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1. The remote metering circuit development of a new electric network control automatization system are presented in this dissertation.
2. Aiming at actual instance that the frequency of electric network is waving, based on twin-T resistance-capacitance active-trap filter, a trap filter which can filter the power interference between 49.
3. The basic technology of LV electric network control systems was investigated.
4. The communication network composition of LV electric network control systems and its application were also introduced.
5. Unbalanced throe phase currents widely exist in rural electric network and low-voltage power supply for urban buildings.
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6. The electric network voltage wave can be compensated automatically. The welding electric arc is stability.
7. The principle, constitution, chacteristic and uses of the electric network simulation device was introduced in this paper.
8. Urban Electric Network, development planning, key technology, construction standard, scale.
9. The node equation set of the electric network is solved on a microcomputer with sparse matrix technique.
10. As the terminal of an electric network, the distribution network is directly connected with the users.
11. At last the Rural Electric Network Alteration evaluation system is developed using the programming language Delphi.
12. As the important tache, substation is the main surveillant and manipulative point of the electric network.
13. Otherwise, the author discusses some key technology problems used in electric network programming.
14. In order to reduce its influence on grid voltage , the point of common coupling which has bigger short-circuit capability should be chosen when the stove is connected to electric network.
15. Multiplex rectifier is an important component for power electronics equipments to implement reducing the harmonic interference to electric network and improving power factor.
16. The power distribution network can be simplified as switch node network. By applying electric network graphic theory its adjacent node matrix and node information matrix can be derived.
17. Disclosed is a method and system for testing IC in wafer stage by using passive electric network.
18. Lower power factor and larger harmonic current of color monitor seriously pollute public electric network.
19. Finally supporting constructive reference aimed at the present construction of electric network.
20. The junction of more than two conductors in an electric network.
21. The ways of cancelling over voltage are setting up deceleration time, consumption of energy, feedback electric network brake and shared direct current bus bar soaking regenerated energy.
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