CN106169160A - A kind of electricity abnormity diagnosis based on critical point power system and electricity complementing method - Google Patents

Abstract

The invention discloses a kind of electricity abnormity diagnosis based on critical point power system and electricity complementing method, set up the storage table of each item data in data base, each table corresponding relation can reflect the logical relation of electric network composition, carries out correspondence by field；Set up clear concept, meet reality data structure after can carry out between each item data based on this logical judgment；The present invention can be effectively improved the collection quality of data, promotes data availability rate, Network Loss Rate, purchases supply and distribution, female flat, loss on transmission, circuit line loss, the multiple data availability rate such as electricity consumption of stand, makes system play bigger effect in the raising efficiency of management and effectiveness of operation.

Description

A power anomaly diagnosis and power complement method based on a gateway power system

technical field

The technical field of power data monitoring of the present invention relates to a power abnormality diagnosis and power supplement method based on a gateway power system.

Background technique

The gateway system provides a platform for the calculation, monitoring and management of various gateway power index data, and realizes the statistics and analysis of various data such as network loss rate, purchase, supply and sale of electricity, bus level, variable loss, line line loss, and station power consumption. And real-time online monitoring of field equipment can provide a data basis and analysis means for optimizing the power grid structure and improving the lean management level of line loss. However, in the current application process of the gateway system, due to problems such as collection failure, table change, and base code mutation, some of the gateway data are abnormal, which affects the data quality and further deepens the application.

Contents of the invention

The technical problem to be solved by the present invention is to provide a power abnormality diagnosis and power supplement method based on the gateway power system, which can automatically complete the abnormal type and realize the automatic completion of power data.

The technical solution adopted to solve the above-mentioned technical problems is: a power abnormality diagnosis and power supply method based on the gateway power system. Diagnose power abnormality according to the logical relationship, and perform automatic power completion according to the abnormal type, so as to realize automatic power data completion; set up a storage table for various data in the database;

(1) If the bottom code data is 0 or the abnormal collection of empty values occurs, the abnormal data will be eliminated and replaced with normal data within three days;

(2) If the positive and stop code is less than the positive and negative minimum or the negative and negative minimum is less than the negative minimum and the positive and positive stop is greater than the negative minimum or the reverse and negative minimum is greater than the positive and negative power interaction, exchange the minimum positive and negative Recalculate after bottom code;

(3) Count the end-of-month and the end-of-month code values. When the positive and negative end-of-month code values are smaller than the beginning-of-month code values, it is determined to change the meter to prevent abnormal power. Calculate according to the following formula to complete the power supply;

Electricity of the current month = (maximum value in the middle of the month - code value at the end of the month + code value at the end of the month - minimum value in the middle of the month) * magnification

(4) When (the end of this month's code value - this month's bottom code value)>3*(the last month's end code value-the previous month's code value) and (the current month's end code value-the current month's code value)>3 *(Base code value at the end of the previous 2 months-Base code value at the beginning of the previous February), it is determined that the bottom code has changed suddenly, and the normal data within three days is used to replace it.

The beneficial effects of the present invention are: the present invention can effectively improve the quality of collected data, improve data availability, network loss rate, purchase, supply and sale of electricity, bus level, variable loss, line line loss, station power consumption and other data availability, Make the system play a greater role in improving management efficiency and operating benefits.

Description of drawings

Figure 1 shows the data structure of the gateway system and the relationship between the collection elements.

FIG. 2 is a flow chart of a method for diagnosing abnormal electricity and replenishing electricity.

detailed description

The present invention will be further described below according to accompanying drawings 1-2 and embodiments.

The method of the present invention is as follows: according to the logical relationship between the power data of the gateway power system and the grid structure, the current flow, and the historical power, the power abnormality diagnosis is performed, and the automatic power completion is performed according to the abnormal type, so as to realize the automatic completion of the power data; in the database The storage table of various data is built in the internal;

(1) If the bottom code data is 0 or the abnormal collection of empty values occurs, the abnormal data will be eliminated and replaced with normal data within three days;

(2) If the positive and stop code is less than the positive and negative minimum or the negative and negative minimum is less than the negative minimum and the positive and positive stop is greater than the negative minimum or the reverse and negative minimum is greater than the positive and negative power interaction, exchange the minimum positive and negative Recalculate after bottom code;

(3) Count the end-of-month and the end-of-month code values. When the positive and negative end-of-month code values are smaller than the beginning-of-month code values, it is determined to change the meter to prevent abnormal power. Calculate according to the following formula to complete the power supply;

Electricity of the current month = (maximum value in the middle of the month - code value at the end of the month + code value at the end of the month - minimum value in the middle of the month) * magnification

(4) When (the end of this month's code value - this month's bottom code value)>3*(the last month's end code value-the previous month's code value) and (the current month's end code value-the current month's code value)>3 *(Base code value at the end of the previous 2 months-Base code value at the beginning of the previous February), it is determined that the bottom code has changed suddenly, and the normal data within three days is used to replace it.

The present invention is based on the gateway electric quantity system, by analyzing the logical relationship between the electric quantity data of the system and the grid structure, the current flow, and the historical electric quantity, the electric quantity abnormality diagnosis is carried out, and the electric quantity is automatically supplemented according to the abnormal type, so as to realize the automatic completion of the electric quantity data. As shown in Figure 1.

The storage tables of various data are set up in the database, and the corresponding relationship between each table can reflect the logical relationship of the power grid structure, and the fields shown in the figure are used for correspondence (the fields in the figure are all fields of the lower-level table, corresponding to the primary key of the upper-level table, For example, in the DEV_ID field of the ammeter table, part of the data corresponds to the tw_id field data of the winding table, and the other part of the data corresponds to the acln_dot_id field data of the line end table). After establishing a data structure with a clear concept and in line with reality, it can be used as a basis for logical judgments between various data.

A gateway system meter basically has four items of data: forward active power, reverse active power, forward reactive power, and reverse reactive power. Forward and reverse active power are commonly used for calculation. All power flows flowing out of the bus are forward active power, and all power flows flowing into the bus are reverse active power. All power flows flowing into the main transformer are positive active power, and all power flows flowing out of the main transformer are reverse active power. For example, the positive active power measured by the high-voltage side meter of the main transformer is the flow flowing out from the busbar and also the flow flowing into the main transformer. If the power flow direction reflected by the power value is opposite to the actual power flow direction, it is considered that the power is abnormal.

1. The collection fails. If the bottom code data is 0 or the abnormal collection of empty values occurs, the abnormal data will be removed and replaced with normal data within three days

2. Positive and negative power setting, when (the positive and negative limit code is less than the positive and negative minimum value or the reverse and negative limit is less than the negative minimum) and (the positive and negative limit is greater than the negative minimum or the negative limit is greater than the positive and negative minimum) to determine positive Negative power interaction, recalculate after exchanging at least positive and negative bottom codes.

3. Change the meter, count the end-of-month and beginning-of-month code values, and determine to change the meter when the forward and reverse month-end code values are less than the beginning-of-month code value, to prevent abnormal power, calculate according to the following formula, and complete the power supply.

Electricity of the current month = (maximum value in the middle of the month - code value at the end of the month + code value at the end of the month - minimum value in the middle of the month) * magnification

4. The bottom code changes, when (the bottom code value at the end of this month-the bottom code value at the beginning of this month)>3*(the bottom code value at the end of last month-the bottom code value at the beginning of last month) and (the bottom code value at the end of this month-the bottom code value at the beginning of this month )>3*(the bottom code value at the end of the previous February - the bottom code value at the beginning of the previous February) to determine the mutation of the bottom code, use the normal data within three days to replace it.

The implementation manners described above are only preferred embodiments of the present invention, rather than an exhaustive list of feasible embodiments of the present invention. For those skilled in the art, any obvious changes made without departing from the principle and spirit of the present invention should be considered to be included in the protection scope of the claims of the present invention.

Claims (1)

1. an electricity abnormity diagnosis based on critical point power system and electricity complementing method, it is characterised in that method is as follows: root Electricity is carried out different according to the logical relation between electric quantity data and electric network composition, current, the history electricity of critical point power system Often diagnosis, carries out automatic electricity quantity completion according to Exception Type, it is achieved the auto-complete of electric quantity data；Set up each in data base The storage table of item data；

(1) as occurred, ins and outs data are 0 or null value acquisition abnormity situation, by this rejecting abnormal data, and normal with within three days Data substitute；

(2) if just having only code less than just having at least or counter have only code less than counter have at least and just having only code more than counter have minimum or Counter have only code minimum more than just having, it is determined that positive and negative electricity is mutual, recalculates after exchanging minimum positive and negative ins and outs；

(3) the statistics the end of month and ins and outs value at the beginning of the month, when appearance ins and outs value at forward and reverse the end of month is judged to less than the situation of ins and outs value at the beginning of the month Change table, prevent abnormal electricity, calculate by formula below, carry out electricity completion；

Of that month electricity=(middle of the month maximum-beginning of the month ins and outs value+the end of month ins and outs value-middle of the month minima) * multiplying power；

(4) when

(this end of month ins and outs value-earlier this month ins and outs value) > 3*(ins and outs the end of last month value-beginning of last month ins and outs value)

And (this end of month ins and outs value-earlier this month ins and outs value) > before 3*(2 the end of month ins and outs value-ins and outs value at the beginning of first 2 months) time,

Judging ins and outs sudden change, the normal data within using three days substitutes.