CN114372595A - Automatic power grid dispatching control operation state inspection system and method - Google Patents

Automatic power grid dispatching control operation state inspection system and method Download PDF

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Publication number
CN114372595A
CN114372595A CN202111562484.5A CN202111562484A CN114372595A CN 114372595 A CN114372595 A CN 114372595A CN 202111562484 A CN202111562484 A CN 202111562484A CN 114372595 A CN114372595 A CN 114372595A
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data
point
power grid
service
layer
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CN114372595B (en
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吕洋
徐春雷
孙世明
赵奇
张琦兵
潘琪
马明明
丁宏恩
俞瑜
唐聪
孟雨庭
王永
王若晨
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State Grid Jiangsu Electric Power Co Ltd
NR Engineering Co Ltd
Suzhou Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
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State Grid Jiangsu Electric Power Co Ltd
NR Engineering Co Ltd
Nari Technology Co Ltd
Suzhou Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
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    • G—PHYSICS
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    • H—ELECTRICITY
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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Abstract

A power grid dispatching control operation state automatic inspection method and system comprises a control layer, a service layer, an object layer and a base layer; the control layer comprises a vertical encryption user management and authentication system, a vertical encryption equipment communication and rule system, a vertical data analysis system and a vertical data acquisition system; the service layer provides method service for the system of the control layer; the service layer provides identity authentication and user management service for the vertical encryption user management and authentication system; the object layer provides a medium for storing the result stored by the service layer; the base layer provides upper layer data application functions. The invention changes the traditional manual inspection work, takes informatization as a basis to realize an automatic inspection mode, and improves the whole technical content and precision inspection work of the power grid; the vertical encryption method effectively encrypts a large amount of stored information, and improves the confidentiality of the power grid during dispatching control operation.

Description

Automatic power grid dispatching control operation state inspection system and method
Technical Field
The invention belongs to the field of power system dispatching control, and particularly relates to a power grid dispatching control running state automatic inspection system and a power grid dispatching control running state automatic inspection method.
Background
With the rapid development of science and technology and social economy, electric power has become essential fundamental social development. As social dependence demands for electric power are increasing, the capacity of electric power is also increasing accordingly. Generally, the power system assumes the responsibility of vital power production, transmission and distribution throughout society. In order to realize a safe and stable power supply and high-quality service, and simultaneously avoid occurrence of major safety accidents, higher requirements and power safety production standards are put forward for a power system. If potential safety hazards exist in the production and transmission of the power system, the normal operation of the whole society can be seriously damaged. During operation, the power system firstly needs to provide safe and high-quality power supply for terminal users stably, promote society to develop economy quickly and realize economic benefits. In the current environment, the scale and complexity of the development of the power system are higher and higher, the number of basic hardware and the number of infrastructure are increased sharply, and in addition, the requirement of a safe power grid is higher and higher, so that an effective and efficient automatic power grid dispatching patrol system is urgently needed.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a power grid dispatching control operation state automatic inspection system and a power grid dispatching control operation state automatic inspection method.
The invention adopts the following technical scheme:
a power grid dispatching control running state automatic inspection system comprises a control layer, a service layer, an object layer and a base layer; the control layer comprises a vertical encryption user management and authentication system, a vertical encryption equipment communication and rule system, a vertical data analysis system and a vertical data acquisition system;
the service layer provides method service for the system of the control layer; the service layer provides identity authentication and user management services for the vertical encryption user management and authentication system, provides rule management services and command method services for the vertical encryption equipment communication and rule system, provides data analysis method services for the vertical data analysis system and provides data collection method services for the vertical data collection system;
the object layer provides a medium for storing the result stored by the service layer, and comprises a user database, a vertical encryption rule and a data acquisition and analysis database, wherein the data acquired and calculated by the service layer is stored in the user database;
the base layer provides upper layer data application functions including user verification, user management, IP detection, automatic abnormal point inspection, report viewing, data comparison and test analysis.
In a service layer, the identity authentication service uses an OAuth authentication method;
the user management service divides the users into a power grid dispatcher and a system administrator;
the rule management service and the command management service are respectively used for formulating management rules of the power equipment and executing commands used in different tasks;
the data collection method comprises the steps that real-time parameters of the operation of the power system are collected through Remote Terminal (RTU) equipment;
the data analysis method service performs comparative analysis on the data acquired by the data collection method service, and performs vertical encryption on the data obtained by calculation.
The real-time parameters of the operation of the power system comprise parameters of the output of the generator, the voltage of a bus, the power flow in the system, the existence of load and reactive load, the line current and the electroplating amount.
The vertical encryption method comprises the following steps:
firstly, randomly selecting an elliptic curve ECP, randomly selecting a point on the elliptic curve ECP as a base point A, and enabling the order n of the base point A to be a prime number more than 10000; then randomly selecting an integer m as a private key s, calculating a public key K which is mA, and disclosing three constant terms of an elliptic curve ECP, a base point A and the public key K;
when a message is received, the content of the message is converted into a point M on an elliptic curve ECP, a random number r is selected and a ciphertext mw is calculated,
the calculation method comprises the following steps:
mw＝{rA，M+rR}
wherein, R is any point on the elliptic curve ECP, and R can not be 0.
In the vertical encryption method, the method for decrypting the ciphertext mw is as follows:
mw+rR-M+rsA
the method for converting the message content into a point M on the elliptic curve ECP comprises the following steps:
assuming that the prime field of the selected elliptic curve ECC is k bits, and the length of the message content to be converted is k-1-g, the following calculation is performed:
s1: calculate x ═ m | | |0g(ii) a m represents an ascii code corresponding to each character of the information content to be converted;
s2: calculating x' ═ x from the calculation result of S13+ ax + b mod q; wherein, (a, b) is a random point on the ECC, and the corresponding odd prime number in the prime field is q;
s3: if x' is the second residue of x, calculate
Figure BDA0003420971620000031
Then the corresponding pointM is (x, y); otherwise, the g-th bit of x is added with 1 and then the steps S2 and S3 are repeated until the corresponding point is found.
The method for automatically checking the abnormal point comprises the following steps:
for each kind of data, firstly calculating the Euclidean distance between every two data points in the kind of data, finding the longest Euclidean distance and defining a truncation distance dcDefined truncation distance dcAt most one third of the longest euclidean distance;
for any data point i, its relative density p is calculatedi：
Figure BDA0003420971620000032
Wherein d isijRepresenting the Euclidean distance between an arbitrary data point i and an arbitrary data point j of the same type, K represents a symbolic function, when (d)ij-dc) When < 0, λ (d)ij-dc) Is 1, otherwise is 0;
relative density p of each data point of the classiAfter sorting, calculating the minimum Euclidean distance from each data point to the data point, wherein the minimum Euclidean distance is greater than the relative density data point of each data point:
Figure BDA0003420971620000033
where jj represents any one data point having a relative density greater than the relative density of data point i, pjjRepresenting the relative density, d, of data points jji，jjRepresenting the euclidean distance of data point i to data point jj.
In the method of automatically checking for an abnormal point,
if the Euclidean distance between a data point and other data points which are larger than the first threshold value is larger than the truncation distance, and the relative density ranking of the data point is smaller than the second threshold value and larger than the minimum Euclidean distance of all the data points which are smaller than the relative density of the data point, the data point is an abnormal point.
The detection analysis and data comparison of the base layer completes the command issued by the service of the service layer data analysis method, and the comparison and preset analysis including the calculation of the median and the standard deviation are carried out on the provided data.
The invention also discloses a power grid dispatching control operation state automatic inspection method based on the power grid dispatching control operation state automatic inspection system, which comprises the following steps:
step 1, authenticating the identity of a user, if the user is a power grid dispatcher, entering step 2, if the user is a system administrator, otherwise, ending the method;
step 2, collecting real-time parameters of the operation of the power system;
real-time parameters are acquired through Remote Terminal Unit (RTU) equipment, and the parameters comprise output of a generator, bus voltage, tide in a system, load and reactive load, line current and electroplating amount;
step 3, comparing the collected real-time operation parameters of the power system;
step 4, vertically encrypting the analysis result and the acquired data and then storing the analysis result and the acquired data;
step 5, when fault detection is needed, extracting and decrypting the stored data, and then detecting abnormal points;
and 6, feeding the abnormal points back to a user to complete the inspection of the dispatching control operation state of the power grid.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention mainly designs a power grid dispatching automatic inspection overall topological diagram, and the system has a four-layer structure of a control layer, a service layer, an object layer and a base layer, changes the traditional manual inspection work, takes informatization as a base automatic inspection mode, and improves the whole technical content and precision inspection work of the power grid;
2. the vertical encryption method can effectively encrypt a large amount of stored information, and greatly improves the confidentiality of the power grid during dispatching control operation.
Drawings
FIG. 1 is a diagram of a power grid dispatching patrol system;
fig. 2 is a general topological diagram of automatic patrol of power grid dispatching.
Detailed Description
The present application is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present application is not limited thereby.
The invention discloses an automatic patrol system for dispatching and controlling running states of a power grid, which comprises a control layer, a service layer, an object layer and a base layer, wherein the control layer is used for controlling the running states of the power grid; a specific power grid dispatching automatic patrol overall topological diagram is shown in fig. 2.
The control layer comprises a vertical encryption user management and authentication system, a vertical encryption equipment communication and rule system, a vertical data analysis system and a vertical data acquisition system; the user can control these systems through the control layer; specifically, a power grid dispatcher can control a vertical encryption equipment communication and rule system, a vertical data analysis system and a vertical data acquisition system, and a system administrator can control a vertical encryption user management and authentication system;
the vertical encryption user management and authentication system provides a user input information interface;
the vertical encryption equipment communication and rule system provides a user communication rule setting interface;
the vertical data analysis system provides a user data comparison interface;
the vertical data acquisition system provides a user data acquisition interface;
the control layer provides an equipment security baseline management function and a network active detection function for a user and rejects unsafe login requests and viruses;
the service layer provides method service for the system of the control layer; specifically, the service layer provides identity authentication and user management services for a vertical encryption user management and authentication system, provides rule management services and command method services for a vertical encryption device communication and rule system, provides data analysis method services for a vertical data analysis system, and also provides data collection method services for a vertical data collection system;
the object layer provides a medium for storing the result stored by the service layer; specifically, the object layer comprises a user database, a vertical encryption rule and a data acquisition and analysis database; the system comprises a user database, a vertical encryption rule and data acquisition and analysis database, a service layer identity authentication server and a user management service server, wherein the user database is used for storing data obtained by service layer identity authentication and user management service calculation;
the base layer provides upper layer data application functions; specifically, functions which can be realized after the base layer reads data in the object layer database comprise user verification, user management, IP detection, abnormal point automatic check, report check, data comparison and test analysis.
In this embodiment, the identity authentication service of the service layer uses an OAuth authentication method;
the user management service divides the users into a power grid dispatcher and a system administrator;
the rule management service and the command management service are respectively used for formulating management rules of the power equipment and executing commands used in different tasks;
the data collection method comprises the steps that real-time parameters of the operation of the power system are collected through Remote Terminal Unit (RTU) equipment, and the parameters mainly comprise output of a generator, bus voltage, tide in the system, load and reactive load, line current and electroplating amount;
the data analysis method service compares the data acquired by the data collection method service and checks whether the parameters are in a preset reasonable range; specifically, the method also vertically encrypts the calculated data, and the encryption method is as follows:
firstly, randomly selecting an elliptic curve ECC, randomly selecting a point on the elliptic curve ECC as a base point A, and enabling the order n of the base point A to be a prime number more than 10000; then randomly selecting an integer m as a private key s, calculating a public key K ═ mA, and disclosing three constant terms of an elliptic curve ECC, a base point A and the public key K.
When a message is received, the content of the message is converted into a point M on an elliptic curve ECC, and the specific conversion method comprises the following steps:
assuming that the prime field of the selected elliptic curve ECC is k bits, and the length of the message content to be converted is k-1-g, the following calculation is performed:
s1: calculate x ═ m | | |0g(ii) a m represents an ascii code corresponding to each character of the information content to be converted;
s2: calculating x' ═ x from the calculation result of S13+ ax + b mod q; wherein, (a, b) is a random point on the ECC, and the corresponding odd prime number in the prime field is q;
s3: if x' is the second residue of x, calculate
Figure BDA0003420971620000061
The corresponding point M is (x, y); otherwise, adding 1 to the g bit of x, and repeating the steps S2 and S3 until finding the corresponding point;
selecting a random number r and calculating a ciphertext mw, wherein the calculating method comprises the following steps: mw ═ rA, M + rR }
Wherein R is any point on the elliptic curve ECP, and R cannot be 0;
the method for decrypting the ciphertext mw comprises the following steps:
mw+rR-M+rsA
and automatically checking abnormal points of the base layer to search abnormal data points stored in a vertical encryption rule and data liniment analysis database, and for each type of data, automatically checking the abnormal points to search the abnormal data points by the following method:
for each kind of data, firstly calculating the Euclidean distance between every two data points in the kind of data, finding the longest Euclidean distance and defining a truncation distance dcDefined truncation distance dcAt most one third of the longest euclidean distance;
for any data point i, its relative density p is calculatedi：
Figure BDA0003420971620000062
Wherein d isijRepresenting the Euclidean distance between an arbitrary data point i and an arbitrary data point j of the same class, EP represents a symbolic function, when (d)ij-dc) At time < 0，λ(dij-dc) Is 1, otherwise is 0;
relative density p of each data point of the classiAfter sorting, calculating the minimum Euclidean distance from each data point to the data point, wherein the minimum Euclidean distance is greater than the relative density data point of each data point:
Figure BDA0003420971620000071
where jj represents any one data point having a relative density greater than the relative density of data point i, pjjRepresenting the relative density, d, of data points jji，jjRepresenting the euclidean distance of data point i to data point jj.
If the Euclidean distance between a data point and other data points which are larger than the first threshold value is larger than the truncation distance, and the relative density ranking of the data point is smaller than the second threshold value and larger than the minimum Euclidean distance of all the data points which are smaller than the relative density of the data point, the data point is an abnormal point.
The detection analysis and data comparison of the base layer completes the command issued by the service of the service layer data analysis method, and the comparison and preset analysis including the calculation of the median and the standard deviation are carried out on the provided data.
The invention also discloses a power grid dispatching control operation state automatic patrolling method based on the power grid dispatching control operation state automatic patrolling system, and FIG. 1 is a power grid dispatching patrolling system structure diagram, which comprises the following steps:
step 1, authenticating the identity of a user, entering step 2 if the identity is a power grid dispatcher, and ending the method if the identity is a system administrator;
in the invention, the task of a system administrator is to regulate and control the automatic patrol system for the dispatching control operation state of the power grid and manage personnel, which is not the main protection content of the invention;
step 2, collecting real-time parameters of the operation of the power system;
real-time parameters are acquired through Remote Terminal Unit (RTU) equipment, and the parameters comprise output of a generator, bus voltage, tide in a system, load and reactive load, line current and electroplating amount;
step 3, comparing the collected real-time operation parameters of the power system;
step 4, vertically encrypting the analysis result and the acquired data and then storing the analysis result and the acquired data;
step 5, when fault detection is needed, extracting and decrypting the stored data, and then detecting abnormal points;
and 6, feeding the abnormal points back to a user to complete the inspection of the dispatching control operation state of the power grid.
The present applicant has described and illustrated embodiments of the present invention in detail with reference to the accompanying drawings, but it should be understood by those skilled in the art that the above embodiments are merely preferred embodiments of the present invention, and the detailed description is only for the purpose of helping the reader to better understand the spirit of the present invention, and not for limiting the scope of the present invention, and on the contrary, any improvement or modification made based on the spirit of the present invention should fall within the scope of the present invention.

Claims (10)

1. The utility model provides an automatic system of patrolling of electric wire netting dispatch control running state, includes control layer, service layer, object layer and basic layer, its characterized in that:
the control layer comprises a vertical encryption user management and authentication system, a vertical encryption equipment communication and rule system, a vertical data analysis system and a vertical data acquisition system;
the service layer provides method service for the system of the control layer; the service layer provides identity authentication and user management services for the vertical encryption user management and authentication system, provides rule management services and command method services for the vertical encryption equipment communication and rule system, provides data analysis method services for the vertical data analysis system and provides data collection method services for the vertical data collection system;
the object layer provides a medium for storing the result stored by the service layer, and comprises a user database, a vertical encryption rule and a data acquisition and analysis database, wherein the data acquired and calculated by the service layer is stored in the user database;
the base layer provides upper layer data application functions including user verification, user management, IP detection, automatic abnormal point inspection, report viewing, data comparison and test analysis.
2. The power grid dispatching control running state automatic patrol system according to claim 1, wherein:
in the service layer, the identity authentication service uses an OAuth authentication method;
the user management service divides the users into a power grid dispatcher and a system administrator;
the rule management service and the command management service are respectively used for formulating management rules of the power equipment and executing commands used in different tasks;
the data collection method comprises the steps that real-time parameters of the operation of the power system are collected through Remote Terminal (RTU) equipment;
the data analysis method service performs comparative analysis on the data acquired by the data collection method service, and performs vertical encryption on the data obtained by calculation.
3. The power grid dispatching control running state automatic patrol system according to claim 2, wherein:
the real-time parameters of the operation of the power system comprise parameters of the output of the generator, the bus voltage, the power flow in the system, the load, the reactive load, the line current and the electroplating amount.
4. The power grid dispatching control running state automatic patrol system according to claim 2, wherein:
the vertical encryption method comprises the following steps:
firstly, randomly selecting an elliptic curve ECP, randomly selecting a point on the elliptic curve ECP as a base point A, and enabling the order n of the base point A to be a prime number more than 10000; then randomly selecting an integer m as a private key s, calculating a public key K which is mA, and disclosing three constant terms of an elliptic curve ECP, a base point A and the public key K;
when a message is received, the content of the message is converted into a point M on an elliptic curve ECP, a random number r is selected and a ciphertext mw is calculated,
the calculation method comprises the following steps:
mw＝{rA，M+rR}
wherein, R is any point on the elliptic curve ECP, and R can not be 0.
5. The power grid dispatching control running state automatic patrol system according to claim 3, wherein:
in the vertical encryption method, the method for decrypting the ciphertext mw is as follows:
mw+rR-M+rsA。
6. the power grid dispatching control running state automatic patrol system according to claim 4, wherein:
the method for converting the message content into a point M on the elliptic curve ECP comprises the following steps:
assuming that the prime field of the selected elliptic curve ECC is k bits, and the length of the message content to be converted is k-1-g, the following calculation is performed:
s1: calculate x ═ m | | |0g(ii) a m represents an ascii code corresponding to each character of the information content to be converted;
s2: calculating x' ═ x from the calculation result of S13+ ax + b mod q; wherein, (a, b) is a random point on the ECC, and the corresponding odd prime number in the prime field is q;
s3: if x' is the second residue of x, calculate
Figure FDA0003420971610000021
The corresponding point M is (x, y); otherwise, the g-th bit of x is added with 1 and then the steps S2 and S3 are repeated until the corresponding point is found.
7. The power grid dispatching control running state automatic patrol system according to claim 1, wherein:
the method for automatically checking the abnormal point comprises the following steps:
for each kind of data, firstly calculating the Euclidean distance between every two data points in the kind of data, finding the longest Euclidean distance and defining a truncation distance dcDefined truncation distance dcAt most one third of the longest euclidean distance;
for any data point i, its relative density p is calculatedi：
Figure FDA0003420971610000031
Wherein d isijRepresenting the Euclidean distance between an arbitrary data point i and an arbitrary data point j of the same type, K represents a symbolic function, when (d)ij-dc) When < 0, λ (d)ij-dc) Is 1, otherwise is 0;
relative density p of each data point of the classiAfter sorting, calculating the minimum Euclidean distance from each data point to the data point, wherein the minimum Euclidean distance is greater than the relative density data point of each data point:
Figure FDA0003420971610000032
where jj represents any one data point having a relative density greater than the relative density of data point i, pjjRepresenting the relative density, d, of data points jji，jjRepresenting the euclidean distance of data point i to data point jj.
8. The power grid dispatching control running state automatic patrol system according to claim 1 or 6, wherein:
in the method of automatically checking the abnormal point,
if the Euclidean distance between a data point and other data points which are larger than the first threshold value is larger than the truncation distance, and the relative density ranking of the data point is smaller than the second threshold value and larger than the minimum Euclidean distance of all the data points which are smaller than the relative density of the data point, the data point is an abnormal point.
9. The power grid dispatching control running state automatic patrol system according to claim 1, wherein:
the detection analysis and data comparison of the base layer completes the command issued by the service of the service layer data analysis method, and the comparison and preset analysis including the calculation of the median and the standard deviation are carried out on the provided data.
10. The method for automatically patrolling the scheduling control operation state of the power grid of the system for automatically patrolling the scheduling control operation state of the power grid according to any one of claims 1 to 9, wherein the method for automatically patrolling the scheduling control operation state of the power grid comprises the following steps:
step 1, authenticating the identity of a user, if the user is a power grid dispatcher, entering step 2, if the user is a system administrator, otherwise, ending the method;
step 2, collecting real-time parameters of the operation of the power system;
real-time parameters are acquired through Remote Terminal Unit (RTU) equipment, and the parameters comprise output of a generator, bus voltage, tide in a system, load and reactive load, line current and electroplating amount;
step 3, comparing the collected real-time operation parameters of the power system;
step 4, vertically encrypting the analysis result and the acquired data and then storing the analysis result and the acquired data;
step 5, when fault detection is needed, extracting and decrypting the stored data, and then detecting abnormal points;
and 6, feeding the abnormal points back to a user to complete the inspection of the dispatching control operation state of the power grid.
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