Dynamic Voltage Controller for Wind Farms
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Solution Overview
Problem
Non-synchronous power generation plants, such as wind farms, face challenges in dynamically controlling voltage and reactive power at the Point of Interconnection (POI) within a power grid, often requiring expensive reactive power compensation equipment and resulting in electrical power losses.
Innovation Solution
A dynamic voltage and reactive power controller is integrated across multiple power generation sources, including offshore wind farms and onshore substations, to optimize voltage and reactive power production at the POI, minimizing the need for expensive compensation equipment and reducing power losses by prioritizing reactive power usage from wind turbines and electrical substations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reactive power compensation equipment (SVC, STATCOM, synchronous condensers) is used to meet voltage and power factor requirements at POI, then voltage control capability and power factor compliance are improved, but system cost and device complexity increase significantly
Solution Approach 1:
The patent combines wind turbines and electrical substations into a single integrated control system managed by one controller. The controller dynamically coordinates reactive power output from wind turbines with transformer taps and reactive power compensation equipment at the substation to collectively meet POI voltage and power factor requirements, eliminating the need for oversized dedicated compensation equipment.
Solution Approach 2:
The integrated control system makes wind turbines and substation equipment perform multiple functions: wind turbines provide both active power generation and dynamic reactive power support, while the substation transformer provides both power transformation and additional reactive power compensation through tap changers. This multi-functionality reduces the need for specialized compensation equipment.
2Power
If supplemental reactive power compensation equipment is deployed to overcome limited capabilities of wind turbines and transmission lines, then reactive power capability at POI is improved, but electrical power losses increase
Solution Approach 1:
The controller continuously monitors system conditions and proactively adjusts reactive power output from wind turbines and substation equipment before voltage or power factor violations occur at the POI. This preventive control minimizes the need for high-capacity compensation equipment and reduces reactive power circulation losses in transmission lines.
Solution Approach 2:
The system dynamically changes operating parameters including wind turbine reactive power output, transformer tap positions, and compensation equipment settings based on real-time measurements of POI voltage and power factor. This dynamic parameter adjustment optimizes reactive power delivery efficiency and minimizes transmission losses.
3Ease of operation
If wind turbines and substations are controlled separately with duplicate functionality, then individual component control is simplified, but overall system efficiency decreases and costs increase
Solution Approach 1:
The patent merges control of wind turbines and substation into a single unified control system. One controller receives measurements from both sources and coordinates their reactive power output collectively, eliminating duplicate control functionality while improving overall system efficiency through coordinated operation.
Data Source
AI summary
Systems and methods for improved anomaly detection for rotating machines. An example method may include determining that power generation is to be performed based on a voltage instead of a power factor; receiving a command voltage; receiving a measured voltage value from a first location in a power generation network; determining that the measured voltage value from the first location is less than the command voltage value; determining that a current value associated with a transmission line at the third location is less than a threshold current value; determining that a reactive power of a power generation component at a third location is less than a maximum reactive power of the component; and increasing, based on the determination that the reactive power of the component at the third location is less than a maximum reactive power of the component, the reactive power of the component.