CN113570076B - On-line operation and maintenance management platform for gateway metering device of unified power plant - Google Patents
On-line operation and maintenance management platform for gateway metering device of unified power plant Download PDFInfo
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Abstract
The invention relates to an online operation and maintenance management platform of a gateway metering device of a unified power plant, which comprises a server terminal; the metering automation system platform and the operation and maintenance personnel communication terminal establish network connection through the server terminal, and the metering automation system platform can transmit basic information and parameter information of the gateway metering device of the power plant to the server terminal; the server terminal can analyze and calculate basic information and parameter information of the metering device through the functional module arranged in the server terminal to obtain primary and secondary meter electric quantity verification analysis data, primary and secondary meter point line loss analysis data, transformer state analysis data, additional electric quantity calculation data, transformer balance rate analysis data, plant power consumption analysis data and electric energy indication error test data for the metering automation system platform and the operation and maintenance personnel communication terminal to take and use.
Description
Technical Field
The invention relates to the technical field of power management, in particular to an online operation and maintenance management platform for a gateway metering device of a unified power plant.
Background
A large number of power plants on the internet are regulated in the power grid system to realize power generation, internet surfing and power consumption, internet surfing and internet surfing through the same power transmission line, and gateway metering points are arranged at title boundary points. When the power plant is powered off the network, the power load is small, the power transmission line is longer, and the like, the power consumption of the network is greatly different between the main metering point and the power consumption of the network accumulated by the opposite side checking metering point, the condition of multiple meters, fewer meters, missed meters and even no metering of the power consumption of the network exists objectively, and the installed power metering device is designed on the network according to the power plant, so that the metering misalignment problem is more prominent under the condition of small load, and the fairness of trade settlement are affected. The situation that the power plant consumes hundreds of thousands of kWh of electricity for one year leaks the meter exists, but the metering device is not abnormal, and the reason is mainly that objective factors such as transmission line distributed capacitance, metering device design selection and the like cause inaccurate metering of the power supply quantity of the power supply, and the similar phenomenon is also many in the system.
In order to excavate the loss caused by the missing meter and the missing meter of the power plant off-grid electricity under the potential unreasonable metering mode and increase the income, the invention provides an online operation and maintenance management platform of a power plant gateway metering device, and provides reasonable suggestions for the off-grid metering mode and the metering point setting of a new operation power plant, thereby fundamentally avoiding the phenomena of missing meter, missing meter and missing meter of the electricity caused by objective factors.
Disclosure of Invention
Aiming at the situations that the current power plant gateway metering device is inaccurate in metering, the main metering point and the opposite side checking metering point have larger difference in accumulated power supply quantity, and the situation that the power supply quantity is more, less, missed or even not metered is objectively existed, the invention provides the power plant gateway metering device on-line operation and maintenance management platform. The electric energy meter can realize the early detection, early warning and early solving of the abnormality of the electric energy meter, and ensure the electric power safety.
The invention adopts the technical scheme that:
the hardware of the on-line operation and maintenance management platform of the gateway metering device of the unified power plant comprises a server terminal; the metering automation system platform and the operation and maintenance personnel communication terminal establish network connection through the server terminal, and the metering automation system platform can transmit basic information and parameter information of the gateway metering device of the power plant to the server terminal; the server terminal can analyze and calculate basic information and parameter information of the metering device through the functional module arranged in the server terminal to obtain primary and secondary meter electric quantity verification analysis data, primary and secondary meter point line loss analysis data, transformer state analysis data, additional electric quantity calculation data, transformer balance rate analysis data and electric energy indication error test data for the metering automation system platform and the operation and maintenance personnel communication terminal to fetch and use.
Preferably, the server terminal comprises a computer main board, a CPU module, a memory bank, a solid state disk, a router and a power adapter; the server terminal comprises the following built-in functional modules: monitoring gateway metering points, namely a basic data module; the primary and secondary meter electric quantity verification module; a main and auxiliary metering point line loss analysis module; the transformer balance rate analysis module; and the electric energy indication error test module.
Preferably, the gateway metering point monitoring-basic data module directly invokes all data of the metering device database, and performs screening through input parameter quantification to obtain a data list meeting the parameter quantification;
wherein the parameter quantification is: and any one of metering point names, the areas, the power supply bureaus, the lines and the data time in the basic information and the parameter information of the power plant gateway metering device.
Preferably, the gateway metering point monitoring-basic data module can also form an electric quantity fluctuation map, a three-phase voltage map and an unbalance rate fluctuation map by inputting two parameter quantification;
wherein the parameter quantification is: and measuring the line and data time in the basic information and the parameter information of the device at the gateway of the power plant.
Preferably, the main and auxiliary metering point line loss analysis module quantitatively screens data in a metering device database according to parameters; calculating a main-auxiliary gateway electric quantity comparison monitoring value and a main-auxiliary gateway real-time power comparison monitoring value according to the main gateway electric quantity, the auxiliary gateway electric quantity, the main gateway power and the auxiliary gateway power; finally, according to the main-auxiliary gateway electric quantity comparison monitoring value and the main-auxiliary gateway real-time power comparison monitoring value, drawing a relation curve of the point line loss, the settlement electric quantity, the gateway electric quantity and the metering point load, identifying the negative line loss and the line loss crossing threshold value, generating a main-auxiliary metering point line loss alarm list, establishing a network through a server terminal, and sending the network to an operation and maintenance personnel communication terminal in a short message mode;
wherein the parameter quantification is: and any one of main metering point names, auxiliary metering point names, main metering point user names, auxiliary metering point user names and data time in the basic information and parameter information of the power plant gateway metering device, and a line loss threshold value.
Preferably, the transformer balance rate analysis module quantitatively screens data in a metering device database according to parameters; calculating the voltage unbalance rate and the current unbalance rate according to the wiring line voltage, the wiring line current, the three-phase voltage of the bus and the three-phase current of the bus; finally, the data for calculating the voltage unbalance rate and the current unbalance rate are screened again according to the voltage threshold value or the current threshold value, so that a balance rate analysis list is generated;
wherein the parameter quantification is: any one of metering point name, the region, the line and data time.
Preferably, the electric energy indication error test module firstly quantitatively screens data in a metering device database according to parameters; then, according to the screened data, carrying out electronic calculation through the electric energy of the current electronic display total electric energy counter, the electric energy of the counter corresponding to each rate period of the current electronic display, the rate number and the decimal number of the electronic display total electric energy counter; finally, generating an electric energy indication error test list;
wherein the parameter quantification is any one of metering point name, user name, data time, and decimal place.
Preferably, the hardware of the on-line operation and maintenance management platform of the gateway metering device of the unified power plant further comprises a handheld terminal, and the handheld terminal and the server terminal are connected in a network manner to realize information transmission; the handheld terminal consists of a handheld terminal complete shell, a handheld terminal special core board, a handheld terminal main board, an infrared laser module, a camera module, a two-dimensional scanning module, a power adapter and a data line; the handheld terminal complete set shell comprises TP, a liquid crystal display screen and auxiliary materials, wherein the liquid crystal display screen is a 5.5-inch high-definition screen, a special core board for the handheld terminal is a core board of 8 cores of 1.8GHZ, 2G RAM and 16G ROM, the main board of the handheld terminal comprises a 4G full-network communication module, a 2.4G/5G WiFi module and a Bluetooth 4.1 module, the infrared laser module is compatible with NFC, HF and RFID, and the camera module is an 800-ten-thousand high-definition camera; the two-dimensional scanning module supports one-dimensional code and two-dimensional code scanning.
Preferably, the server terminal is also provided with an alarm library module matched with the handheld terminal, the metering automation system platform and the operation and maintenance personnel communication terminal can log in the server terminal to enter the alarm library module, and the alarm library module can generate a terminal meter code shortage list, a voltage acquisition shortage list, a current acquisition shortage list, a meter code dump list, a meter code fly-away list, a voltage transformer abnormal list, a current phase interruption list and a voltage phase interruption list through screening and identification by inputting parameter quantification;
wherein the parameter quantification is: any one of metering point name, the line, measuring point type, deficiency type and data time.
The beneficial effects of the invention are as follows:
the on-line operation and maintenance management platform of the gateway metering device of the unified power plant is designed and displayed in a modularized mode according to functions, all unified power plants are displayed in a map mode, a tree-shaped query graph is built for each local city in a regional mode, and meanwhile, the direct query function of household numbers, power plant names and line names is supported. And automatically sending an alarm short message to related operation and maintenance staff for the platform with abnormal platform data parameters. The operation and maintenance personnel can download and automatically generate the on-line operation and maintenance analysis report of the gateway metering device by taking the power plant as a unit in the platform according to months, quarters, half a year and years.
Drawings
FIG. 1 is a block diagram of an on-line operation and maintenance management platform of a gateway metering device of a unified power plant;
FIG. 2 is a diagram of a power fluctuation map;
FIG. 3 is a three-phase voltage plot and imbalance ratio ripple plot;
FIG. 4 is a graph of primary and secondary power checks;
FIG. 5 is a graph showing the relationship between the time line loss and the settlement electricity, the gateway electricity, and the metering point load;
FIG. 6 is a graph of equilibrium rate analysis.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.
The invention relates to an online operation and maintenance management platform of a gateway metering device of a unified power plant, wherein the hardware of the online operation and maintenance management platform of the gateway metering device of the unified power plant comprises a server terminal; the metering automation system platform and the operation and maintenance personnel communication terminal establish network connection through the server terminal, and the metering automation system platform can transmit basic information and parameter information of the gateway metering device of the power plant to the server terminal; the server terminal can analyze and calculate basic information and parameter information of the metering device through the functional module arranged in the server terminal to obtain primary and secondary meter electric quantity verification analysis data, primary and secondary meter point line loss analysis data, transformer state analysis data, additional electric quantity calculation data, transformer balance rate analysis data, plant power consumption analysis data and electric energy indication error test data for the metering automation system platform and the operation and maintenance personnel communication terminal to take and use.
Hardware setting of the server terminal:
the server terminal comprises hardware such as a computer main board, a CPU module, a memory bank, a solid state disk, a router, a power adapter and the like. The computer main board is an H110T type computer x86 main board; the CPU module is of I7 7700 model; the memory bank is 8G DDR4 frequency 2133/2400; the solid state disk is a 512G M.2socket3 interface solid state disk; the router is a high-performance router with R7000P capable of being integrated with an X86 main board; the power adapter is a 220V input 19V output power adapter with output current > 6A.
The operating principle of the on-line operation and maintenance management platform of the gateway metering device of the unified power plant is as follows:
firstly, a metering automation system platform compiles manually recorded basic information and parameter information of a metering device into an Excel table, and then the Excel table is imported into a server terminal; then the server terminal gathers Excel form data imported by the metering automation system platform; forming a metering device database with the area, the power supply bureau, the line, a metering point name, a user name, a metering point type, a data time, an asset number and a metering point number; as shown in FIG. 1, since the gateway metering point monitoring-basic data module, the primary and secondary meter electric quantity verification module, the primary and secondary metering point line loss analysis module, the transformer balance rate analysis module, the station power consumption analysis module and the electric energy indication error test module are arranged in the server terminal; the modules can analyze, calculate and process the data in the metering device database to form basic data, primary and secondary meter electric quantity verification and analysis data, primary and secondary metering point line loss analysis data, transformer state analysis data and electric energy indication error test data, so that the metering automation system platform and the operation and maintenance personnel communication terminal can be used for calling and calling according to requirements.
The working principle of each module is as follows:
and (one) gateway metering point monitoring-basic data module:
the metering automation system platform and the operation and maintenance personnel communication terminal can log in the server terminal to enter a gateway metering point monitoring-basic data module, perform metering point standing book inquiry, metering point table code inquiry or metering point load inquiry, and quantify through input parameters: and (3) any one of the metering point name, the area, the power supply bureau, the line and the data time, the gateway metering point monitoring-basic data module directly calls all data of a metering device database, and screening is carried out through input parameter quantification to obtain a data list meeting the parameter quantification.
In addition, the gateway metering point monitoring-basic data module is used for summarizing data for a long time, and the quantitative analysis is carried out by inputting two parameters: the line and the data time can also form an electric quantity fluctuation diagram, a three-phase voltage diagram and an unbalance rate fluctuation diagram.
The electric quantity fluctuation diagram is shown in fig. 2, and a rectangular coordinate system is formed by recording time and using unit kilowatt-hour of electricity; the three-phase voltage diagram is shown in fig. 3, and a rectangular coordinate system is formed by recording time and voltage values; the unbalance rate fluctuation graph is shown in fig. 3, and a rectangular coordinate system is formed by recording time and unbalance rate percentage, wherein the calculation process of the unbalance rate percentage is as follows: percent unbalance = (any phase voltage-three phase voltage average)/three phase voltage average x 100%.
And (II) a primary and secondary meter electric quantity verification module:
the metering automation system platform and the operation and maintenance personnel communication terminal can log in the server terminal to enter the primary and secondary meter electric quantity verification module, and the metering automation system platform and the operation and maintenance personnel communication terminal quantify through input parameters: and the main and auxiliary meter electric quantity verification module can generate a main and auxiliary meter alarm list according to any one of the metering point name, the area, the power supply office, the line and the data time and the threshold value.
The process for generating the primary and secondary table alarm list comprises the following steps: the main and auxiliary meter electric quantity verification module firstly screens data in a metering device database according to any one of metering point names, the areas, the power supply bureau, the lines and data time, and then invokes numerical values of the main meter and the auxiliary meter in the screened data to carry out electric quantity fluctuation difference analysis, wherein the electric quantity fluctuation difference analysis can aim at output results caused by data acquisition failure, abnormality, mutation and the like. The calculation formula is as follows: "primary-secondary gateway electric quantity check" monitor value= (primary gateway electric quantity-secondary gateway electric quantity)/primary gateway electric quantity. Then generating a master meter and auxiliary meter electric quantity verification curve shown in figure 4 through a master-auxiliary gateway electric quantity verification monitoring value and recording time by a master-auxiliary meter electric quantity verification module; and giving an alarm list aiming at metering points of fluctuation of the main table and the auxiliary table exceeding a threshold value through electric quantity calibration curves of the main table and the auxiliary table, wherein the alarm list can be sent to an operation and maintenance personnel communication terminal in a short message mode through a network established by a server terminal. The threshold value can be set according to actual practice, the electric quantity fluctuation difference analysis of the main meter and the auxiliary meter needs to be analyzed according to the period of days, months, quarters and years, and the compared electric quantity is the electric quantity increment value in the same period (days, months, quarters and years), and the increment value can be multiplied by the comprehensive multiplying power of the transformer according to the settlement electric quantity.
In addition, the analysis process of the electric quantity verification module of the main meter and the auxiliary meter can also add electric energy meter field verification data, transformer test data, voltage transformer secondary loop voltage drop test data and laboratory first-check data; by adding the data, an optimized curve is formed after long-time comparison. Obtaining an error trend condition through optimizing a curve; and meanwhile, the metering influence caused by the capacitive current at low load can be analyzed.
And (III) a main and auxiliary metering point line loss analysis module:
the metering automation system platform and the operation and maintenance personnel communication terminal can log in the server terminal to enter the main and auxiliary metering point line loss analysis module, and the metering automation system platform and the operation and maintenance personnel communication terminal quantify through input parameters: the main and auxiliary metering point names, the main metering point user name, the auxiliary metering point user name, any one of data time and the line loss threshold value, and the main and auxiliary meter electric quantity checking module can generate a main and auxiliary metering point line loss alarm list.
The process for generating the main and auxiliary metering point line loss alarm list comprises the following steps: the main and auxiliary metering point line loss analysis module screens the data in the metering device database according to any one of the main metering point name, the auxiliary metering point user name and the data time. Then calculating a main-auxiliary gateway electric quantity comparison monitoring value according to the main gateway electric quantity, the auxiliary gateway electric quantity, the main gateway power and the auxiliary gateway power, and comparing the main-auxiliary gateway electric quantity with the main-auxiliary gateway real-time power comparison monitoring value; the calculation formula is as follows: main-auxiliary gate electric quantity comparison monitoring value= (main gate electric quantity-auxiliary gate electric quantity)/main gate electric quantity; main-auxiliary gate real-time power comparison monitor value= (main gate power-auxiliary gate power)/main gate power. Finally, according to the main-auxiliary gateway electric quantity comparison monitoring value and the main-auxiliary gateway real-time power comparison monitoring value, performing time point line loss calculation analysis, and drawing a relation curve of time point line loss, settlement electric quantity, gateway electric quantity and metering point load, wherein the relation curve is shown in fig. 5; and (3) giving a main and auxiliary metering point line loss alarm list through a curve relation diagram of the point line loss, the settlement electric quantity, the gateway electric quantity and the metering point load, wherein the threshold value of the 1-minus line loss and the threshold value of the 2-line loss of the station with abnormal line loss is exceeded, and the main and auxiliary metering point line loss alarm list can be sent to an operation and maintenance personnel communication terminal in a short message mode by establishing a network through a server terminal.
The line loss threshold value can be adjusted according to the actual situation, the line loss of a time period with average line loss or load approaching can be combined, the reasonable line loss level of the line is drawn, and the threshold value is made as a reference; the analysis can be carried out by combining with theoretical line loss, and a threshold value is established as a reference; the line loss calculation relation can be drawn according to the supply and output relation, and a threshold value is drawn as a reference.
And (IV) a transformer balance rate analysis module:
the metering automation system platform and the operation and maintenance personnel communication terminal can log in the server terminal to enter the transformer balance rate analysis module, and the metering automation system platform and the operation and maintenance personnel communication terminal quantify through input parameters: the balance rate analysis module of the transformer can generate a balance rate analysis list for analyzing various indexes of the balance rate of the transformer.
Wherein a balance rate analysis list is generatedThe process of (1) is as follows: the transformer balance rate analysis module firstly screens the data in the database of the metering device according to any one of the metering point name, the region, the line and the data time. Then calculating the voltage unbalance rate and the current unbalance rate according to the three-phase voltage and the three-phase current; the calculation formula is as follows: rate of voltage imbalance= (U x －(Ua+U b +U c )/3)/(U a +U b +U c ) 3; current imbalance ratio= (I X －(I a +I b +I c )/3)/(I a +I b +I c ) 3; wherein U is x To calculate the phase voltage, I x For the phase current to be calculated, U a 、U b 、U c Is three-phase voltage, I a 、I b 、I c Is a three-phase current. And finally, screening the data for calculating the voltage unbalance rate and the current unbalance rate again according to the voltage threshold value or the current threshold value, thereby generating a balance rate analysis list.
In addition, the transformer balance rate analysis module is subjected to long-time data summarization, and three parameters are input for quantification: the name of the metering point, the line to which the metering point belongs and the data time, the balance rate analysis module of the transformer can also form a balance rate analysis curve, and the balance rate analysis curve is shown in figure 6; the balance rate analysis curve forms a rectangular coordinate system by recording time and voltage unbalance rate and current unbalance rate. Quantification by input parameters: the transformer balance rate analysis module calculates the same ratio and ring ratio value between each phase voltage and current of the current phase bus, each phase voltage and current of the last phase bus and each phase voltage and current of the last year synchronous bus according to any one of the metering point name, the region, the line and the data time, and displays the values in a form of a table or a columnar graph.
And (V) an electric energy indication error test module:
the metering automation system platform and the operation and maintenance personnel communication terminal can log in the server terminal to enter the electric energy indication error test module, and the metering automation system platform and the operation and maintenance personnel communication terminal quantify through input parameters: the electric energy indication error test module can generate an electric energy indication error test list according to any one of the metering point name, the user name and the data time and the decimal place.
The process for generating the electric energy indication error test list comprises the following steps: the electric energy indication error test module firstly screens data in a metering device database according to any one of metering point names, user names and data time. Then, according to the screened data, carrying out electronic calculation through the electric energy of the current electronic display total electric energy counter, the electric energy of the counter corresponding to each rate period of the current electronic display, the rate number and the decimal number of the electronic display total electric energy counter; the calculation formula is as follows:
│W D -(W D1 +W D2 +…+W Dn │≤(n-1)×10 -β
wherein W is D The electric energy of the total electric energy counter of the current electronic display is W D1 ,W D2 ,…W Dn The method comprises the steps that the electric energy of a counter corresponding to each rate period of a current electronic display is calculated, n is the rate number, and beta is the decimal number of the electronic display total electric energy counter;
and finally, generating an electric energy indication error test list.
On the basis of the technical scheme, the hardware server terminal of the on-line operation and maintenance management platform of the gateway metering device of the unified power plant also comprises a handheld terminal, and the metering device can be read through the handheld terminal, so that basic information and parameter information of the metering device can be recorded instead of manpower to compile an Excel form; the handheld terminal establishes network connection with the server terminal to realize information transmission.
The handheld terminal comprises a handheld terminal complete shell, a handheld terminal special core board, a handheld terminal main board, an infrared laser module, a camera module, a two-dimensional scanning module, a power adapter and a data line. The handheld terminal complete set of shell contains TP, a liquid crystal display screen and auxiliary materials, the liquid crystal display screen is a 5.5-inch high-definition screen, and the visual angle and multi-point touch control can be realized; the special core board for the handheld terminal is a core board of 8 cores of 1.8GHZ, 2G RAM and 16G ROM; the handheld terminal main board comprises a 4G full-network communication module, a 2.4G/5G WiFi module and a Bluetooth 4.1 module; the infrared laser module is compatible with NFC, HF and RFID, accords with ISO14443A and ISO15693 standards, integrates power infrared protocol, accords with standards DL/T645-1997 and DL/T645-2007; the camera module is an 800 ten thousand high-definition camera; the two-dimensional scanning module supports one-dimensional code and two-dimensional code scanning.
The server terminal is also provided with an alarm library module matched with the handheld terminal, and the alarm library module gives an alarm list aiming at the conditions of terminal meter code shortage, voltage acquisition shortage, current acquisition shortage, meter code back-off, meter code flying-off, voltage transformer abnormality, current phase interruption, voltage phase interruption and the like. The metering automation system platform and the operation and maintenance personnel communication terminal can log in the server terminal to enter the alarm library module, and the metering automation system platform and the operation and maintenance personnel communication terminal quantify by input parameters: the alarm library module can generate any one of a terminal meter code shortage list, a voltage acquisition shortage list, a current acquisition shortage list, a meter code back-off list, a meter code flying list, a voltage transformer abnormal list, a current phase interruption list and a voltage phase interruption list.
The generation process comprises the following steps: the alarm library module screens the data in the database of the metering device according to any one of the metering point name, the line, the type of the measuring point, the type of the defect number and the data time.
The alarm library module calculates and screens data through the channel normally, but any one of the total 4 data items lacks in forward and reverse directions with the duration of 4 hours, so as to form a terminal table code deficiency list.
The alarm library module calculates ABC phase three-wire statistics AC phase according to the statistics of the successful and defect times of the voltage acquisition of ABC phase every day and the statistics of the ABC phase three-wire statistics AC phase of the three-phase four-wire ammeter, and the defect condition is that the voltage acquisition defect list is formed by judging that the voltage acquisition defect list is not acquired and null and 10000 default zero is the statistical time.
The alarm library module counts ABC phase three-wire statistics AC phase according to the current collection success rate and the defect times of the ABC phase every day and the three-phase four-wire ammeter, and judges that the defect condition is that the current collection success rate and the defect times are not collected and the defect conditions are null-10000; and the default zero point is the statistical time, so that a current acquisition shortage number list is formed.
The alarm library module judges the following conditions: any counter indicator of the last integral point of the electric energy meter is less than the indicator of the counter of the last integral point of the electric energy meter, so that a code back-off list is formed.
The alarm library module compares the reactive power of each whole point (such as 9 to 10 points) with the reactive power of the last whole point (such as 8 to 9 points) and identifies the name of the metering point with the power increased or decreased by more than 3 times, thereby forming a code flying list.
The alarm library module stores the maximum value and the minimum value after comparing the acquired voltage values, and identifies that the difference value between the maximum value and the minimum value of the in-phase voltage is larger than 0.5V, and the voltage transformer abnormality list is formed as long as one phase abnormality exists.
The alarm library module recognizes that the current of one phase or two phases is 0 by recognizing the current data of a certain point; the ABC phase or AC phase current is not zero, thus forming a current open-phase list.
The alarm library module recognizes that one or two phases of voltage phase is 0 by recognizing the voltage data of a certain point, so as to form a voltage open-phase list.
Claims (3)
1. An on-line operation and maintenance management platform for a gateway metering device of a unified power plant is characterized in that: the hardware of the on-line operation and maintenance management platform of the gateway metering device of the unified power plant comprises a server terminal; the metering automation system platform and the operation and maintenance personnel communication terminal establish network connection through the server terminal, and the metering automation system platform can transmit basic information and parameter information of the gateway metering device of the power plant to the server terminal;
the metering automation system platform compiles the manually recorded basic information and parameter information of the metering device into an Excel table, and then the Excel table is imported into the server terminal; then the server terminal gathers Excel form data imported by the metering automation system platform; forming a metering device database with an area, a power supply bureau, a line, a metering point name, a user name, a metering point type, a data time, an asset number and a metering point number;
the server terminal can analyze and calculate basic information and parameter information of the metering device through a functional module arranged in the server terminal to obtain primary and secondary meter electric quantity verification analysis data, primary and secondary metering point line loss analysis data, transformer state analysis data, additional electric quantity calculation data, transformer balance rate analysis data and electric energy indication error test data for the metering automation system platform and the operation and maintenance personnel communication terminal to fetch and use;
the server terminal comprises a computer main board, a CPU module, a memory bank, a solid state disk, a router and a power adapter; the server terminal comprises the following built-in functional modules: the gateway metering point monitoring-basic data module, the primary and secondary meter electric quantity verification module, the primary and secondary metering point line loss analysis module, the transformer balance rate analysis module and the electric energy indication error test module;
the gateway metering point monitoring-basic data module directly invokes all data of a metering device database, and performs screening through the input first parameter quantification to obtain a data list meeting the first parameter quantification;
wherein the first parameter is quantified as: any one of metering point names, the areas, the power supply bureaus, the lines and data time in basic information and parameter information of a power plant gateway metering device;
the gateway metering point monitoring-basic data module can also form an electric quantity fluctuation map, a three-phase voltage map and an unbalance rate fluctuation map by inputting two second parameter quantification;
wherein the second parameter is quantified as: the line and the data time in the basic information and the parameter information of the gateway metering device of the power plant;
the electric quantity fluctuation diagram forms a rectangular coordinate system by recording time and kilowatt-hour of electricity consumption; the three-phase voltage diagram forms a rectangular coordinate system by recording time and voltage values; the unbalance rate fluctuation graph forms a rectangular coordinate system by recording time and unbalance rate percentage, wherein the calculation process of the unbalance rate percentage is as follows: percent imbalance = (any phase voltage-three phase voltage average)/three phase voltage average 100%;
the primary and secondary meter electric quantity verification module quantitatively screens data in a metering device database according to a third parameter; then, the values of the main table and the auxiliary table are called in the screened data to carry out electric quantity fluctuation difference analysis; then generating a master meter and auxiliary meter electric quantity verification curve through a master-auxiliary gateway electric quantity verification monitoring value and recording time by a master-auxiliary meter electric quantity verification module; giving an alarm list aiming at metering points of which the fluctuation of the main table and the auxiliary table exceeds a threshold value through the electric quantity calibration curves of the main table and the auxiliary table, and sending the alarm list to an operation and maintenance personnel communication terminal in a short message mode through a network established by a server terminal;
wherein the third parameter is quantified as: any one of metering point names, the areas, the power supply bureaus, the lines and data time in basic information and parameter information of a power plant gateway metering device;
the calculation formula is as follows: "primary-secondary gateway electric quantity check" monitor value= (primary gateway electric quantity-secondary gateway electric quantity)/primary gateway electric quantity;
the threshold value is set according to actual practice, the electric quantity fluctuation difference analysis of the main meter and the auxiliary meter needs to be analyzed according to the period of days, months, quarters or years, the compared electric quantity is an electric quantity increment value in the same period, and the increment value is equal to the settlement electric quantity multiplied by the comprehensive multiplying power of the transformer;
in addition, the analysis process of the electric quantity verification module of the main meter and the auxiliary meter is added with the on-site test data of the electric energy meter, the test data of the mutual inductor, the test data of the voltage drop of the secondary circuit of the voltage transformer and the first-time test data of the laboratory, and an optimized curve is formed through long-time comparison; obtaining an error trend condition through optimizing a curve; meanwhile, the metering influence caused by the capacitive current at the time of low load can be analyzed;
the main and auxiliary metering point line loss analysis module quantitatively screens data in a metering device database according to a fourth parameter; calculating a main-auxiliary gateway electric quantity comparison monitoring value and a main-auxiliary gateway real-time power comparison monitoring value according to the main gateway electric quantity, the auxiliary gateway electric quantity, the main gateway power and the auxiliary gateway power; finally, according to the main-auxiliary gateway electric quantity comparison monitoring value and the main-auxiliary gateway real-time power comparison monitoring value, drawing a relation curve of the time point line loss and the settlement electric quantity, the gateway electric quantity and the metering point load, identifying the negative line loss and the line loss crossing threshold value, generating a main-auxiliary metering point line loss alarm list, establishing a network through a server terminal, and sending the network to an operation and maintenance personnel communication terminal in a short message mode;
wherein the fourth parameter is quantified as: any one of a main metering point name, an auxiliary metering point user name and data time in basic information and parameter information of a power plant gateway metering device, and a line loss threshold value;
the calculation formula is as follows: main-auxiliary gate electric quantity comparison monitoring value= (main gate electric quantity-auxiliary gate electric quantity)/main gate electric quantity; main-auxiliary gateway real-time power comparison monitor value= (main gateway power-auxiliary gateway power)/main gateway power;
the line loss threshold value is adjusted according to the actual situation, and the reasonable line loss level of the line is drawn by combining the annual average line loss or the line loss of the period of time with the load approaching, and the threshold value is made as a reference; or analyzing by combining with theoretical line loss, and making a threshold value as a reference; or according to the supply and output relation, drawing up a line loss calculation relation, and drawing up a threshold value as a reference;
the transformer balance rate analysis module quantitatively screens data in a metering device database according to a fifth parameter; calculating the voltage unbalance rate and the current unbalance rate according to the wiring line voltage, the wiring line current, the three-phase voltage of the bus and the three-phase current of the bus; finally, the data for calculating the voltage unbalance rate and the current unbalance rate are screened again according to the voltage threshold value or the current threshold value, so that a balance rate analysis list is generated;
wherein the fifth parameter is quantified as: any one of metering point name, the area, the line and data time;
the calculation formula is as follows: voltage unbalance rate= (Ux- (ua+ub+uc)/3)/(ua+ub+uc)/3; current imbalance ratio= (Ix- (ia+ib+ic)/3)/(ia+ib+ic)/3; wherein Ux is the phase voltage to be calculated, ix is the phase current to be calculated, ua, ub and Uc are three-phase voltages, and Ia, ib and Ic are three-phase currents;
the transformer balance rate analysis module is subjected to long-time data summarization, and three sixth parameters are input for quantification: the name of the metering point, the line to which the metering point belongs and the data time, and the balance rate analysis module of the transformer can also form a balance rate analysis curve; the balance rate analysis curve forms a rectangular coordinate system by recording time and voltage unbalance rate and current unbalance rate; quantification by inputting a sixth parameter: calculating the same ratio and the numerical value of the ring ratio among the voltage and the current of each phase of the current phase bus, the voltage and the current of each phase of the last phase bus and the voltage and the current of each phase of the last year synchronous bus by the transformer balance rate analysis module according to any one of the name of the metering point, the area, the circuit and the data time, and displaying the values in a form of a table or a columnar graph;
the electric energy indication error test module quantitatively screens data in a metering device database according to a seventh parameter; then, according to the screened data, carrying out electronic calculation through the electric energy of the current electronic display total electric energy counter, the electric energy of the counter corresponding to each rate period of the current electronic display, the rate number and the decimal number of the electronic display total electric energy counter; finally, generating an electric energy indication error test list;
the seventh parameter is quantitatively any one of a metering point name, a user name and data time, and the decimal of the total electric energy counter of the electronic display;
the electric energy indication error test list is calculated as follows: w is% D -(W D1 +W D2 +…+W Dn )|≤(n-1)×10 -ß ；
Wherein the method comprises the steps ofThe power of the total power counter for the current electronic display, +.>And (3) the electric energy of the counter corresponding to each rate period of the current electronic display is calculated, n is the rate number, and beta is the decimal number of the total electric energy counter of the electronic display.
2. The on-line operation and maintenance management platform for the gateway metering device of the unified power plant according to claim 1, wherein the on-line operation and maintenance management platform is characterized in that: the hardware of the gateway metering device of the unified power plant on-line operation and maintenance management platform comprises a handheld terminal, wherein the handheld terminal and the server terminal are connected in a network manner, so that information transmission is realized; the handheld terminal consists of a handheld terminal complete shell, a handheld terminal special core board, a handheld terminal main board, an infrared laser module, a camera module, a two-dimensional scanning module, a power adapter and a data line; the handheld terminal complete set shell comprises TP, a liquid crystal display screen and auxiliary materials, wherein the liquid crystal display screen is a 5.5-inch high-definition screen, a special core board for the handheld terminal is a core board of 8 cores of 1.8GHZ, 2G RAM and 16G ROM, the main board of the handheld terminal comprises a 4G full-network communication module, a 2.4G/5G WiFi module and a Bluetooth 4.1 module, the infrared laser module is compatible with NFC, HF and RFID, and the camera module is an 800-ten-thousand high-definition camera; the two-dimensional scanning module supports one-dimensional code and two-dimensional code scanning.
3. The on-line operation and maintenance management platform for the gateway metering device of the unified power plant according to claim 1, wherein the on-line operation and maintenance management platform is characterized in that: the server terminal is also provided with an alarm library module matched with the handheld terminal, the metering automation system platform and the operation and maintenance personnel communication terminal log in the server terminal to enter the alarm library module, and the alarm library module generates a terminal meter code shortage list, a voltage acquisition shortage list, a current acquisition shortage list, a meter code back-off list, a meter code flying-off list, a voltage transformer abnormal list, a current phase interruption list and a voltage phase interruption list after screening and identification by inputting eighth parameter quantification;
wherein the eighth parameter is quantified as: any one of metering point name, the line, measuring point type, deficiency type, and data time.
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