Multi-energy microgrid (MEMG) has the potential to improve energy utilization efficiency. However, uncertainty caused by distributed renewable resources brings an urgent need for multi-energy co-optimization ensure secure operation. This paper focuses on distributionally robust management problem MEMG. Various flexible in different sectors are utilized mitigation, then, a data-driven Wasserstein distance-based joint chance-constrained (DRJCC) model is proposed. To make DRJCC tractable,...

Abstract In order to enhance the output of unconventional oil and gas, it is essential modify their reservoirs. Plasma pulse technology a new reservoir modification technology, which has characteristics safety environmental protection compared with traditional technology. Discharge testing plasma equipment was conducted in laboratory setting. The energy released (123.93 J), peak power (40.57 MW) average (17.71 during main-discharge phase studied, statistical repeated discharge frequency...

To solve the problem of slow convergence rate reaching law and chattering problems in dynamic response sliding mode control, an improved double-power is proposed. The adjusted by changing magnitude power terms adaptively at different stages system approach process, speed process greatly improved. Its existence, accessibility stability are proven theory. simulation results show that faster than fast law. When there uncertainty system, state its derivatives can rapidly converge to...

Abstract In order to increase the production of unconventional oil and gas, it is necessary improve its reservoir. Plasma pulse technology one a safe environmentally friendly reservoir reconstruction technology. this paper, discharge test plasma equipment was carried out in laboratory. The different stages (pre-discharge, main-discharge, sinusoidal attenuation oscillation post-discharge stage) single were discussed, frequency characteristics repeated studied detail. shows that energy average...

This study proposes a multitype electrolytic collaborative hydrogen production model for optimizing the capacity configuration of renewable energy off grid systems. The process utilizes synergistic electrolysis an alkaline electrolyzer (AEL) and proton exchange membrane (PEMEL), fully leveraging advantages low cost AEL strong regulation characteristics PEMEL. For convenience optimization solution, article constructs mixed linear that considers constraints during system operation, with...

The impedance characteristics of the plasma (PLAS) channel produced by pulsed power discharge in water play an important role estimation shock wave energy. To study channel, a reservoir improvement device based on high-voltage was developed. First, theoretical model quadruple voltage doubler rectifier circuit built state-space averaging method, structure electrode introduced, and process segmented. Then, established using COMSOL simulation software, breakdown simulated bubble theory....

Summary The low porosity of the reservoir has a significant impact on production unconventional oil and gas, hence device to increase enhance gas recovery was developed. can be lowered 3000 m operate continuously for more than 30 minutes under discharge voltage 11 kV in frequency range 0–60 Hz improve by causing resonance. equipment structure includes an energy storage circuit, trigger switch, transducer. theoretical model circuit established state space averaging method obtain time constant...

Abstract High voltage fracturing technology was widely used in the field of reservoir reconstruction due to its advantages being clean, pollution-free, and high-efficiency. However, high-frequency circuit oscillation occurs during underwater high pulse discharge process, which brings security risks stability system. In order solve this problem, an power system established, generation conditions were analyzed suppression method proposed. Firstly, structure introduced charging model energy...

Based on the background of achieving carbon peaking and neutrality, development application new high-power compressors, electric grid drilling RIGS fracturing pump system provide equipment support for electric, green intelligent shale gas fields in China. However, harmonic pollution becomes more serious due to converter frequency conversion device system, which easily causes resonance problem. Therefore, is comprehensively analyzed treated. Firstly, working mechanism compressor, impedance...

In this paper, a scheme for zero-voltage ride through of permanent magnet synchronous generator wind power system is proposed. Maintaining the stability DC-link voltage key to realizing through. A braking chopper used dissipate active restrain rise during grid fault. However, chopper-caused disturbance double closed-loop control side converter makes effect on worse. Therefore, robust current feedforward control, based nonlinear extended state observer and global fast terminal sliding mode...

In this paper, a control method of full-bridge DC–DC converter for pulse power supply with controllable charging time based on Active Disturbance Rejection Control (ADRC) is presented. For application, the scheme objective to achieve flexible current adjust supply. Due existence switching devices in system, dynamic characteristics system are complicated; an LADRC (Linear Control) controller constructed regulate so as improve flexibility and performance high-voltage linearizes extended state...

With the rapid increase in proportion of installed wind power capacity total grid capacity, state has put forward higher and requirements for integration into grid, among which most difficult requirement is zero-voltage ride through (ZVRT) capability turbine. When voltage drops deeply, a series transient processes, such as serious overvoltage, overcurrent, or speed rise, will occur motor, seriously endanger safe operation turbine itself its control system, cause large-scale off-grid accident...