Power Control Using Preloaded Limits During Communication Failures
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Solution Overview
Problem
Power usage control in consumer facilities is challenging due to communication failures between servers and controlled equipment devices, leading to inadequate control over energy consumption.
Innovation Solution
A power control system comprising a control information generation server that sets and transmits limit values for each consumer's equipment devices across predetermined time periods, ensuring the total power usage does not exceed a target, and a control device that receives, stores, and enforces these limits to manage power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If real-time communication control is implemented between server and consumer facilities, then power usage can be dynamically adjusted to meet target power limits, but communication failures cause control disruptions and power limit violations
Solution Approach 1:
The patent applies preliminary action by having the server generate and transmit control information in advance before the control period begins. The control information includes predetermined power limits and control parameters that the consumer facility's control device will use during the control period. This advance preparation ensures that control instructions are available even if communication fails during the actual control period, thereby improving reliability without requiring complex real-time communication protocols.
2Reliability
If control information is transmitted in advance before each control period, then communication failures during control periods are mitigated, but storage requirements and data management complexity increase
Solution Approach 1:
The patent applies segmentation by dividing control information into discrete units corresponding to specific control periods. Each control information packet contains power limits and parameters for a predetermined time period, allowing the system to manage and transmit control data in manageable segments rather than as a continuous stream. This reduces the burden on storage and data management while ensuring reliable control execution.
3Power
If individual power reception amount reduction control is implemented at each consumer facility, then total power usage can be limited to target levels, but communication failures prevent appropriate control execution
Solution Approach 1:
The patent applies self-service by enabling the consumer facility's control device to autonomously execute power control based on pre-received control information. The control device automatically adjusts power reception amounts according to the predetermined limits and parameters included in the control information, without requiring continuous server communication or manual intervention. This maintains simple operation while ensuring power usage stays within target levels even during communication failures.
Data Source
AI summary
[Object] To control (limit) the power usage of a group including a plurality of consumers so as to reduce failures caused by communication between a server serving as a controller and a consumer facility to be controlled.[Solution] A power control system for performing power control such that a target power set for a group including a plurality of consumers is not exceeded includes a server 300 that generates control information, and a control device 100 that controls power usage of an equipment device 200 in accordance with the control information. The server 300 sets a limit value of power usage of each consumer in the group, generates control information including the limit value, and transmits, before a corresponding time period starts, the generated control information to the control device 100 that performs control. The control device 100 holds the received control information and controls, for each time period, power usage of an equipment device 200 of the consumer in accordance with control information for the time period within control information held in the storage unit 130.