Emergency coordination control method and system for coping with multi-circuit direct current blocking fault
A coordinated control system and DC blocking technology, which is applied in the direction of emergency treatment AC circuit layout, AC network circuit, power transmission AC network, etc., can solve problems such as multi-circuit DC blocking instability, achieve defense stability problems, and avoid operational risks. Effect
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Embodiment 1
[0042] like figure 1 As shown, an emergency coordinated control method to deal with multiple DC blocking faults, including steps:
[0043] Step 1. Obtain the basic power grid information, and analyze the under-control volume P that the system can withstand to meet the safety and stability of the power system under the simultaneous or successive blocking faults of multiple DC circuits according to the time-domain simulation software. 1 .
[0044] The basic power grid information includes: electromechanical transient simulation data, expected fault sets, control resources, single DC blocking off-line control strategy, power grid operation mode and safe and stable operation boundary of the power system;
[0045] The expected fault set includes: any combination of multiple DC blocking faults;
[0046] The control resources include: DC controllable resources and load controllable resources;
[0047] The single DC blocking off-line control strategy refers to: the security control...
Embodiment 2
[0063] An emergency coordinated control system for dealing with multiple DC blocking faults, including:
[0064] The off-line calculation module is used to obtain the basic power grid information, and according to the time-domain simulation software, obtain the under-control volume P that the system can withstand under the simultaneous or successive blocking faults of multiple DC circuits to meet the safety and stability of the power system 1 ;Calculate the amount of additional control resources P due to overlapping control measures after simultaneous or successive blocking of multiple DC circuits 重 ; Establishing an extended control resource pool that considers simultaneous or successive blocking faults under the maximum power of multiple direct currents; the extended control resource pool includes: a single direct current control resource and additional control resources;
[0065] On-line calculation module, used to calculate according to DC operating power, under-control qu...
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