Nonsynchronous generators such as photovoltaics (PVs) are expected to undermine bulk power systems (BPSs)' frequency response at high penetration levels. Though the underlying mechanism has been relatively well understood, accurate assessment and effective enhancement of U.S. interconnections' under extra-high PV conditions remains an issue. In this paper, industry-provided full-detail interconnection models were further validated by synchrophasor measurements realistically-projected...

The wide area monitoring system (WAMS) is considered a pivotal component of future electric power grids. As pilot WAMS that has been operated for more than decade, the frequency network FNET/GridEye makes use hundreds global positioning system-synchronized phasor measurement sensors to capture increasingly complicated grid behaviors across interconnected systems. In this paper, overviewed and its operation experiences in are presented. Particularly, implementation number data analytics...

This study explores the impact of high-photovoltaic (PV) penetration on inter-area oscillation modes large-scale power grids. A series dynamic models with various PV levels are developed based a detailed model representing U.S. Eastern Interconnection (EI). Transient simulations performed to investigate change penetration. The control strategies and parameter settings oscillations is studied. paper finds that as increases, damping dominant mode decreases monotonically. It also observed shape...

This letter proposed an approach to identify the change of inertia distribution in high renewable power systems. Using footprints electromechanical wave propagation at level, this provides a new and non-invasive way aware system for primary frequency response. Actual measurements dynamic models validated effectiveness approach.

With the development and wide deployment of measurement equipment, data can be automatically measured visualized for situation awareness in power systems. However, cyber security systems is also threated by spoofing attacks. This letter proposed a source authentication (MDSA) algorithm based on feature extraction techniques including ensemble empirical mode decomposition (EEMD) fast Fourier transform (FFT), machine learning real-time classification. Compared with previous work, achieve...

Accurate event identification is an essential part of situation awareness ability for power system operators. Therefore, this work proposes integrated algorithm systems. First, to obtain and filter suitable inputs identification, detection trigger based on the rate change frequency (RoCoF) presented. Then, wave arrival time difference-based triangulation method considering anisotropy propagation speed utilized estimate location detected event. Next, two-dimensional orthogonal locality...

Wide-area monitoring systems (WAMS) are beincreasingly vital for enhancing power grid operators' situational awareness capabilities. As a pilot WAMS that was initially deployed in 2003, the frequency network FNET/GridEye uses GPS-time-synchronized monitors called fredisturbance recorders (FDRs) to capture dynamic behaviors. Over past ten years, large number of publications have been reported. In this paper, most recent developments sensors, data centers, and analytics applications reviewed....

The increase of renewable penetration in power grids calls for loads to participate frequency regulation avoid under-frequency load shedding after large resource contingencies. motivation this paper is fulfill a fast residential control stability enhancement. For purpose, novel mobile distribution-level phasor measurement unit (MDPMU) developed disturbance event detection, mismatch estimation and control. First, the systematic design MDPMU introduced. proposed has major advantages low cost...

The distribution-level electric network frequency (ENF) extracted from an power signal is a promising forensic tool for multimedia recording authentication. Local characteristics in ENF signals recorded different locations act as environmental signatures, which can be potentially used fingerprint location identification. In this paper, reference database established using FNET/GridEye system. An identification method that combines wavelet-based signature extraction and feedforward artificial...

Power grid primary frequency response will be significantly impaired by photovoltaic (PV) penetration increase because of the decrease in inertia and governor response. PV emulation requires reserving output leads to solar energy waste. This paper exploits current resources explores storage for under high at interconnection level. Based on actual models U.S. Eastern Interconnection Texas grid, effects multiple factors associated with response, including ratio, deadband, droop rate, fast load...

The declining cost of solar Photovoltaics (PV) generation is driving its worldwide deployment. As conventional with large rotating masses being replaced by renewable energy such as PV, the power system's inertia will be affected. a result, frequency may vary more dramatically in case disturbance, and nadir low enough to trigger protection relays under-frequency load shedding. existing frequency-watt function mandated inverters cannot provide grid support loss-of-generation event, PV plants...

This study explores the impact of high PV penetration on inter-area oscillation modes large-scale power grids. A series dynamic models with various levels are developed based a detailed model representing U.S. Eastern Interconnection (EI). Transient simulations performed to investigate change penetration. The control strategies and parameter settings oscillations is studied. finds that as increases, damping dominant mode decreases monotonically. It also observed shape varies strategy new may...

Due to the independent controllability and fast power regulation capability, High Voltage Direct Current (HVDC) system could be a prospective technology provide multiple ancillary services besides conventional bulk transmission. However, with increase of False Data Injection Attacks (FDIAs) on PMU data, HVDC have wrong response once collected data that relied is attacked, thus threatening operating security. How ensure security PMU-based service control become an urgent issue. To mitigate...

Renewable generations, such as variable-speed wind and photovoltaic (PV) power plants, have been expected to contribute systems' frequency response. This paper studies PV plants' control in the U.S. Eastern Interconnection (EI) Texas (TI). Wide-area measurement-validated EI TI dynamic models realistically projected renewable distribution information make these two case much more practical than previous based on only small test system models. A set of plant controls, inertia governor control,...

In this paper, a new systematic method is proposed to analyze the system frequency in power systems under uncertain variability (UV). UV gradually increases systems, which originates from renewable energy generation, random loads, measurement, and communication channels, exerting noteworthy impacts on dynamic frequency. The modeled as stochastic process paper. Then, differential equations are used describe response (SFR) of UV, based SFR model. To assess dynamics an index intra-range...

This study presents a method to locate power system disturbances using wide-area synchropahsor measurements. The merits of the proposed include robustness and ease visualisation. In addition, facilitates calculation electromechanical wave propagation speed distribution. Examples locating disturbance generating distribution are demonstrated FNET/GridEye system, distribution-level measurement system. Without losing generality, can be implemented in any other

In this letter, a fast frequency estimation approach is proposed using frequency-shift filtering. The original sampled signal first frequency-shifted to 0 Hz nearby via multiplying reference signal. Then, convolution average filter applied on the shifted eliminate spectral interference caused by asynchronous sampling. Finally, of power system can be estimated phase difference between arbitrary two points filtered has major advantages low computational burden and strong anti-noise...

This study quantitatively studied the impact of PV power plants on frequency response at both system level and regional in U.S. Eastern Interconnection system. The decrease primary capability was quantified with multiple penetration levels. change found to be non-linear penetration. Different voltage/var control modes were also have obvious response.