CN-122001750-A - Ammeter data acquisition site problem analysis method and system

CN122001750ACN 122001750 ACN122001750 ACN 122001750ACN-122001750-A

Abstract

The application discloses a method and a system for analyzing problems of an ammeter data acquisition site, which belong to the field of ammeter operation and maintenance, wherein the method comprises the steps of receiving a first message sent by a concentrator in real time through a first serial port, and forwarding the first message to a CCO module through a second serial port when the first message is received; receiving a second message sent by the CCO module in real time through a second serial port, and forwarding the second message to the concentrator through the first serial port when the second message is received; analyzing the first message or the second message by a cyclic redundancy check method, and positioning faults according to the messages with errors when any one of the first message or the second message has errors. Therefore, by implementing the application, the problem of precisely positioning the fault position on the premise of not influencing the normal communication of the system can be solved.

Inventors

GU HAITONG
WU XIAOQIANG
KONG LU
GUAN PEIHONG
LI CHENGQIAN
Zhuo Qinhan
GUO BIN
DONG JUN
FENG XINGXING

Assignees

广东电网有限责任公司广州供电局

Dates

Publication Date: 20260508
Application Date: 20260202

Claims (10)

1. The method is characterized by being applied to a field problem analysis device, wherein the field problem analysis device comprises a first serial port and a second serial port, the field problem analysis device is connected with a concentrator through the first serial port, the field problem analysis device is connected with a CCO module through the second serial port, and the field problem analysis method comprises the following steps: receiving a first message sent by the concentrator in real time through the first serial port, and forwarding the first message to the CCO module through the second serial port when the first message is received; receiving a second message sent by the CCO module in real time through the second serial port, and forwarding the second message to the concentrator through the first serial port when the second message is received; analyzing the first message or the second message by a cyclic redundancy check method, and positioning faults according to the message with errors when any one of the first message or the second message has errors.
2. The method of claim 1, wherein the field problem analysis device further comprises a first network port and a first carrier communication interface, the field problem analysis device is connected with an upper computer through the first network port, the field problem analysis device is connected with the CCO module through the first carrier communication interface, and the field problem analysis method further comprises: receiving a first instruction sent by the upper computer in real time through the first network port, and when the first instruction is received, issuing a second instruction to the CCO module through the first carrier communication interface according to the first instruction, wherein the second instruction is generated according to the first instruction package; and receiving the carrier signal acquired and returned by the CCO module according to the second instruction in real time through the first carrier communication interface, and returning the carrier signal to the upper computer through the first network port after receiving the carrier signal, so that the upper computer acquires the ammeter data according to the carrier signal.
3. The method for analyzing field problems of ammeter data acquisition according to claim 2, wherein the field problem analyzing device further comprises a wireless communication module, and the field problem analyzing method further comprises: When the first instruction is received, if the power line interference signal exceeds a preset threshold, a second instruction is issued to the CCO module through the wireless communication module, and the carrier signal acquired and returned by the CCO module according to the second instruction is received through the wireless communication module, so that the upper computer acquires ammeter data according to the carrier signal.
4. The method of claim 2, wherein the field problem analysis device further comprises a zero-crossing detection module, wherein the zero-crossing detection module is connected to the first carrier communication interface, and wherein the field problem analysis method further comprises: Detecting, by the zero-crossing detection module, a zero-crossing signal in a carrier signal received from the first carrier communication interface, to perform phase identification based on the zero-crossing signal.
5. The method for analyzing field problems of data collection of an electric meter according to claim 1, wherein said first message and said second message each comprise a verification character, and wherein said analyzing said first message or said second message by a cyclic redundancy check method comprises: if the initial character or the final character of any message in the first message or the second message is not the corresponding preset character, determining that the message has errors; And calculating the cyclic redundancy check values of the first message and the second message, and if the cyclic redundancy check value of any one message in the first message or the second message is different from the corresponding verification character, determining that the message has errors.
6. The field problem analysis system for the ammeter data acquisition is characterized by being applied to a field problem analysis device, wherein the field problem analysis device comprises a first serial port and a second serial port, the field problem analysis device is connected with a concentrator through the first serial port, and the field problem analysis device is connected with a CCO module through the second serial port; The first message transceiver module is configured to receive, in real time, a first message sent by the concentrator through the first serial port, and when the first message is received, forward the first message to the CCO module through the second serial port; the second message transceiver module is configured to receive, in real time, a second message sent by the CCO module through the second serial port, and forward, when the second message is received, the second message to the concentrator through the first serial port; the message analysis module is used for analyzing the first message or the second message through a cyclic redundancy check method, and positioning faults according to the message with errors when any one of the first message or the second message has errors.
7. The electricity meter data acquisition field problem analysis system of claim 6, wherein the field problem analysis device further comprises a first network port and a first carrier communication interface, wherein the field problem analysis device is connected with an upper computer through the first network port, and wherein the field problem analysis device is connected with the CCO module through the first carrier communication interface; The first instruction issuing module is used for receiving a first instruction sent by the upper computer through the first network port in real time, and issuing a second instruction to the CCO module through the first carrier communication interface according to the first instruction when the first instruction is received, wherein the second instruction is generated according to the first instruction package; The ammeter data reading module is used for receiving the carrier signals acquired and returned by the CCO module according to the second instruction in real time through the first carrier communication interface, and returning the carrier signals to the upper computer through the first network port after the carrier signals are received, so that the upper computer acquires ammeter data according to the carrier signals.
8. The electricity meter data collection site problem analysis system of claim 7, wherein the site problem analysis device further comprises a wireless communication module, the site problem analysis system further comprises a second instruction issuing module; And the second instruction issuing module is used for issuing a second instruction to the CCO module through the wireless communication module when the first instruction is received and if the power line interference signal exceeds a preset threshold value, and receiving the carrier signal acquired and returned by the CCO module according to the second instruction through the wireless communication module, so that the upper computer acquires ammeter data according to the carrier signal.
9. The electricity meter data collection field problem analysis system of claim 7, wherein the field problem analysis device further comprises a zero crossing detection module, a phase identification module, a first carrier communication interface and a second carrier communication interface, wherein the zero crossing detection module is connected with the first carrier communication interface; The phase identification module is used for detecting a zero crossing signal in the carrier signals received from the first carrier communication interface through the zero crossing detection module so as to carry out phase identification according to the zero crossing signal.
10. The system of claim 6, wherein the first message and the second message each include a verification character, the message analysis module includes a first judgment unit and a second judgment unit, and the message analysis module is configured to analyze the first message or the second message by a cyclic redundancy check method, and includes: The first judging unit is configured to determine that an error exists in the message if the start character or the end character of any one of the first message or the second message is not a corresponding preset character; the second judging unit is configured to calculate a cyclic redundancy check value of the first message and the second message, and determine that an error exists in the message if the cyclic redundancy check value of any one of the first message or the second message is different from the corresponding verification character.

Description

Ammeter data acquisition site problem analysis method and system Technical Field The application relates to the field of ammeter operation and maintenance, in particular to an ammeter data acquisition field problem analysis method and system. Background Along with the wide application of intelligent ammeter and low-voltage distribution network, the electric energy metering system comprises a large number of ammeter, concentrators, communication modules and other devices, and the devices construct a communication network in a carrier wave or wireless mode. However, in the field operation process, the problems of data reading incapability, communication interruption, meter reading delay and the like often occur under the influence of factors such as power line interference, communication link attenuation, module configuration errors and the like. Therefore, fault problem analysis is required for the ammeter data acquisition site. In the prior art, field engineering personnel usually rely on state indication of concentrator equipment or error information of an upper computer to judge whether communication is abnormal, but such means can only determine the existence of communication faults, and cannot further judge whether the problem is originated from a concentrator, a CCO module or a communication link. In addition, when the field problem analysis is performed, the original communication link is often required to be interrupted, and the analysis equipment is directly replaced by the concentrator module to perform detection, so that the data transmission is interrupted, the operation is complex, and the field service continuity is affected. Therefore, how to accurately locate the fault location without affecting the normal communication of the system is a technical problem to be solved at present. Disclosure of Invention The application provides an ammeter data acquisition field problem analysis method and system, which can solve the problem of how to accurately position a fault position on the premise of not influencing normal communication of a system in the prior art. The application provides an ammeter data acquisition field problem analysis method which is applied to a field problem analysis device, wherein the field problem analysis device comprises a first serial port and a second serial port, the field problem analysis device is connected with a concentrator through the first serial port, the field problem analysis device is connected with a CCO module through the second serial port, and the field problem analysis method comprises the following steps: receiving a first message sent by the concentrator in real time through the first serial port, and forwarding the first message to the CCO module through the second serial port when the first message is received; receiving a second message sent by the CCO module in real time through the second serial port, and forwarding the second message to the concentrator through the first serial port when the second message is received; analyzing the first message or the second message by a cyclic redundancy check method, and positioning faults according to the message with errors when any one of the first message or the second message has errors. Compared with the prior art, the embodiment has the following beneficial effects that the first serial port and the second serial port are respectively and independently connected with the concentrator and the CCO module in the field problem analysis device, so that real-time monitoring and bidirectional forwarding of the message are realized, and the communication process is monitored transparently under the condition of not interfering the original communication link of the system. And further, carrying out integrity detection on the first message and the second message transmitted between the concentrator and the CCO module in a cyclic redundancy check mode, and when the message is found to have errors, accurately positioning a fault link directly according to the abnormal message. According to the application, real-time analysis of the data link can be completed without disassembling equipment or interrupting communication, so that the accuracy and efficiency of on-site problem diagnosis are effectively improved, the manual intervention and investigation time is reduced, and the stable and reliable operation of the ammeter data acquisition system in a complex power environment is ensured. Further, the field problem analysis device further comprises a first network port and a first carrier communication interface, the field problem analysis device is connected with an upper computer through the first network port, the field problem analysis device is connected with the CCO module through the first carrier communication interface, and the field problem analysis method further comprises the following steps: receiving a first instruction sent by the upper computer in real time through the first network port, and when the f