Capacitive Voltage Estimation for Aging Live Electrical Elements
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Solution Overview
Problem
Existing methods for estimating the voltage of live electrical elements fail to maintain accurate and safe measurements over time due to aging components, require costly and difficult maintenance, and can only be repaired when the element is not live, necessitating specialized workers.
Innovation Solution
A system and method using a network of capacitors connected to a live element, allowing voltage estimation through detecting voltage values at specific points along connected wires, with capacitors subjected to the same environmental conditions to maintain accuracy over time, enabling simple and inexpensive maintenance by non-specialized workers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If known methods and systems are used for estimating voltage, then voltage measurement is initially possible, but measurement precision deteriorates over time due to aging of electrical components
Solution Approach 1:
The invention uses capacitive dividers that create proportional voltage copies of the live element voltage. By measuring voltage at intermediate points through capacitive coupling rather than direct contact, the system creates a scaled-down representation that can be safely and accurately measured without being affected by aging of traditional measurement components
Solution Approach 2:
The invention replaces traditional mechanical/electrical contact-based voltage measurement systems with a capacitive coupling system. This substitution eliminates wear and aging issues associated with physical contacts and electrical components, maintaining measurement precision over time through non-contact capacitive sensing
2Reliability
If traditional voltage measurement systems are used, then voltage can be measured, but maintenance becomes difficult and costly over time
Solution Approach 1:
By creating a capacitive copy of the voltage signal at safe measurement levels, the system allows maintenance personnel to work with low-voltage replicas rather than high-voltage originals, making maintenance safer and easier to perform
Solution Approach 2:
The capacitive dividers act as intermediaries between the high-voltage live element and the measurement/maintenance equipment. This intermediary layer protects maintenance personnel and equipment from high voltage while still providing accurate measurement capability
3Ease of repair
If conventional measurement systems are used, then voltage measurement is possible, but repair operations can only be performed when the element is not live
Solution Approach 1:
The capacitive coupling system serves as an intermediary that enables safe measurement and maintenance operations on live elements. The capacitive dividers isolate the high voltage while transmitting measurement signals, allowing repairs to proceed without shutting down the system
Solution Approach 2:
By creating a safe voltage copy through capacitive division, the system allows maintenance personnel to perform repairs on live elements by working with the scaled-down voltage replica rather than the full high voltage, eliminating the need for system shutdown
4Measurement precision
If traditional voltage estimation methods are used, then voltage measurement can be performed, but specialized workers are required for maintenance
Solution Approach 1:
The capacitive voltage division creates a safe, scaled-down copy of the voltage signal that can be measured and maintained by non-specialized workers. The measurement system works with low-voltage replicas rather than high-voltage originals, removing the need for specialized high-voltage training and equipment
Solution Approach 2:
The capacitive dividers act as intermediaries that translate high-voltage measurement tasks into low-voltage operations. This intermediary function allows standard measurement equipment and non-specialized personnel to perform tasks that traditionally required specialized high-voltage expertise
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
Ensures accurate and safe voltage estimation of live elements over time with reduced maintenance needs, allowing repairs on live elements and simplifying maintenance procedures.
Implementation Method 1
a first capacitor C1.sx comprising a respective first pole C1.sx.p1 and a second pole C1.Sx.p2; a second capacitor C1.dx comprising a respective first pole C2.dx.p1 and a second pole C2.dx.p2; a third capacitor C2.sx comprising a respective first pole C2.sx.p1 and a second pole C2.sx.p2
Data Source
AI summary
A method and a system for estimating the value of the voltage relating to an element under voltage ET. The system comprises alive element ET, a first capacitor C1.sx, a second capacitor 01.dx, a third capacitor 02.sx, a fourth capacitor 02.dx, a fifth capacitor CS.dx. The method involves the use of the electrical values obtained through this system.