Generator Field Winding Test Apparatus for Voltage Disturbance Simulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing test devices for electric power generators and systems are limited in their ability to test multiple generator systems and power distribution systems, particularly for faults such as voltage disturbances, without being intrusive and do not effectively simulate responses to various electrical conditions like voltage dips and reactive sharing failures.
Innovation Solution
A method and apparatus that measure and vary current and voltage applied to the field windings of generators, using sensors and processors to simulate voltage disturbances and test responses to conditions like voltage dips, over/under voltage, and kVAR sharing failures, while communicating with multiple generators to ensure synchronized testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional test devices are used for three-phase generators, then voltage disturbances can be generated, but the system cannot effectively test multiple generator systems and power distribution systems for faults like voltage dips and reactive sharing failures
Solution Approach 1:
The test device is designed to universally test multiple generator systems and power distribution systems by incorporating multiple output channels that can connect to different generators. The system can simulate various fault conditions including voltage dips, voltage swell, frequency deviations, and reactive sharing failures, making it applicable to diverse power generation configurations rather than being limited to single-generator testing.
Solution Approach 2:
The system varies multiple electrical parameters simultaneously across different output channels to simulate realistic fault conditions. By independently controlling voltage magnitude, frequency, and phase angle for each output channel, the device can recreate complex scenarios like voltage dips combined with reactive sharing failures, enabling comprehensive system reliability testing.
2Adaptability or versatility
If existing test apparatus are used, then some voltage disturbances can be simulated, but they are intrusive and do not effectively simulate responses to various electrical conditions like voltage dips and over/under voltage
Solution Approach 1:
The test device serves as an intermediary between the control system and the generator field windings. By injecting test signals through the automatic voltage regulator's field winding connection, the system can simulate voltage disturbances without directly injecting them into the power distribution system, thus avoiding intrusion while maintaining test effectiveness.
Solution Approach 2:
The system creates copies of actual fault conditions by measuring normal operating parameters and then reproducing distorted versions of these parameters during testing. For example, it measures normal voltage and current waveforms, then generates copies with introduced disturbances like voltage dips or swell, allowing realistic fault simulation without requiring actual fault occurrence.
3Productivity
If multiple generators are tested simultaneously, then comprehensive system testing is achieved, but synchronization and coordination become more complex
Solution Approach 1:
The test device merges multiple output channels into a single coordinated system controlled by one processor. All output channels share common voltage and current sensors, and the processor synchronizes the test signals across channels based on real-time system measurements, eliminating the need for separate synchronization systems for each generator channel.
Solution Approach 2:
The system continuously measures voltage and current from all generators through shared sensors and feeds this information back to the processor. The processor uses this feedback to dynamically adjust and synchronize test signals across multiple output channels, ensuring coordinated testing that responds to actual system conditions rather than operating in isolation.
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 comprehensive, non-intrusive testing of power generation systems by simulating and measuring responses to various electrical disturbances, enhancing fault detection and system stability assessment, including voltage dip ride-through and governor stability protection.
Implementation Method 1
measuring current and voltage applied to the field windings of generators, using sensors and processors
Implementation Method 2
The processor to varies at least one of the measured current and the measured voltage
Implementation Method 3
a field winding operable to control current generated by the generator by controlling current applied to the field winding
Data Source
AI summary
A method for testing a power generation system includes measuring current generated by a generator comprising a field winding operable to control current generated by the generator by controlling current applied to the field winding. Voltage output by the generator is measured. The measured current and the measured voltage are conducted to a processor connected to the generator. The processor to varies at least one of the measured current and the measured voltage. A field output of the processor is coupled to the field winding of the generator. A response of the power generation system to the varied measured current or measured voltage is determined.