EMS-PCS Command Feedback for Reliable Operation Status Tracking
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Solution Overview
Problem
In existing energy management systems, it is challenging for the Energy Management System (EMS) to ascertain whether the Power Conditioning System (PCS) is operating according to the initial control commands, as the PCS may change variables before the operation is completed, leading to unclear status updates.
Innovation Solution
The EMS transmits a SET command to instruct the PCS operation and a GET command to request its state, with the PCS responding with specific values indicating operation completion, release, or suspension, ensuring the EMS can determine the status accurately through the GET response command.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the PCS changes variables before operation completion to adapt to dynamic conditions, then the adaptability improves, but the reliability of status tracking deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the PCS sends status update notifications to the EMS whenever variable changes occur during operation. This includes transmitting information about operation status, variable changes, and completion states. The feedback loop ensures the EMS can track the actual state of the PCS in real-time, resolving the contradiction by maintaining reliable status tracking while allowing the PCS to adapt variables dynamically during operation.
Solution Approach 2:
The patent establishes preliminary communication protocols where the EMS sends control commands to the PCS with predefined parameters and expected outcomes. The PCS is instructed in advance about the operation to be performed and the variables that may change. This preliminary action framework allows the PCS to adapt during operation while the EMS maintains awareness of the intended vs. actual state, preserving reliability through预先 established communication channels.
2Measurement precision
If the PCS transmits frequent status updates to the EMS, then the measurement precision improves, but the loss of time increases
Solution Approach 1:
The patent implements periodic status update transmissions where the PCS sends information to the EMS at predetermined intervals or at specific operation milestones rather than continuously. The update frequency and timing are optimized to provide sufficient status precision for management decisions while minimizing communication overhead and time loss. This periodic action resolves the contradiction by balancing measurement precision with time efficiency.
Solution Approach 2:
The patent dynamically adjusts the status update parameters based on operation phase and criticality. During critical operation phases or when key variables change, the update frequency increases to maintain precision. During stable phases, updates are reduced to minimize time loss. The system adapts communication parameters (frequency, detail level) based on operational context, resolving the contradiction between precision and time efficiency.
Data Source
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AI summary
A management system includes an equipment and a management device. The management device includes a transmitter that transmits a first command to the equipment to instruct an operation of the equipment. The equipment includes a controller that controls an operation of the equipment according to the first command, and a transmitter that transmits a response command containing a property indicating a state of the equipment to the management device. A property of the first command includes a variable property indicating a variable that can be changed by an operation of the equipment. The controller keeps a variable indicated by the variable property without any change when the operation instructed by the first command is kept continuous. The transmitter provided in the equipment transmits the response command containing a specific value as the variable property to specify whether the operation is performed according to the first command.