Energy control circuit and method based on resistor-capacitor device
An energy control and circuit technology, applied in power transmission AC network, AC network voltage adjustment, power network operating system integration, etc., can solve problems such as lack of energy control methods for high-voltage DC lines
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Embodiment 1
[0105] This embodiment provides an energy control circuit based on a resistive capacitor device, the circuit structure is as follows figure 1 As shown, the circuit is connected to the DC transmission line after being connected in parallel with the converter station at the receiving end, and the circuit includes:
[0106] Main resistance and multiple energy control modules;
[0107] The main resistor and a plurality of energy control modules are connected in series in sequence;
[0108] The main resistor is used to provide the main power for the energy consumption of the energy control circuit;
[0109] The energy control module is used for circuit voltage division.
[0110] The circuit is asymmetrical or symmetrical and connected to the DC transmission line. The symmetrical connection diagram is as follows: Figure 6 shown.
[0111] The resistance value of the main resistor is determined by the preset maximum power consumption value of the circuit and the voltage of the D...
Embodiment 2
[0170] This embodiment provides an energy control method, including:
[0171] A control method of the energy control circuit, comprising:
[0172] Determine the input amount of the energy control module according to the energy consumption requirement;
[0173] According to the input amount, adjust the required input energy control module to a partial voltage state, and adjust the remaining energy control modules to a short circuit state;
[0174] The state of the energy control module is tracked to keep the partial pressure stable.
[0175] According to the input amount, adjusting the energy control module that needs to be input to a partial pressure state includes:
[0176] According to the input amount, it is determined that the energy control module needs to be input;
[0177] The main switch and the auxiliary switch in the energy control module that need to be put into use are turned off, and at this time, the capacitor is connected in series in the circuit for voltage ...
Embodiment 3
[0187] Taking a DC project as an example, the project rated DC voltage U dc =±320kV, the energy control circuit adopts an asymmetric layout, and the maximum power consumed by the energy control circuit is P max =900MW, the main resistance value R can be obtained m_usy =455Ω; the withstand voltage capacity of the main switch of the energy control module is U m_e =3kV, the minimum number N of energy control modules m_min_usy =213.33, the actual design value N of the energy control module m =240; the minimum power absorbed by the energy control circuit is P min =200MW, auxiliary resistance R a_usy =6.64Ω; energy control module main switching device K m The turn-on current withstand capability of The point minimum value L can be obtained m_min_usy =0.32mH, the design value of inductance L m =1mH; if the power consumed by the required energy control circuit is 300MW, the number of auxiliary resistors to be input is 137; if the power consumed by the required energy control ...
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