Peak load in power supply

1963 ◽  
Vol 9 (103) ◽  
pp. 300-300
Author(s):  
H. Horwood
Keyword(s):  
Power Supply ◽  
Peak Load

Demand Side Management for Reducing Rolling Blackouts Due to Power Supply Deficit in Sumatra

2014 ◽  
Vol 69 (5) ◽  
Author(s):  
Husna Syadli ◽  
Md Pauzi Abdullah ◽  
Muhammad Yusri Hassan ◽  
Faridah Hussin
Keyword(s):  
Power Systems ◽  
Customer Service ◽  
Power Supply ◽  
Management Strategies ◽  
Peak Load ◽  
Demand Side Management ◽  
Demand Side ◽  
Demand Growth ◽  
Save Energy ◽  
The Impact

When the high electricity demand growth is not matched by growth in generating sufficient capacity, deficit cannot be avoided. In Sumatera, power outages of up to 6 hours per day are part of the power crisis experienced. To date, deficits experienced by Sumatera require better management strategy and operation of electric power systems, taking into account the security system, reliability and customer service. This paper briefly discusses the impact of rolling blackouts on the community's economy and proposed demand-side management strategies as short term measure to overcome the power supply deficit in Sumatera. From the analysis, electricity savings in household equipment can save energy consumption by 98.79 MW at peak load and 97.55 MW for off peak load time. 

Peak load in power supply

1963 ◽  
Vol 9 (102) ◽  
pp. 258-258
Author(s):  
W. Dougharty
Keyword(s):  
Power Supply ◽  
Peak Load

scholarly journals An Alternative Power Supply System During Peak Loads Using Solar Cells

2018 ◽  
Vol 9 (3) ◽  
pp. 1338
Author(s):  
Zulfikar Zulfikar ◽  
Zulhelmi Zulhelmi ◽  
Agus Mulyadi
Keyword(s):  
Power Plant ◽  
Solar Energy ◽  
Power Supply ◽  
Energy Requirement ◽  
Peak Load ◽  
Electricity Consumption ◽  
Maximum Energy ◽  
Maximum Power ◽  
Current Limit ◽  
Battery Energy

Utilization of renewable energy becomes a necessity in the future due to the fossil energy supply continues to decline. In Indonesia, the use of electricity from renewable sources is minimal. The utilization of solar energy in Indonesia is still limited to remote areas or islands. The main problem of electricity in Indonesia, especially in the city of Banda Aceh, is the frequent occurrence of power outages from the state power plant (PLN), especially during peak load time (WBP). Outside of that time, electricity supply exceeds demand. This study aims to utilize solar energy to reduce the electricity consumption of PLN during WBP. The system is designed to divert the power supply from PLN to the solar power plant (PLTS). The results of a survey of 10 A (current limit) customers are used as a reference to calculate PLTS capacity. During WBP, PLTS supplies to the load, beyond that time, PLN will supply the load. The system is designed to store maximum energy beyond the WBP period into the battery, the source of energy is mainly from the PLTS and alternatively from the PLN when the PLTS can not supply the maximum power. Based on battery energy, the system diverts the load supply from PLN when the battery energy is below the recharge limit. In the case of 10 A customers, with the energy requirement during WBP of 4.3 kWh, it requires 12 solar panels (160 Watt maximum power) arranged in parallel. Thus, the system needs three batteries with 150 Ah capacity also assembled in parallel. The implementation results prove that the PLTS can store solar energy to the battery properly, the system also successfully divert the PLTS source to the load at the time of WBP and transfer back to the PLN source when the battery energy is less than the recharge limit.

scholarly journals Research on Peak Load Shifting Operation Strategy of Small-Scale Mobile Energy Storage Device in Distribution Network

2021 ◽  
Vol 2087 (1) ◽  
pp. 012007
Author(s):  
JianMing Chen ◽  
Ruijin Dai ◽  
Yilin He ◽  
Tiancheng Chen ◽  
Weimin Chen
Keyword(s):  
Energy Storage ◽  
Power System ◽  
Power Supply ◽  
Distribution Network ◽  
Peak Load ◽  
Storage Device ◽  
Utilization Rate ◽  
Small Scale ◽  
Load Shifting ◽  
Threshold Control

Abstract This paper studied two methods of using energy storage (ES) to achieve peak load shifting by charging and discharging. In different distribution network transformer power supply areas, the time of peak and valley of load is not identical. The small-scale mobile ES device was commanded to deliver energy at the peak of the power supply area to reduce the supply pressure of the power system by central control units (CCU), and while the load is at the valley, the ES charges and absorbs power to enhance the utilization rate of energy in the system. Currently, the control methods of peak load shifting for ES device (Constant Power Control and Threshold Control) were studied, and the operation results in power system were analyzed with their involvement, which provided the substantial supports for CCU to dispatch. Ultimately, the results showed the methods proposed were feasible and effective by simulation.

Peak load in power supply

1963 ◽  
Vol 9 (107) ◽  
pp. 474-474
Author(s):  
E. Hallowell
Keyword(s):  
Power Supply ◽  
Peak Load

A Study of Unidirectional Driving Circuit of Piezoelectric Device Considering Energy Recovery

2014 ◽  
Vol 490-491 ◽  
pp. 1053-1056
Author(s):  
Sun Ki Hong ◽  
Jung Seop Lee ◽  
Nam Hee Byeon ◽  
Taesam Kang
Keyword(s):  
Power Supply ◽  
Applied Voltage ◽  
Energy Recovery ◽  
Peak Load ◽  
Load Current ◽  
Square Wave ◽  
Piezoelectric Device ◽  
Supply Capacity ◽  
Driving Circuit

Common R or R-L load do not need special inverter circuits, however piezoelectric load can be considered as R-C load and its voltage does not become 0 even though the applied voltage is 0. Therefore it needs some special inverter with circuit that can discharge the capacitive energy. Especially for unidirectional square-wave voltage driving, it becomes more serious problem. In this paper, an energy recovery circuit for unidirectional square-wave voltage driving for piezoelectric load is proposed. With the circuit, the peak load current and the power supply capacity can be reduced because the energy in the load capacitor is saved to a capacitor for energy recovery and recharged from the capacitor. The appropriateness is proved from the simulation of the proposed circuit.

Optimal Virtual Power Plant Dispatching Approach

2014 ◽  
Vol 590 ◽  
pp. 511-515
Author(s):  
Ya Chin Chang ◽  
Sung Ling Chen ◽  
Rung Fang Chang ◽  
Chan Nan Lu
Keyword(s):  
Power Plant ◽  
Power Supply ◽  
Distribution System ◽  
Storage System ◽  
Peak Load ◽  
Optimization Approach ◽  
Virtual Power ◽  
Virtual Power Plant ◽  
Electricity Cost ◽  
Distribution Transformers

As the integrator of energy resources (DERs), a virtual power plant (VPP) would be able to control the amount of the power access to the distribution transformers such that energy efficiency can be improved. Battery energy storage system (BESS) and demand response (DR) as DERs can entrust the VPP with certain controllability to regulate the power supply of the distribution system. This paper aims to maximize the benefit of the supplied powers over the 24 hours under VPP operation. Combining an iterative dynamic programming optimal BESS schedule approach and a PSO-based DR scheme optimization approach, an optimal VPP operational method is proposed to minimize the total electricity cost with respect to the power supply limit of the distribution transformers and the system security constraints, especially, within the peak load hours. With the TOU rate given each hour, test results had confirmed the validity of the proposed method with the obviously decreased power supply in each peak-load hours and the largely reduced electricity cost accordingly.

Peak load in power supply

1963 ◽  
Vol 9 (99) ◽  
pp. 115-116
Author(s):  
W. Szwander ◽  
H. Horwood
Keyword(s):  
Power Supply ◽  
Peak Load

Power Supply & Storage Capacity of Distribution Network with Multiple Energy Storage Systems and its Application

2013 ◽  
Vol 860-863 ◽  
pp. 568-571
Author(s):  
Wen Peng Yu ◽  
Dong Liu
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Power Supply ◽  
Storage Capacity ◽  
Storage Systems ◽  
Distribution Network ◽  
Peak Load ◽  
Energy Storage Systems ◽  
Peak Period ◽  
Definition Of

With the charging and discharging of grid-tied Energy Storage Systems (ESS), distribution network could shift load from peak period or suppress the fluctuation of renewable energy. Constraints of both grid and ESS are analyzed in the present paper, and definition of power supply & storage capacity of distribution network with ESS is proposed, which quantifies the ability of distribution network to shift load or adopt renewable energy generation. Operating optimization model is proposed for the operation of distribution network considering peak load shifting based on power supply & storage capacity, and the model is tested and verified in case study.

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