage threshold ranges corresponding to the circuit a to be monitored and the circuit B to be monitored are both the voltage threshold range C (which may not be all the voltage threshold ranges C), and the voltages of the circuit a to be monitored and the circuit B to be monitored, which are currently collected in step 101, are V1 and V2 respectively, then: and judging whether the voltage V1 of the circuit A to be monitored is in the voltage threshold range C or not, and judging whether the voltage V1 of the circuit B to be monitored is in the voltage threshold range C or not.
The voltage threshold ranges corresponding to the circuits to be monitored may or may not be all the same.
And 103, respectively carrying out voltage instability alarm on each voltage judged not to meet the corresponding voltage threshold range, and storing the voltage instability alarm and the circuit identification number of the corresponding circuit to be monitored to the first database.
For example, if the circuit identifier number of the circuit a to be monitored is 001 and the voltage V1 of the circuit a to be monitored is determined not to be within the voltage threshold range C, the voltage instability alarm is performed on the circuit a to be monitored, and the voltage V1 of the circuit a to be monitored and the number 001 thereof are stored in the first database.
And step 104, respectively storing the circuit identification numbers of each voltage which is judged to meet the corresponding voltage threshold range and the corresponding circuit to be monitored to a second database.
For example, if the circuit id of the circuit B to be monitored is numbered 002 and the voltage V2 of the circuit B to be monitored is determined to be within the voltage threshold range C, the voltage V2 of the circuit B to be monitored and the number 002 thereof are stored in the second database.
And 105, periodically uploading the data stored in the first database and the second database to a remote monitoring platform, and emptying the first database and the second database after uploading the data stored in the first database and the second database to the remote monitoring platform each time.
Specifically, the data stored in the first database and the second database can be uploaded to the remote monitoring platform every 24 hours. The remote monitoring platform may be a PC of a monitoring center of an electric power company.
Optionally, as an embodiment of the present invention, in step 105, the data stored in the first database and the second database is uploaded to the remote monitoring platform each time, and a specific implementation method is:
reading all voltage data stored in a first database and a second database according to a preset first reading rule to obtain a first group of data;
reading all circuit identification numbers stored in the first database and the second database according to a preset second reading rule to obtain a second group of data;
randomly generating two random numbers S1 and S2;
splicing the S1 and the S2, the first group of data and the second group of data according to a preset first splicing rule to obtain first splicing data F1;
splicing the S1 and the S2, the first group of data and the second group of data according to a preset second splicing rule to obtain second splicing data F2;
calculating the digital abstract of the first splicing data F1 by adopting an MD5 algorithm to obtain a digital abstract M;
encrypting the second splicing data F2 by adopting a preset encryption algorithm to obtain a first ciphertext D;
splicing the digital abstract M and the first ciphertext D according to a preset third splicing rule to obtain third splicing data F3;
and uploading the third splicing data F3 to a remote monitoring platform.
Specifically, according to a preset first reading rule, all the voltage data stored in the first database and all the voltage data stored in the second database may be read, where one voltage data stored in the first database is read first, then one voltage data stored in the second database is read, then another voltage data stored in the first database is read, then another voltage data stored in the second database is read, and so on until all the voltage data stored in the first database and all the voltage data stored in the second database are read, so as to obtain the first group of data.
The reading of all the circuit identifier numbers stored in the first database and the second database according to the preset second reading rule may be that one circuit identifier number stored in the first database is read first, then one circuit identifier number stored in the second database is read, then another circuit identifier number stored in the first database is read, then another circuit identifier number stored in the second database is read, and so on until all the circuit identifier numbers stored in the first database and the second database are read, and the second group of data is obtained.
The splicing of the S1, S2, the first group of data and the second group of data according to the preset first splicing rule may be performed by sequentially splicing the S1, S2, the first group of data and the second group of data (or splicing may be performed according to other preset splicing orders), so as to obtain the first spliced data F1.
The second stitching rule may be the same as or different from the first stitching rule, for example, the second stitching rule may be that S1, S2, the first group of data, and the second group of data are sequentially stitched according to the order of S2, the first group of data, the second group of data, and S1.
The digital digest M and the first ciphertext D may be spliced in sequence, or spliced in the distribution sequence of the first ciphertext D and the digital digest M.
Optionally, as an embodiment of the present invention, the remote monitoring platform receives the transmitted third splicing data F3 in real time, and analyzes each received third splicing data F3, where an analysis process is as follows:
splitting the received third splicing data F3 according to the third splicing rule to obtain a digital abstract M and a first ciphertext D;
decrypting the first ciphertext D obtained by splitting to obtain second splicing data F2;
according to the second splicing rule, splitting the decrypted second splicing data F2 to obtain a random number S1, a random number S2, a first group of data and a second group of data;
splicing the random number S1, the random number S2, the first group of data and the second group of data obtained by splitting according to the first splicing rule to obtain re-splicing data F1';
calculating the digital abstract of the re-splicing data F1 'by adopting an MD5 algorithm to obtain a new digital abstract M';
comparing whether the digital abstract M obtained by splitting is consistent with the new digital abstract M':
if so, analyzing and processing the first group of data and the second group of data obtained by splitting according to the first reading rule and the second reading rule to obtain the circuit identification numbers of the circuits to be monitored and the voltages corresponding to the circuit identification numbers, and displaying and storing the obtained circuit identification numbers of the circuits to be monitored and the voltages corresponding to the circuit identification numbers; if not, alarming the received data.
The main body of the execution of the above steps 102 to 105 may be a system or a terminal device, and the system and the terminal device are configured to be able to execute the above steps 102 to 105.
Optionally, as an embodiment of the present invention, the performing voltage instability alarm in step 103 is sending voltage instability alarm information to a preset mobile phone number. The preset mobile phone number can be the mobile phone number of the related staff of the power company, and the related staff can receive the sent voltage instability alarm information in time through the mobile phone of the related staff, so that the corresponding processing can be conveniently and timely carried out.
Optionally, as an embodiment of the present invention, a random number generator is used to randomly generate the random numbers S1 and S2. The random number generator in the present embodiment can randomly generate 0
99.
Optionally, as an embodiment of the present invention, the encryption algorithm is a symmetric encryption algorithm. In this embodiment, an AES algorithm is used.
Optionally, as an embodiment of the present invention, in step 101, the number of the circuits to be monitored is at least two. The number of circuits to be monitored can be set by a person skilled in the art depending on the actual situation.
It should be noted that the various reading rules and the splicing rules referred to in this specification can also be implemented by selecting other commonly used related rules according to actual situations.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions should be within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure and the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A voltage stability monitoring method is characterized by comprising the following steps:
collecting the voltage of each circuit to be monitored at regular time; each circuit to be monitored is provided with a circuit identification number;
judging whether the acquired voltages meet the corresponding voltage threshold ranges in real time;
respectively carrying out voltage instability alarm on each voltage which is judged not to meet the corresponding voltage threshold range, and storing the circuit identification number of the corresponding circuit to be monitored and the corresponding circuit identification number of the circuit to be monitored to a first database;
for each voltage which is judged to meet the corresponding voltage threshold range, respectively storing the voltage and the circuit identification number of the corresponding circuit to be monitored to a second database;
the method comprises the steps that data stored in a first database and data stored in a second database are uploaded to a remote monitoring platform regularly, and the first database and the second database are emptied after the data stored in the first database and the data stored in the second database are uploaded to the remote monitoring platform each time;
the method for uploading the data stored in the first database and the second database to the remote monitoring platform each time comprises the following steps:
reading all voltage data stored in the first database and the second database according to a preset first reading rule to obtain a first group of data;
reading all circuit identification numbers stored in the first database and the second database according to a preset second reading rule to obtain a second group of data;
randomly generating two random numbers S1 and S2;
splicing the S1 and the S2, the first group of data and the second group of data according to a preset first splicing rule to obtain first splicing data F1;
splicing the S1 and the S2, the first group of data and the second group of data according to a preset second splicing rule to obtain second splicing data F2;
calculating the digital abstract of the first splicing data F1 by adopting an MD5 algorithm to obtain a digital abstract M;
encrypting the second splicing data F2 by adopting a preset encryption algorithm to obtain a first ciphertext D;
splicing the digital abstract M and the first ciphertext D according to a preset third splicing rule to obtain third splicing data F3;
and uploading the third splicing data F3 to a remote monitoring platform.
2. The voltage stability monitoring method according to claim 1, wherein the remote monitoring platform receives the transmitted third splicing data F3 in real time, and analyzes each received third splicing data F3, and the analyzing process includes:
splitting the received third splicing data F3 according to the third splicing rule to obtain a digital abstract M and a first ciphertext D;
decrypting the first ciphertext D obtained through splitting to obtain second splicing data F2;
according to the second splicing rule, splitting the decrypted second splicing data F2 to obtain a random number S1, a random number S2, a first group of data and a second group of data;
splicing the random number S1, the random number S2, the first group of data and the second group of data obtained by splitting according to the first splicing rule to obtain re-splicing data F1';
calculating the digital abstract of the re-splicing data F1 'by adopting an MD5 algorithm to obtain a new digital abstract M';
comparing whether the digital abstract M obtained by splitting is consistent with the new digital abstract M':
if so, analyzing and processing the first group of data and the second group of data obtained by splitting according to the first reading rule and the second reading rule to obtain the circuit identification numbers of the circuits to be monitored and the voltages corresponding to the circuit identification numbers, and displaying and storing the obtained circuit identification numbers of the circuits to be monitored and the voltages corresponding to the circuit identification numbers;
if not, alarming is carried out on the received data.
3. The voltage stability monitoring method according to claim 1 or 2, characterized in that the voltage of the circuit to be monitored is collected by a voltage transformer.
4. The voltage stability monitoring method according to claim 1 or 2, wherein the performing of the voltage instability alarm is sending a voltage instability alarm message to a preset mobile phone number.
5. The voltage stability monitoring method according to claim 1 or 2, wherein the random numbers S1 and S2 are randomly generated using a random number generator.
6. The voltage stability monitoring method according to claim 1 or 2, wherein the encryption algorithm employs a symmetric encryption algorithm.
7. The voltage stability monitoring method according to claim 1, wherein there are at least two of the circuits to be monitored.
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