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KR-20260062382-A - METHOD, APPARATUS AND SYSTEM FOR LOGGING OUTPUT CONTROL OF ELECTRODE BOILER

KR20260062382AKR 20260062382 AKR20260062382 AKR 20260062382AKR-20260062382-A

Abstract

The present invention relates to a method, apparatus, and system for logging output control of an electrode boiler. A method according to one embodiment of the present invention is a method performed in a Power Management System (PMS) that monitors and controls power supplied to a power system, and controls the surplus power to be consumed by operating an electrode boiler when surplus power is supplied to the power system, and comprises: a step of determining whether surplus power is supplied to the power system; a step of generating a control command for the electrode boiler according to whether surplus power is supplied and transmitting it to a Programmable Logic Controller (PLC) that controls the operation of the electrode boiler; and a step of storing logging data for the transmitted control command.

Inventors

  • 박병철
  • 오성문

Assignees

  • 한국전자기술연구원

Dates

Publication Date
20260507
Application Date
20241029

Claims (11)

  1. A method performed in a Power Management System (PMS) that monitors and controls power supplied to the power system, but controls the surplus power to be consumed by operating an electrode boiler when surplus power is supplied to the power system, wherein A step of determining whether surplus power is supplied to the power system; A step of generating a control command for the electrode boiler based on whether surplus power is supplied and transmitting it to a PLC (Programmable Logic Controller) that controls the operation of the electrode boiler; and A step of storing logging data for transmitted control commands; A method including
  2. In paragraph 1, A method comprising the types of control commands above including an on command for turning on the electrode boiler, an off command for turning off the electrode boiler, an output control command for controlling the output amount of the electrode boiler, and an emergency cut-off command for urgently cutting off the output of the electrode boiler.
  3. In paragraph 2, A method comprising the above logging data including first data regarding the time at which a control command occurred, second data regarding the type of the control command, third data regarding the latest measured frequency for the three-phase power line of the power system, and fourth data regarding the output amount of thermal energy to be generated in the electrode boiler.
  4. In paragraph 3, A method in which logging data for each control command includes first to third data in common to enable identification of frequency changes in the power system, and the fourth data is included only in the logging data for the output control command.
  5. In paragraph 4, The above-mentioned judgment step measures the frequency of each current flowing in the three-phase power lines of the power system and determines that surplus power has been supplied to the power system if the measured frequency is higher than the reference frequency, and The above-mentioned transmission step is a method of generating the above-mentioned output control command and transmitting it to the PLC.
  6. A device equipped in a Power Management System (PMS) that monitors and controls power supplied to the power system, and controls the consumption of such surplus power by operating an electrode boiler when surplus power is supplied to the power system, A measuring unit for measuring the frequency of each current flowing in the three-phase power lines of a power system; and A control unit that determines whether surplus power is supplied to the power system using the frequency measured by the above-mentioned measuring unit; is included, The above control unit is, A device that controls the operation of an electrode boiler by generating a control command for the electrode boiler based on whether surplus power is supplied and transmitting it to a PLC (Programmable Logic Controller) that controls the operation of the electrode boiler, and stores logging data for the transmitted control command.
  7. In paragraph 6, The above control unit is a device that controls to generate any one of the types of control commands, including an on command to turn on the electrode boiler, an off command to turn off the electrode boiler, an output control command to control the output amount of the electrode boiler, and an emergency cut-off command to urgently cut off the output of the electrode boiler.
  8. In Paragraph 7, The above control unit is a device that controls the storage of logging data including first data regarding the time at which a control command occurred, second data regarding the type of the control command, third data regarding the latest measured frequency for the three-phase power line of the power system, and fourth data regarding the output amount of thermal energy to be generated in the electrode boiler.
  9. In paragraph 8, The above control unit controls the logging data for each stored control command to include the first to third data in common, thereby enabling identification of frequency changes in the power system, and controls the fourth data to be included and stored only in the logging data for the output control command.
  10. In Paragraph 9, The above control unit determines that surplus power has been supplied to the power system when the measured frequency is higher than the reference frequency, and controls the device to generate the output control command and transmit it to the PLC.
  11. As a system provided in a power system, An electrode boiler connected to a power line of a power system that converts surplus power supplied to the power system into thermal energy; A PLC (Programmable Logic Controller) that controls the operation of the above electrode boiler; and It includes a Power Management System (PMS) that monitors and controls power supplied to the power system, and generates a control command to operate an electrode boiler to consume the surplus power when surplus power is supplied to the power system; The above PMS is, Measure the frequency of each current flowing in the three-phase power lines of the power system, and It determines whether surplus power is supplied to the power system using the measured frequency, and Depending on whether surplus power is supplied, it generates control commands for the electrode boiler and transmits them to the PLC, and A system that stores logging data for transmitted control commands.

Description

Method, apparatus and system for logging output control of an electrode boiler The present invention relates to an output control logging technology for an electrode boiler, and more specifically, to a technology for storing and managing logging data for the output control of an electrode boiler for Power-to-Heat (P2H) conversion of surplus power in a power system. Recently, the use of renewable energy generation systems has been increasing due to environmental concerns. However, these systems have a problem in that their power generation is inconsistent depending on environmental conditions, causing instability in the power grid. In particular, in the case of solar power generation systems, instability in the power grid is caused by the difference between solar power generation and load (consumption), which differs between day and night. Consequently, in regions with abundant sunlight, such as Jeju or Jeollanam-do, the frequency of restricting solar power generation during the day is increasing due to surplus solar power. Electrode boilers for Power-to-Heat (P2H) can be used as a technology to convert this surplus power problem into other forms of energy rather than limiting the output of solar power generation. In this case, the P2H electrode boiler receives three-phase high-voltage electricity from the distribution network and corresponds to a highly responsive load capable of controlling outputs of several kW to several MW in seconds. Such P2H electrode boilers are planned to be operated as part of sector coupling technology that converts surplus power from the power system into thermal energy. However, in the case of conventional technology, logging data regarding the output control of the electrode boiler for P2H is not stored separately, which presents a problem in that the basis for the operation of the P2H electrode boiler and the justification for the output control cannot be verified retrospectively. However, the above description merely provides background information regarding the present invention and does not constitute previously disclosed technology. FIG. 1 shows a schematic block diagram of a system (10) according to one embodiment of the present invention. FIG. 2 shows a block diagram of a device (101) included in the PMS (100) for the first to third functions. FIG. 3 shows a flowchart of a control method according to one embodiment of the present invention. The above-mentioned objectives, means, and resulting effects of the present invention will become clearer through the following detailed description in conjunction with the attached drawings, and accordingly, a person skilled in the art to which the present invention pertains will be able to easily implement the technical concept of the present invention. Furthermore, in describing the present invention, if it is determined that a detailed description of known technology related to the present invention may unnecessarily obscure the essence of the present invention, such detailed description will be omitted. The terms used herein are for describing the embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form as appropriate unless specifically stated otherwise in the text. In this specification, terms such as "comprising," "providing," "making arrangements," or "having" do not exclude the presence or addition of one or more other components in addition to the components mentioned. In this specification, terms such as "or", "at least one," etc., may indicate one of the words listed together or a combination of two or more. For example, "A or B", "at least one of A and B" may include only one of A or B, or may include both A and B. In this specification, descriptions following "e.g." should not limit the embodiments of the invention according to various embodiments of the invention, such as variations including tolerances, measurement errors, limits of measurement accuracy, and other commonly known factors, as the information presented, such as cited characteristics, variables, or values, may not exactly match. In this specification, where it is stated that a component is 'connected' or 'connected' to another component, it should be understood that it may be directly connected to or connected to the other component, or that there may be other components in between. On the other hand, when it is mentioned that a component is 'directly connected' or 'directly connected' to another component, it should be understood that there are no other components in between. In this specification, where a component is described as being 'on' or 'in contact' with another component, it should be understood that it may be in direct contact with or connected to the other component, but that another component may exist in between. On the other hand, where a component is described as being 'immediately above' or 'in direct contact' with another component, it should be understood that no other c