Hybrid STATCOM with Energy Storage for Active Power Supply
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional STATCOMs cannot consistently supply active power to the power system due to the inability to store energy in capacitors, leading to instability in power transmission.
Innovation Solution
A power compensation apparatus comprising a converter, a capacitor, and a power storage system connected to renewable energy sources, which allows for the storage and supply of active power based on voltage and frequency measurements, enabling the apparatus to operate in various modes to stabilize power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional STATCOM uses a capacitor to store power, then reactive power can be compensated, but active power cannot be supplied to the power system
Solution Approach 1:
The patent combines a conventional STATCOM with a power storage system to create a hybrid power compensation apparatus. The power storage system (including battery, capacitor, or flywheel) is electrically connected to the STATCOM, enabling the merged system to simultaneously perform reactive power compensation and active power supply functions that were previously mutually exclusive.
Solution Approach 2:
The power compensation apparatus is designed to perform multiple functions: it can compensate for reactive power like a conventional STATCOM, supply active power to the grid when needed, and store excess power from renewable sources. This multi-functional capability allows a single system to address multiple power system needs simultaneously.
2Device complexity
If a conventional STATCOM cannot store energy in its capacitor, then the structure remains simple, but active power cannot be consistently supplied
Solution Approach 1:
The power compensation apparatus is divided into distinct functional modules: the STATCOM portion for reactive power compensation, the power storage system for active power supply and energy buffering, and control units for each subsystem. This segmentation allows the system to maintain relative simplicity while achieving enhanced functionality through coordinated operation of separate components.
3Productivity
If power transmission equipment is mounted in traditional locations, then power can be transmitted, but site security and NIMBY phenomena create difficulties
Solution Approach 1:
The power compensation apparatus can be deployed in diverse locations including offshore platforms, renewable energy plants, and urban areas with limited space. Its ability to perform multiple functions (reactive power compensation, active power supply, energy storage) in a single unit makes it adaptable to various installation environments without requiring traditional large-scale power transmission infrastructure.
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
The apparatus consistently supplies active power to the power system, stabilizing power transmission and reducing the need for continuous power generation, thereby enhancing system stability and reducing costs.
Implementation Method 1
a converter connected to the power system to convert power
Implementation Method 2
a capacitor connected to the converter and charged with active power of the power system or the power of the second system
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
A power compensation apparatus compensates for power of a power system to be allowed to transmit from at least one or more power sources to a load. The power compensation apparatus includes a first system connected to the power system to compensate for active power and reactive power of the power system, a second system connected to the first system to store power necessary for compensating for active power and reactive power, and a third system connected to the second system to generate the power to be stored in the second system.