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Xplore Articles related to Systems Operation

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Automated signal selection maximizing circuit coverage for efficient debug

2016 IEEE International Conference on Consumer Electronics-Asia (ICCE-Asia), 2016

As the complexity of chip increases, the importance of post silicon verification is escalated. Trace buffer is a commonly used hardware architecture to achieve an efficient debug process. It is advantageous since it is able to store internal values which are captured during system operation at-speed. However, it cannot store a vast number of signals due to its limited storage. ...


A Rational Basis for Determining the EMC Capability of a System

1973 1EEE International Electromagnetic Compatibility Symposium Record, 1973

None


Assessing a rural electrification program in Malaysia: System performance analysis on 11 solar PV-diesel hybrid systems

2016 4th International Conference on the Development in the in Renewable Energy Technology (ICDRET), 2016

In 2006, there was a significant numbers of schools in rural Sabah in Malaysia that had no access to 24-hours electricity. Extension of grid electricity networks becomes uneconomical because of the geographical conditions of these areas and the low electrical energy density demand of the population. Malaysia's rural development policies, therefore, emphasizes on the need to improve the learning and ...


The modeling of self-healing control system for distribution network based on UML

2015 5th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT), 2015

Self-healing for smart distribution network which is based on Distribution Automation(DA) and Advanced Distribution Automation (ADA), is one of the key characters and core functions for smart distribution network to deal with the inside and outside threatens of the network as well as to increase system operation security and efficiency. In this paper, we focus on the modeling of self-healing ...


Hz analysis of LTI systems via conversion to positive systems

2017 56th Annual Conference of the Society of Instrument and Control Engineers of Japan (SICE), 2017

Motivated by recent drastic advances in the study of linear-time invariant (ETI) positive systems, we explore analysis techniques of general, not necessarily positive ETI systems using positive system theory. Even though a positive system is characterized by its peculiar property that its impulse response is nonnegative, we often deal with nonnegative impulse responses even in general ETI system analysis. A ...


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IEEE-USA E-Books

  • Automated signal selection maximizing circuit coverage for efficient debug

    As the complexity of chip increases, the importance of post silicon verification is escalated. Trace buffer is a commonly used hardware architecture to achieve an efficient debug process. It is advantageous since it is able to store internal values which are captured during system operation at-speed. However, it cannot store a vast number of signals due to its limited storage. Therefore, it is very important to select appropriate internal signals for efficient debug. In this paper, we propose a new signal selection scheme to detect errors as close as its occurrence cycle.

  • A Rational Basis for Determining the EMC Capability of a System

    None

  • Assessing a rural electrification program in Malaysia: System performance analysis on 11 solar PV-diesel hybrid systems

    In 2006, there was a significant numbers of schools in rural Sabah in Malaysia that had no access to 24-hours electricity. Extension of grid electricity networks becomes uneconomical because of the geographical conditions of these areas and the low electrical energy density demand of the population. Malaysia's rural development policies, therefore, emphasizes on the need to improve the learning and living condition at the rural schools. The abundant solar energy resource in the region is used for providing alternative power supply for these schools. 160 schools in rural Sabah were installed with solar photovoltaic (PV)-diesel hybrid systems. Even though the systems have been in operation for some years, knowledge informing the systems performance is difficult to find. Thus, understanding the system operation is a highly valuable experience and lessons can be learned for implementation of the rural electrification program (REP). This paper describes the finding from a field study at 11 solar PV-diesel hybrid systems. It highlighted some parameters that define the reliability of a solar PV system. The solar PV systems installed at schools in rural Sabah were found to be reliable. They reduced dependency on the diesel fuel consumption and fully utilized clean energy from the sun. It is essential to have reliable solar PV system that can provide sufficient energy for the load demand.

  • The modeling of self-healing control system for distribution network based on UML

    Self-healing for smart distribution network which is based on Distribution Automation(DA) and Advanced Distribution Automation (ADA), is one of the key characters and core functions for smart distribution network to deal with the inside and outside threatens of the network as well as to increase system operation security and efficiency. In this paper, we focus on the modeling of self-healing control system for distribution network based on UML. Firstly, the background, application scenarios and requirements for self-healing control system of smart distribution network were analyzed. Then, the static and dynamic models of the control system were built based on UML. Three types of self-healing control are realized through four self-healing stages in three scenarios. Finally, based on the modeling results, the system architecture and key applications for the self-healing control system were implemented. The results in this paper are useful for investigation on the conceptions and key technologies, increasing the normalization and reusability of self-healing control system as well as guidance for real self-healing applications.

  • Hz analysis of LTI systems via conversion to positive systems

    Motivated by recent drastic advances in the study of linear-time invariant (ETI) positive systems, we explore analysis techniques of general, not necessarily positive ETI systems using positive system theory. Even though a positive system is characterized by its peculiar property that its impulse response is nonnegative, we often deal with nonnegative impulse responses even in general ETI system analysis. A typical example is the computation of the H2norm where we focus on squared impulse responses. To deal with such products of impulse responses in a systematic fashion, in this paper, we first establish a construction technique of an ETI system whose impulse response is given by the product of impulse responses of two different ETI systems. Then, as the main result, we reduce the H2norm computation problem of a general ETI system into the L∞-induced norm computation problem (or L1problem in short) of a positive system, by which we can derive a closed-form formula for the H2norm computation.

  • Fault-tolerant energy scheduling system

    Scheduling is very important and essential process for the State Load Dispatch Centers to generate various schedules like entitlements, declared capability, injection and drawl schedules etc. for disciplined management of power. Scheduling system is required for state load dispatch centers (SLDC) and their state-sector generating stations, distributed companies/beneficiaries throughout the clock because schedules can change regularly with an hour in advance. Scheduling system should provide its continuous service in the event of the failure of any of its components. So to achieve fault tolerance for scheduling system, the clustering and load balancing approach is used.

  • A programmable fully-integrated microstimulator for neural implants and instrumentation

    This paper presents a fully-integrated stimulator chip for electrical microstimulation. The device is designed in a high-voltage process that allows up to 20V power supply and 19V output voltage compliance. A broad range of current-mode stimulation waveforms and patterns can be generated, including symmetrical/asymmetrical, biphasic/monophasic, and pulse train stimuli. The current amplitude, pulse width, and stimulation rate are adjustable from 0.5μA to 2mA, 100μs to 4ms, and 0.1Hz to 200Hz, respectively. Two complementary charge-balancing techniques are integrated to reduce residual voltage and stimulation artifacts. In in vitro experiments, the stimulator is demonstrated to trigger neural spikes, modulate neuronal firing rate, and alter mesoscopic neuronal activity. The results suggest the proposed microstimulator can support a wide variety of neuroscience experiments that require electrical microstimulation.

  • Cross-border redispatch as the remedial action and aspects of its implementation

    Transmission system operators deal with situations when their system does not comply with N-1 criterion on daily basis. Remedial actions are any actions which the transmission system operator implements in due time to avert a critical situation. During the year some transmission elements reach the Maximum Permanent Current Loading, a situation which is unacceptable for the safety and reliable operation of the system. After exhausting of all non-cost possible actions it is necessary to consider the measures of market-technical kind, so called redispatch. Anticipated legislative changes, whether at European, national or internal level will extend system operator's possibilities of facing and managing a critical situation.

  • IEC 61850 based testbed for micro-grid operation, control and protection

    Test of system operation, control and protection is becoming an important part of the micro-grid technology. This paper presents a testbed for operation, control and protection of micro-grid based on IEC 61850 with RT-LAB. A hierarchical system architecture for testbed including a system level, a bay equipment level, and a power device level is presented, and the design for testbed is proposed in detail. Then, experiments are performed based on the proposed testbed to verify its validity.

  • An innovative analying method for the scale of distribution system security region

    Distribution system security region (DSSR) has been widely used to analyze the distribution system operation security. This paper innovatively defines the scale of DSSR, namely the number of boundary constraints and variables of all operational constraints, analyzes and puts forward the corresponding evaluation method. Firstly, the influence of the number of security boundary constraints and variables on the scale of DSSR is analyzed. The factors that mainly influence the scale are found, such as the number of transformers, feeders, as well as sectionalizing switches, and feeder contacts modes between transformers. Secondly, a matrix representing the relations among transformers in distribution system is defined to reflect the characteristics of network's structure, while an algorithm of the scale of DSSR based on transformers connection relationship matrix is proposed, which avoids the trouble of listing security region constraints. Finally, the proposed method is applied in a test system to confirm the effectiveness of the concepts and methods. It provides the necessary foundation for DSSR theory as well as safety analysis.



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