Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

1 Investigation of Insulation Defects in UHV Oil - immersed ReactorsKey challenges in high - voltage oil - filled reactors during operation include insulation faults, iron - core magnetic leakage heating, vibration/noise, and oil leakage.1.1 Insulation FaultsParallel - connected reactors, once connected to the main grid’s primary coil and put into use, operate at full power long - term. Sustained high voltage raises operating temperatures, accelerating aging of coil insulation material

Reactors are key for reactive power compensation in power systems, with magnetically controlled reactors as a research focus. A smart grid, upgrading the traditional one via advanced tech, boosts safety and reliability, raising demands for controllable reactors. Thus, developing new - type ones matters. This paper, combining practice, explores their structural design and application to drive innovation and enhance smart grid construction.1 Functions and Application Status of Controllable Reactor

Classification of Reactors by Function (Main Applications)Reactors play a crucial role in power systems. One of the most common and important ways to classify them is by their function — that is, what they’re used for. Let’s take a closer look at each type in simple, easy-to-understand terms.1. Current-Limiting Reactors Series ReactorsThese reactors areconnected in serieswith the circuit — kind of like a speed bump in the electrical flow.Purpose: Increase

1 Vibration Monitoring and Fault Diagnosis Technology for High - Voltage Shunt Reactors1.1 Measuring Point Layout StrategyVibration characteristic parameters (frequency, power, energy) of high - voltage shunt reactors are fully recorded in operation logs. For vibration analysis, focus on resolving the complexity of electric field distribution at winding ends. Quantitatively evaluate field - strength distribution under operating/lightning overvoltage and voltage gradient characteristics of longit

1. IntroductionGrid electronic voltage transformers, as indispensable measuring components in power systems, have their measurement accuracy directly tied to the stable operation and efficient management of power systems. However, in practice, due to the inherent characteristics of electronic components, environmental factors, and limitations of measurement methods, the measurement results of voltage transformers often involve uncertainty. This uncertainty not only impacts the accuracy of power

1 Overview of EMC Performance of Electronic Voltage Transformers1.1 Definition & Requirements of EMCElectromagnetic Compatibility (EMC) denotes a device/system’s ability to operate undisturbed in a given electromagnetic environment and avoid causing unacceptable electromagnetic interference to other entities. For electronic voltage transformers, EMC demands stable measurement performance in complex settings, without interfering with other devices. Their EMC performance must be fact

In modern power systems, DC electronic current transformers play a crucial role. They are not only used for high-precision current measurement but also serve as key tools for grid optimization, fault detection, and energy management. With the rapid development of high-voltage direct current (HVDC) transmission technology and its widespread deployment globally, the performance requirements for DC current transformers have become increasingly stringent, especially in terms of measurement accuracy

1 Performance AdvantagesIn recent years, electronic current transformers (ECTs) have emerged as a key industry trend. National standards classify them into two types: Active Optical Current Transformers (AOCTs, active hybrid type) and Optical Current Transformers (OCTs, passive optical type). Active hybrid ECTs use low-power electromagnetic transformers and Rogowski coils as core sensing elements (Figure 1).Rogowski coils outperform traditional sensors with non-saturation and wide dynamic ranges

In real-world engineering projects, selecting and installing 35kV combined instrument transformers isn't just a matter of "buying and installing" — it requires a comprehensive evaluation of many factors, such as environmental conditions, equipment performance, and maintenance convenience. Only by taking all these aspects into account can we ensure that the equipment runs safely and stably for a long time under specific conditions.1. Oil-Immersed vs. Dry-Type Transformers — Wh

The installation quality of combined instrument transformers directly affects whether they can operate safely and stably. Therefore, during the installation process, several key aspects must not be overlooked — such as foundation construction, grounding, sealing checks, testing and commissioning, as well as secondary wiring. Below, I’ll explain these points in a more conversational way.1. Foundation Construction Must Be Solid, Especially in Plateau AreasAlthough a combined in