Wind Plant Active Power Curtailment for Reactive Power Compliance
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Solution Overview
Problem
Wind power plants face challenges in meeting grid code requirements for reactive power due to equipment faults or communication breakdowns, leading to potential disconnection from the grid and financial penalties.
Innovation Solution
A method and system for controlling active power generation in wind power plants, which involves monitoring the operational status of compensation equipment, adjusting reactive power capability, and curtailing active power output based on the adjusted capability to ensure compliance with grid codes, using a power plant controller and compensation modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reactive power compensation equipment (STATCOM, SVC, MSC) is used to meet grid code requirements, then reactive power capability is improved, but device complexity and cost increase
Solution Approach 1:
The wind power plant uses its own active power generation capability to provide reactive power support instead of relying on external compensation equipment. By controlling the active power output of wind turbines, the plant can inherently meet grid code requirements without additional STATCOM, SVC, or MSC devices.
Solution Approach 2:
The method dynamically adjusts the active power generation parameter of the wind power plant based on grid code requirements and operational status. By changing the active power output parameter, the plant can control its reactive power capability to comply with grid codes, eliminating the need for complex compensation equipment.
2Reliability
If reactive power compensation equipment is installed to ensure grid code compliance, then power factor control is improved, but loss of time for fault response increases
Solution Approach 1:
The control method continuously monitors the operational status of compensation equipment and provides feedback to the active power control system. When a fault is detected in compensation equipment, the system immediately adjusts active power generation to maintain grid code compliance, eliminating the time delay associated with fault response.
Solution Approach 2:
The system pre-establishes control strategies that use active power generation as the primary means of meeting grid code requirements. This preliminary arrangement ensures that when compensation equipment fails, the wind power plant can immediately maintain compliance through active power adjustment without needing to respond to the fault in real-time.
3Reliability
If active power curtailment is implemented to maintain reactive power capability, then grid code compliance is improved, but productivity decreases
Solution Approach 1:
The method dynamically determines the curtailment amount based on the operational status of compensation equipment and current grid code requirements. Rather than fixed curtailment, the system adjusts active power output in real-time to maintain the optimal balance between productivity and compliance, minimizing unnecessary energy loss.
Solution Approach 2:
The system changes the active power generation parameter dynamically based on compensation equipment status. When compensation equipment is faulty, the plant adjusts active power output to a level that ensures grid code compliance while maximizing productive output within the constrained reactive power capability.
Data Source
AI summary
In various embodiments of the present disclosure, there is provided a method of controlling active power generation of a wind power plant coupled to a power grid, the wind power plant including a power plant controller for controlling a plurality of wind turbine generators. In an embodiment, the method includes monitoring an operational status of a plant compensation equipment and adjusting a plant reactive power capability when the operational status of the plant compensation equipment indicates a fault in the plant compensation equipment. According to an embodiment, the method includes controlling the wind power plant to curtail the active power generated by the wind power plant by a curtailment amount determined based on the adjusted plant reactive power capability. A corresponding wind power plant is further provided.