CN213717610U - Distribution network protection fixed value setting system based on full information data flow - Google Patents
Distribution network protection fixed value setting system based on full information data flow Download PDFInfo
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- CN213717610U CN213717610U CN202022430363.2U CN202022430363U CN213717610U CN 213717610 U CN213717610 U CN 213717610U CN 202022430363 U CN202022430363 U CN 202022430363U CN 213717610 U CN213717610 U CN 213717610U
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Abstract
The utility model discloses a join in marriage net protection definite value system of setting based on complete information data flow, including definite value information management unit, definite value information acquisition unit, diagnosis unit and early warning unit, definite value information management unit is connected with definite value information acquisition unit, diagnosis unit and early warning unit communication respectively, definite value information acquisition unit is connected with the diagnosis unit communication, the diagnosis unit is connected with the early warning unit communication. The constant value output unit, the constant value input unit and the constant value data acquisition unit are used for receiving and feeding back data output of real-time operation of a power grid and protection constant values required by a distribution transformer, so that the situations of excessive report and failure report of data are avoided; and the data diagnosis unit, the abnormal data judgment unit and the PLC central processing unit are circularly compared to quickly judge whether the fixed value is abnormal or not, and the early warning emission unit sends out an early warning information prompt under the abnormal condition, so that the troubleshooting efficiency is improved, and the accuracy of the abnormal fixed value is ensured.
Description
Technical Field
The utility model relates to a join in marriage net power protection technical field, specifically be a join in marriage net protection constant value system of setting based on complete information data flow.
Background
As is known, a distribution network refers to a power network which receives electric energy from a transmission network or a regional power plant, distributes the electric energy to various users on site through distribution facilities or distributes the electric energy to various users step by step according to voltage, and is composed of overhead lines, cables, towers, distribution transformers, isolating switches, reactive compensators, auxiliary facilities and the like. Therefore, the power distribution network protection has very important practical significance for recovering the power supply of the non-fault area by isolating the fault area.
In the operation and maintenance process of the power distribution network, the equipment safety and the personal safety of related personnel in the power distribution network need to be protected in a fixed value setting mode, namely, safety accidents are avoided by setting the fixed value of each power distribution management equipment in the power distribution network. In practical application, for a device to be subjected to constant value setting, each constant value in the device operation process needs to satisfy a plurality of setting rules. The existing power distribution network anomaly detection mode still adopts a manual mode to carry out anomaly checking and anomaly diagnosis and analysis on fixed value data. However, with the continuous development of the power grid scale, most of the existing manual investigation and diagnosis analysis have the situations of more data reporting and missing data reporting, and cannot perform early warning treatment on abnormal fixed values in time, so that the investigation efficiency is low, and the accuracy of the abnormal fixed values cannot be ensured. Therefore, how to realize efficient abnormal investigation of the power distribution network and ensure the accuracy of the fixed value abnormality is a problem to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a be not enough to the above-mentioned of prior art, the utility model provides a join in marriage net protection definite value system of setting based on complete information data flow.
The utility model adopts the technical proposal that a distribution network protection fixed value setting system based on full information data flow comprises a fixed value information management unit, a fixed value information acquisition unit, a diagnosis unit and an early warning unit,
the constant value information management unit comprises a PLC central processing unit and a database, and the PLC central processing unit is connected with the database;
the fixed value information acquisition unit comprises a fixed value output unit, a fixed value input unit, a fixed value data acquisition unit and a fixed value monitoring unit, wherein the fixed value output unit is connected with the fixed value input unit, and the fixed value input unit is connected with the fixed value data acquisition unit;
the diagnosis unit comprises a data diagnosis unit, an abnormal data judgment unit and an abnormal data statistics unit, and the data diagnosis unit is connected with the abnormal data judgment unit;
the early warning unit comprises an early warning threshold setting unit, an early warning signal acquisition unit, an early warning information receiving unit and an early warning transmitting unit, wherein the early warning signal acquisition unit is connected with the early warning information receiving unit, and the early warning information receiving unit is connected with the early warning transmitting unit;
the constant value information management unit is respectively in communication connection with the constant value information acquisition unit, the diagnosis unit and the early warning unit, the constant value information acquisition unit is in communication connection with the diagnosis unit, and the diagnosis unit is in communication connection with the early warning unit.
The PLC central processing unit is respectively connected with the fixed value data acquisition unit, the fixed value monitoring unit, the data diagnosis unit, the abnormal data judgment unit, the abnormal data statistic unit and the early warning threshold value setting unit; the constant value monitoring unit is further connected with the abnormal data counting unit, and the abnormal data judging unit is further connected with the early warning signal collecting unit.
The database is used for storing basic data information, standard setting values and abnormal information; the constant value output unit is used for outputting data of real-time operation of a power grid and a protection constant value required by a distribution transformer, the constant value input unit is used for inputting the data of the real-time operation of the power grid of the constant value output unit and receiving the protection constant value required by the distribution transformer in real time, the constant value data acquisition unit is used for acquiring and receiving the final data of the real-time operation of the power grid and the protection constant value required by the distribution transformer, and the constant value monitoring unit is used for displaying basic data information, standard setting value and abnormal information of the power grid in real time;
the data diagnosis unit is used for analyzing and calculating the acquired final real-time running data of the power grid, carrying out primary diagnosis, diagnosing the re-screened abnormal fixed value data transmitted by the PLC central processing unit, judging whether the data is abnormal or not, screening the abnormal data and transmitting the abnormal data to the abnormal data judgment unit; the abnormal data judging unit is used for comparing the data judged to be abnormal by the data diagnosis unit with a threshold value set by the PLC central processing unit reading database, screening out the constant value data with abnormal comparison again, and transmitting the abnormal constant value data to the PLC central processing unit and the early warning signal acquisition unit; the abnormal data statistical unit is used for counting data with abnormal fixed values and transmitting the data with abnormal fixed values to the fixed value monitoring unit or the PLC central processing unit;
the early warning threshold setting unit is used for monitoring the comparison of fixed value data and diagnosing abnormal data according to the early warning threshold.
The beneficial effects of the utility model are that, 1 the utility model discloses a definite value output unit, definite value input unit and definite value data acquisition unit receive the feedback with the data output of the real-time operation of electric wire netting and the protection definite value that distribution transformer needs, have avoided the emergence of the many newspapers of data and the condition of reporting missing. 2. The utility model discloses whether calculate the data analysis of gathering and diagnose unusual by the data diagnosis unit to at the data diagnosis unit, whether the circulation contrast between unit and PLC central processing unit is judged to unusual data, has realized fast that the definite value exists unusually, and sends early warning information suggestion through early warning transmitting element under the abnormal conditions, has improved the efficiency of investigation, and has ensured the unusual accuracy of definite value.
The present invention will be described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a block diagram of the system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
Referring to fig. 1, the present invention provides a technical solution: a distribution network protection constant value setting system based on full information data flow comprises a constant value information management unit, a constant value information acquisition unit, a diagnosis unit and an early warning unit, wherein the constant value information management unit is connected with the constant value information acquisition unit, the constant value information management unit is connected with the diagnosis unit, the constant value information management unit is connected with the constant value information acquisition unit, and the constant value information management unit is connected with the early warning unit;
the constant value information management unit comprises a PLC central processing unit and a database, and the PLC central processing unit is connected with the database;
the diagnosis unit comprises a data diagnosis unit, an abnormal data judgment unit and an abnormal data statistic unit, the data diagnosis unit is connected with the abnormal data judgment unit, the abnormal data judgment unit is connected with the PLC central processing unit, and the central processing unit is connected with the data diagnosis unit;
the early warning unit comprises an early warning threshold setting unit, an alarm signal acquisition unit, an early warning information receiving unit and an early warning transmitting unit, the early warning threshold setting unit is connected with the PLC central processing unit, and the abnormal data judgment unit is connected with the early warning signal acquisition unit.
In this embodiment, specifically: the fixed value information management unit comprises a fixed value output unit, a fixed value input unit, a fixed value data acquisition unit and a fixed value monitoring unit, the fixed value output unit is connected with the fixed value input unit, the fixed value input unit is connected with the fixed value data acquisition unit, the data of the real-time operation of the power grid and the protection constant value required by the distribution transformer are output through the constant value output unit, and the data input of the real-time operation of the power grid and the protection constant value required by the distribution transformer are received in real time through the constant value input unit, the data output of the power grid running in real time and the protection constant value required by the distribution transformer are finally collected and received through the constant value data collection unit, and transmits the received protection setting value to a PLC central processing unit connected to the setting value information management unit, and transmitting the collected data of the protection fixed value to a diagnosis unit through a PLC central processing unit to perform abnormity diagnosis.
In this embodiment, specifically: the constant value output unit is used for outputting the data of the real-time operation of the power grid, the constant value input unit is used for inputting the data of the real-time operation of the power grid of the constant value output unit, and the constant value data acquisition unit is used for acquiring the final data of the real-time operation of the power grid.
In this embodiment, specifically: the constant value data acquisition unit is connected with the PLC central processing unit, receives data transmission sent by the constant value data acquisition unit through the PLC central processing unit, and then receives and feeds back finally acquired data output of real-time operation of a power grid and a protection constant value required by a distribution transformer to the PLC central processing unit.
In this embodiment, specifically: the PLC central processing unit is connected with the fixed value monitoring unit, the abnormal data statistical unit is connected with the fixed value monitoring unit, the fixed value monitoring unit displays a display interface for a system, the fixed value monitoring unit calls information in the database through the PLC central processing unit, basic data information, standard setting values and abnormal information stored in the database are called out, real-time display is achieved through the fixed value monitoring unit, fixed value abnormal data counted by the abnormal data statistical unit are directly called out independently through the PLC central processing unit, and data of the fixed value abnormal data and the abnormal data are obviously distinguished.
In this embodiment, specifically: the data diagnosis unit is used for analyzing, calculating and diagnosing the acquired data, judging whether the data information is abnormal or not, screening the abnormal data and transmitting the abnormal data to the abnormal data judgment unit for judgment again, the PLC central processing unit transmits the fixed value data acquired by the fixed value data acquisition unit to the data diagnosis unit for preliminary diagnosis, and comparing with the threshold set by the PLC central processing unit reading database, screening out the abnormal data judged by comparison, transmitting to the data abnormity judging unit, comparing with the threshold set by the PLC central processing unit reading database again, screening out the constant value data with abnormal comparison again, feeding back the abnormal constant value data screened twice to the PLC central processing unit again by the abnormal data judging unit, and then the data is circulated to the data diagnosis unit again, and after the data is circulated and screened for one time, the data is fed back to the early warning threshold value setting unit through the PLC central processing unit to be compared with the early warning threshold value.
In this embodiment, specifically: the database is used for storing basic data information, standard setting values and abnormal information, real-time data of the power grid collected by the constant value data collection unit are compared through the PLC central processing unit, multiple groups of data are stored in the database through the PLC central processing unit, real-time sharing is achieved through the constant value monitoring unit, faults can be found and repaired in time through a database management system of the database, and therefore the data are prevented from being damaged or lost, and safety and reliability of the data are guaranteed.
In this embodiment, specifically: the early warning threshold value setting unit monitors comparison of fixed value data and abnormal data diagnosis according to the early warning threshold value, abnormal fixed value data after circular screening are fed back to the early warning threshold value setting unit through the PLC central processing unit to be compared with the early warning threshold value, and if the compared data are abnormal and reach the early warning value set by the early warning threshold value setting unit, an early warning information prompt is sent through the early warning transmitting unit.
In summary, the working principle and the working process of the distribution network protection constant value setting system based on the full information data flow are as follows: when the power distribution transformer protection constant value detection device is used, the constant value output unit outputs data of real-time operation of a power grid and protection constant values required by a distribution transformer, the constant value input unit receives data of real-time operation of the power grid and protection constant values required by the distribution transformer in real time, the constant value data acquisition unit receives finally acquired data output of real-time operation of the power grid and protection constant values required by the distribution transformer, the received protection constant values are transmitted to the PLC central processing unit of the constant value information management unit, the data acquired and protected constant values are transmitted to the diagnosis unit through the PLC central processing unit for abnormality diagnosis, the data diagnosis unit is used for analyzing, calculating and diagnosing and processing the acquired data, whether the data information is abnormal or not is judged, the data judged to be abnormal are screened out and transmitted to the abnormal data judgment unit for judgment again, and the PLC central processing unit transmits the constant value data acquired by the constant value data acquisition unit to the data diagnosis unit for preliminary diagnosis When the abnormal data is judged, the abnormal data is screened out and transmitted to the data abnormity judging unit to be compared with the threshold value set by the PLC central processing unit reading database again, the fixed value data with abnormal contrast is screened out again, the abnormal data judging unit feeds back the abnormal fixed value data with secondary screening to the PLC central processing unit again, then the abnormal fixed value data is circulated to the data diagnosis unit again, after the primary circulation screening, the abnormal fixed value data after the circulation screening is fed back to the early warning threshold value setting unit through the PLC central processing unit to be compared with the early warning threshold value, if the abnormal fixed value data exists and reaches the early warning value set by the early warning threshold value setting unit, the early warning information is sent out through the early warning transmitting unit to prompt, and a plurality of groups of data are stored in the database through the PLC central processing unit, the real-time sharing is realized through the fixed value monitoring unit, the database management system can find and repair faults in time through the database self-contained database management system, so that data is prevented from being damaged or lost, the safety and the reliability of the data are ensured, the fixed value monitoring unit displays a display interface for the system, the fixed value monitoring unit calls information in the database through the PLC central processing unit, basic data information, standard setting values and abnormal information stored in the database are called out, the real-time display is realized through the fixed value monitoring unit, fixed value abnormal data counted by the abnormal data counting unit can be called out independently through the PLC central processing unit, and the data of the fixed value abnormal data and the abnormal data are obviously distinguished.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A distribution network protection fixed value setting system based on full information data flow is characterized in that: comprises a fixed value information management unit, a fixed value information acquisition unit, a diagnosis unit and an early warning unit,
the constant value information management unit comprises a PLC central processing unit and a database, and the PLC central processing unit is connected with the database;
the fixed value information acquisition unit comprises a fixed value output unit, a fixed value input unit, a fixed value data acquisition unit and a fixed value monitoring unit, wherein the fixed value output unit is connected with the fixed value input unit, and the fixed value input unit is connected with the fixed value data acquisition unit;
the diagnosis unit comprises a data diagnosis unit, an abnormal data judgment unit and an abnormal data statistics unit, and the data diagnosis unit is connected with the abnormal data judgment unit;
the early warning unit comprises an early warning threshold setting unit, an early warning signal acquisition unit, an early warning information receiving unit and an early warning transmitting unit, wherein the early warning signal acquisition unit is connected with the early warning information receiving unit, and the early warning information receiving unit is connected with the early warning transmitting unit;
the constant value information management unit is respectively in communication connection with the constant value information acquisition unit, the diagnosis unit and the early warning unit, the constant value information acquisition unit is in communication connection with the diagnosis unit, and the diagnosis unit is in communication connection with the early warning unit.
2. The distribution network protection fixed value setting system based on the full information data flow according to claim 1, characterized in that: the PLC central processing unit is respectively connected with the fixed value data acquisition unit, the fixed value monitoring unit, the data diagnosis unit, the abnormal data judgment unit, the abnormal data statistic unit and the early warning threshold value setting unit; the constant value monitoring unit is further connected with the abnormal data counting unit, and the abnormal data judging unit is further connected with the early warning signal collecting unit.
3. The distribution network protection fixed value setting system based on the full information data flow according to claim 2, characterized in that: the database is used for storing basic data information, standard setting values and abnormal information; the constant value output unit is used for outputting data of real-time operation of a power grid and a protection constant value required by a distribution transformer, the constant value input unit is used for inputting the data of the real-time operation of the power grid of the constant value output unit and receiving the protection constant value required by the distribution transformer in real time, the constant value data acquisition unit is used for acquiring and receiving the final data of the real-time operation of the power grid and the protection constant value required by the distribution transformer, and the constant value monitoring unit is used for displaying basic data information, standard setting value and abnormal information of the power grid in real time;
the data diagnosis unit is used for analyzing and calculating the acquired final real-time running data of the power grid, carrying out primary diagnosis, diagnosing the re-screened abnormal fixed value data transmitted by the PLC central processing unit, judging whether the data is abnormal or not, screening the abnormal data and transmitting the abnormal data to the abnormal data judgment unit; the abnormal data judging unit is used for comparing the data judged to be abnormal by the data diagnosis unit with a threshold value set by the PLC central processing unit reading database, screening out the constant value data with abnormal comparison again, and transmitting the abnormal constant value data to the PLC central processing unit and the early warning signal acquisition unit; the abnormal data statistical unit is used for counting data with abnormal fixed values and transmitting the data with abnormal fixed values to the fixed value monitoring unit or the PLC central processing unit;
the early warning threshold setting unit is used for monitoring the comparison of fixed value data and diagnosing abnormal data according to the early warning threshold.
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