Dynamic simulation experiment device for researching dynamic characteristic of direct current (DC) transmission system
A technology of DC transmission system and dynamic characteristics, applied in educational appliances, teaching models, instruments, etc., can solve problems such as hidden dangers of safe operation, inability to achieve professional technical training, lack of dynamic model experimental devices, etc., to improve judgment and processing capabilities. Effect
Active Publication Date: 2013-03-27
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +2
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Problems solved by technology
When it is necessary to use corresponding instruments and equipment for actual operation, there is a lack of dynamic model experimental devices that can well simulate the actual scene. Even if the actual operation is carried out at the operating site, it may not be able to improve the level of handling emergency failures except for hidden dangers to safe operation.
This obviously fails to achieve the purpose of professional technical training
Method used
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Embodiment Construction
[0021] The present invention will be further described below in conjunction with the drawings and embodiments.
[0022] figure 1 , figure 2 , It builds the main circuit and control and protection circuit of the DC transmission system in the dynamic model laboratory, and sets the upper computer 23 on the platform to connect with the control and protection circuit, and the upper computer 23 is also connected to the main circuit through the monitoring circuit; The main circuit of the DC transmission system includes a rectifier side circuit and an inverter side circuit. The AC bus I2 of the rectifier side circuit is connected to the equivalent AC power grid 1 on the rectification side of the dynamic model laboratory, that is, connected to the external city grid. The size is 380V, which simulates the actual AC voltage of 380kV; the AC bus II12 of the inverter side circuit is connected to the inverter side equivalent AC grid 11 (dynamic mode network) of the dynamic model laboratory, a...
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The invention provides a dynamic simulation experiment device for researching dynamic characteristics of a direct current (DC) transmission system. The dynamic simulation experiment device is used for prepost training for DC operating staff. A main circuit of the DC transmission system comprises a rectifying side circuit and an inverting side circuit; an alternating current (AC) bus I of the rectifying side circuit is connected with a rectifying side equivalent AC grid of a dynamic simulation lab, namely an external commercial grid; the AC voltage is 380 V for simulating the 380 kV actual AC voltage; an AC bus II of the inverting side circuit is connected with an inverting side circuit equivalent AC grid of the dynamic simulation lab, namely a dynamic simulation net; the AV voltage is 1,000 V for simulating the 500 kV actual AC voltage; and an upper computer acts on the inverting side equivalent AC grid of the dynamic simulation lab of the inverting side circuit and a DC transmission system main circuit by controlling a protection circuit so as to simulate the instantaneous DC dynamic response of the fault AC end of the inverting side circuit.
Description
Technical field [0001] The invention relates to a dynamic model experimental device used for the study of the dynamic characteristics of a direct current transmission system. Background technique [0002] Since the world's first HVDC transmission project in Gotland, Sweden was put into operation in 1954, HVDC transmission technology has developed rapidly with the rapid development of power electronics technology. It has unique advantages in long-distance power transmission and grid interconnection. , Has been widely used all over the world as a powerful supplement to high-voltage AC transmission technology. Its main advantage is: Improve transmission capacity and transmission distance. With the expansion of the grid area, the transmission capacity and transmission distance of electric energy are also increasing. The higher the required grid voltage level, the better the effect of compact power transmission; it improves the economy of power transmission. The higher the transmis...
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IPC IPC(8): G09B23/18G09B25/02
Inventor 姚金霞刘民云玉新袁海燕梁军于大洋郭启伟任敬国
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY