Power system stability control strategy comprising interruptible load and new energy
A power system and new energy technology, applied in wind power generation, electrical components, circuit devices, etc., can solve problems such as large investment and side effects, and achieve the effects of easy engineering implementation, improved system frequency stability, and accurate results
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[0023] The evaluation method of the present invention includes interruptible load and new energy power system, comprising the following steps:
[0024] A power system stability control strategy containing interruptible loads and new energy sources, characterized in that the strategy includes the following steps:
[0025] 1) Connect new energy sources and interruptible loads in wind farms in normal power systems;
[0026] 2) Under normal circumstances, the new energy generates active power and reactive power, which can interrupt the load to consume active power;
[0027] 3) Detect voltage and frequency fluctuations during the fault period, detect active power from the wind farm and bus voltage frequency, and calculate the moment of inertia under the current system:
[0028]
[0029] Among them: H i is the generator inertia of the i-th machine, ω i is the rotational speed of the i-th machine. h s is the system inertia.
[0030] 4) Detection system real-time active power...
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is calculated, so that system frequency stability level is improved. Compared with the traditional analysis method, the method has the advantages that the system frequency stability level can be effectively judged; due to the fact that a monitoring module is only introduced into an original monitoring system, the control method is can perform engineering implementation moreeasily. The analysis method has the characteristics of being simple in calculation, accurate in result, easy to implement, high in engineering application value and the like.
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