Abstract
For apartment complexes receiving medium-voltage electrical energies, the apartments can choose an electricity charging method between the single and general contracts in the Republic of Korea. In the single contract, a residential high-voltage rate is applied to the total electrical energy consumptions of households and common areas. On the other hand, in the general contract, different rate plans are applied to the electrical energy consumptions of households and their common areas, where a generic high-voltage rate plan is applied to the common consumption. Hence, depending on the amounts and composition of the consumptions, both contracts have their own strengths and weaknesses in terms of the total electricity charge. The management office of an apartment complex can select its preferred contract considering the amount and composition of the power consumptions on an annual basis. In this paper, we first formulate a model for the contracts and analyze their properties based on Monte-Carlo simulations. We then observe the contract properties through actual metering data from 30 apartment complexes in Korea. From the analysis of this paper, we can select appropriate contract for a given apartment complex and have guidelines for saving electricity charges. The greater the consumption of the electrical energy and the common area portion, the more advantageous the general contract is in terms of reducing electricity charges.
Highlights
In the Republic of Korea, different electricity rates are operated depending on their purposes, such as residential, educational, industrial, agricultural, street lamp, and generic uses
We can observe that the single contract usually yields lower electricity charges compared to the general contract case, which implies an unbalancing property between the two contracts
The single and general contracts, which are employed for the mediumvoltage apartment complexes in the Republic of Korea, are analyzed and compared based on both MC simulations and actual metering data from 30 apartment complexes
Summary
In the Republic of Korea, different electricity rates are operated depending on their purposes, such as residential, educational, industrial, agricultural, street lamp, and generic uses. Depending on how to manage this common electricity usage, there are two contracts, which are called the single and general contracts, for the medium-voltage apartment complexes. Depending on the amounts of the household and common usages, the single and general contracts can yield different total electricity charges. The progressive rates of the electricity company and the electricity usages depending on the various factors of the apartment complexes can provide different electricity charges for the current two contracts. We introduce the current contracts, the single and general contracts, which show different properties depending on Energies 2021, 14, 293 employed progressive rates and various factors. Using actual metering data acquired from 30 apartment complexes, the properties of the contracts are experimentally observed From these practical experiments, we can observe that the single contract usually yields lower electricity charges compared to the general contract case, which implies an unbalancing property between the two contracts.
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