A real-time control method of power grid based on compressive sensing technology
A technology of compressed sensing and real-time control, applied in electrical components, code conversion, etc., can solve problems such as insufficient data volume
Active Publication Date: 2019-09-10
SYSU CMU SHUNDE INT JOINT RES INST +1
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However, the existing technology is not mature enough to minimize the amount of transmitted data
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Embodiment 1
[0083] The present invention will be further described below with reference to the accompanying drawings, but the embodiments of the present invention are not limited thereto.
[0084] This embodiment provides a real-time control method for power grid signals based on compressive sensing technology, and the method is applied to a power grid real-time control system, such as figure 1 As shown, the system includes two channels: forward channel and feedback channel, forward channel includes discrete controller, unreliable network, buffer, single area grid control system, feedback channel includes sensor, unreliable network, discrete control system and reconstruction buffers;
[0085] The purpose of the discrete controller is to receive the compressed sampled signal for reconstruction and to send the control signal generated by the reconstructed signal to the buffer through the unreliable network; the buffer is used to prevent the loss of the control vector to Ensure the robustne...
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The invention discloses a power grid real-time control method based on a compressed sensing technology. The method comprises the steps of collecting original state signals of a power grid according to a frequency lower than a Nyquist frequency, and establishing a slide data window; carrying out sparse representation on the slide data window through adoption of kronecker spare basis; designing a compressed sensing measurement matrix and carrying out compressed sensing coding; and finishing transmitting and decoding compressed sensing data. According to the method, transmission of real-time compressed data in a feedback channel is taken into consideration; through adoption of an effective control method and a real-time compressed sensing technology, transmission signals can be compressed and retransmitted while being sampled; and the original signals can be reconstructed and restored precisely at a receiver side. According to the method, under the condition that the information required by the original signals is not lost, the signals are sampled according to a demand far lower than the Nyquist frequency; dimension reduction is carried out on the signals, namely, the compressed representation of the signals can be obtained by directly carrying out less sampling on the signals; the transmission pressure of a channel is mitigated; and more useful information can be transmitted by employing a network with a limited bandwidth.
Description
technical field [0001] The invention relates to the field of power grid control, and more particularly, to a real-time power grid control method based on compression sensing technology. Background technique [0002] With the rapid development of information technology, people's demand for information has increased dramatically. The simulation of the real world and the digitization of signal processing tools determine that signal sampling is the only way to obtain digital information from analog sources. The Nyquist sampling theorem is an important theoretical basis for guiding how to sample. It points out that the sampling rate More than twice the frequency of the signal must be reached to accurately reconstruct the signal. However, people's demand for information is increasing, and the bandwidth of the signal carrying information is getting wider and wider, and the sampling rate and processing speed required by the signal processing framework based on this are also getting...
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IPC IPC(8): H03M7/30
Inventor 唐慧许银亮李志成
Owner SYSU CMU SHUNDE INT JOINT RES INST