Aiming at the economic benefits, load fluctuations, and carbon emissions of microgrid (MG) group control, a method for controlling MG power distribution Internet Things (IoT) based on deep learning is proposed. Firstly, cloud edge collaborative IoT architecture, combined with distributed generation, electric vehicles (EV), characteristics, system model in established. Then, algorithm used to train features data side. Finally, control strategy adopted platform reasonably regulate coordinated...

Abstract The output power curve of the photovoltaic array presents a multi-peak characteristic under partial shading conditions, which causes traditional maximum point tracking technology to fail guarantee cell. In response this problem, paper proposes apply improved Mayfly Optimization Algorithm (MA) control. By introducing gravity factor and limiting search space male mayfly, optimization accuracy algorithm is enhanced, vibration near MPP reduced, occurrence premature phenomenon avoided....

Abstract When a short-circuit fault occurs on the transmission lines of high voltage DC system based modular multilevel converters, cannot be cleared by adjusting converter control system, which results in longer recovery time. Aiming at problem above, self-clearing scheme clearing module for half-bridge station is proposed. Combined with actual operating status flexible project, centralized parameter models are utilized to analyze mechanism. Besides, impact discharge branch effect studied...

Abstract With the continuous expansion of scale power system, corridor resources overhead transmission lines tend to be saturated in China, making AC/DC erection on same tower a trend future development. The coupling effect will cause DC line generate secondary arc current at point failure when fails, which affects restart. On account mechanism generating by erected tower, this paper uses PSCAD establish simulation model for tower. And effects different fault locations, lengths sections, and...

Abstract The rapid suppression of fault current flowing through overhead transmission lines and safe restart the system are critical problems to be solved urgently improve stability DC grid. A novel adaptive strategy combined with is proposed, which suitable for full-bridge modular multilevel converter high voltage direct system. resistance-capacitance energy transfer branch used achieve a large reduction attenuation amplitude at time. transient permanent can discriminated in short interval...

Abstract The high compensation degree series has a broad development prospects in long distance and large-capacity UHV transmission lines. But it is generating secondary arc current contains low frequency components with amplitude when the single-phase grounding fault occurs compensated line, which not conducive to rapid extinguishing. To solve this problem, paper based on mechanism of by lines, using ATP – EMTP electromagnetic transient program establish simulation model device. And...

Abstract Modular multilevel converter for high voltage DC system has great potential as the key role in global energy interconnection . Adaptive reclosing or restarting after suffering from short-circuit faults is a critical segment to realize safe and stable operation. An adaptive restart scheme half-bridge sub-module transmission proposed, which based on active current injection of auxiliary fault discriminate module. Combined with engineering experience, transient characteristics line...

Abstract Based on the background of Huainan–Wannan UHV AC double circuit transmission line, mechanism transient recovery voltage (TRV) is analyzed in case a wire split conductor failure. The simulation model established to simulate TRV breaker when multiple conductors are different positions, and influence induced also considered. results show that more number fault is, serious peak rate rise increased due voltage. Therefore, it very important consider coupling effect characteristics...

Abstract SF 6 gas is a kind of medium widely used in the insulation power equipment. However, due to greenhouse effect , new environmentally friendly that can instead has been goal for researchers. CF 3 I one most promising alternative gases . In this paper, two-term Boltzmann equations I/N 2 /CO ternary mixture at 0.1 MPa and 300 K are calculated obtain an electron energy distribution function (EEDF), drift velocity V e critical fold breakdown field strength ( E / N ) cr mixed gas, synergy...

Station Service Voltage Transformers (SSVT) combines the operating characteristics of power transformers and design measuring voltage transformers. Due to its lower initial cost higher supply reliability, applications have been extended beyond that auxiliary power. During transient events in network caused by operation switching equipment or short circuits, are affected oscillating voltage, which, under certain conditions, can cause resonance overvoltage inside their windings. Based on...

Abstract After long-term operation, the electrical performance of UHV transmission line insulator string decreases and zero-value insulators are prone to occur. The existence leads flashover strings, which causes large-scale power outages in serious cases. In order improve quality detect lines more timely efficiently, influence on electric field distribution strings is simulated calculated by finite element method. At same time, taking grounding current as cut-in point, principal component...

In the infrastructure of communication base stations, power supply system is an important component.The bi-directional DC-DC converter energy storage for maintaining stability and ensuring safe operation load.In this paper, mathematical model lithium battery studied, topology operating mode bidirectional are analyzed, control strategy summarized.The MATLAB/Simulink simulation results prove effectiveness proposed strategy.