Intensive direct current (DC) ice-melting device protection, measurement and control system
A DC ice melting, protection measurement and control technology, applied in circuit installations, overhead installation, cable installation and other directions, can solve problems such as power grid impact, lack of protection measurement and control system, equipment damage, etc., to achieve fast response and ensure safe operation.
Active Publication Date: 2018-11-27
STATE GRID HUNAN ELECTRIC POWER +2
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Problems solved by technology
However, the output characteristics and corresponding protection requirements of the device are quite different under each working condition, and the conventional protection device cannot meet the protection requirements of the intensive DC deicing device
[0003] Due to the long-term operation of the intensive DC deicing device in a high-voltage, high-current environment, due to the lack of a complete protection measurement and control system, once the device fails, it is very easy to cause equipment damage and even have a large impact on the power grid
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[0019] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in a variety of different ways defined and covered by the claims.
[0020] An intensive DC ice melting device protection measurement and control system, used to protect the measurement and control intensive DC ice melting device, see figure 1 , Intensive DC ice melting device includes ice melting power circuit breaker 5, ice melting rectifier transformer 2, reactive power compensation component connecting circuit breaker 6, reactive power compensation and active filter component 3, rectifier component 4, ice melting power circuit breaker 5 It is connected to the external AC bus and the ice melting rectifier transformer 2. The ice melting rectifier transformer 2 is connected to the rectifier component 4 and the reactive power compensation component connected to the circuit breaker 6, and the reactive power compen...
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The invention discloses an intensive direct current (DC) ice-melting device protection, measurement and control system in the field of electrical engineering. The system is used for protecting intensive DC ice-melting devices including an ice melting power circuit breaker, an ice melting rectifier transformer, a reactive power compensation component connection circuit breaker, a reactive power compensation and active filtering component and a rectifier component. The protection, measurement and control system comprises a transformer component protection subsystem connected with the ice meltingrectifier transformer and the ice melting power circuit breaker, a rectifier component protection subsystem connected with the rectifier component and the ice melting power circuit breaker, and a reactive power compensation and active filtering component protection subsystem connected with the reactive power compensation and active filtering component and the reactive power compensation componentconnection circuit breaker. The subsystems are clear in division of work and coordinated in work, so that the protection requirements of the device under the different working conditions can be met;furthermore, the system has the advantage of fast response speed, and guarantees the safe operation of the ice-melting device.
Description
Technical field [0001] The invention relates to the technical field of electrical engineering, in particular to an intensive direct current ice melting device protection and monitoring system. Background technique [0002] DC ice melting is the most direct and effective means for transmission lines to fight against rain, snow, and freezing disasters. It effectively guarantees the safe and stable operation of large power grids during the winter icing period. The intensive DC ice melting device combines dynamic reactive power compensation and active filtering functions on the basis of DC ice melting. In the non-icing period, the intensive DC ice melting device can dynamically compensate the power grid, which greatly improves the utilization rate of the device. At the same time, the intensive DC ice melting device according to the actual demand of the power grid can work in multiple operating conditions such as single ice melting, single reactive power compensation, and parallel op...
Claims
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Login to View More IPC IPC(8): H02G7/16H02J3/18
CPCH02G7/16H02J3/1842Y02E40/20
Inventor 陆佳政毛新果李波谭艳军朱思国黄清军朱远
Owner STATE GRID HUNAN ELECTRIC POWER