KR-102963741-B1 - Building energy management system based on building operation load index

Abstract

The present invention relates to a system that enables efficient energy management for a building by performing grouping operations based on building operating load indicators targeting a number of indoor units and implementing group-specific peak control in a preset order when necessary. It is characterized by comprising: a first information collection unit that collects operational information targeting indoor units within a building; a second information collection unit that collects temperature and humidity information outside the building; a third information collection unit that collects entry and exit information targeting designated spaces within the building; an information processing unit that calculates building operational load indicators based on the collected information and performs grouping operations according to standards; a power monitoring unit that monitors current power usage and peak power based on the collected information, predicts demand power with a preset time difference, and determines peak control based on comparison with contracted power; and a peak control unit that performs sequential group-by-group peak control targeting indoor units or restores operation to the original state according to the determination of the power monitoring unit.

Inventors

• 남상미
• 박희옥
• 신보람

Assignees

• 베스트 주식회사

Dates

Publication Date

20260512

Application Date

20250718

Claims (7)

1. A first information collection unit (100) that collects operation information targeting indoor units within a building; A second information collection unit (110) that collects temperature and humidity information outside the building; A third information collection unit (120) that collects access information targeting a designated space within a building; An information processing unit (130) that calculates building operation load indicators based on collected information and performs grouping work according to standards; A power monitoring unit (140) that monitors current power usage and peak power based on collected information, predicts demand power at a preset time difference, and determines peak control based on comparison with contracted power; and, A building energy management system based on a building operation load indicator, characterized by comprising: a peak control unit (150) that performs sequential group-by-group peak control of indoor units or enables operation to return to the original state according to the judgment of the power monitoring unit (140).
2. In paragraph 1, The above third information collection unit (120) is, A building energy management system based on building operation load indicators, characterized by collecting reservation schedule information for all designated spaces within a building, including meeting rooms, classrooms, and common spaces, from an academic operations system or a reservation system and reflecting it in the building operation load indicators.
3. delete
4. In paragraph 1, The above power monitoring unit (140) is, A monitoring unit (141) that monitors current power usage and peak power using received operation information; and, A building energy management system based on a building operation load indicator, characterized by comprising: a demand forecasting unit (142) that predicts the demand power of a preset time difference by reflecting received operation information, temperature and humidity information, and entry/exit information into a prediction algorithm, and improves the prediction algorithm by using the error between the predicted value and the actually confirmed power usage based on the prediction result as training data, while excluding one-time events confirmed from the entry/exit information from the training data.
5. In paragraph 1, The above peak control unit (150) is, A building energy management system based on a building operation load indicator, characterized by being configured to preemptively perform off control targeting indoor units installed in designated spaces that are not currently in use, based on access information collected from the third information collection unit (120) and building reservation schedule information.
6. In paragraph 1, The above peak control unit (150) is, It is configured to additionally perform deceleration control on the fan's rotational speed to ensure that the Predicted Percentage of Dissatisfied (PPD) is 10% or less, or less than or equal to a value determined by an arbitrary user setting, by considering the PPD (Predicted Percentage of Dissatisfied) indicator defined in ISO 7730. A building energy management system based on building operation load indicators, characterized by being configured to limit the use of summer cooling mode and winter heating mode as needed.
7. In paragraph 1, The above peak control unit (150) is, When peak control becomes necessary in accordance with preset conditions while the building is equipped with an Energy Storage System (ESS), an emergency generator, and a parallel control panel, By transmitting a power supply request signal to the parallel control panel, A building energy management system based on building operating load indicators, characterized by the ESS immediately starting to discharge and simultaneously starting to preheat the emergency generator, and when a preset time for preheating has elapsed, the ESS stopping to discharge and simultaneously starting to supply power from the emergency generator.

Description

Building energy management system based on building operation load index The present invention relates to a building energy management system based on building operating load indicators, and more specifically, to a system that enables efficient energy management for a building by performing grouping operations based on building operating load indicators targeting a number of indoor units and implementing group-specific peak control in a preset order when necessary. Recently in Korea, there has been an increasing number of cases introducing BEMS (Building energy management system) for the purpose of efficient energy management in large-scale buildings or facilities. In other words, since it is possible to expect an annual energy saving effect of more than 6% and it is mandatory to introduce it when constructing or expanding public institution buildings or facilities with an area of 10,000㎡ or more, the number of buildings or facilities that have actually adopted BEMS is on the rise. However, in the current transitional phase, technology related to BEMS is still insufficient, so the following problems are being found in various cases that have already been introduced and are in operation. In other words, since the operation of major power-consuming devices such as heat pumps is configured to be performed according to a preset schedule, there is a problem in that it cannot flexibly respond to real-time fluctuating power consumption. In addition, while the response to situations requiring peak control should be handled by precisely controlling the operation of various facilities, currently, the system is configured to manually control the Energy Storage System (ESS) or emergency generators, which results in a problem where certain limitations in efficiency occur. Therefore, even with the introduction of BEMS, energy waste due to unnecessary or excessive use of indoor units still occurs, leading to a sharp increase in electricity rates during peak hours. Of course, the development of BEMS-related technologies continues, and as a result, various inventions such as the following have been proposed and disclosed to the public; however, most of them are limited to simple equipment control methods or merely present static control methods applicable only in specific situations. Therefore, it can be said that there is a continuing demand for improvements to systems for managing peak power in buildings or facilities into more efficient forms. FIG. 1 is a basic configuration diagram of a building energy management system based on a building operation load indicator according to the present invention. FIG. 2 is a detailed configuration diagram of an information processing unit constituting the present invention. Figure 3 is a flowchart showing the process of grouping and group-specific peak control based on the calculation of the Building Operating Load Index (BOLI). FIG. 4 is a detailed configuration diagram of a power monitoring unit constituting the present invention. FIG. 5 is a flowchart showing the process of a demand forecasting unit constituting the power monitoring unit correcting a forecasting algorithm. FIG. 6 is an exemplary diagram showing some of the processes in which a peak control unit constituting the present invention performs peak control. FIG. 7 is a flowchart illustrating the process of using an ESS, an emergency generator, and a parallel control panel in a situation where peak control is required. The present invention relates to a building energy management system based on building operating load indicators, and, The system is characterized by comprising: a first information collection unit (100) for collecting operation information targeting indoor units within a building; a second information collection unit (110) for collecting temperature and humidity information outside the building; a third information collection unit (120) for collecting entry and exit information targeting designated spaces within the building; an information processing unit (130) for calculating building operation load indicators based on the collected information and performing grouping operations according to standards; a power monitoring unit (140) for monitoring current power usage and peak power based on the collected information, predicting demand power with a preset time difference, and determining peak control based on comparison with contracted power; and a peak control unit (150) for performing sequential group-by-group peak control targeting indoor units or operating them back to their original state according to the determination of the power monitoring unit (140). Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. First, the first information collection unit (100) is a device for collecting information targeting indoor units, and is configured to individually collect operation information for a number of indoor units installed inside a buildin