CN114050543B - Online real-time automatic checking method for relay protection fixed value of information protection system - Google Patents
Online real-time automatic checking method for relay protection fixed value of information protection system Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/006—Calibration or setting of parameters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0092—Details of emergency protective circuit arrangements concerning the data processing means, e.g. expert systems, neural networks
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Abstract
The invention discloses an online real-time automatic checking method for relay protection fixed values of a security system, which comprises the steps of calculating a fixed value list through a fixed value setting system, and storing the fixed value list in a database in a file form as a standard fixed value list after confirming that the fixed value list is correct; the security system invokes the device fixed value of the current fixed value area and the device fixed value of other fixed value areas when the device runs from the transformer substation; the automatic comparison operation of the fixed value is executed according to the operated fixed value area code, the set value of the equipment is compared with the standard fixed value single content item by item, the alarm prompt is carried out according to the comparison result, the operation fixed value of the relay protection equipment is automatically summoned through the information protection system, the operation fixed value is checked and compared with the standard fixed value, hidden dangers are timely found, workers do not need to check on site of a transformer substation, the labor and material resources, the unit traffic risk and the site operation risk are reduced, the error probability is reduced through automatic check, the occurrence rate of power grid accidents is reduced, and the efficiency of relay protection fixed value check is improved.
Description
Technical Field
The invention relates to the technical field of relay protection constant value verification, in particular to an online real-time automatic verification method for relay protection constant value of a security system.
Background
The relay protection device is important secondary equipment in an electric power system, whether the reliable operation of the relay protection device directly affects the safety and stability of the system, in order to improve the stability of the electric network equipment, the electric network is ensured to have more safety, at least two protection fixed value checking works are needed to be carried out by staff each year, with the increasingly mature related technologies such as a distributed power supply, an electric automobile and the like in recent years, the structure of the electric network is also changed at moment, the operation fixed value is also required to be frequently modified due to the change of an operation mode, the traditional relay protection device fixed value is correctly checked and completed by manpower, but various objective factors such as tight field working time, heavy task, high strength and the like exist due to the manual checking mode, the fact that the operation fixed value is completely correct cannot be ensured, and the fixed value error in operation is caused due to the fact that the fixed value is generated by the device reason, if the error cannot be found in time, the hidden danger such as misoperation of the equipment is avoided, the automatic operation fixed value of the relay protection device can be realized through the real-time fixed value calling of the relay protection device of the protection system, the operation fixed value is checked and compared with the standard fixed value frequently, the situation that the operation fixed value is checked and the manual checking is avoided, the hidden danger of the relay protection device is avoided, and the error checking and the operation is avoided.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the invention, which should not be used to limit the scope of the invention.
In view of the existing problems, the invention provides an online real-time automatic checking method for relay protection constant value of a security system.
Therefore, the technical problems solved by the invention are as follows: the manual checking workload is large, negligence on work is easy to occur, and the phenomena of false checking and missing checking exist, so that the manpower resource is wasted.
In order to solve the technical problems, the invention provides the following technical scheme: the online real-time automatic checking method for relay protection constant value of the information protection system comprises,
calculating a fixed value list through a fixed value setting system, and storing the fixed value list serving as a standard fixed value list in a database in a file form after confirming that the fixed value list is correct;
the security system invokes the device fixed value of the current fixed value area and the device fixed value of other fixed value areas when the device runs from the transformer substation;
and executing constant value automatic comparison operation according to the running constant value area code, comparing the device setting value with standard constant value single content item by item, and carrying out alarm prompt according to the comparison result.
As a preferable scheme of the online real-time automatic checking method for the relay protection constant value of the security system, the invention comprises the following steps: the fixed value setting system is deployed in a dispatching safety III area, and the information protection system is deployed in a dispatching safety II area.
As a preferable scheme of the online real-time automatic checking method for the relay protection constant value of the security system, the invention comprises the following steps: and a network isolation device is arranged between the dispatching safety III area and the dispatching safety II area, and standard fixed value single data transmission is realized through a reverse isolation device.
As a preferable scheme of the online real-time automatic checking method for the relay protection constant value of the security system, the invention comprises the following steps: the fixed value setting system calculates a fixed value list, and the fixed value list is stored in a database in a file form as a standard fixed value list after confirming that the fixed value list is correct, and the fixed value list comprises the following steps:
the original fixed value is stored in the database in a mode of historical fixed value with time stamp information.
As a preferable scheme of the online real-time automatic checking method for the relay protection constant value of the security system, the invention comprises the following steps: the security system invokes the device fixed value of the current fixed value area and the device fixed value of other fixed value areas when the device runs from the transformer substation, and the device fixed value comprises:
the information protection system is connected to the information protection sub-station of the transformer substation through a dispatching data network, and the information protection sub-station and each relay protection device in the transformer substation perform data interaction through an in-station network.
As a preferable scheme of the online real-time automatic checking method for the relay protection constant value of the security system, the invention comprises the following steps: the information protection system calls the device fixed value of the current fixed value area and the device fixed value of other fixed value areas when the device operates from the transformer substation, and the information protection system further comprises:
dividing the daily time into a plurality of equal time periods, taking n time nodes for each time period, and calling a device fixed value at the time nodes;
further acquiring the data transmission speed of the corresponding time node, and establishing a coordinate system by taking the time node information as an abscissa and the data transmission speed as an ordinate;
performing straight line fitting on the data in each time period to obtain an included angle theta between the straight line and the abscissa i ；
Taking the included angle theta i The method comprises the steps that a time period corresponding to an included angle threshold value is larger than or equal to a time period, and the maximum data transmission speed in the time period is obtained;
when the maximum data transmission speed is greater than or equal to a transmission speed threshold, taking the average data transmission speed of the corresponding time period, establishing an average data transmission speed set, and setting m time periods in the average data transmission speed set;
for the average data transmission speed set, the minimum average data transmission speed V is taken min When (V) m-1 -V min )/V min When the value of (2) is greater than or equal to the preset value, marking the (m-1) th time period, wherein V m-1 An average data transmission speed in the m-1 time period;
and the security system invokes the device fixed value of the current fixed value area and the device fixed value of other fixed value areas of the device operation from the transformer substation at any time node in the marked time period.
As a preferable scheme of the online real-time automatic checking method for the relay protection constant value of the security system, the invention comprises the following steps: the included angle theta is taken i The time period corresponding to the included angle threshold value is greater than or equal to, and the maximum data transmission speed in the time period is obtained by the steps of:
and sequencing the selected time periods, merging the previous time period and the next time period into a time period if the cut-off time node of the previous time period is the same as the starting time node of the next time period, acquiring the maximum data transmission speed in the merged time period, and if the average data transmission speed is taken, obtaining the average data transmission speed in the merged time period.
As a preferable scheme of the online real-time automatic checking method for the relay protection constant value of the security system, the invention comprises the following steps: the executing the automatic comparison operation of the fixed value according to the running fixed value area code, comparing the set value of the equipment with the standard fixed value single content item by item, and carrying out the alarm prompt according to the comparison result comprises the following steps:
and the information protection system checks the current operation fixed value and fixed value area of the relay protection device in real time on line according to the input protection standard fixed value and fixed value checking strategy, and when the fixed value and the fixed value area are inconsistent with the standard value, the system generates corresponding fixed value abnormal warning.
As a preferable scheme of the online real-time automatic checking method for the relay protection constant value of the security system, the invention comprises the following steps: the standard constant value list interacted by the information protection system and the constant value setting system can adopt an E file format or an EXCEL format.
As a preferable scheme of the online real-time automatic checking method for the relay protection constant value of the security system, the invention comprises the following steps: and the signal-protecting substation can only call the fixed value of one relay protection device at the same time to check.
The invention has the beneficial effects that: according to the method, the operation fixed value of the relay protection equipment is automatically summoned through the information protection system and checked and compared with the standard fixed value, hidden danger is found timely, relay protection staff does not need to check the fixed value of the relay protection equipment to a transformer substation site, traffic time and handling time are reduced, unit traffic risks and site operation risks are reduced, the probability of error of the staff relative to a machine is high, the error probability is reduced through automatic check, the occurrence rate of power grid accidents is reduced, and the efficiency of checking the relay protection fixed value is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic diagram of steps of an online real-time automatic checking method for relay protection constant value of a security system.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
While the embodiments of the present invention have been illustrated and described in detail in the drawings, the cross-sectional view of the device structure is not to scale in the general sense for ease of illustration, and the drawings are merely exemplary and should not be construed as limiting the scope of the invention. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Also in the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper, lower, inner and outer", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first, second, or third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The terms "mounted, connected, and coupled" should be construed broadly in this disclosure unless otherwise specifically indicated and defined, such as: can be fixed connection, detachable connection or integral connection; it may also be a mechanical connection, an electrical connection, or a direct connection, or may be indirectly connected through an intermediate medium, or may be a communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
Referring to fig. 1, the embodiment provides an online real-time automatic checking method for relay protection constant value of a security system, which comprises,
1) Calculating a fixed value list through a fixed value setting system, and storing the fixed value list serving as a standard fixed value list in a database in a file form after confirming that the fixed value list is correct;
2) The security system invokes the device fixed value of the current fixed value area and the device fixed value of other fixed value areas when the device runs from the transformer substation;
3) And executing constant value automatic comparison operation according to the running constant value area code, comparing the device setting value with standard constant value single content item by item, and carrying out alarm prompt according to the comparison result.
The fixed value setting system is deployed in a dispatching safety III area, and the information protection system is deployed in a dispatching safety II area.
And a network isolation device is arranged between the dispatching safety III area and the dispatching safety II area, and standard fixed value single data transmission is realized through a reverse isolation device.
The fixed value setting system calculates a fixed value list, and the fixed value list is stored in a database in a file form as a standard fixed value list after confirming that the fixed value list is correct, and the fixed value list comprises the following steps:
the original fixed value is stored in the database in a mode of historical fixed value with time stamp information.
The security system calls the device fixed value of the current fixed value area and the device fixed value of other fixed value areas when the device runs from the transformer substation, and the device fixed value comprises:
the information protection system is accessed to an information protection substation of the transformer substation through a dispatching data network, and the information protection substation and each relay protection device in the transformer substation perform data interaction through an in-station network.
The security system is used for calling the device fixed value of the current fixed value area and the device fixed value of other fixed value areas when the device runs from the transformer substation, and the security system further comprises:
dividing the daily time into a plurality of equal time periods, taking n time nodes in each time period, and calling a device fixed value in the time nodes;
further acquiring the data transmission speed of the corresponding time node, and establishing a coordinate system by taking the time node information as an abscissa and the data transmission speed as an ordinate;
performing straight line fitting on the data in each time period to obtain an included angle theta between the straight line and the abscissa i ；
Taking the included angle theta i The method comprises the steps that a time period corresponding to an included angle threshold value is larger than or equal to a time period, and the maximum data transmission speed in the time period is obtained;
when the maximum data transmission speed is greater than or equal to a transmission speed threshold, taking the average data transmission speed of the corresponding time period, establishing an average data transmission speed set, and setting the average data transmission speed set to comprise m time periods;
for the average data transmission speed set, the minimum average data transmission speed V is taken min When (V) m-1 -V min )/V min When the value of (2) is greater than or equal to the preset value, marking the (m-1) th time period, wherein V m-1 An average data transmission speed in the m-1 th time period;
the security system retrieves the device values of the current value area and the device values of other value areas of the device operation from the transformer substation at any time node in the marked time period.
Taking the included angle theta i A time period corresponding to the included angle threshold value is larger than or equal to, and the maximum data transmission speed packet in the time period is acquiredThe method comprises the following steps:
and sequencing the selected time periods, merging the previous time period and the next time period into a time period if the cut-off time node of the previous time period is the same as the starting time node of the next time period, acquiring the maximum data transmission speed in the merged time period, and if the average data transmission speed is acquired, acquiring the average data transmission speed in the merged time period.
Executing the automatic comparison operation of the fixed value according to the running fixed value area code, comparing the set value of the equipment with the standard fixed value single content item by item, and carrying out the alarm prompt according to the comparison result comprises the following steps:
and the information protection system checks the current operation fixed value and fixed value area of the relay protection device in real time on line according to the input protection standard fixed value and fixed value checking strategy, and when the fixed value and the fixed value area are inconsistent with the standard value, the system generates corresponding fixed value abnormal warning.
The standard constant value list interacted by the information protection system and the constant value setting system can be in an E file format or an EXCEL format.
The signal-protecting substation can only call a fixed value of one relay protection device at the same time to check.
Example 2
Referring to fig. 1, this embodiment provides an online real-time automatic checking method for relay protection fixed values of a security system, taking checking fixed values of a 110kv substation as an example, checking relay protection fixed values of a total station protection device for about 4min, checking each fixed value and obtaining a final comparison result for about 8min, if only checking one set of fixed values of the protection device, manually operating by a worker, generating a fixed value list from simulation failure information to comparison completion only for 2min, checking by the worker, and if the worker needs to drive to go to a site to print the fixed values of each protection device, then one set of protection device needs at least two people for 10min, one substation in a certain area has an average of 40 sets of relay protection devices, 21 sets of substations in the whole county are only referred to and checked, and the following table is the data comparison when using the method and manual checking.
As can be seen from the data in the table, the use of the constant value automatic checking method can greatly improve the working efficiency, save manpower and material resources and reduce the occurrence of the conditions of artificial omission check and false check in the check.
It should be appreciated that embodiments of the invention may be implemented or realized by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer readable memory. The methods may be implemented in a computer program using standard programming techniques, including a non-transitory computer readable storage medium configured with a computer program, where the storage medium so configured causes a computer to operate in a specific and predefined manner, in accordance with the methods and drawings described in the specific embodiments. Each program may be implemented in a high level procedural or object oriented programming language to communicate with a computer system. However, the program(s) can be implemented in assembly or machine language, if desired. In any case, the language may be a compiled or interpreted language. Furthermore, the program can be run on a programmed application specific integrated circuit for this purpose.
Furthermore, the operations of the processes described herein may be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The processes (or variations and/or combinations thereof) described herein may be performed under control of one or more computer systems configured with executable instructions, and may be implemented as code (e.g., executable instructions, one or more computer programs, or one or more applications), by hardware, or combinations thereof, collectively executing on one or more processors. The computer program includes a plurality of instructions executable by one or more processors.
Further, the method may be implemented in any type of computing platform operatively connected to a suitable computing platform, including, but not limited to, a personal computer, mini-computer, mainframe, workstation, network or distributed computing environment, separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, and so forth. Aspects of the invention may be implemented in machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, optical read and/or write storage medium, RAM, ROM, etc., such that it is readable by a programmable computer, which when read by a computer, is operable to configure and operate the computer to perform the processes described herein. Further, the machine readable code, or portions thereof, may be transmitted over a wired or wireless network. When such media includes instructions or programs that, in conjunction with a microprocessor or other data processor, implement the steps described above, the invention described herein includes these and other different types of non-transitory computer-readable storage media. The invention also includes the computer itself when programmed according to the methods and techniques of the present invention. The computer program can be applied to the input data to perform the functions described herein, thereby converting the input data to generate output data that is stored to the non-volatile memory. The output information may also be applied to one or more output devices such as a display. In a preferred embodiment of the invention, the transformed data represents physical and tangible objects, including specific visual depictions of physical and tangible objects produced on a display.
As used in this application, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, the components may be, but are not limited to: a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of example, both an application running on a computing device and the computing device can be a component. One or more components may reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between two or more computers. Furthermore, these components can execute from various computer readable media having various data structures thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from one component interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (5)
1. The online real-time automatic checking method for the relay protection constant value of the information protection system is characterized by comprising the following steps of: comprising the steps of (a) a step of,
calculating a fixed value list through a fixed value setting system, and storing the fixed value list serving as a standard fixed value list in a database in a file form after confirming that the fixed value list is correct;
the security system invokes the device fixed value of the current fixed value area and the device fixed value of other fixed value areas when the device runs from the transformer substation;
executing constant value automatic comparison operation according to the running constant value area code, comparing the device setting constant value with standard constant value single content item by item, and carrying out alarm prompt according to the comparison result;
the fixed value setting system is deployed in a dispatching safety III area, and the information protection system is deployed in a dispatching safety II area;
a network isolation device is arranged between the dispatching safety III area and the dispatching safety II area, and standard fixed value single data transmission is realized through a reverse isolation device;
the fixed value setting system calculates a fixed value list, and the fixed value list is stored in a database in a file form as a standard fixed value list after confirming that the fixed value list is correct, and the fixed value list comprises the following steps: the original fixed value in the database is stored in a mode of historical fixed value with time stamp information;
the security system invokes the device fixed value of the current fixed value area and the device fixed value of other fixed value areas when the device runs from the transformer substation, and the device fixed value comprises: the information protection system is accessed to an information protection sub-station of the transformer substation through a dispatching data network, and the information protection sub-station and each relay protection device in the transformer substation perform data interaction through an in-station network;
the information protection system calls the device fixed value of the current fixed value area and the device fixed value of other fixed value areas when the device operates from the transformer substation, and the information protection system further comprises:
dividing the daily time into a plurality of equal time periods, taking n time nodes for each time period, and calling a device fixed value at the time nodes;
further acquiring the data transmission speed of the corresponding time node, and establishing a coordinate system by taking the time node information as an abscissa and the data transmission speed as an ordinate;
performing straight line fitting on the data in each time period to obtain an included angle theta between the straight line and the abscissa i ；
Taking the included angle theta i The method comprises the steps that a time period corresponding to an included angle threshold value is larger than or equal to a time period, and the maximum data transmission speed in the time period is obtained;
when the maximum data transmission speed is greater than or equal to a transmission speed threshold, taking the average data transmission speed of the corresponding time period, establishing an average data transmission speed set, and setting m time periods in the average data transmission speed set;
for the average data transmission speed set, the minimum average data transmission speed V is taken min When (V) m-1 -V min )/V min When the value of (2) is greater than or equal to the preset value, marking the (m-1) th time period, wherein V m-1 An average data transmission speed in the m-1 time period;
and the security system invokes the device fixed value of the current fixed value area and the device fixed value of other fixed value areas of the device operation from the transformer substation at any time node in the marked time period.
2. The online real-time automatic relay protection constant value of the information protection system according to claim 1The checking method is characterized in that: the included angle theta is taken i The time period corresponding to the included angle threshold value is greater than or equal to, and the maximum data transmission speed in the time period is obtained by the steps of:
and sequencing the selected time periods, merging the previous time period and the next time period into a time period if the cut-off time node of the previous time period is the same as the starting time node of the next time period, acquiring the maximum data transmission speed in the merged time period, and if the average data transmission speed is taken, obtaining the average data transmission speed in the merged time period.
3. The online real-time automatic checking method for relay protection constant value of information protection system according to claim 2, wherein the method is characterized in that: the executing the automatic comparison operation of the fixed value according to the running fixed value area code, comparing the set value of the equipment with the standard fixed value single content item by item, and carrying out the alarm prompt according to the comparison result comprises the following steps:
and the information protection system checks the current operation fixed value and fixed value area of the relay protection device in real time on line according to the input protection standard fixed value and fixed value checking strategy, and when the fixed value and the fixed value area are inconsistent with the standard value, the system generates corresponding fixed value abnormal warning.
4. The method for automatically checking relay protection constant value of the information protection system in real time on line according to claim 3, wherein the method comprises the following steps: the standard constant value list interacted by the information protection system and the constant value setting system can adopt an E file format or an EXCEL format.
5. The method for automatically checking the relay protection constant value of the information protection system in real time on line according to claim 4 is characterized in that: and the signal-protecting substation can only call the fixed value of one relay protection device at the same time to check.
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| CN103580283A (en) * | 2013-10-31 | 2014-02-12 | 广东电网公司东莞供电局 | Power grid protecting device constant value checking system and method based on information protecting system |
| CN106451377A (en) * | 2016-11-02 | 2017-02-22 | 国家电网公司 | Constant value region remote switching security checking method of relay protection device |
| CN109360415A (en) * | 2018-09-30 | 2019-02-19 | 北京工业大学 | A kind of road traffic flow disorder data recognition method |
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