This paper analyzes the transient process of a DFIG based wind turbine in detail during general grid voltage swell conditions, especially symmetrical cases. And key points influencing turbines' high ridethrough (HVRT) capability is then evaluated. Furthermore, HVRT control scheme, on resonant control, put forward, which can meet codes' reactive current requirement. Both simulation and experimental results show that proposed scheme accelerate attenuation dc negative sequence stator fluxes,...

Wind power has been the most rapid developed new energy form in recent years, its volatility, intermittent, and randomness have serious impact on safe operation of grid. Therefore accurate prediction wind is an important safeguard reference to guide system. Based principal component analysis (PCA) entropy method (EM), paper expands traditional single evaluation index proposes a comprehensive index. The results experiment show that this scientific comprehensive, can eliminate human factor...

The high voltage direct current transmission technology based on source converter (VSC-HVDC) which employs (VSC), self-turn-off device and pulse-width modulation (PWM) technique. VSC can be categorized into two types as per its topology: one is multi-level consists of series-connected devices, the other Modular Multi-level (MMC) made up submodules whose major components are devices. To ensure safe operation, type testing VSC-HVDC valves essential before launching them. Substitute equivalence...

Standardized model is a necessary way to realize the improvement of renewable energy accommodation capacity through information technology. Based on construction idea IEC 62325 Environment package, this paper designs social data's application architecture for accommodation, and clarifies position data its in related accommodation. Then, analyzes mode Environmental packages, extracts CIM extension method based data-address-phenomenon-measurement-alert-event pattern, standardizes collected...

Preparing spin reserve power in advance is an efficient approach to address the intermittency of renewable energy. To promote renewables penetration levels and increase cost-efficiency bulk system, a novel flexible HVDC model that allows both energy transmitted across regions proposed. Based on this, risk based dynamic schedule (RBDRS) introduced for investigating systems. In addition, generation load centers locate separately extensive spatial range are usually managed by different system...

In order to avoid conservative results, when calculating the ability of power system accommodate renewable energy, social data need be integrated. Data cleaning is an important step in integration. Traditional methods rely only on and ignore implicit rules. This paper first analyzes requirements for energy accommodation, then proposes a technology. technology digs out associations between data, converts them into fuzzy rules form Probabilistic soft logic (PSL), builds neural network based...

Real-time monitoring technology about wire windy swing is one of key technologies in smart grid, which well-known as an advanced power architecture. The proposed this paper by incorporating Micro Doppler Algorithm, a hotspot signal processing. According to others, has the special characteristics such all-day, all-weather, compact, and reliable. relationship between parameters micro-Doppler derived after model formed. simulated results shown illustrate validity algorithm.

As the result of renewable energy natural intermittency, load shedding and renewables curtailment are inevitable to keep supply demand balance in high penetration level power systems. Luckily, with accurate estimation proper allocation reserve, fluctuation can be smoothed appreciably. Therefore, this study presents a novel coordinated day-ahead economic dispatch model for both reserve bulk hybrid AC/DC Flexible frequency operation each regional sub AC system is applied estimate demand, while...

The control strategy of reactive power and voltage, communication between systems the performance single device will affect voltage field station. On basis one million kilowatts wind base in past three years actual operation data test data, firstly analyzes status farm without system system, introduces current architecture common strategy; secondly from station process, clarify key factor effect terminal performance; final form promotion level measures, which is verified.

In order to explore the implementation of regional electric-thermal integrated energy system optimization mechanism, deeply excavate potential, this paper proposes a programming design optimized simulation platform. Firstly, determines number variables, equations, inequalities. Then, converts model into matrix form for ease coding. Finally, encapsulates open source solver lp_solve according form.

Affected by the distributed generation (DG), traditional load forecasting models have been difficult to forecast generalized (GL). In this paper, a short-term method considering separation and identification of GL is proposed. First, key influencing factors are obtained grey relational analysis, which mainly temperature DG. Secondly, proposed improved back propagation (BP) neural network used realize temperature-sensitive (TSL) DG in GL. Finally, long memory (LSTM) for TSL output...

Automatic generation control (AGC) plays an important role in maintaining frequency stability for interconnected power systems. However, traditional area error (ACE) signal used AGC has its limitations including parameter selection and ignorance of synchronous machines' nonlinearity. To improve robustness, a novel measurement-based (MBE) is proposed this paper, which guarantees dynamic performance not relating to system operational parameters. Moreover, model predictive (MPC) minimize MBE...