CN112152668A - Collection, operation and maintenance system based on HPLC (high performance liquid chromatography) platform area - Google Patents
Collection, operation and maintenance system based on HPLC (high performance liquid chromatography) platform area Download PDFInfo
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- CN112152668A CN112152668A CN202010857255.5A CN202010857255A CN112152668A CN 112152668 A CN112152668 A CN 112152668A CN 202010857255 A CN202010857255 A CN 202010857255A CN 112152668 A CN112152668 A CN 112152668A
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Abstract
The invention relates to an acquisition, operation and maintenance system based on an HPLC (high performance liquid chromatography) distribution area, which comprises an intelligent distribution transformer terminal, an HPLC (high performance liquid chromatography) communication unit, a collector, an intelligent electric meter, a central processing unit and a power supply unit, wherein the intelligent distribution transformer terminal is connected with the central processing unit through a power line, the central processing unit comprises a storage unit, a wireless communication unit and an electricity storage unit, the central processing unit is also connected with the HPLC communication unit through the power line, a carrier communication chip is arranged in the HPLC communication unit and realizes the functions of modulating, demodulating and receiving and sending data on the power line, the wireless communication module in the carrier communication chip is connected with the wireless communication unit of the central processing unit, the HPLC communication unit is connected with the collector through the power line, the collector is connected with the intelligent electric meter and the intelligent electric meter box through the power line, and, The collector provides electric quantity; the invention has the advantages of reliable operation and comprehensive functions.
Description
Technical Field
The invention relates to the technical field of information acquisition, in particular to an acquisition, operation and maintenance system based on an HPLC (high performance liquid chromatography) platform area.
Background
According to the overall planning requirements of national intelligent power grid construction, in order to ensure that the national intelligent power grid construction standard is orderly advanced, so that the overall goal of 'full coverage, full collection and full monitoring' of the power consumer power consumption information acquisition system construction is gradually realized, a national power grid company sets a 'power consumer power consumption information acquisition system series standard', and requires that the power consumption information acquisition is comprehensively carried out on all accessed power consumers within the range of a national power grid, so that the functions of automatic acquisition, metering abnormity warning, power quality monitoring, power consumption analysis and management and the like of the power consumption information are realized, and in 2020, China comprehensively builds a uniform strong intelligent power grid and establishes a high-speed, bidirectional, real-time and integrated communication system.
At present, an electric power company is vigorously building an electricity utilization information acquisition system, comprehensively popularizing and applying an intelligent electric energy meter, and realizing full coverage, full acquisition and full cost control, but along with the continuous increase of the construction scale, various faults of the acquisition system are increased, and the current fault positioning means is single and low in efficiency; the failure resolution is slow; the operation and maintenance cost rises sharply; even leading to a decrease in the availability of the acquisition system. Because the detection means of the current power grid is different from foreign countries, data show that the modernization, energy conservation and safety of power grid dispatching are difficult to realize due to the difficult detection of demand change and the insufficient management means, and line loss caused by man-made work is often prohibited in economically undeveloped areas; therefore, it is very necessary to provide a collection, operation and maintenance system based on HPLC zones, which is reliable in operation and comprehensive in function.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an acquisition, operation and maintenance system based on an HPLC (high performance liquid chromatography) platform area, which is reliable in operation and comprehensive in function.
The purpose of the invention is realized as follows: collection fortune dimension system based on HPLC platform district, it includes intelligent distribution transformer terminal, HPLC communication unit, collector, smart electric meter, central processing unit, electrical unit, intelligence distribution transformer terminal is connected with central processing unit through the power line, central processing unit includes storage unit, wireless communication unit, accumulate unit, central processing unit still is connected with HPLC communication unit through the power line, the inside carrier communication chip that is provided with of HPLC communication unit, the carrier communication chip realizes the modulation, demodulation and the data transceiver function of data at the power line to be connected with central processing unit's wireless communication unit through the inside wireless communication module of carrier communication chip, HPLC communication unit has the collector through power line connection, the collector passes through the power line and is connected with smart electric meter and smart electric meter case, electrical unit is central processing unit, electrical unit, The HPLC communication unit and the collector provide electricity.
Install the table end module on the smart electric meter, table end module reads ammeter basic information, basic information includes the user number, power consumption address and table number, table end module passes through wireless communication device and central processing unit's wireless communication unit and is connected, send the basic information who reads inside the central processing unit, central processing unit stores information in memory cell, compare with received feedback information according to the storage information and verify, thereby realize smart electric meter accurate positioning and data contrast, carry out the data contrast with the information of received HPLC communication unit feedback, and with data information synchronization to intelligent distribution transform terminal.
The number of the collectors is multiple, and according to feedback information sent by the HPLC communication unit, the collectors are used for collecting user numbers, electricity utilization addresses and meter numbers, using voltage, current and electricity generated by the intelligent ammeter and feeding data information back to a carrier communication chip of the HPLC communication unit.
The Hi3911 chip is a Hua Hai Si Hi3911 chip, the Hi3911 chip comprises an ARM CPU subsystem, an MAC and PHY based on OFDM communication and an analog front end, the Hi3911 chip comprises a Hi3911T used for an electric meter and a Hi3911C used for a concentrator, and the Hi3911T chip integrates peripheral interfaces such as UART and GPIO; hi3911C integrates Ethernet controllers, and realizes high-speed connection with Ethernet through an MII interface.
The HPLC communication unit is also connected with PAD-based mobile communication equipment of the operation and maintenance treasure operation software and the treasure reading and controlling software, and reliable, convenient and safe field debugging means are provided by using the treasure reading and controlling equipment; PAD-based operation software of the operation and maintenance device simplifies field operation and improves working efficiency; the big data provided by the software is analyzed and intelligent analysis suggestions are given.
And the central processing unit analyzes the data abnormity, including analysis of abnormal values of basic information of the intelligent electric meter, correction of abnormal quantity of electric quantity and line loss of the transformer area in part of areas, detection of electricity stealing, correction of electricity selling quantity and line loss of the transformer area, and synchronizes the information to the intelligent distribution transformer terminal.
The invention has the beneficial effects that: the invention relates to a safe, convenient and efficient field operation and maintenance and problem positioning and solving system aiming at the field of low-voltage centralized meter reading in partial regions. The system optimizes the existing widely applied system from three layers of communication, operating software and equipment, thereby finally improving the field work efficiency. The following aspects are highlighted:
1) an HPLC carrier system is used, the field device management range is enlarged, the data acquisition quantity and speed are improved, and basic data are provided for software big data analysis;
2) the 'copy and control treasure' equipment is used, and a reliable, convenient and safe field debugging means is provided;
3) PAD-based operation software of the operation and maintenance device simplifies field operation and improves working efficiency;
the method adopts Hi3911 which is an HPLC power line carrier communication chip applied to power meter reading in Huanshisi, realizes the modulation, demodulation and data receiving and transmitting functions of data on the power line, provides a bidirectional, high-speed and real-time communication solution, solves the problem of higher power consumption of foreign carrier chips, and is suitable for the design specification of a national grid intelligent electric meter; the invention has the advantages of reliable operation and comprehensive functions.
Drawings
FIG. 1 is a block diagram of the connection of the various components of the present invention.
Fig. 2 is a functional block diagram of Hi3911C of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1
Collection fortune dimension system based on HPLC platform district, it includes that intelligence is joined in marriage and is become terminal, HPLC communication unit, collector, smart electric meter, central processing unit, electrical unit, intelligence is joined in marriage and becomes terminal and be connected with central processing unit through the power line, central processing unit includes storage unit, wireless communication unit, accumulate unit, central processing unit still is connected with HPLC communication unit through the power line, the inside carrier communication chip that is provided with of HPLC communication unit, the carrier communication chip realizes data modulation, demodulation and data transceiver function at the power line to be connected with central processing unit's wireless communication unit through the inside wireless communication module of carrier communication chip, HPLC communication unit has the collector through power line connection, the collector passes through the power line and is connected with smart electric meter and smart electric meter case.
According to the invention, Hi3911 is an HPLC power line carrier communication chip applied to electric power meter reading by Hua Kaishi, so that the modulation, demodulation and data receiving and sending functions of data on a power line are realized, a bidirectional, high-speed and real-time communication solution is provided, and the problem of high power consumption of a foreign carrier chip is solved, so that the method is suitable for the design specification of a national network intelligent electric meter; hi3911 includes an ARM CPU subsystem, a MAC and PHY based on OFDM communication, an analog front end, and the like. The Hi3911 chip includes Hi3911T for the electric meter and Hi3911C for the concentrator. Hi3911T integrates peripheral interfaces such as UART and GPIO; hi3911C integrates Ethernet controllers, and realizes high-speed connection with Ethernet through an MII interface. The functional block diagram is shown in fig. 2, and the main performance indexes are as follows:
the key indexes are as follows:
the peak rate of the physical layer is 14 Mbit/s;
the peak rate of the application layer is 2.8 Mbit/s;
the working power consumption of the chip is 260 mW.
Physical layer characteristics:
the default working frequency range is 0.7 MHz-3 MHz;
adopting OFDM technology, the sub-carrier supports BPSK, QPSK, 8QAM, 16QAM, 64QAM modulation;
self-adaptive modulation of subcarriers;
the FEC and CRC functions are supported, and the strong denoising and error correcting capabilities are realized;
a highly robust frame structure designed for complex power channels.
③ MAC characteristics:
support TDMA and CSMA/CA, offer the collision avoidance mechanism;
data segmentation and recombination are supported, and transmission efficiency is improved;
supporting a data retransmission mechanism;
supporting AES/3DES/DES data encryption and decryption;
and 4-level QoS is supported, and different service quality requirements are met.
Networking characteristics:
supporting automatic and rapid networking;
the number of the supported terminals is 1000;
automatic relay is supported, and 15-level relay can be supported maximally;
support dynamic routing, multi-path addressing;
static routing is supported.
Network coexistence:
the ITU G.9972 ISP protocol is supported, and the home interconnection equipment coexists;
and multiple sets of transformers are supported to coexist, and crosstalk is avoided.
⑥ CPU ：
The working frequency of the high-performance ARM processor is 266 MHz;
an embedded cache comprising: I-Cache, D-Cache, ITCM.
Storage interface:
a large-capacity SDRAM memory is arranged inside;
and supporting the SPI external memory.
And the peripheral interface:
1 MII interface, supporting 10/100Mbit/s network extension (only Hi3911C supports);
1 SPI Master/Slave interface (Hi 3911C support only)
Hi 3911C: 4 UART interfaces;
hi 3911T: 3 UART interfaces; 1 infrared interface;
hi 3911C: 24 GPIO interfaces;
hi 3911T: 13 GPIO interfaces; 1I 2C interface.
Ninthly, other information:
packaging information: an Epad-LQFP128 package (Hi 3911C), a QFN64 package (Hi 3911T);
working temperature: -40 ℃ to +85 ℃;
working voltage: 3.3V and 1.2V.
The service indexes of the HPLC carrier system after field practical application are shown in Table 1:
TABLE 1 HPLC CARRIER SYSTEM FIELD-OF-SITU SERVICE INDICATOR
| Serial number | Product characteristics | HPLC carrier wave |
| 1 | Success rate of daily collection | 100% |
| 2 | Time delay for reading of daily collected data | 0.1 second |
| 3 | Master station call test success rate | 100% |
| 4 | Maximum communication distance | 2000 m |
| 5 | Daily average carrier module power consumption | 281.6mw |
| 6 | Application of fee control function | < 10 seconds |
| 7 | Automatic reporting application of table number | < 15 minutes |
| 8 | Average networking time | < 10 minutes |
| 9 | Single point of access time | <10 |
| 10 | Supporting relay levels | Stage 15 |
| 11 | Full network software upgrade | 10 seconds/module |
The chip is specially designed for intelligent meter reading of national network. Through a large amount of visits and investigations to users. Through field test and research on various working condition power line environments and targeted analysis on national network services, the use of 0.7-3MHz bandwidth is determined so as to effectively reduce the system power consumption, the daily average power consumption is less than 281mw, and the national network requirements are completely met. Meanwhile, energy-saving and dynamic power consumption adjustment technologies from the mobile handheld terminal are integrated, and the power consumption of the product is reduced.
Wider frequency bands must lead to more spatial energy dissipation. But it is incorrect simply thought that the shorter transmission distance must result. The most critical factor affecting transmission distance is attenuation. Especially the signal attenuation caused by impedance change after a large number of electric loads are connected. In the working frequency band selected by the Haesi system, the impedance is stabilized at about 50 ohms, the time-varying characteristic is not obvious, and the attenuation problem caused by the impedance is effectively avoided. The frequency band below 1MH is reversely observed, the impedance is small, the signal transmission is not facilitated, or in order to achieve the same communication distance, larger transmitting power is needed, the PA/LD power amplification efficiency is low, and the transmission of the unrepeatered equipment exceeds 2000 meters through field actual measurement.
A large number of earlier experiments and researches show that the chip is stable and reliable in power consumption and transmission distance, advanced and prospective, and can meet the requirements of the system on field carrier communication.
Example 2
Collection fortune dimension system based on HPLC platform district, it includes that intelligence is joined in marriage and is become terminal, HPLC communication unit, collector, smart electric meter, central processing unit, electrical unit, intelligence is joined in marriage and becomes terminal and be connected with central processing unit through the power line, central processing unit includes storage unit, wireless communication unit, accumulate unit, central processing unit still is connected with HPLC communication unit through the power line, the inside carrier communication chip that is provided with of HPLC communication unit, the carrier communication chip realizes data modulation, demodulation and data transceiver function at the power line to be connected with central processing unit's wireless communication unit through the inside wireless communication module of carrier communication chip, HPLC communication unit has the collector through power line connection, the collector passes through the power line and is connected with smart electric meter and smart electric meter case.
The intelligent electric meter is provided with a meter end module, the meter end module reads basic information of the intelligent electric meter, the basic information comprises a user number, an electricity utilization address and a meter number, the meter end module is connected with a wireless communication unit of a central processing unit through a wireless communication device and sends the read basic information to the interior of the central processing unit, the central processing unit stores the information in a storage unit, and the information is compared and verified with received feedback information according to the stored information, so that the accurate positioning and data comparison of the intelligent electric meter are realized, the data comparison is carried out with the received information fed back by an HPLC communication unit, and the data information is synchronized to an intelligent distribution and transformation terminal; the number of the collectors is multiple, and according to feedback information sent by the HPLC communication unit, the collectors are used for collecting user numbers, power utilization addresses and meter numbers, using voltage, current and electric quantity generated by the intelligent ammeter and feeding data information back to a carrier communication chip of the HPLC communication unit; the Hi3911 chip is a Hua Hai Si Hi3911 chip, the Hi3911 chip comprises an ARM CPU subsystem, an MAC and PHY based on OFDM communication and an analog front end, the Hi3911 chip comprises a Hi3911T used for an electric meter and a Hi3911C used for a concentrator, and the Hi3911T chip integrates peripheral interfaces such as UART and GPIO; the Hi3911C integrated Ethernet controller realizes high-speed connection with the Ethernet through an MII interface; the HPLC communication unit is also connected with PAD-based mobile communication equipment of the operation and maintenance treasure operation software and the treasure reading and controlling software, and reliable, convenient and safe field debugging means are provided by using the treasure reading and controlling equipment; PAD-based operation software of the operation and maintenance device simplifies field operation and improves working efficiency; analyzing big data provided by software and giving intelligent analysis suggestions; and the central processing unit analyzes the data abnormity, including analysis of abnormal values of basic information of the intelligent electric meter, correction of abnormal quantity of electric quantity and line loss of the transformer area in part of areas, detection of electricity stealing, correction of electricity selling quantity and line loss of the transformer area, and synchronizes the information to the intelligent distribution transformer terminal.
The method adopts Hi3911 which is an HPLC power line carrier communication chip applied to power meter reading in Huanshisi, realizes the modulation, demodulation and data receiving and transmitting functions of data on the power line, provides a bidirectional, high-speed and real-time communication solution, solves the problem of higher power consumption of foreign carrier chips, and is suitable for the design specification of a national grid intelligent electric meter; the invention has the advantages of reliable operation and comprehensive functions.
Claims (6)
1. Collection fortune dimension system based on HPLC platform district, its characterized in that: it includes intelligent distribution transformer terminal, HPLC communication unit, collector, smart electric meter, central processing unit, electrical unit, intelligence distribution transformer terminal is connected with central processing unit through the power line, central processing unit includes memory cell, wireless communication unit, accumulate unit, central processing unit still is connected with HPLC communication unit through the power line, the inside carrier communication chip that is provided with of HPLC communication unit, carrier communication chip realizes the modulation, demodulation and the data transceiver function of data at the power line to be connected with central processing unit's wireless communication unit through the inside wireless communication module of carrier communication chip, HPLC communication unit is connected with the collector through the power line, the collector passes through the power line and is connected with smart electric meter and smart electric meter case, electrical unit is central processing unit, HPLC communication unit, the collector provides power.
2. The HPLC-based bench collection operation and maintenance system of claim 1, wherein: the utility model discloses a smart electric meter, including smart electric meter, the last table end module of installing of smart electric meter, table end module reads ammeter basic information, basic information includes the user number, power consumption address and table number, table end module passes through wireless communication device and central processing unit's wireless communication unit and is connected, send the basic information who reads inside central processing unit, central processing unit stores information in memory cell, compare and verify according to storage information and received feedback information, thereby realize smart electric meter accurate positioning and data contrast, carry out the data contrast with the information of received HPLC communication unit feedback, and with data information synchronization to intelligent distribution transform terminal.
3. The HPLC-based bench collection operation and maintenance system of claim 1, wherein: the number of the collectors is multiple, and according to feedback information sent by the HPLC communication unit, the collectors are used for collecting user numbers, electricity utilization addresses and meter numbers, using voltage, current and electricity generated by the intelligent ammeter and feeding data information back to a carrier communication chip of the HPLC communication unit.
4. The HPLC-based bench collection operation and maintenance system of claim 1, wherein: the carrier communication chip adopts a Hua Hai Si Hi3911 chip, the Hi3911 chip comprises an ARM CPU subsystem, an MAC and PHY based on OFDM communication and an analog front end, the Hi3911 chip comprises a Hi3911T used for an electric meter and a Hi3911C used for a concentrator, wherein the Hi3911T integrates peripheral interfaces such as UART, GPIO and the like; hi3911C integrates Ethernet controllers, and realizes high-speed connection with Ethernet through an MII interface.
5. The HPLC-based bench collection operation and maintenance system of claim 1, wherein: the HPLC communication unit is also connected with PAD-based mobile communication equipment of the operation and maintenance treasure operation software and the treasure reading and controlling software, and reliable, convenient and safe field debugging means are provided by using the treasure reading and controlling equipment; PAD-based operation software of the operation and maintenance device simplifies field operation and improves working efficiency; the big data provided by the software is analyzed and intelligent analysis suggestions are given.
6. An HPLC-bench-based collection operation and maintenance system as in claim 2, wherein: and the central processing unit analyzes the data abnormity, including analysis of abnormal values of basic information of the intelligent electric meter, correction of abnormal quantity of electric quantity and line loss of the transformer area in part of areas, detection of electricity stealing, correction of electricity selling quantity and line loss of the transformer area, and synchronizes the information to the intelligent distribution transformer terminal.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113285738A (en) * | 2021-05-24 | 2021-08-20 | 国网思极飞天(兰州)云数科技有限公司 | HPLC carrier module debugging system for smart electric meter |
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Patent Citations (4)
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| WO2015062104A1 (en) * | 2013-11-04 | 2015-05-07 | 国家电网公司 | Smart power utilization communications product testing system |
| CN108521289A (en) * | 2018-06-13 | 2018-09-11 | 南方电网科学研究院有限责任公司 | Power line carrier communication system |
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| CN113285738A (en) * | 2021-05-24 | 2021-08-20 | 国网思极飞天(兰州)云数科技有限公司 | HPLC carrier module debugging system for smart electric meter |
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