Prospects for the development of China's electrical industry

2009 was a difficult year for China's economy, 2010 was a complex year for China's economy, and 2011 is still continuing this complex situation. Because 2011 and 2012 are years of China's economic transformation. Wu Xiaoqiu, director of the Institute of Finance and Securities of Renmin University of China and a well-known economist, said when predicting China's macroeconomic trends in 2011. In the first year of the 12th Five-Year Plan, for the electrical industry, power grid construction will become the focus of power investment in 2011. At the same time, related smart grid construction, rural power grid transformation, UHV power grid construction, the electrical industry in this

China's high and low voltage electrical products sales market is mainly in the domestic

With the investment in new energy industry, high-tech industry, advanced equipment manufacturing industry and real estate development has accelerated significantly, and the demand for industrial power distribution automation and civil power distribution intelligence has increased, the market prospect of complete sets of high and low voltage electrical equipment is broad. Industry analysts pointed out: in recent years, high and low voltage electrical equipment is widely used in modern industrial enterprises, new energy development and real estate construction and many other fields of power matching, product production and sales situation is good. With the continuous growth of power grid construction investment projects, as well as the increase in demand for railway electrification and urban rail transit construction, the industry will also usher in a broader market. Our country

Thoroughly dissecting the detailed structure of the three-phase asynchronous motor

Motor accessories refer to the original parts of the motor assembled by the motor manufacturer. The parts that are damaged and replaced due to improper use or wear are called motor accessories. The classification of motor accessories can be classified according to the components of the motor, which can be roughly divided into motor stator, motor rotor, stator winding, motor housing, end cover, motor fan blade, bearing and other parts.

Distinguishing Judgment Method and Solution of Three-phase Voltage Unbalance

Disconnection fault If one phase is disconnected but not grounded, or one phase of circuit breaker and isolating switch is not connected, the fuse of voltage transformer will cause asymmetry of three-phase parameters. When one phase of the previous voltage level line is broken, the voltage of the next voltage level shows that the voltages of the three phases are all reduced, one of which is lower, the other two are higher, but the voltage values of the two are close. When the line of this stage is broken, the broken phase voltage is zero, and the unbroken phase voltage is still the phase voltage.

Using SVR line automatic voltage regulator to solve the low voltage problem of 10kV line

In view of the "low voltage" problem of rural power grid lines, the current countermeasures are mainly as follows: new conductor cross-sectional area; Adjust the substation main transformer tap to change the system voltage; Reasonable distribution of reactive power compensation equipment in the system to improve the reactive power flow distribution of the power grid; Transform the line to increase the load of the pumping station; Increase the number of outgoing lines in the substation to share the load of the original line.