CN110995320B - Three-phase electricity consumption data acquisition method based on broadband carrier communication - Google Patents
Three-phase electricity consumption data acquisition method based on broadband carrier communication Download PDFInfo
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Abstract
The invention relates to a three-phase electricity consumption data acquisition method based on broadband carrier communication, which comprises the steps of networking an intelligent electric energy meter, a concentrator and a master station through a broadband communication module to form a local communication network; the broadband routing module inquires collection tasks including events and state data; executing collection tasks, including round reading and active reporting; the storage unit records and stores state data and events; the concentrator collects data and uploads the data to the master station. The invention can be widely applied to the electricity utilization information acquisition system, is used for improving the electricity utilization acquisition local communication quality, improving the data transmission communication rate and the communication reliability of low-voltage users, and meeting the increasing requirements of real-time and interactive services.
Description
Technical Field
The invention relates to a three-phase electricity consumption data acquisition method based on broadband carrier communication.
Background
Power Line Communication (PLC) is a Communication method for transmitting data by using a power line. It loads the baseband signal carrying the effective information onto the power line, and uses the power line to make data transmission, and uses the special power line modem to separate the baseband signal from the power line and transfer it to the terminal equipment. The novel broadband PLC communication technology can utilize power lines throughout various places as transmission media to carry the transmission of voice, data and images. Based on the fact that the power line is the network with the strongest ergodicity, the coverage range and the density which cannot be reached by any other network can be achieved. With the continuous improvement of the intelligent level of a power grid, the outstanding requirements on the lean management and the proposal of the general planning of the power internet of things, the requirements of the power utilization information acquisition field on real-time and interactive services are stronger, and further more severe requirements on the aspects of the acquisition communication speed, the stability and the deep application of functions are provided.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a three-phase power consumption data acquisition method based on broadband carrier communication, which can effectively support the urgent need of ubiquitous power internet of things for power consumption information acquisition communication, improve the local communication quality of a power consumption information acquisition system, ensure the transmission stability of power consumption information data, support the deep application of large power consumption information data and promote the traditional power consumption information acquisition business to expand to a novel business.
The technical scheme adopted by the invention is as follows: a three-phase electricity consumption data acquisition method based on broadband carrier communication comprises the following steps:
s1: networking the intelligent electric energy meter, the concentrator and the master station through the broadband communication module to form a local communication network;
s2: the broadband routing module inquires collection tasks including events and state data;
s3: executing collection tasks, including round reading and active reporting;
s4: the storage unit records and stores state data and events;
s4: the concentrator collects data and uploads the data to the master station.
Further, in S2, the status data collection includes data collection of voltage, current, electric quantity, active power and power parameters.
Further, in S2, the status data collection process includes:
initializing a metering IC;
waking up a data acquisition task;
acquiring/converting metering data;
and the task is suspended.
Further, in S2, the specific method for collecting the event data includes
System parameter recovery/initialization;
initializing a metering IC;
initializing the state of the equipment;
waking up a data acquisition task;
acquiring/converting metering data;
judging whether the current of the intelligent electric energy meter is larger than zero and in a shutdown state, if so, changing the state into a startup state, and storing an event; if not, continuously judging whether the current is greater than the working current threshold value and the state is in a starting state, if so, changing the state into the working start, and storing the event; if not, continuously judging whether the current is smaller than a working current threshold value and the state is in a working starting state, if so, changing the state to be working ending and storing the event, if not, continuously judging whether the equipment is powered off, if so, changing the state to be shutdown and storing the event, and if not, suspending the task and returning to the state before the awakening data acquisition task again.
Further, in S4, the method includes storing the metering data, the load recording data, and the event recording data.
Further, in S4, the status data is stored at 15-minute intervals, the current status data is stored, and the status data is written from the initial position of the memory half a year later in the loop recording method.
Further, the state data storage process includes:
waking up a data storage task;
judging whether the state data storage area is full, if so, erasing a longer data sector, then writing data, and finally suspending the task; if not, searching the available sector flash, erasing the sector, writing data, and finally suspending the task.
Further, the event storage adopts a circular recording mode, the event storage is carried out when the event occurs, and the event is written from the initial position of the storage after half a year or the storage space is full.
Further, the specific method for storing the event is as follows:
a ring data storage task;
judging whether the storage area is full, if so, erasing a longer data sector, then writing data, and finally suspending the task;
if the judgment is not full, continuously judging whether the half year is full, if the half year is full, erasing a longer data sector, then writing data, and finally suspending the task; if the year is less than half a year, searching the available sector flash, erasing the sector, writing data and finally suspending the task.
The utility model provides a three-phase power consumption data acquisition device based on broadband carrier communication, it includes central processing unit, single-phase broadband carrier communication unit, three-phase measurement unit, data memory cell and RS-485 communication unit, well central processing unit is used for equipment operation and data processing work, carrier communication unit is used for broadband carrier STA and routing equipment broadband carrier CCO module communication, measurement unit is used for data measurement and collection, data memory cell is responsible for the storage of data such as measurement data, load record data, incident record data, RS-485 communication module can realize central processing unit and the peripheral equipment communication that possesses the RS-485 interface.
The invention has the positive effects that:
1. obvious economic benefit
The invention can be widely applied to the electricity utilization information acquisition system, is used for improving the electricity utilization acquisition local communication quality, improving the data transmission communication rate and the communication reliability of low-voltage users, and meeting the increasing requirements of real-time and interactive services. The three-phase power consumption data acquisition function is integrated in the intelligent electric energy meter carrier communication module, and the characteristics of high efficiency and stability of broadband carriers are utilized, so that the equipment investment cost is saved, the capital investment of a company in the construction of an acquisition system architecture is reduced, and the field operation and maintenance workload caused by the communication quality problem is reduced.
2. The risk controllability is high
The PLC broadband carrier acquisition equipment has a unified standard interconnection technical protocol, and the function implementation is convenient and reliable; the deepening application of the business can meet the theoretical requirement only by performing relevant function expansion on an object-oriented communication protocol and an 1376.2 acquisition terminal local communication module interface protocol and adding a corresponding data item acquisition strategy to an acquisition master station; the software and hardware design technology has clear routes, lower technical risk and higher feasibility, and is convenient for large-scale popularization.
Drawings
FIG. 1 is a flow chart of the status data acquisition of the present invention;
FIG. 2 is a flow chart of event data collection according to the present invention;
FIG. 3 is a flow chart of the state data storage of the present invention;
FIG. 4 is a flow chart of event data storage according to the present invention;
FIG. 5 is a flow chart of the data interaction function of the present invention;
FIG. 6 is a flow chart of the software design of the present invention;
FIG. 7 is a schematic block diagram of the apparatus of the present invention;
fig. 8 is a working principle diagram of the present invention.
Detailed Description
The PLC broadband carrier collection equipment integrates the single-phase broadband carrier communication module, the three-phase metering module and the RS-485 communication into a whole, and the collection and storage of the power consumption and the working state of the three-phase power utilization assets are realized. The PLC processing unit is used for measuring parameters such as working voltage, current, electric quantity, active power, power factor and running time of the electric equipment, the collection of three-phase electric data of a low-voltage user is achieved, meanwhile, the PLC processing unit has power line communication and networking functions, the data are uploaded through a power line after measured data are coded into frames, and the working principle is as shown in an attached figure 8.
The system has the following basic functions: power line communication and networking functions; the metering function of the electric equipment comprises parameters such as voltage, current, electric quantity active power, power factor and the like, the voltage range is 3 multiplied by 220/380V, and the current is 630A at maximum; a network access reporting function; an event recording function, a load data recording function and a real-time data recording function; the offline storage function can store half-year working parameter information of the electric equipment when no power line communication network exists, wherein the working parameter information comprises metering data, event recording data and load recording data, and the stored offline information is uploaded to the software platform when the electric equipment is added into the power line communication network; a function of setting a device ID; automatic rapid networking, automatic relaying and maximum 10-level relaying are supported; uploading corresponding data to the routing equipment according to the command of the routing equipment; the functions of the working current threshold and the standby current threshold are rewritten, and the thresholds of the two currents can be rewritten by issuing commands through a software platform.
As shown in fig. 7 and 8, the three-phase power consumption data acquisition device based on broadband carrier communication comprises a central processing unit, a single-phase broadband carrier communication unit, a three-phase metering unit, a data storage unit and an RS-485 communication unit, wherein the central processing unit is used for equipment operation and data processing, the carrier communication unit is used for communication between a broadband carrier STA and a broadband carrier CCO module of a routing device, the metering unit is used for data measurement and acquisition, the data storage unit is used for storing data such as metering data, load recording data and event recording data, and the RS-485 communication module can realize communication between the central processing unit and external equipment with an RS-485 interface.
A three-phase electricity consumption data acquisition method based on broadband carrier communication comprises the following steps:
s1: networking the intelligent electric energy meter, the concentrator and the master station through the broadband communication module to form a local communication network;
s2: the broadband routing module inquires collection tasks including events and state data;
s3: executing collection tasks, including round reading and active reporting;
s4: the storage unit records and stores state data and events;
s4: the concentrator collects data and uploads the data to the master station.
At S2, the status data collection includes data collection of voltage, current, electric quantity, active power and power parameters, as shown in fig. 1, the status data collection process includes:
initializing a metering IC;
waking up a data acquisition task;
acquiring/converting metering data;
and the task is suspended.
As shown in fig. 2, the specific method of event data collection includes:
system parameter recovery/initialization;
initializing a metering IC;
initializing the state of the equipment;
waking up a data acquisition task;
acquiring/converting metering data;
judging whether the current of the intelligent electric energy meter is larger than zero and in a shutdown state, if so, changing the state into a startup state, and storing an event; if not, continuously judging whether the current is greater than the working current threshold value and the state is in a starting state, if so, changing the state into the working start, and storing the event; if not, continuously judging whether the current is smaller than a working current threshold value and the state is in a working starting state, if so, changing the state to be working ending and storing the event, if not, continuously judging whether the equipment is powered off, if so, changing the state to be shutdown and storing the event, and if not, suspending the task and returning to the state before the awakening data acquisition task again.
The data storage function in S4 includes storage of metering data, load recording data, event recording data.
Status data storage
The system stores the current status data at 15 minute intervals. Event record data of half a year can be stored, a cyclic recording mode is adopted, and after half a year, the event record data is written from the initial position of the memory; event records for any day can be uploaded on command. After the status data is recalled, the record with the relevant size is erased, and the specific flow is shown in fig. 3.
The specific state data storage process comprises the following steps:
waking up a data storage task;
judging whether the state data storage area is full, if so, erasing a longer data sector, then writing data, and finally suspending the task; if not, searching the available sector flash, erasing the sector, writing data, and finally suspending the task.
Event data storage
And storing the time point of the change of the working state of the equipment.
The data is stored in a cyclic recording mode. When the event occurs, storing; writing from the initial position of the memory after half a year or the memory space is full; event records on any day can be recalled on command.
The event storage adopts a circular recording mode, when an event occurs, the event is stored, and after the event is written in a half year or a storage space, the event is written in from the initial position of a memory, the specific flow is as shown in figure 4, and the specific method of the event storage is as follows:
a ring data storage task;
judging whether the storage area is full, if so, erasing a longer data sector, then writing data, and finally suspending the task;
if the judgment is not full, continuously judging whether the half year is full, if the half year is full, erasing a longer data sector, then writing data, and finally suspending the task; if the year is less than half a year, searching the available sector flash, erasing the sector, writing data and finally suspending the task.
Data interaction functionality
Having a function of setting a device ID; uploading corresponding data to the routing equipment according to the command of the routing equipment; the method has the functions of rewriting the working current threshold and the standby current threshold, the thresholds of the two currents can be rewritten by issuing commands through a software platform, the flow is as shown in figure 5, firstly, a data exchange task is awakened, a received message is analyzed, then, data filling/execution actions are carried out, then, the message is responded, and finally, the task is suspended.
The invention also discloses a part related to software design, as shown in figure 6.
After power-on, system parameter recovery, external IC initialization and query tasks comprise: the carrier module initiates interactive data, metering, collecting and calculating tasks, storing tasks and the like; and circularly inquiring the task queue in the main program, and expanding and executing related tasks when the task queue has effective tasks.
a. Carrier communication task
And data interaction tasks between the adapter and the carrier module, such as address search after power-on, uploading corresponding data to the routing equipment according to a command of the routing equipment, and rewriting functions of a working current threshold value and a standby current threshold value.
b. Metering tasks
The training is carried out in turn to collect measurement data, and the period is 500 milliseconds; if the timing time is up, submitting the task to the main queue; the task generates data such as voltage, current, electric quantity, active power, power factor and the like, and is convenient for acquiring task related data such as carrier waves and the like.
c. Storing tasks
When an event occurs, adding a task to a main queue to store the event; the system software flow is shown in fig. 7.
The invention integrates the single-phase broadband carrier communication module, the three-phase metering module and the RS-485 communication into a whole by utilizing the PLC broadband carrier collection equipment, thereby realizing the collection and storage of the power consumption and the working state of the three-phase power utilization assets.
The PLC processing unit is used for measuring parameters such as working voltage, current, electric quantity, active power, power factor and running time of the electric equipment, the collection of three-phase electricity utilization data of a low-voltage user is achieved, meanwhile, the PLC processing unit has power line communication and networking functions, and the data are uploaded through a power line after the measured data are framed.
The method has the basic functions of power line communication and networking, electric equipment metering, event recording, load data recording, real-time data recording, offline storage and offline information reporting, equipment ID setting, automatic and rapid networking, data uploading according to a routing equipment command, rewriting of a working current threshold value and a standby current threshold value and the like.
The acquisition equipment is internally provided with a metering unit consisting of a high-precision three-phase metering chip ATT7022E, and has the advantages of accurate metering, stable performance and good cost performance; the carrier communication adopts a modular design, and the chip adopts a high-efficiency broadband carrier chip to realize the communication between the broadband carrier STA and the broadband carrier CCO module of the routing equipment.
The method comprises the following steps of system software design, system parameter recovery after electrification, external IC initialization and query tasks, wherein the system parameter recovery comprises the following steps: the carrier module initiates interactive data, metering, collecting and calculating tasks, storing tasks and the like; and circularly inquiring the task queue in the main program, and expanding and executing related tasks when the task queue has effective tasks. The method comprises the following steps: carrier tasks, metering tasks, storage tasks, etc.
The system hardware design, PLC broadband carrier acquisition equipment hardware constitutes mainly by parts such as central processing unit, single-phase broadband carrier communication unit, three-phase measurement unit, data memory cell, RS-485 communication unit. The central processing unit is responsible for operation, data processing and other work of equipment, the carrier communication unit is responsible for communication between the broadband carrier STA and the broadband carrier CCO module of the routing equipment, the metering unit is responsible for data measurement and collection, the data storage unit is responsible for storage of metering data, load recording data, event recording data and other data, and the RS-485 communication module can realize communication between the central processing unit and external equipment with an RS-485 interface.
Claims (8)
1. A three-phase electricity consumption data acquisition method based on broadband carrier communication is characterized by comprising the following steps:
s1: networking the intelligent electric energy meter, the concentrator and the master station through the broadband communication module to form a local communication network;
s2: the broadband routing module inquires collection tasks including events and state data;
the specific method for acquiring the event data comprises the following steps:
system parameter recovery/initialization;
initializing a metering IC;
initializing the state of the equipment;
waking up a data acquisition task;
acquiring/converting metering data;
judging whether the current of the intelligent electric energy meter is larger than zero and in a shutdown state, if so, changing the state into a startup state, and storing an event; if not, continuously judging whether the current is greater than the working current threshold value and the state is in a starting state, if so, changing the state into the working start, and storing the event; if not, continuously judging whether the current is smaller than a working current threshold value and the state is in a working starting state, if so, changing the state into the working end and storing the event, if not, continuously judging whether the equipment is powered off, if so, changing the state into the shutdown state and storing the event, and if not, suspending the task and returning to the state before the awakening data acquisition task again;
s3: executing collection tasks, including round reading and active reporting;
s4: the storage unit records and stores state data and events;
s4: the concentrator collects data and uploads the data to the master station.
2. The method according to claim 1, wherein in S2, the status data collection includes data collection of voltage, current, power, active power and power parameters.
3. The method for collecting three-phase electricity consumption data based on broadband carrier communication according to claim 1 or 2, wherein the status data collecting process in S2 includes:
initializing a metering IC;
waking up a data acquisition task;
acquiring/converting metering data;
and the task is suspended.
4. The method for collecting three-phase power consumption data based on broadband carrier communication according to claim 1, wherein S4 includes storing of metering data, load recording data and event recording data.
5. The method for collecting three-phase electricity data according to claim 1 or 4, wherein at S4, the status data is stored at 15-minute intervals, the current status data is stored, and the current status data is written from the initial position of the memory in a cyclic recording manner half a year later.
6. The method for collecting three-phase electricity consumption data based on broadband carrier communication according to claim 5, wherein the state data storage process comprises:
waking up a data storage task;
judging whether the state data storage area is full, if so, erasing a longer data sector, then writing data, and finally suspending the task; if not, searching the available sector flash, erasing the sector, writing data and finally suspending the task.
7. The method as claimed in claim 5, wherein the event storage is a cyclic record, and the event is stored when the event occurs, and the event is written from the initial position of the memory half a year or after the storage space is full.
8. The three-phase power utilization data acquisition method based on broadband carrier communication according to claim 7, characterized in that the specific method of event storage is as follows:
a ring data storage task;
judging whether the storage area is full, if so, erasing a longer data sector, then writing data, and finally suspending the task;
if the judgment is not full, continuously judging whether the half year is full, if the half year is full, erasing a longer data sector, then writing data, and finally suspending the task; if the year is less than half a year, searching the available sector flash, erasing the sector, writing data and finally suspending the task.
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| CN112102605A (en) * | 2020-09-17 | 2020-12-18 | 杭州海兴泽科信息技术有限公司 | Electric energy meter event reporting method and system, electric energy meter event acquiring method and readable storage medium |
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