A remote monitoring method and system for smart grid user load status
A load status and remote monitoring technology, which is applied in the direction of measuring electricity, measuring devices, and measuring electrical variables, etc., can solve complex and difficult problems such as waiting delays, reduce average information age, reduce algorithm complexity, and meet freshness requirements Effect
Active Publication Date: 2022-04-12
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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Problems solved by technology
However, how to determine the waiting delay faces many challenges
First of all, user load is a dynamic process, and its state data changes with time. In the same time interval, its state changes are inconsistent. Therefore, the waiting delay should also change with the change of user load state. Secondly, the network transmission delay is also a dynamic process. The transmission delay experienced by different sequence numbers of user load status information on the communication network is also different, and the transmission delay experienced by different sequence numbers of confirmation information on the communication network is also different. , the dynamic change of network transmission delay makes the problem of how to obtain the waiting delay of the next load status update information more complicated and difficult to solve
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[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only It is a part of the embodiments of this application, not all of them.
[0031] Such as figure 1 As shown, the steps of the remote monitoring method for smart grid user load status in this embodiment include:
[0032] S01: The low-voltage centralized reading terminal updates the serial number of the user's load status to i+1, wherein the natural number i≥1 represents the serial number before the update, and proceeds to step S02;
[0033] S02: The low-voltage centralized reading terminal collects the user load status at the current moment Among them, S i Indicates the current moment, and will collect the time S ...
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The invention provides a method for remotely updating user load status. The present invention uses the user load state received by the monitoring center as the user load state in the time period between the current moment and the next user load state received so that the monitoring center does not need to use forecasting or statistical methods to predict non-state information updates The user load status of the time period; by controlling the waiting delay before sending each status update of the low-voltage centralized reading terminal, the mean square error of the remote estimation of the user load status change is minimized, and by combining the waiting delay with the current user load status information and The network transmission delay of the confirmation information and the expected collection time interval under the constraint of the user load state change threshold are dynamically correlated to reduce the freshness requirement of the user load state information.
Description
technical field [0001] The invention relates to the field of user load status monitoring, in particular to a remote monitoring method and system for user load status of smart grids. Background technique [0002] The status monitoring of electricity load of users in low-voltage station area is an important business of smart grid. Real-time monitoring of user loads can not only improve the reliability of the power distribution system and ensure the continuity of power supply; it can also improve the management efficiency of the system and reduce operating costs. The traditional monitoring system generally sends the user load status collected by the low-voltage centralized reading terminal to the remote monitoring center periodically at fixed time intervals. With the diversification and expansion of smart grid business, the number of low-voltage centralized reading terminals is increasing, and the information data of low-voltage power load status is growing explosively. Massi...
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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 罗鸿轩魏龄肖勇韩彤金鑫李博
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD