Method using hardware and functional method to divide power transformer composition

The risk of failure and status maintenance decision methods and other key issues in-depth study: ① power  electric meter  failure modes and effects analysis. Power transformer on the structure and function of depth and detailed analysis, based on the method of using a combination of hardware and functional method for power transformer  electri cenergy meter  is divided, and then the various components of all possible failure modes and effects of in-depth analysis, to avoid a complete according to the system structure failure mode and effects analysis of the complexity of the transformer reliability and fault risk assessment basis. ② based on multi-characteristic parameters of the power transformer fault probability comprehensive evaluation method.

Health and insulation transformer operating conditions determine

Power transformers are grid energy conversion, transmission core, is the power of the most important and one of the most critical equipment. Over the years, the health of the transformer and insulation determine operating conditions through preventive tests and regular electric transformer outage to achieve such status regardless of the actual operation of the transformer, "maturity required" maintenance mode, prone to "over-repair "and" less maintenance "state. Therefore, in the power system reliability and  mcb circuit breaker  request of the state instead of regular maintenance, repair power transformer maintenance mode has become an inevitable trend. In this paper, the power transformer failure modes and effects analysis, based on the respect of the reliability of the transformer fault probability of occurrence.

The basic theory of modern product design and technology is based on the knowledge-driven product design

Design is a highly intelligent man with creative activities, modern product design is based on the knowledge of the design. Knowledge-based new product competition in the 21st century technological core of the competition. Therefore, the knowledge-based engineering technology to the field of product design has important Electric energy meter  significance and practical value. The basic theory of modern product design is based on knowledge and technology-driven product design  oltage stabilizer  of the theoretical basis of systematic study. This article on the concept of knowledge, knowledge representation, knowledge acquisition and knowledge  power transformers such as artificial intelligence theory and issues related to the analysis and modern design techniques are described, the in-depth study of a knowledge-driven product design based on the architecture. Knowledge representation and reasoning system key technologies. Since the 19th century, since the advent of the transformer, has been 100 years of history. In the hundred years of history, as one of the important equipment power system power transformers, and power system development, but also gained rapid development.

With several volts to 100 volts high voltage conversion ratio of the boost converter

Piezoelectric actuator (piezoeieetric Actuator) because of its compact size and high resolution displacement is widely used in a variety of applications, especially in the smart phone / camera modules of the application more popular. The application of the mobile device, while the existing power supply is a low battery, but still high driving voltage driving the piezoelectric actuator in order to electric transformer performance mobile phone many applications, so it is necessary to use a few volts to 100 volts high voltage conversion ratio of the boost converter. Traditional boost DC to DC (DC a DC) converter or a boost converter is not suitable for electri cenergy meter  where a high voltage conversion ratio, since the boost inductor equivalent series resistance (ESR), disables the output  electric meter  is higher than the input voltage is increased by 10-fold above. This article describes the coupled inductors with high boost DC-DC converter, with an indication of its working principle and design considerations. There boost inductor equivalent series resistance continuous conduction mode voltage conversion ratio.

Intermodal interference stress measurement sensors have become an attractive method

Optical fiber sensor with high sensitivity, good reliability, anti-electromagnetic interference, corrosion resistance, high pressure, good electrical insulation properties and other characteristics, has become a research hotspot in the field of sensors. In recent years, based on polarization maintaining fiber mcb circuit breaker  interference principle of fiber optic sensor has been more attention, intermodal interference stress measurement sensors have become an attractive approach. With traditional arms interferometric fiber optic sensors,  Voltage stabilizer  interference sensors have better anti-interference ability and temperature stability, flexible structure can be used to design a variety of fiber optic sensors have been widely used in current and voltage measurements, the sound of water and water pressure measurement, stress measurement and so on.  circuit breakers  the conventional polarization maintaining fiber, polarization maintaining photonic crystal fiber (Polarization Maintaining Photonic Crystal Fiber, PM-PCF) has good temperature stability and higher sensitivity. In a certain wavelength range, polarization maintaining photonic crystal fiber to polarization-mode transmission line LP11 LP01 mode and even mode, these patterns after transmission in the fiber at the output of interference.

Widely used in fiber optic gyroscope, fiber polarization interferometer, and other areas of optical fiber sensing

Photonic crystal fiber (PCF) is a new type of special optical fiber cladding are arranged in periodic or random distribution of the air micrometer holes in the design and preparation of the PCF has a greater flexibility. Through the introduction of the core near the stress element, or adjust the air hole size and arrangement, can obtain a high birefringence PCF. With conventional polarization maintaining fiber (PMF), compared with high  electric meter  PCF higher sensitivity, better  air circuit breaker  stability, polarization maintaining better performance, etc., can be widely used in fiber optic gyroscope, fiber polarization interferometer, and other areas of optical fiber sensing . In this thesis, exploration and research of high birefringence PCF Modular Interference Characteristics of the optical voltage transformer in the application of optical current / voltage Voltage stabilizer  implementations provide a new idea. This paper describes a high birefringence birefringent PCF in principle and its application status in the sensing area, as well as domestic and optical voltage transformer basic working principle and its research development status, on this basis, analyzes the high double refraction between the PCF mode interference properties, and high birefringence PCF based Modular Interference optical voltage transformer conducted exploratory research.

Long-term distribution transformers in a "big horse car" state

Distribution transformers often serious overload operation: In the off-season electricity transformer load is low, and close to the transformer part-load operation, thus leading to a long-term  Voltage stabilizer  transformers in a "big horse car" state, making the transformer empty load losses relative increase, resulting in a large number of unnecessary power waste of resources. And the choice of "Mother and Child  air circuit breaker " will greatly increase investment. While many parts of the country without load transfer capacity distribution transformers, but power transformers of the electrician can not master the correct way to use volume adjustment function of distribution transformers in use has not been fully utilized. Load increases, the failure to adjust to large-capacity operation mode, adjust volume transformer burned frequent accidents.