Load Diversity-Its Role in Power System Utilization

McDaniel, G. H.; Gabrielle, A. F.

doi:10.1109/tpas.1965.4766234

Cited by 7 publications

(6 citation statements)

References 3 publications

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“…Load diversity usually refers to the power value obtained by subtracting the peak loads of the above loads from the sum of the peak loads of two or more loads in a period of time. It is mainly used to characterize the difference of operating status of load [21].…”

Section: Model Of Typical Urban Loads In the Process Of Load Recovery...mentioning

confidence: 99%

Research on Urban Load Rapid Recovery Strategy Based on Improved Weighted Power Flow Entropy

et al. 2021

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As the final stage of power system restoration, the critical task of load restoration is to restore the remaining load as quickly as possible. With the continuous increase of the temperature-controlled load and the proportion of electric vehicle load in the urban power grid, the complexity of the load side in the restoration process gradually increases. Therefore, based on the existing grid environment, this paper considers the sudden increase in load recovery caused by cold load pick-up and the auxiliary effect of electric vehicle discharge on load recovery during the load recovery process. From the perspective of economy, safety, and speed, this paper establishes a multi-objective function that includes the amount of load, improved weighted power flow entropy, and the number of recovered lines. The multi-objective evolutionary algorithm based on decomposition is used to optimize the constructed multi-objective load recovery model. Through the IEEE30 node system, it is verified that the method proposed in this paper can effectively establish a fast and safe load recovery plan that meets the actual grid environment.INDEX TERMS Load recovery, electric vehicle, cold load pick-up, improved weighted power flow entropy.

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Section: Model Of Typical Urban Loads In the Process Of Load Recovery...mentioning

confidence: 99%

Research on Urban Load Rapid Recovery Strategy Based on Improved Weighted Power Flow Entropy

et al. 2021

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“…Split air conditioner cluster control will destroy the load group diversity [8], load the running state of the vacancy, transfer or even disappear, resulting in load recovery after the air conditioning load aggregation power oscillation phenomenon, the adverse impact on system operation, and many literatures and their corresponding solutions were also reported. In the middle part of the water cycle, the control characteristics of the central air conditioning split air conditioning system and superposition are not the same, but will also lead to power fluctuations, as shown in Fig.…”

Section: Controllability Analysis Of the Application Of Central Airmentioning

confidence: 99%

“…Air conditioning is a typical type of thermal storage characteristic load. It is a hot topic in the current research to incorporate it into the power system scheduling control [1–9]. Primary frequency control, secondary frequency control as well as economic dispatch are researched in the literature.…”

Section: Introductionmentioning

confidence: 99%

“…However, it is necessary to model the central air conditioning accurately and analyse the influence of the room temperature on the limited power of the host. Without changing the panel of room air conditioning control, the cost of the investment transformation of load control can be greatly saved [8–11]. (b) Most of the literature studies air conditioning in the normal operation of the power system to participate in peak regulation, economic scheduling, and so on.…”

Section: Introductionmentioning

confidence: 99%

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Application of emergency control of central air conditioning in safe and stable operation of large power grid

Li¹,

Guo

Zhang³

et al. 2018

J. eng.

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“…The research by Na et al, on the direct load control (DLC) and controlling AC loads by electricity price in order to achieve the purpose of load reduction does not include control strategies. Manichaikul and Schweppe used the predictive method to control centralized TCLs and provide the auxiliary service for the power grid, taking the minimum error as the target [14]. Centralized TCL load management is carried out by using the comfort control method proposed in Malhamé's and Chong's paper.…”

Section: Introductionmentioning

confidence: 99%

A Closed-Loop Control Strategy for Air Conditioning Loads to Participate in Demand Response

Wang

Yang³

et al. 2015

Energies

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Thermostatically controlled loads (TCLs), such as air conditioners (ACs), are important demand response resources-they have a certain heat storage capacity. A change in the operating status of an air conditioner in a small range will not noticeably affect the users' comfort level. Load control of TCLs is considered to be equivalent to a power plant of the same capacity in effect, and it can significantly reduce the system pressure to peak load shift. The thermodynamic model of air conditioning can be used to study the aggregate power of a number of ACs that respond to the step signal of a temperature set point. This paper analyzes the influence of the parameters of each AC in the group to the indoor temperature and the total load, and derives a simplified control model based on the two order linear time invariant transfer function. Then, the stability of the model and designs its Proportional-Integral-Differential (PID) controller based on the particle swarm optimization (PSO) algorithm is also studied. The case study presented in this paper simulates both scenarios of constant ambient temperature and changing ambient temperature to verify the proposed transfer function model and control strategy can closely track the reference peak load shifting curves. The study also demonstrates minimal changes in the indoor temperature and the users' comfort level. OPEN ACCESSEnergies 2015, 8 8651

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Load Diversity-Its Role in Power System Utilization

Cited by 7 publications

References 3 publications

Research on Urban Load Rapid Recovery Strategy Based on Improved Weighted Power Flow Entropy

Research on Urban Load Rapid Recovery Strategy Based on Improved Weighted Power Flow Entropy

Application of emergency control of central air conditioning in safe and stable operation of large power grid

A Closed-Loop Control Strategy for Air Conditioning Loads to Participate in Demand Response

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