RS485 electric meter power failure alarm reporting method based on timing broadcast strategy

Abstract

The invention discloses an RS485 electric meter power failure alarm reporting method based on a timing broadcast strategy, and relates to a power failure alarm reporting method. At present, an RS485 mode is a simplex and duplex mode, so that an intelligent meter cannot initiate event reporting actively, and a large number of meter power failure event are missed and reported belatedly. The method comprises the following steps: 1) carrying out timing polling, wherein the II-type concentrator broadcasts and sends a 'power failure state inquiry' message at regular time; the II-type concentrator isoperated in a meter reading gap period, and starts to initiate timing rotation training when the meter reading is finished on that day or when more than one time period is exceeded; 2) carrying out bus monitoring; 3) reporting a single-meter power failure event; and 4) reporting an RS485 conflict processing event. According to the technical scheme, a specific timing broadcast strategy of the II-type concentrator is adopted, the super capacitor is used, the gap period and the calling characteristic after meter reading of the II-type concentrator are effectively utilized to the maximum extent,the problem of active reporting of the RS485 intelligent meter is solved, and the accuracy and the real-time performance of a power failure event of the RS485 intelligent meter are greatly improved.

Description

technical field [0001] The invention relates to a method for reporting a power failure alarm, in particular to a method for reporting a power failure alarm of an RS485 electric meter based on a timing broadcast strategy. Background technique [0002] With the rapid development of power technology and the acceleration of informatization, the world is deeply promoting the optimization of energy structure and realizing a new round of transformation of energy strategy. Smart grid has become an important trend in the development of international power. The acquisition system has always provided a large amount of business and data support in supporting the operation and management of the distribution network, and plays an important role in the business application of power outage analysis. [0003] So far, State Grid Corporation has optimized the software and hardware architecture of smart meters, standardized the processing and reporting process of power outage events, and realiz...

AI Technical Summary

Problems solved by technology

However, the State Grid currently has a large number of RS485 smart meters with downlink communication methods. For example, the State Grid Zhejiang Company has nearly 26 million RS485 smart meters, of which the number of RS485 smart meters under the Type II concentrator is about 16 million, because the RS485 method is single Due to the duplex mode, smart meters cannot actively initiate event reporting, resulting in a large number of missed and delayed reports of power outage events; the accuracy and real-time performance of RS485 smart meter power outage events need to be improved

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