CN110244253B - Provincial metering center standard quantity transmission online control method - Google Patents
Provincial metering center standard quantity transmission online control method Download PDFInfo
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Abstract
The invention provides a provincial level metering center standard quantity transmission online control method, which comprises the steps of controlling the qualification of a metering verification mechanism, a laboratory and a test detection mechanism; the collection of standard quantity data is managed and controlled, the accuracy of a main electric energy meter for daily measurement is remotely verified, the main electric energy collecting device is used for synchronously collecting the electric energy of the main electric energy meter and the standby electric energy meter in the verification process, the main electric energy collecting device forwards the collected electric energy information of the standby electric energy meter to the standby electric energy collecting device for packaging, processing and transmitting, the performance requirement on the main electric energy collecting device is lowered, the standby electric energy collecting device does not directly package the identification information of the standby electric energy meter when packaging the electric energy information, but collects the received electric energy information by adopting a plurality of sampling signals, the time and the electric energy information of the collected electric energy are packaged, and therefore the situation that each standby electric energy collecting device is configured with the corresponding identification information of the standby electric energy meter can be avoided.
Description
Technical Field
The invention belongs to the field of power grid metering, and particularly relates to a provincial level metering center standard quantity transmission online control method.
Background
With the rapid advance of the construction of 'three-in-five-in-one' of the national grid company, the requirements for verticalization and refinement of standard quantity transmission service management are continuously improved, the standard quantity transmission service covers the quantity value traceability and transmission work of standard equipment of the whole measurement center, is an important component of the measurement work of the power enterprise, and is a foundation for ensuring the quantity value traceability and accurate quantity value transmission, strengthening the measurement standard management and improving the work efficiency, the work quality and the work accuracy. However, the conventional metering and controlling system lacks a uniform global visual monitoring and displaying function for each metering mechanism, and does not provide a window for displaying the internal metering verification authorization qualification and quality control concept propaganda of the unit. In addition, in the standard quantity data acquisition process, the electric energy is usually measured by the electric energy meter, the electric energy acquisition device acquires the electric energy, and then the acquired electric energy is transmitted to the metering center server. In the use process of the electric energy meter related to data acquisition, the accuracy of the electric energy meter may change (especially a mechanical electric energy meter) along with the time, which affects the accurate metering of the electric energy.
Disclosure of Invention
The invention provides an provincial level metering center standard quantity transmission online control method, which aims to solve the problems that the conventional metering control system cannot control the qualification of each metering mechanism and the accuracy verification efficiency of an electric energy meter is low.
According to a first aspect of the embodiments of the present invention, an online control method for standard quantity transmission of a provincial level metering center is provided, including:
managing and controlling the qualification of a metrological verification mechanism, a laboratory and a detection mechanism;
managing and controlling the acquisition of standard quantity transmission data: aiming at M metering points, each metering point is provided with a main electric energy meter and a standby electric energy meter, the main electric energy meter and the standby electric energy meter corresponding to each metering point are connected with a main electric energy acquisition device, and the main electric energy meter is used for daily measurement of electric energy corresponding to the metering points; the main electric energy acquisition device acquires electric energy measured by the main electric energy meter, packages the acquired electric energy, forms a first electric energy data packet and sends the first electric energy data packet to the metering center server, and the first electric energy data packet comprises address information of the main electric energy acquisition device, identification information of the main electric energy meter and electric energy information;
aiming at N spare electric energy meters in the M spare electric energy meters, a spare electric energy collecting device is correspondingly arranged, M, N are integers which are larger than 2 and N is smaller than or equal to M, a control signal output end of the spare electric energy collecting device is connected with starting ends of the N spare electric energy meters, when the accuracy of the main electric energy meter needs to be checked, the metering center server sends checking information to the spare electric energy collecting device, the spare electric energy collecting device controls the N spare electric energy meters to be started after receiving the checking information, and the N spare electric energy meters measure electric energy corresponding to a metering point after being started;
the main electric energy collection device is provided with N data forwarding ports and N standby electric energy collection ports connected with corresponding standby electric energy meters, each data forwarding port is connected with one standby electric energy curve forming unit, each standby electric energy curve forming unit is connected with one sampling port group in the standby electric energy collection device, each sampling port group comprises two sampling ports, and a control signal output end of the standby electric energy collection device is also connected with an enabling control end of the main electric energy collection device;
the standby electric energy acquisition device sends an enabling control signal to the main electric energy acquisition device after receiving the verification information, the main electric energy acquisition device controls and enables N standby electric energy acquisition ports and N data forwarding ports on the main electric energy acquisition device after receiving the enabling control signal, then the main electric energy acquisition device starts to acquire the electric energy measured by the N standby electric energy meters and forwards the acquired electric energy of the standby electric energy meters to a corresponding standby electric energy curve forming unit through the corresponding data forwarding ports, the standby electric energy curve forming unit forms a corresponding standby electric energy time change curve according to the received electric energy of the corresponding standby electric energy meters and sends the standby electric energy time change curve to corresponding sampling port groups on the standby electric energy acquisition device, and the sampling signal of the 1 st sampling port in each sampling port group is expressed as 2 x L, the sampling signal of the 2 nd sampling port is expressed as 2 x L-1, wherein L represents the sampling times and is an integer greater than 0;
the standby electric energy acquisition device encapsulates electric energy information acquired by two sampling ports in each sampling port group into a second electric energy data packet, wherein the second electric energy data packet comprises address information, electric energy information and a timestamp used for representing electric energy acquisition time of the standby electric energy acquisition device, and after each sampling is completed and before next sampling is started, the second electric energy data packet of the 1 st sampling port group in the current sampling and the second electric energy data packet of the corresponding sampling port group in each sampling before the current sampling are selected to be transmitted to the metering center server, so that the timestamps of the second electric energy data packets transmitted to the metering center server every time are different;
after receiving a first electric energy data packet and a second electric energy data packet, the metering center server firstly determines the address information of the standby electric energy acquisition device corresponding to the address information of the main electric energy acquisition device according to the address information of the main electric energy acquisition device in the first electric energy data packet, screens out the corresponding second electric energy data packet according to the determined address information of the standby electric energy acquisition device, then determines the second electric energy data packet corresponding to each standby electric energy meter according to the timestamp and the receiving time interval in the screened out second electric energy data packet, draws a standby electric energy time change curve corresponding to the standby electric energy meter according to the determined second electric energy data packet for each standby electric energy meter, draws a main electric energy time change curve corresponding to the standby electric energy meter, and compares the corresponding main electric energy time change curve with the standby electric energy time change curve, and analyzing and verifying the measurement accuracy of the main electric energy meter.
In an optional practical manner, after each sampling is completed and before the next sampling is started, the standby electric energy collection device selects to transmit the second electric energy data packet of the 1 st sampling port group in the current sampling and the second electric energy data packet of the corresponding sampling port group in each sampling before the current sampling to the metering center server, and the method includes: after the L-th sampling is completed and before the L + 1-th sampling is started, transmitting a second electric energy data packet of the 1 st sampling port group in the L-th sampling to the metering center server;
and sequentially judging whether the L-j is greater than 0 or not, wherein the j is an integer greater than 0 and is made to take a value from 1, if so, transmitting a second electric energy data packet of a j +1 th sampling port group in the L-j sampling to the metering center server, and otherwise, not processing.
In another optional practical manner, the determining, by the metering center server according to the timestamp and the receiving period in the screened second electric energy data packet, the second electric energy data packet corresponding to each standby electric energy meter includes:
the metering center server firstly determines the receiving time period of the second electric energy data packet for the screened second electric energy data packet, wherein when the second electric energy data packet is transmitted to the metering center server after the L-th sampling is completed and before the L + 1-th sampling is started, the time period of the second electric energy data packet received by the corresponding metering center server is the L-th receiving time period, the second electric energy data packets in the same receiving time period are sequenced according to the size of the time stamps, every two adjacent second electric energy data packets are used as a data packet group, the data packet group with the kth high time stamp is used as the second electric energy data packet corresponding to the kth sampling port group, and k is an integer greater than 0; determining a second electric energy data packet corresponding to each standby electric energy meter according to the corresponding relation between the standby electric energy meters and the sampling port group;
the step of drawing the main electric energy time change curve of the main electric energy meter corresponding to the standby electric energy meter by the metering center server comprises the following steps: determining a first electric energy data packet of the main electric energy meter corresponding to each standby electric energy meter according to the corresponding relation between the main electric energy meter and the standby electric energy meters; and drawing a main electric energy time change curve of the main electric energy meter corresponding to each standby electric energy meter according to the determined first electric energy data packet.
In another optional practical manner, when the metering center server compares the corresponding main power time variation curve with the standby power time variation curve, it is determined whether each power value point on the standby power time variation curve is on the main power time variation curve, if so, the measurement of the main power meter is accurately verified, otherwise, the measurement of the main power meter is not accurate.
In another alternative implementation, managing the qualification of the metrological verification institution, the laboratory and the inspection and testing institution includes:
managing and displaying qualification grade, expiration time and honor information of a metrological verification mechanism, a laboratory and a detection mechanism;
and alarming within corresponding preset time before the qualification of the metrological verification mechanism, the laboratory and the inspection and detection mechanism is due.
The invention has the beneficial effects that:
1. according to the invention, the standby electric energy meter serving as the main electric energy meter accuracy verification auxiliary equipment is connected with the main electric energy meter acquisition device, and the main electric energy meter acquisition device is used for acquiring the electric energy of the standby electric energy meter, so that the synchronous acquisition of the electric energy of the main electric energy meter and the standby electric energy meter can be realized; the standby electric energy collecting device is arranged, the main electric energy meter collecting device transmits the electric energy information of the standby electric energy meter collected by the main electric energy meter collecting device to the standby electric energy collecting device, and the standby electric energy collecting device processes and transmits the electric energy of the standby electric energy meter, so that the requirement on the processing communication performance of the main electric energy meter collecting device can be reduced; the standby electric energy meter is controlled to be started only when the accuracy of the main electric energy meter is required to be checked, and the standby electric energy meter is not started in daily measurement, so that the accuracy change of the standby electric energy meter can be avoided, and the main electric energy meter can be checked more accurately by taking the electric energy measured by the standby electric energy meter as a standard; when the standby electric energy acquisition device packages the received electric energy, the standby electric energy acquisition device does not search the identification information corresponding to the standby electric energy meter firstly and then packages the identification information and the electric energy information into the data packet, but forms an electric energy time change curve according to the received electric energy firstly and then acquires the electric energy time change curve by adopting two sampling signals, packages the time and the electric energy information of the acquired electric energy into a second electric energy data packet, and designs a transmission mechanism of the second electric energy data packet and an identification mechanism of the second electric energy data packet by the metering center server, so that each standby electric energy acquisition device can be prevented from being configured respectively, and the transformation efficiency is improved; in addition, in the transmission mechanism of the second electric energy data packet, after sampling is completed each time and before next sampling is started, the corresponding electric energy data packet is transmitted, namely after data is acquired each time, the corresponding data is transmitted first, and then next data acquisition is performed, so that the time stamps of the second electric energy data packets transmitted to the metering center server each time are prevented from being repeated; according to the invention, by designing the transmission mechanism of the second electric energy data packet, the transmission efficiency can be improved, and the simultaneous verification of the accuracy of a plurality of main electric energy meters can be realized;
2. the invention manages and displays the qualification grade, expiration time and honor information of the metrological verification mechanism, the laboratory and the inspection and detection mechanism, can conveniently carry out propaganda and display on each mechanism, and can avoid the condition of qualification overdue by giving an alarm in the corresponding preset time before the qualification expires.
Drawings
FIG. 1 is a flowchart of an embodiment of a provincial level metering center standard quantity transmission online control method of the invention;
FIG. 2 is a block diagram of an exemplary circuit for analyzing the accuracy of a power meter under the control of the data collection and management of the standard transmission in accordance with the present invention;
FIG. 3 is a schematic diagram illustrating one embodiment of relationships between acquisition times, acquisition port groups, and timestamps.
Detailed Description
In order to make the technical solutions in the embodiments of the present invention better understood and make the above objects, features and advantages of the embodiments of the present invention more comprehensible, the technical solutions in the embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the term "connected" is to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, or a communication between two elements, or may be a direct connection or an indirect connection through an intermediate medium, and a specific meaning of the term may be understood by those skilled in the art according to specific situations.
Referring to fig. 1, a flowchart of an embodiment of a provincial level metering center standard quantity online control method of the present invention is shown. The provincial level metering center standard quantity transmission online control method can comprise the following steps:
and S101, managing and controlling the qualification of the metrological verification mechanism, the laboratory and the inspection and detection mechanism.
In the embodiment, the qualification grade, expiration time and honor information of the metrological verification mechanism, the laboratory and the inspection and detection mechanism are managed and displayed; and alarming within corresponding preset time before the qualification of the metrological verification mechanism, the laboratory and the inspection and detection mechanism is due. The invention manages and displays the qualification grade, expiration time and honor information of the metrological verification mechanism, the laboratory and the inspection and detection mechanism, can conveniently carry out propaganda and display on each mechanism, and can avoid the condition of qualification overdue by giving an alarm in the corresponding preset time before the qualification expires.
S102, managing and controlling the acquisition of standard quantity transmission data: aiming at M metering points, each metering point is provided with a main electric energy meter and a standby electric energy meter, the main electric energy meter and the standby electric energy meter corresponding to each metering point are connected with a main electric energy acquisition device, and the main electric energy meter is used for daily measurement of electric energy corresponding to the metering points; the main electric energy collecting device collects the electric energy measured by the main electric energy meter, packages the collected electric energy, forms a first electric energy data packet and sends the first electric energy data packet to the metering center server, and the first electric energy data packet comprises address information of the main electric energy collecting device, address information of the metering center server, identification information of the main electric energy meter and electric energy information. Taking the example that the main electric energy collection device is connected with a main electric energy meter and a standby electric energy meter of 4 metering points, wherein M is 4, and N is 3, as shown in fig. 2, the metering point 1 is provided with the main electric energy meter 1 and the standby electric energy meter 1, the metering point 2 is provided with the main electric energy meter 2 and the standby electric energy meter 2, the metering point 3 is provided with the main electric energy meter 3 and the standby electric energy meter 3, and the metering point 4 is provided with the main electric energy meter 4 and the standby electric energy meter 4, wherein the main electric energy meter 1-4 and the standby electric energy meter 1-4 are respectively connected with the main electric energy collection device, and the main electric energy meter 1-4 is used for daily measurement of electric energy corresponding to the metering points 1-4; after the main electric energy collecting device collects electric energy, the corresponding main electric energy meter identification information is searched locally according to the port where the electric energy is collected, then the collected electric energy information and the main electric energy meter identification information are packaged to form a first electric energy data packet, and the first electric energy data packet is sent to the metering center server.
In this embodiment, the electric energy meter is used as the most basic unit for electric energy measurement, and the accuracy of electric energy measurement directly affects the accurate measurement of electric energy. At present, whether the measurement of the electric energy meter is accurate can only be determined by periodically carrying out electric energy meter verification on site, but the verification efficiency is low because workers are required to go to the site for verification. The invention provides a method for verifying the accuracy of an electric energy meter in a remote mode, so that a main electric energy meter and a standby electric energy meter are arranged for each metering point, wherein the main electric energy meter is used for carrying out daily electric energy measurement on the metering points, the standby electric energy meter is used as auxiliary verification equipment when the accuracy of the main electric energy meter is required to be verified, and the accuracy of the main electric energy meter can be analyzed and verified by comparing the electric energy measured by the main electric energy meter and the standby electric energy meter because the standby electric energy meter is not used in the daily measurement and the possibility of accuracy change of the standby electric energy meter caused by the abrasion of self components is low.
In order to accurately compare the electric energy measured by the main electric energy meter and the standby electric energy meter, the electric energy measured by the main electric energy meter and the standby electric energy meter needs to be synchronously collected, otherwise, the electric energy has no comparability. Since the verification is performed randomly, if two different electric energy collecting devices are used to collect the electric energy measured by the main electric energy meter and the standby electric energy meter respectively, it is difficult to ensure the synchronization of the collection, and therefore, it is better to collect the electric energy measured by the main electric energy meter and the standby electric energy meter by using the same electric energy collecting device. However, the electric energy acquisition device not only needs to acquire electric energy, but also needs to package, process and transmit electric energy information, one electric energy acquisition device may be connected with the main electric energy meters of a plurality of metering points in actual application, if the electric energy acquisition device is connected with the standby electric energy meters of a plurality of metering points, higher requirements on the processing performance and the communication performance of the electric energy acquisition device can be provided, and even the main electric energy acquisition device may need to be replaced again to meet verification requirements, so that the reconstruction cost is increased undoubtedly. The invention firstly adopts a main electric energy collecting device to respectively collect the electric energy measured by a main electric energy meter and a standby electric energy meter corresponding to a metering point, then forwards the electric energy information of the standby electric energy meter to an additional standby electric energy collecting device, and the standby electric energy collecting device processes and transmits the electric energy information measured by the standby electric energy meter, thereby reducing the requirements on the processing performance and the communication performance of the main electric energy collecting device.
Specifically, a standby electric energy acquisition device is correspondingly arranged for N standby electric energy meters in the M standby electric energy meters, M, N are integers greater than 2 and N is less than or equal to M, a control signal output end of the standby electric energy acquisition device is connected with a starting end of the N standby electric energy meters, when the accuracy of the main electric energy meter needs to be checked, the metering center server sends checking information to the standby electric energy acquisition device, the standby electric energy acquisition device controls the N standby electric energy meters to start after receiving the checking information, and the N standby electric energy meters measure electric energy corresponding to a metering point after starting; the main electric energy collection device is provided with N data forwarding ports and N standby electric energy collection ports connected with corresponding standby electric energy meters, and the standby electric energy collection ports and the data forwarding ports correspond to each group.
For example, in the example shown in fig. 2, 3 metering points out of the 4 metering points correspond to one backup electric energy collecting device, the backup electric energy collecting device processes and transmits the electric energy measured by the backup electric energy meter in the 3 metering points, and the remaining metering points may correspond to another backup electric energy collecting device, and processes and transmits the electric energy measured by the backup electric energy meter in the remaining metering points by using the another backup electric energy collecting device or directly using the main electric energy collecting device. The control signal output end of the standby electric energy acquisition device is connected with the starting end of the standby electric energy meter 1-3, when the accuracy of the main electric energy meter needs to be checked, the metering center server sends checking information to the standby electric energy acquisition device, the standby electric energy acquisition device controls the standby electric energy meter 1-3 to be started after receiving the checking information, and the standby electric energy meter 1-3 measures the electric energy corresponding to the metering point 1-3 after being started. The main electric energy acquisition device is provided with 3 data forwarding ports and is used for correspondingly forwarding the electric energy information of the standby electric energy meters 1-3 acquired by the standby electric energy acquisition ports.
Although the standby electric energy collection device is added, the requirements on the processing performance and the communication performance of the main electric energy collection device can be reduced, in order to facilitate the metering center server to identify the electric energy information of each electric energy meter, after the main electric energy collection device collects the electric energy, the main electric energy collection device firstly searches the electric energy meter identification information corresponding to the port according to the port receiving the electric energy, and then packages the electric energy meter identification information and the electric energy information into the first electric energy data packet. If the electric energy information collected by the main electric energy collecting device is forwarded to the standby electric energy collecting device, the standby electric energy collecting device also finds out corresponding electric energy meter identification information, and encapsulates the electric energy meter identification information and the electric energy information into a first electric energy data packet, then the standby electric energy collecting device should store the corresponding relation between the forwarding data receiving port and the electric energy meter identification symbol in advance locally, each standby electric energy collecting device needs to be configured specially, and obviously, the efficiency is low. In order to improve the universality of the standby electric energy acquisition device, the invention provides a brand-new method for packaging the electric energy measured by the standby electric energy meter, and can ensure that a metering center server can quickly and accurately position the electric energy information synchronously measured by each main electric energy meter and the standby electric energy meter.
Specifically, each data forwarding port is connected with a standby electric energy curve forming unit, each standby electric energy curve forming unit is connected with a sampling port group in the standby electric energy acquisition device, each sampling port group comprises two sampling ports, and a control signal output end of the standby electric energy acquisition device is further connected with an enabling control end of the main electric energy acquisition device. The standby electric energy acquisition device sends an enabling control signal to the main electric energy acquisition device after receiving the verification information, the main electric energy acquisition device controls and enables N standby electric energy acquisition ports and N data forwarding ports on the main electric energy acquisition device after receiving the enabling control signal, then the main electric energy acquisition device starts to acquire the electric energy measured by the N standby electric energy meters and forwards the acquired electric energy of the standby electric energy meters to a corresponding standby electric energy curve forming unit through the corresponding data forwarding ports, the standby electric energy curve forming unit forms corresponding standby electric energy time change curves (connects all the electric energy acquired at all the time) according to the received electric energy of the corresponding standby electric energy meters and sends the standby electric energy time change curves to corresponding sampling port groups on the standby electric energy acquisition device, the sampling signal of the 1 st sampling port in each sampling port group is represented as 2L, the sampling signal of the 2 nd sampling port is represented as 2 x L-1, wherein L represents the sampling times and is an integer greater than 0.
For example, in the example shown in fig. 2, 3 data forwarding ports are all connected to one standby power curve forming unit, 3 standby power curve forming units are all connected to one sampling port group in the standby power acquisition device, the sampling signal of the 1 st sampling port in each sampling port group is 2 × L, and the sampling signal of the 2 nd sampling port is 2 × L-1. Taking the randomly calibrated time as 10:00:00 as an example, when L is 1, that is, when sampling for the first time, the time when the 1 st to 2 nd sampling ports in each sampling port group acquire electric energy is: when L is 2, that is, the second sampling, the 1 st to 2 nd sampling ports in each sampling port group respectively acquire electric energy at the following moments: when L is 3, that is, the third sampling, the 1 st to 2 nd sampling ports in the sampling port group all collect electric energy at the following time: 10:00:06, 10:00:05, and so on. It can be seen from the above time points, for the 1 st sampling port in each sampling port group, the time points of collecting electric energy during the first to third sampling are respectively: 10:00:02, 10:00:04 and 10:00:06, for the 2 nd sampling port in each sampling port group, the time of collecting electric energy from the first sampling to the third sampling is respectively as follows: 10:00:01, 10:00:03 and 10:00: 05. It can be seen that the sampling periods of the two sampling ports in each sampling port group are the same and are 2s, but the sampling starting times are different, and in the same sampling, the times at which the two sampling ports in the same sampling port group acquire electric energy are different, the times at which the corresponding sampling ports in different sampling port groups acquire electric energy are the same, and in the different times of sampling, the times at which the two sampling ports in each sampling port group acquire electric energy are different.
The standby electric energy acquisition device encapsulates electric energy information collected by two sampling ports in each sampling port group into a second electric energy data packet, the second electric energy data packet comprises address information and electric energy information of the standby electric energy acquisition device and a timestamp used for representing electric energy acquisition time, and after each sampling is completed and before the next sampling is started, the second electric energy data packet corresponding to the 1 st sampling port group in the sampling and the second electric energy data packet corresponding to the sampling port group in each sampling before the sampling are selected to be transmitted to the metering center server, so that the timestamps of the second electric energy data packets transmitted to the metering center server in each sampling are different. Specifically, after each sampling is completed and before the next sampling is started, the standby electric energy collection device selects to transmit the second electric energy data packet of the 1 st sampling port group in the current sampling and the second electric energy data packet of the corresponding sampling port group in each sampling before the current sampling to the metering center server, and the method includes: after the L-th sampling is completed and before the L + 1-th sampling is started, transmitting a second electric energy data packet of the 1 st sampling port group in the L-th sampling to the metering center server; and sequentially judging whether the L-j is greater than 0 or not, wherein the j is an integer greater than 0 and is made to take a value from 1, if so, transmitting a second electric energy data packet of a j +1 th sampling port group in the L-j sampling to the metering center server, and otherwise, not processing.
For example, in the example shown in fig. 2, the schematic time stamps of the second electrical energy data packet corresponding to 3 sampling port groups in the first sampling are shown in fig. 3, the time stamps of the second electrical energy data packet corresponding to 3 sampling port groups in the first sampling are all 10:00:01 and 10:00:02, the time stamps of the second electrical energy data packet corresponding to 3 sampling port groups in the second sampling are all 10:00:03 and 10:00:04, and the time stamps of the second electrical energy data packet corresponding to 3 sampling port groups in the third sampling are all 10:00:05 and 10:00: 06. After the first time (L ═ 1) sampling is completed and before the second time of sampling is started, since L-j is equal to 0 when j is equal to 1, only the second power data packet corresponding to the 1 st sampling port group in the first time of sampling is transmitted to the metering center server, and the time stamp of the second power data packet transmitted to the metering center server at this time comprises: 10:00:01, 10:00: 02; after the second time (L ═ 2) sampling is completed, and before the third time of sampling is started, j is set to take a value from 1, when j is 1, L-j is 1 greater than 0, when j is 2, L-2 is 0, so that in addition to transmitting the second electric energy data packet corresponding to the 1 st sampling port in the second time of sampling to the metering center server, the second electric energy data packet corresponding to the 2 nd sampling port group in the first time of sampling is also transmitted to the metering center server, and at this time, the timestamp of the second electric energy data packet transmitted to the metering center server includes: 10:00:01, 10:00:02, 10:00:03, 10:00: 04; after the third sampling (L ═ 3) is completed and before the fourth sampling is started, j is set to take a value from 1, when j is 1, L-j is greater than 0 when j is 2, and L-j is 0 when j is 3, so that in addition to transmitting the second power data packet corresponding to the 1 st sampling port group in the third sampling to the metering center server, the second power data packet corresponding to the 2 nd sampling port group in the second sampling and the second power data packet corresponding to the 3 rd sampling port group in the first sampling are transmitted to the metering center server, and at this time, the time stamp of the second power data packet transmitted to the metering center server includes: 10:00:01, 10:00:02, 10:00:03, 10:00:04, 10:00:05, 10:00: 06. It can be seen that the timestamps of the second power data packets transmitted to the metering center server each time are different.
After receiving a first electric energy data packet and a second electric energy data packet, the metering center server firstly determines the address information of the standby electric energy acquisition device corresponding to the address information of the main electric energy acquisition device according to the address information of the main electric energy acquisition device in the first electric energy data packet, screens out the corresponding second electric energy data packet according to the determined address information of the standby electric energy acquisition device, then determines the second electric energy data packet corresponding to each standby electric energy meter according to the timestamp and the receiving time interval in the screened out second electric energy data packet, draws a standby electric energy time change curve corresponding to the standby electric energy meter according to the determined second electric energy data packet for each standby electric energy meter, draws a main electric energy time change curve corresponding to the standby electric energy meter, and compares the corresponding main electric energy time change curve with the standby electric energy time change curve, and analyzing and verifying the measurement accuracy of the main electric energy meter.
The step of determining, by the metering center server, the second electric energy data packets corresponding to the respective standby electric energy meters according to the timestamps and the reception periods in the screened second electric energy data packets includes: aiming at the screened second electric energy data packets, when the second electric energy data packets are transmitted in a corresponding transmission time period before the L +1 th sampling is started after the L-th sampling is completed by the metering center server, the time period in which the metering center server correspondingly receives the second electric energy data packets is the L-th receiving time period, aiming at the second electric energy data packets in the same receiving time period, sequencing the second electric energy data packets according to the size of the timestamp, taking every two adjacent second electric energy data packets as a data packet group, taking the data packet group with the kth height as the second electric energy data packet corresponding to the kth sampling port group, and taking k as an integer greater than 0; and determining a second electric energy data packet corresponding to each standby electric energy meter according to the corresponding relation between the standby electric energy meters and the sampling port group. For example, in the timestamp diagram shown in fig. 3, after the third sampling (L ═ 3) is completed and before the fourth sampling starts, the backup energy collection device transmits to the metering center server, in addition to the second energy data packet corresponding to the 1 st sampling port group in the third sampling, the second energy data packet corresponding to the 2 nd sampling port group in the second sampling and the second energy data packet corresponding to the 3 rd sampling port group in the first sampling, as shown by the time stamp circled in fig. 3, at this time, the time stamp of the second energy data packet transmitted to the metering center server includes: 10:00:01, 10:00:02, 10:00:03, 10:00:04, 10:00:05 and 10:00:06, after receiving the second power data packets, the metering center server can identify the second power data packets as being in the 3 rd receiving period, regarding all the second power data in the 3 rd receiving period, regarding every two adjacent second power data packets as one data packet group, regarding the data packet group with the highest timestamp 1 (the second power data packet with the timestamp of 10:00:05 or 10:00: 06) as the second power data packet corresponding to the 1 st sampling port group, regarding the data packet group with the highest timestamp 2 (the second power data packet with the timestamp of 10:00:03 or 10:00: 04) as the second power data packet corresponding to the 2 nd sampling port group, regarding the data packet group with the highest timestamp 3 (the second power data packet with the timestamp of 10:00:01, The second power packet at 10:00: 02) as the second power packet corresponding to the 3 rd sampling port group.
In addition, the step of drawing the main electric energy time change curve of the main electric energy meter corresponding to the standby electric energy meter by the metering center server comprises the following steps: determining a first electric energy data packet of the main electric energy meter corresponding to each standby electric energy meter according to the corresponding relation between the main electric energy meter and the standby electric energy meters; and drawing a main electric energy time change curve of the main electric energy meter corresponding to each standby electric energy meter according to the determined first electric energy data packet. When the corresponding main electric energy time change curve is compared with the standby electric energy time change curve by the metering center server, whether each electric energy value point on the standby electric energy time change curve is on the main electric energy time change curve or not can be judged, if yes, the measurement of the main electric energy meter is accurately verified, and otherwise, the measurement of the main electric energy meter is not accurately verified.
According to the embodiment, the standby electric energy meter serving as the main electric energy meter accuracy verification auxiliary equipment is connected with the main electric energy meter acquisition device, and the main electric energy meter acquisition device is used for acquiring the electric energy of the standby electric energy meter, so that the synchronous acquisition of the electric energy of the main electric energy meter and the electric energy of the standby electric energy meter can be realized; the standby electric energy collecting device is arranged, the main electric energy meter collecting device transmits the electric energy information of the standby electric energy meter collected by the main electric energy meter collecting device to the standby electric energy collecting device, and the standby electric energy collecting device processes and transmits the electric energy of the standby electric energy meter, so that the requirement on the processing communication performance of the main electric energy meter collecting device can be reduced; the standby electric energy meter is controlled to be started only when the accuracy of the main electric energy meter is required to be checked, and the standby electric energy meter is not started in daily measurement, so that the accuracy change of the standby electric energy meter can be avoided, and the main electric energy meter can be checked more accurately by taking the electric energy measured by the standby electric energy meter as a standard; when the standby electric energy acquisition device packages the received electric energy, the standby electric energy acquisition device does not search the identification information corresponding to the standby electric energy meter firstly and then packages the identification information and the electric energy information into the data packet, but forms an electric energy time change curve according to the received electric energy firstly and then acquires the electric energy time change curve by adopting two sampling signals, packages the time and the electric energy information of the acquired electric energy into a second electric energy data packet, and designs a transmission mechanism of the second electric energy data packet and an identification mechanism of the second electric energy data packet by the metering center server, so that each standby electric energy acquisition device can be prevented from being configured respectively, and the transformation efficiency is improved; in addition, in the transmission mechanism of the second electric energy data packet, after sampling is completed each time and before next sampling is started, the corresponding electric energy data packet is transmitted, namely after data is acquired each time, the corresponding data is transmitted first, and then next data acquisition is performed, so that the time stamps of the second electric energy data packets transmitted to the metering center server each time are prevented from being repeated; according to the invention, by designing the transmission mechanism of the second electric energy data packet, the transmission efficiency can be improved, and the simultaneous verification of the accuracy of a plurality of main electric energy meters can be realized.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (5)
1. A provincial level metering center standard quantity transmission online control method is characterized by comprising the following steps:
managing and controlling the qualification of a metrological verification mechanism, a laboratory and a detection mechanism;
managing and controlling the acquisition of standard quantity transmission data: aiming at M metering points, each metering point is provided with a main electric energy meter and a standby electric energy meter, the main electric energy meter and the standby electric energy meter corresponding to each metering point are connected with a main electric energy acquisition device, and the main electric energy meter is used for daily measurement of electric energy corresponding to the metering points; the main electric energy acquisition device acquires electric energy measured by the main electric energy meter, packages the acquired electric energy, forms a first electric energy data packet and sends the first electric energy data packet to the metering center server, and the first electric energy data packet comprises address information of the main electric energy acquisition device, identification information of the main electric energy meter and electric energy information;
aiming at N spare electric energy meters in the M spare electric energy meters, a spare electric energy collecting device is correspondingly arranged, M, N are integers which are larger than 2 and N is smaller than or equal to M, a control signal output end of the spare electric energy collecting device is connected with starting ends of the N spare electric energy meters, when the accuracy of the main electric energy meter needs to be checked, the metering center server sends checking information to the spare electric energy collecting device, the spare electric energy collecting device controls the N spare electric energy meters to be started after receiving the checking information, and the N spare electric energy meters measure electric energy corresponding to a metering point after being started;
the main electric energy collection device is provided with N data forwarding ports and N standby electric energy collection ports connected with corresponding standby electric energy meters, each data forwarding port is connected with one standby electric energy curve forming unit, each standby electric energy curve forming unit is connected with one sampling port group in the standby electric energy collection device, each sampling port group comprises two sampling ports, and a control signal output end of the standby electric energy collection device is also connected with an enabling control end of the main electric energy collection device;
the standby electric energy acquisition device sends an enabling control signal to the main electric energy acquisition device after receiving the verification information, the main electric energy acquisition device controls and enables N standby electric energy acquisition ports and N data forwarding ports on the main electric energy acquisition device after receiving the enabling control signal, then the main electric energy acquisition device starts to acquire the electric energy measured by the N standby electric energy meters and forwards the acquired electric energy of the standby electric energy meters to a corresponding standby electric energy curve forming unit through the corresponding data forwarding ports, the standby electric energy curve forming unit forms a corresponding standby electric energy time change curve according to the received electric energy of the corresponding standby electric energy meters and sends the standby electric energy time change curve to corresponding sampling port groups on the standby electric energy acquisition device, and the sampling signal of the 1 st sampling port in each sampling port group is expressed as 2 x L, the sampling signal of the 2 nd sampling port is expressed as 2 x L-1, wherein L represents the sampling times and is an integer greater than 0;
the standby electric energy acquisition device encapsulates electric energy information acquired by two sampling ports in each sampling port group into a second electric energy data packet, wherein the second electric energy data packet comprises address information, electric energy information and a timestamp used for representing electric energy acquisition time of the standby electric energy acquisition device, and after each sampling is completed and before next sampling is started, the second electric energy data packet of the 1 st sampling port group in the current sampling and the second electric energy data packet of the corresponding sampling port group in each sampling before the current sampling are selected to be transmitted to the metering center server, so that the timestamps of the second electric energy data packets transmitted to the metering center server every time are different;
after receiving a first electric energy data packet and a second electric energy data packet, the metering center server firstly determines the address information of the standby electric energy acquisition device corresponding to the address information of the main electric energy acquisition device according to the address information of the main electric energy acquisition device in the first electric energy data packet, screens out the corresponding second electric energy data packet according to the determined address information of the standby electric energy acquisition device, then determines the second electric energy data packet corresponding to each standby electric energy meter according to the timestamp and the receiving time interval in the screened out second electric energy data packet, draws a standby electric energy time change curve corresponding to the standby electric energy meter according to the determined second electric energy data packet for each standby electric energy meter, draws a main electric energy time change curve corresponding to the standby electric energy meter, and compares the corresponding main electric energy time change curve with the standby electric energy time change curve, and analyzing and verifying the measurement accuracy of the main electric energy meter.
2. The provincial level metering center standard quantity transmission online control method according to claim 1, wherein the standby electric energy collection device selects to transmit the second electric energy data packet of the 1 st sampling port group in the current sampling and the second electric energy data packet of the corresponding sampling port group in each sampling before the current sampling to the metering center server after each sampling is completed and before the next sampling is started, and the method comprises the following steps: after the L-th sampling is completed and before the L + 1-th sampling is started, transmitting a second electric energy data packet of the 1 st sampling port group in the L-th sampling to the metering center server;
and sequentially judging whether the L-j is greater than 0 or not, wherein the j is an integer greater than 0 and is made to take a value from 1, if so, transmitting a second electric energy data packet of a j +1 th sampling port group in the L-j sampling to the metering center server, and otherwise, not processing.
3. The provincial level metering center standard quantity transmission online control method according to claim 1, wherein the step of determining, by the metering center server, the second electric energy data packets corresponding to the respective standby electric energy meters according to the time stamps and the receiving periods in the screened second electric energy data packets comprises the steps of:
the metering center server firstly determines the receiving time period of the second electric energy data packet for the screened second electric energy data packet, wherein when the second electric energy data packet is transmitted to the metering center server after the L-th sampling is completed and before the L + 1-th sampling is started, the time period of the second electric energy data packet received by the corresponding metering center server is the L-th receiving time period, the second electric energy data packets in the same receiving time period are sequenced according to the size of the time stamps, every two adjacent second electric energy data packets are used as a data packet group, the data packet group with the kth high time stamp is used as the second electric energy data packet corresponding to the kth sampling port group, and k is an integer greater than 0; determining a second electric energy data packet corresponding to each standby electric energy meter according to the corresponding relation between the standby electric energy meters and the sampling port group;
the step of drawing the main electric energy time change curve of the main electric energy meter corresponding to the standby electric energy meter by the metering center server comprises the following steps: determining a first electric energy data packet of the main electric energy meter corresponding to each standby electric energy meter according to the corresponding relation between the main electric energy meter and the standby electric energy meters; and drawing a main electric energy time change curve of the main electric energy meter corresponding to each standby electric energy meter according to the determined first electric energy data packet.
4. The provincial-level metering center standard quantity transmission online control method according to claim 1, wherein the metering center server judges whether each electric energy value point on the standby electric energy time variation curve is on the main electric energy time variation curve or not when comparing the corresponding main electric energy time variation curve with the standby electric energy time variation curve, if so, the measurement of the main electric energy meter is verified to be accurate, and otherwise, the measurement of the main electric energy meter is verified to be inaccurate.
5. The provincial level metrological center standard quantity online management and control method as claimed in claim 1, wherein the management and control of the qualification of metrological verification institutions, laboratories and inspection and detection institutions comprises:
managing and displaying qualification grade, expiration time and honor information of a metrological verification mechanism, a laboratory and a detection mechanism;
and alarming within corresponding preset time before the qualification of the metrological verification mechanism, the laboratory and the inspection and detection mechanism is due.
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