HEMS Control Device for Gas Power-Generator Startup Reliability
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Solution Overview
Problem
During power outages, gas power-generators fail to start up due to the requirement of start-up power for heaters and auxiliary machines, leading to a disruption in power supply.
Innovation Solution
A control device and system that includes a power detection unit, control unit, and storage battery to ensure the gas power-generator receives the necessary start-up power by prioritizing power supply from photovoltaic cells and storage batteries, and adjusting the operation schedule of loads to maintain power generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the gas power-generator requires start-up power to start up heater and auxiliary machines, then the power generation can be started, but the power supply means cannot supply sufficient power during power outage
Solution Approach 1:
The control device performs preliminary detection of supply power capability from photovoltaic cells and storage battery before the power outage occurs. This advance preparation ensures that when power outage happens, the system already knows whether sufficient power is available for the gas power-generator startup, allowing proactive decision-making rather than reactive failure.
Solution Approach 2:
The control device continuously monitors and detects the supply power from power supply means in real-time. This feedback mechanism allows the system to dynamically adjust operations based on available power levels, ensuring that when power outage occurs, the control device can accurately assess whether the supply power meets the start-up power requirement and take appropriate actions.
2Power
If the gas power-generator stops power generation during power outage, then the system avoids insufficient power supply, but the load cannot receive necessary power
Solution Approach 1:
The control device detects supply power capability in advance before power outage occurs and makes preliminary determination about whether independent operation can be maintained. This preliminary assessment prevents unnecessary shutdowns when power is sufficient and avoids insufficient power supply when power is limited, optimizing the power supply strategy proactively.
Solution Approach 2:
The control device dynamically changes the operational state of the gas power-generator based on detected supply power parameters. When supply power is sufficient, the generator operates normally; when supply power becomes insufficient during outage, the control device adjusts or stops operation. This parameter-based dynamic control resolves the contradiction between maintaining power supply and avoiding insufficient power conditions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the gas power-generator to start and maintain power generation during outages by ensuring a stable supply of start-up power, allowing for continuous operation of critical loads.
Implementation Method 1
a photovoltaic cell (PV) and a gas power-generator are widely used
Implementation Method 2
a storage battery is introduced, in the consumer, for charging power from a power system during night time
Implementation Method 3
a household fuel cell using city gas or propane gas
Data Source
AI summary
An HEMS 700 provided in a consumer having a gas power-generator 220 requiring start-up power for starting power generation and power supply means (PV 100, storage battery 200, PCS 400, distribution board 500) for supplying power to a load 300, and controlling the gas power-generator 220 and the power supply means, detects supply power that can be supplied by the power supply means; and controls the power supply means such that the supply power does not fall below the start-up power of the gas power-generator 220.