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Manoj Kumar Maharana

Bio: Manoj Kumar Maharana is an academic researcher from KIIT University. The author has contributed to research in topics: PID controller & Photovoltaic system. The author has an hindex of 5, co-authored 33 publications receiving 85 citations. Previous affiliations of Manoj Kumar Maharana include Indian Institute of Technology Madras.

Papers
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Journal ArticleDOI
TL;DR: In this paper, a new generator rescheduling approach for preventive control of power system is presented which can reallocate power generation for multiple unstable contingencies based on graph theory, which can prepare the system when it is still in normal operation, so that the system is able to face future uncertain events in a satisfactory way.
Abstract: A new generation rescheduling approach for preventive control of power system is presented which can reallocate power generation for multiple unstable contingencies based on graph theory. The objective of preventive control is to prepare the system when it is still in normal operation, so that the system is able to face future uncertain events in a satisfactory way. The generator rescheduling is based on the outage of links from one generator area to the other without violating line overloads. The quantity of generation shifting from one generator area to other is calculated by the proportionality assumption. When rescheduling of generators fails to provide a feasible solution for secure operation, optimal load shedding/switching off disturbed area, called islanding formation, is resorted to. The suitability of the proposed method is demonstrated with the help of six bus three machine power system and IEEE 30-bus power system.

17 citations

Proceedings ArticleDOI
01 Feb 2017
TL;DR: In this paper, the authors present the general idea regarding Energy Management System (EMS) in micro grid, connection modes of EMS, different strategies and control techniques developed and several optimization techniques applied in order to lessen the overall cost of micro grid and to alleviate the deviations between the generation and demand at every instant.
Abstract: Generation side of the Power industry has taken a major leap towards successfully extracting energy from the different Renewable Energy Sources (RES). Day-by-day continuous efforts are made in order to utilize more energy from these RES rather than depending on the conventional energy sources mainly for these reasons: to attain pollution-free environment, to minimize the fast depletion of the natural reserves and reduce the transmission cost for empowering inaccessible areas. As the combinations of all such Hybrid Energy Sources (HES) together with load constitutes a Micro grid, the real time energy management of these sources to satisfy every demand of the load side with accuracy (without any significant losses) is the main point of consideration. This review paper presents the general idea regarding Energy Management System (EMS) in micro grid, connection modes of EMS, different strategies and control techniques developed and several optimization techniques applied in order to lessen the overall cost of micro grid and to alleviate the deviations between the generation and demand at every instant. Moreover, model of Fuel Cell producing an output voltage of 12.09 V and output current of 0.8638A at an instant has been shown. Again, the wind turbine has been modeled to generate a maximum output power of 11.49 MW.

9 citations

Proceedings ArticleDOI
01 Mar 2018
TL;DR: This paper illustrates Photovoltaic energy storage through a combination of Battery and Supercapacitor through the Fuzzy Logic Strategy to increase batter performance of the system and battery durability.
Abstract: This paper illustrates Photovoltaic energy storage through a combination of Battery and Supercapacitor. Batteries are having relatively high time constant. So, they can last more time to get discharge. Supercapacitors are used for a little power demand. The combination of batteries and supercapacitors will increase batter performance of the system and battery durability. The Energy Management System(EMS) is operated by the Fuzzy Logic Strategy to maintain the State Of Charge of battery and supercapacitor (SOCbat and SOCSC) and keep Supercapacitor and Battery safe.

8 citations

Proceedings ArticleDOI
01 Dec 2009
TL;DR: The result shows that the proposed approach is computationally fast, reliable and efficient, in restoring the system to normal state after a contingency with minimal control actions.
Abstract: This paper presents a new Particle Swarm Optimization based corrective strategy to alleviate overloads of transmission lines. A Direct Acyclic Graph (DAG) technique for selection of participating generators and buses with respect to a contingency is presented. Particle Swarm Optimization (PSO) technique has been employed for generator rescheduling and/or load shedding problem locally, to restore the system from abnormal to normal operating state. The effectiveness of the proposed approach is demonstrated for different contingency cases in IEEE 57 and modified IEEE 118 bus systems. The result shows that the proposed approach is computationally fast, reliable and efficient, in restoring the system to normal state after a contingency with minimal control actions.

7 citations

Proceedings ArticleDOI
01 Oct 2015
TL;DR: In this paper, transient analysis of AGC with a ramp disturbance in a Thermal-Thermal two area power system, including the effect of capacitive energy storage (CES) and superconducting magnetic energy storage(SMES), is presented.
Abstract: This paper presents transient analysis of Automatic Generation Control (AGC) with a ramp disturbance in a Thermal-Thermal two area Power System (each area contains two units), including the effect of Capacitive Energy Storage (CES) and Superconducting Magnetic Energy Storage (SMES) Generally all the disturbance are taken into consideration as unit step disturbance, because it indicates the sudden change of state Here it is assumed that the disturbance is taking place gradually rather than instantly In this case a comparison study is done with AGC and with two other cases, ie AGC with CES unit and with SMES unit In this system the PID controller is used By the help of I, PI & PID controller strategy the dynamic responses are also studied System modelling has been done by the help of MATLAB SIMULINK software

7 citations


Cited by
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01 Nov 2000
TL;DR: In this paper, the authors compared the power density characteristics of ultracapacitors and batteries with respect to the same charge/discharge efficiency, and showed that the battery can achieve energy densities of 10 Wh/kg or higher with a power density of 1.2 kW/kg.
Abstract: The science and technology of ultracapacitors are reviewed for a number of electrode materials, including carbon, mixed metal oxides, and conducting polymers. More work has been done using microporous carbons than with the other materials and most of the commercially available devices use carbon electrodes and an organic electrolytes. The energy density of these devices is 3¯5 Wh/kg with a power density of 300¯500 W/kg for high efficiency (90¯95%) charge/discharges. Projections of future developments using carbon indicate that energy densities of 10 Wh/kg or higher are likely with power densities of 1¯2 kW/kg. A key problem in the fabrication of these advanced devices is the bonding of the thin electrodes to a current collector such the contact resistance is less than 0.1 cm2. Special attention is given in the paper to comparing the power density characteristics of ultracapacitors and batteries. The comparisons should be made at the same charge/discharge efficiency.

2,437 citations

Journal ArticleDOI
TL;DR: In this article, a quantitative investigation of the stability and reliability of power grids with a focus on cascading failures under external disturbances is presented, where the authors investigate the risk of cascading failure of the regional power grids.
Abstract: The stability and reliability of electrical power grids are indispensable to the continuous operation of modern cities and critical for preparedness, response, recovery and mitigation in emergence management. Because present power grids in China are often running near their critical operation points, they are especially vulnerable and sensitive to external disturbances such as hurricanes, earthquakes and terrorist attacks, which may trigger cascading failures or blackouts. This paper describes a quantitative investigation of the stability and reliability of power grids with a focus on cascading failures under external disturbances. The 118-bus (substation) power network in Hainan, China is employed as a case study to investigate the risk of cascading failure of the regional power grids. System performance and reliability of the power grids are evaluated under two hypothetical scenarios (seismic impact and intentional disturbance) that could trigger cascading failures. By identifying the most vulnerable (critical) edges and nodes, the robustness of the power network is evaluated under the triggered cascading failures. It is found that the system reliabilities could decline as much as 95% during the triggered cascading failure. This paper also explores the use of concepts from modern complex network theories such as state transition graph and characteristic length to understand the complex mechanism of cascading failures. The findings could be useful for power industries and emergency managers to evaluate the vulnerability of power systems, understand the risk of blackout induced by cascading failures, and improve the resilience of power systems to external disturbances.

118 citations

Journal ArticleDOI
TL;DR: In this article, a new search algorithm based on the ant search mechanism is proposed for identifying proper islanding scenarios in network, for detecting proper islandings in power system, the security constraints considered for finding islanding scenario are load-generation balance and line overloading which are implemented using linear programming and DC load flow.
Abstract: Cascading failures and blackouts are the most significant threats for power system security. If the process of cascading failure proceeds by further line tripping, the system will face uncontrolled islanding. Establishment of uncontrolled islands with deficiency in MW or Mvar power balance are the main reasons for system blackout. In order to reduce the risk of blackout due to islanding, intentional or controlled islanding has been considered as a preventive strategy. In this paper, for identifying proper islanding scenarios in network, a new search algorithm based on the ant search mechanism is proposed. The security constraints considered for finding islanding scenarios are load–generation balance and line overloading which are implemented using linear programming and DC load flow. The proposed algorithm has been applied on IEEE 39-bus network with promising results showing the ability of the algorithm for finding proper islanding scenarios quickly.

95 citations

Journal ArticleDOI
22 Jan 2020-Energies
TL;DR: Finding the main trends in the field of centralized energy management systems (EMS) for microgrids, together with a complete paper database and their features, serve as a useful outcome for a better understanding of the current research-specific challenges, opportunities, potential barriers, and open questions regarding the creation of future centralized EMS developments.
Abstract: This paper presents both an extensive literature review and a qualitative and quantitative study conducted on nearly 200 publications from the last six years (based on international experience and a top-down analysis framework with five classification levels) to establish the main trends in the field of centralized energy management systems (EMS) for microgrids. No systematic trend analyses have been observed in this field in previous literature reviews. EMS attributes for several features such as objective functions, resolution techniques, operating models, integration of uncertainties, optimization horizons, and modeling detail levels are considered for main trend identification. The main contribution of this study is the identification of four specific existing research trends: (i) dealing with uncertainties (comprises 33% of the references), (ii) multi-objective strategy (29%), (iii) traditional paradigm (21%), and (iv) P-Q challenge (17%). Each trend is described and analyzed based on the main drive of these separate research fields. The key challenges and the way to cope with them are described based on the rationality of each trend, the results of previous reviews, and the previous experience of the authors. Overall, finding these main trends, together with a complete paper database and their features, serve as a useful outcome for a better understanding of the current research-specific challenges, opportunities, potential barriers, and open questions regarding the creation of future centralized EMS developments. The traditional numerical analysis is insufficient to identify research trends. Therefore, the need of further analyses based on the clustering approach is emphasized.

61 citations