Polyphase Power Dispatching System for Load Balance
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Solution Overview
Problem
In three-phase power systems, load unbalance among single-phase power transmission lines leads to energy loss and risks such as overlarge currents and power trip-offs due to varying power consumption and turned-on periods among load apparatuses.
Innovation Solution
A polyphase power dispatching system that includes an electric meter, an electricity storage module, and a switch controlled by a circuit to dynamically connect the electricity storage module to power transmission lines based on measured load status, balancing power distribution by selectively providing power from the storage module to lines with higher loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power generating terminal conforms to the highest load of each single-phase power to meet peak demand, then power supply reliability is improved, but load unbalance increases causing energy loss and current overload risks
Solution Approach 1:
An electricity storage module is introduced as an intermediary between the power generating terminal and the three-phase power system. This mediator absorbs excess power during low-demand phases and releases it during high-demand phases, thereby balancing the load without requiring the generating terminal to continuously conform to peak demand. The control circuit acts as another intermediary that manages the charging and discharging operations based on real-time transmission status measurements.
Solution Approach 2:
The system dynamically changes the operational parameters of the electricity storage module based on the transmission status of each phase. By measuring the transmission status and adjusting the charging/discharging rate accordingly, the system optimizes energy distribution in real-time, reducing energy loss while maintaining reliability.
2Adaptability or versatility
If single-phase load apparatuses operate with different power consumption and turned-on periods, then system adaptability is improved, but load unbalance among three-phase power increases
Solution Approach 1:
The control circuit continuously measures the transmission status of each phase through the electric meter and uses this feedback information to dynamically adjust the switch connections. This closed-loop control ensures that the electricity storage module charges or discharges in response to actual load conditions, maintaining load balance stability while accommodating varying single-phase load requirements.
Solution Approach 2:
The system transitions from a static power distribution configuration to a dynamic one where the switch selectively connects the electricity storage module to different phases based on real-time transmission status. This dynamic adjustment allows the system to adapt to changing load patterns while maintaining balance, resolving the contradiction between adaptability and stability.
3Stability of the object's composition
If the switch selectively connects the electricity storage module to power transmission lines with higher loads, then load balance is improved, but device complexity increases
Solution Approach 1:
The control system is segmented into distinct functional modules: an electric meter for measurement, a control circuit for decision-making, and a switch for execution. This segmentation allows each component to perform its specific function efficiently, reducing overall system complexity while achieving load balance through coordinated operation of these modular elements.
Data Source
AI summary
A polyphase power dispatching system and a polyphase power dispatching method are provided. The polyphase power dispatching system includes an electric meter, a single-phase electricity storage module, a switch and a control circuit. The electric meter can measure transmission statuses of power transmission lines of a polyphase power line group. The common terminal of the switch is connected to the single-phase electricity storage module. The selection terminals of the switch are connected to the power transmission lines in a one-to-one manner. The control circuit is connected to the electric meter and the switch. The control circuit can correspondingly control the switch based on the transmission status of each power transmission line, so that the switch selectively connects the single-phase electricity storage module to one of the power transmission lines.