Resilience-Based Optimal Placement Method for Integrated Electricity and Gas Energy System

2020 ◽  
Author(s):  
Huili Tian ◽  
Gechao Huang ◽  
Ye Chen ◽  
Gengfeng Li ◽  
Xin Li ◽  
...  
Keyword(s):  
Energy System ◽  
Optimal Placement ◽  
Placement Method

scholarly journals IMPROVE THE EFFICIENCY OF THE POWER TRANSMISSION SYSTEM USING THE GENETIC ALGORITHM TO DETERMINE THE OPTIMUM LOCATION AND FACTS DEVICES

2020 ◽  
Vol 21 (2) ◽  
pp. 133-142
Author(s):  
Husam Hasan Mohammed ◽  
Hiba Zuhair Abdul Kareem ◽  
Wafaa Mohammed Ridha Ridha
Keyword(s):  
Genetic Algorithm ◽  
Reactive Power ◽  
Rapid Development ◽  
Energy System ◽  
Transmission System ◽  
Operating Conditions ◽  
Transmission Capacity ◽  
Optimal Placement ◽  
Reactive Control ◽  
Facts Devices

 As the world's energy consumption increases, the expansion of the energy system becomes increasingly important. However, the creation of new transmission lines requires excessive costs and time if the same transmission capacity is to be added to the existing network. Today's electrical networks are faced with high risks of voltage instability and real power losses. This development tends to occur due to the lack of reactive control power (RPL) in heavily stressed operating conditions caused by increased demand for loads and the rapid development of power systems worldwide. This paper has adopted the setting of FACTS (flexible AC transmission system) devices as additional control parameters for reducing transmission losses in power system static types of two FACTS devices consisting of SVC (static VAR compensators) while the TCSC (thermistor controlled series compensator) is included in the issue formulation. During this paper, the proposed algorithm was to determine the optimal placement of power network devices by genetic algorithm to manage reactive power, reduce losses, increase the transmission capacity and power lines, and help simulate the IEEE 24 bus control system and also the position of FACTS devices. ABSTRAK: Apabila penggunaan tenaga dunia semakin meningkat, penambahan sistem tenaga sangat penting. Walau bagaimanapun, penciptaan talian penghantaran terkini memerlukan kos yang berlebihan dan had masa jika kapasiti penghantaran yang sama digunakan dengan lebih tinggi. Dalam rangkaian elektrik hari ini, unit ini berhadapan dengan risiko ketidakstabilan voltan dan putus bekalan tenaga. Penambahan sistem tenaga ini cenderung berlaku disebabkan kekurangan kuasa kawalan reaktif (RPL) dalam keadaan beban operasi yang besar disebabkan oleh peningkatan beban permintaan dan perkembangan pesat sistem kuasa di seluruh dunia. Kertas ini telah mengguna pakai peranti FACTS (sistem penghantaran AC fleksibel) sebagai parameter kawalan tambahan bagi mengurangkan kehilangan penghantaran dalam sistem kuasa statik dua peranti FACTS yang terdiri daripada SVC (pemampas VAR statik) manakala TCSC (pemampas siri termistor kawalan) adalah termasuk dalam perumusan isu. Dalam kertas kerja ini, algoritma yang dicadangkan adalah penempatan optimum peranti rangkaian kuasa oleh algoritma genetik bagi mengurus kuasa reaktif juga mengurangkan kerugian dan meningkatkan kapasiti penghantaran dan kabel elektrik dan membantu menyerupai sistem kawalan bas IEEE 24 dan juga kedudukan peranti FACTS di mana ia terbukti berkesan.

scholarly journals Application of EIQ Method in Distribution Center Planning

2021 ◽  
Vol 261 ◽  
pp. 03047
Author(s):  
Mingqian Hou ◽  
Xin Tian ◽  
Nan Dong ◽  
Yuxue Geng ◽  
Xinwu Wang
Keyword(s):  
Present Situation ◽  
Distribution Center ◽  
Classification Method ◽  
Optimal Placement ◽  
Logistics Distribution ◽  
Placement Method ◽  
Abc Classification

Through the EIQ analysis of the quantity of goods out of storage, the present situation of logistics distribution center is effectively displayed, a better picking method is obtained, and the optimal placement method is found by using the ABC classification method combined with the data. The efficiency of logistics distribution center is greatly improved.

scholarly journals Innovative Optimal Approach to Implement Fast Propagation Tissue Culture

2017 ◽  
Vol 14 (2) ◽  
pp. 615-620
Author(s):  
Hossein Nazarian ◽  
Amir Hossein Ghadimi
Keyword(s):  
Tissue Culture ◽  
Plant Growth ◽  
Growth Regulators ◽  
Optimal Placement ◽  
Regeneration Ability ◽  
Adaxial Side ◽  
Placement Method ◽  
Optimal Approach ◽  
Different Parts ◽  
Better Than

ABSTRACT: In this study bulbetets of royal lily have been used as explants. The innovative approach is based on optimal placement and adventitious sprout induction and the adventitious sprout proliferation in special conditions. Then effects of different parts of scales and placement method, types and concentrations of cytokinin, different parts of bulbetet scales and placement method on adventitious sprout induction have been discussed. At the end the effects of plant growth regulators on induction and multiplication of bulbetet scales of royal lily have been studied. The results represents that the regeneration ability of outer layer scales of royal lily is better than the middle ones, which was better than the inner ones. The adaxial side of royal lily bulbetets in contact with medium upward can produce more and stronger adventitious sprouts than the adaxial side downward.

scholarly journals Research on Optimal Placement of Actuators of High-Rise Buildings Considering the Influence of Seismic Excitation on Structural Modes

Buildings ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 8
Author(s):  
Jiarui Zhang ◽  
Yaoyang Zhu ◽  
Zhao Li ◽  
Jianwei Tu
Keyword(s):  
Classical Method ◽  
Structural Response ◽  
Optimal Placement ◽  
Seismic Excitations ◽  
Building Model ◽  
High Rise ◽  
Placement Method ◽  
Gramian Matrix ◽  
Controllability Gramian ◽  
Reduction Effect

Presently, most of the common placement methods of actuators are based on the structural response and system energy to select the optimal locations. In these methods, the contribution of controllability and the energy of seismic excitations to each mode of the structure are not considered, and a large number of cases need to be calculated. To solve this problem, the Clough–Penzien spectral model is combined with the Luenberger observable normal form of the system to calculate the energy of each state. The modal disturbance degree, considering modal energy and controllability, is defined by using the controllability gramian matrix and PBH system controllability index, and the modes are divided into the main disturbance modes (MDMs) and the secondary disturbance modes (SDMs). A novel optimal placement method of actuators based on modal controllability degree is proposed, which uses MDMs as the main control modes. The optimal placement of actuators and the vibration control simulation of a 20-story building model are carried out. The results show that the vibration reduction effect of the proposed placement method is significantly better than that of the method of uniformly distributed actuators (Uniform method) and the classical placement method of actuators based on the system controllability gramian matrix (Classical method).

Optimal Placement of Triaxial Accelerometers Using Modal Kinetic Energy Method

2012 ◽  
Vol 166-169 ◽  
pp. 1583-1586 ◽  
Author(s):  
Ting Hua Yi ◽  
Xiang Wang ◽  
Hong Nan Li
Keyword(s):  
Kinetic Energy ◽  
Mutual Influence ◽  
Signal To Noise Ratio ◽  
Element Model ◽  
Optimal Placement ◽  
Mode Shapes ◽  
Placement Method ◽  
Target Mode ◽  
The Relationship ◽  
Sensor Positions

Modal kinetic energy (MKE) method gives a measure of the dynamic contribution of each finite element model physical degree of freedom to each of the target mode shapes, and provides a rough idea where the maximum responses could be measured. It could help to select those sensor positions with possible large amplitudes, and to increase the signal to noise ratio, which is critical in harsh and noisy circumstances. Kammar proposed a new optimal placement method of triaxial accelerometers based up on the effective independence algorithm (EfI3), which places triaxial accelerometers as single units in an optimal fashion. On the basis of EfI3, this paper fully considers the mutual influence of three directions and makes some improvements for the traditional MKE method. A novel optimal placement method of triaxial accelerometers called MKE3 is proposed which is proved rational and effective by analysis the relationship between the EfI algorithm and MKE method.

Sign in / Sign up

Export Citation Format

Share Document