Power supply system

Abstract

The challenge is to provide a power supply system that enables efficient power supply while managing power in real time and reducing the loss of surplus power. [Solution] The present invention provides a power supply system 1 comprising a power generation unit 10 equipped with a solar cell panel 11, a power storage system 20 in which a plurality of storage batteries 21, 22 connected in parallel are used to store and discharge the power generated by the power generation unit 10, and a power supply management device 30 equipped with a control unit 31 that comprehensively manages the power from the power generation unit 10 and the power storage system 20 and controls the power supply in real time, wherein the power generation unit 10, the power storage system 20 and the power supply management device 30 are connected such that power is supplied via a private power line 40 and data communication is performed via a private wired communication line 50.

Description

【Technical Field】 【0001】 Relates to a power supply system using solar power generation. 【Background Art】 【0002】 Currently, advanced technologies for power supply networks called smart grids are attracting attention. A smart grid is a system that manages power supply and demand in real time and promotes the effective utilization of renewable energy. Thereby, stable power supply and improvement of energy efficiency are expected. 【0003】 For example, Patent Documents 1 to 4 disclose a power supply system utilizing solar power generation and energy management technologies enabling power transfer. Also, a system that collects power usage data on the demand side in a smart grid and performs optimal power supply is disclosed. 【Prior Art Documents】 【Patent Documents】 【0004】 【Patent Document 1】 Japanese Unexamined Patent Application Publication No. 2023-156628 【Patent Document 2】 International Publication No. 2024 / 111117 【Patent Document 3】 Japanese Patent No. 7432278 【Patent Document 4】 Japanese Unexamined Patent Application Publication No. 2021-48745 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0005】 However, in conventional smart grids, while smart meters are installed on the demand side to measure and control electricity usage, the measurement interval is only about 30 minutes, making real-time power supply control difficult. In addition, communication between smart meters and control devices mainly uses Wi-Fi (registered trademark), and since communication takes place via relay stations, there were concerns about security vulnerabilities. 【0006】 Furthermore, conventional smart grids primarily focus on communication between the demand side and the control center, and do not support real-time control of the supply side (such as power plants). As a result, they cannot respond immediately to rapid fluctuations in power generation and demand, leading to problems such as loss of surplus power and unstable power supply. 【0007】 Therefore, in view of the challenges of smart grids, the present invention aims to provide a power supply system that enables real-time communication between the demand side and the supply side, and that realizes real-time power control not only based on the real-time power demand situation on the demand side, but also for power generation and storage on the supply side. [Means for solving the problem] 【0008】 The power supply system according to the present invention comprises a power generation unit equipped with a solar panel, The aforementioned A power storage system in which multiple batteries connected in parallel are capable of storing and discharging electricity generated by a power generation unit, The aforementioned Power generation section and The aforementioned It includes a power supply management device equipped with a control unit that comprehensively manages power from the energy storage system and controls the power supply in real time, The aforementioned Power generation department, The aforementioned The energy storage system and the power supply management device are self Commercial power Electricity is supplied via power lines, Even when disconnected from the grid power, power can be supplied and controlled via the private power line, and further Self Commercial It is connected so that data communication takes place via a linear communication line. The aforementioned The privately owned wired communication line is also connected to the demand side. The aforementionedReal-time communication between the demand and supply sides enables power supply control that responds to fluctuations in electricity supply and demand. This is a characteristic feature. Let's assume that. 【0009】 As a second invention, the power supply system described above includes a solar panel comprising: a first solar panel with its light-receiving surface facing south; a second solar panel with its light-receiving surface facing east; and a third solar panel with its light-receiving surface facing west. 【0010】 As a third invention, in the aforementioned power supply system, the solar panels are arranged so that the light-receiving surfaces can continuously capture sunlight from sunrise to sunset, forming a continuous curved surface from east to south and then to west, and the light-receiving surfaces are formed to be convex outwards. 【0011】 As a fourth invention, in the aforementioned power supply system, the solar panels are arranged so that the light-receiving surfaces can continuously capture sunlight from sunrise to sunset, forming a continuous curved surface from east to south and then to west, and the light-receiving surfaces are formed to be concave inwards. 【0012】 As a fifth invention, in the aforementioned power supply system, The aforementioned A hydrogen generator that uses electricity supplied from a power supply management device to electrolyze water and produce hydrogen, The aforementioned Produced by a hydrogen generator The aforementioned A hydrogen storage tank for storing hydrogen, and further comprising Therefore, the above Power supply management device and The aforementioned The hydrogen generator is The aforementioned Electricity is supplied via private power lines. The aforementioned The connection is configured so that data communication takes place via a private wired communication line. Furthermore, the hydrogen produced can be used to generate electricity in a fuel cell or used directly as a heat source, enabling cogeneration for hot water supply and heating. Let's assume that. [Effects of the Invention] 【0013】 The power supply system according to the first invention has a power generation unit including a solar panel and a power storage system in which a plurality of storage batteries capable of storing and discharging generated power are connected in parallel. Further, a power supply management device having a control unit for integrally managing these powers and controlling power supply in real time is provided. The power generation unit, the power storage system, and the power supply management device are connected so as to supply power via a private power line and perform data communication via a private wired communication line. Also, by using the private wired communication line, high-speed and stable data communication can always be performed without depending on an external communication network. Thus, real-time communication can be realized between both the supply side and the demand side formed by the power generation unit, the power storage system, and the power supply management device, and highly accurate power control capable of immediately responding to fluctuations in power supply and demand can be performed. 【0014】 Furthermore, in the present invention, different from the conventional smart grid, real-time communication between the demand side and the supply side is realized by a private wired communication line. Therefore, power shortages, surpluses, and surplus power losses due to a long time delay of 30 minutes as in the conventional case do not occur, enabling fine power transfer and real-time control. In addition, by adopting a directly connected private wired communication line without using Wi-Fi (registered trademark) via a relay base station, it is possible to provide a highly secure communication environment independent of an external communication network. 【0015】 Also, by connecting a plurality of storage batteries in parallel, it becomes possible to distribute the charge / discharge load and flexibly supply power while suppressing deterioration of the storage batteries. Thereby, it is possible to immediately respond to fluctuations in power generation amount and demand, maintain stable power supply, and reduce loss of surplus power. Furthermore, by utilizing a private power line, it is possible to realize independent power supply for each region while reducing power costs without depending on a conventional grid line. 【0016】 Thus, the power supply system of the present invention enables efficient power supply while reducing surplus power loss through optimization of power management by real-time control, stable power supply by utilizing parallel batteries, and advanced energy management that combines a private power line and a private wired communication line. 【0017】 The second invention arranges solar panels in three directions: south-facing, east-facing, and west-facing. This enables power generation according to the position of the sun in the morning, noon, and evening, and can disperse the power generation peak. In the configuration with only conventional south-facing panels, power generation was concentrated only during the day, and there was a problem of insufficient power generation in the early morning and evening. However, this problem can be solved by the present invention. Also, by arranging solar panels in multiple directions, the power generation efficiency for each time zone can be improved, and a more stable power supply can be realized. 【0018】 The third invention is that the light-receiving surface of the solar panel is formed into a continuous curved surface from east-facing to south-facing and west-facing, and further formed to be convex outward. As a result, it is possible to continuously receive light along the movement of the sun, so efficient power generation is possible from sunrise to sunset. In particular, by being convex on the outside, it is possible to suppress a decrease in power generation efficiency due to changes in the solar altitude, and stable power generation can be achieved within a certain angle range. Also, in the conventional flat solar panel, there was a problem that the light-receiving efficiency decreased in some time zones, but this problem can be solved by the present invention. 【0019】 The fourth invention is that the light-receiving surface of the solar panel is formed into a continuous curved surface from east-facing to south-facing and west-facing, and further formed to be concave inward. As a result, not only can sunlight in the morning, noon, and evening be continuously captured, but the concave structure can enhance the light-concentrating effect and enable efficient power generation. In particular, the light-receiving efficiency at a low solar altitude is improved, and the energy conversion efficiency is higher than that of the conventional flat solar panel. Also, since it can be made into a structure that is less affected by wind and external influences, an improvement in durability can be expected. 【0020】 The fifth invention includes a hydrogen generation device that uses electricity from a power supply management device to electrolyze water and produce hydrogen, and a hydrogen storage tank for storing the produced hydrogen. This allows for the effective use of surplus electricity and storage as hydrogen energy, thereby reducing wasted electricity. Furthermore, since hydrogen can be used in fuel cells and industrial applications, this system can promote the use of clean energy. [Brief explanation of the drawing] 【0021】 [Figure 1] This is a schematic overall diagram of the power supply system 1, which is the first embodiment. [Figure 2] This is a schematic diagram showing the arrangement of solar panels 11A to 11C according to the second embodiment. [Figure 3] This is a schematic diagram showing the arrangement of the solar cell panel 12 according to the third embodiment. [Figure 4] This is a schematic diagram showing the arrangement of the solar cell panel 13 according to the fourth embodiment. [Figure 5] This is a schematic overall diagram of the power supply system 2, which is the fifth embodiment. [Modes for carrying out the invention] 【0022】 Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following, the same reference numerals will be used for similar elements in all drawings, and redundant explanations will be omitted. In addition, in the descriptions within the text, reference numerals previously mentioned will be used as necessary. 【0023】 (First Embodiment: Power Supply System) Figure 1 shows a schematic overall diagram of a power supply system 1, which is a first embodiment of the present invention. The power supply system 1 of the present invention is broadly divided into a power generation unit 10 equipped with a solar cell panel 11, a power storage system 20 in which a plurality of storage batteries 21, 22 connected in parallel are used to store and discharge the power generated by the power generation unit 10, and a power supply management device 30 equipped with a control unit 31 that comprehensively manages the power from the power generation unit 10 and the power storage system 20 and controls the power supply in real time. The power generation unit 10, the power storage system 20, and the power supply management device 30 are connected so that power is supplied via a private power line 40 and data communication is performed via a private wired communication line 50. The details of the power generation unit 10, the power storage system 20, the power supply management device 30, the control unit 31, the private power line 40, and the private wired communication line 50 will be described below. 【0024】 <Power generation unit 10> The power generation unit 10 is a device for converting solar energy into electrical energy and comprises multiple solar panels 11, 11. The solar panels 11 are installed at appropriate angles and orientations to maximize power generation efficiency. For example, they may be arranged in multiple directions, such as facing south, east, and west, taking into account the angle of incidence of sunlight. This makes it possible to generate electricity over a long period of time, from sunrise to sunset. 【0025】 Furthermore, since the amount of power generated by the power generation unit 10 fluctuates depending on weather and sunlight conditions, it works in conjunction with the energy storage system 20, which will be described later, to ensure a stable power supply. The generated power is first sent to the power supply management device 30 to optimize power supply and demand in real time. If necessary, a portion of the power is stored in the energy storage system 20, which will be described later, and supplied to the demand side according to the amount of demand. In addition, the power generation unit 10 is connected to the power supply management device 30 via a private wired communication line 50, which will be described later, for monitoring the power generation status and data communication. This allows power generation status data to be transmitted in real time, enabling the power supply management device 30 to perform appropriate power control. 【0026】 <Energy Storage System 20> The energy storage system 20 has the function of storing the electricity generated by the power generation unit 10 and discharging it according to the demand. In particular, the energy storage system 20 in the present invention is configured by connecting a plurality of batteries 21 and 22 in parallel. By configuring a plurality of batteries 21 and 22 in parallel, the load on each battery 21 and 22 can be distributed, and battery degradation can be suppressed. For example, by charging some batteries 21 while discharging other batteries 22, the stability of the power supply can be improved. 【0027】 Furthermore, the parallel configuration improves system flexibility, allowing the remaining batteries to continue supplying power even if a specific battery fails (backup supply). The energy storage system 20 works in conjunction with the power supply management device 30 (described later) and transmits the charging and discharging status in real time via the private wired communication line 50 (described later). 【0028】 <Power supply management device 30> The power supply management device 30 is a central device that comprehensively manages the power from the aforementioned power generation unit 10 and energy storage system 20 and controls the power supply in real time. The power supply management device 30 monitors the status of the power generation unit 10 and energy storage system 20 via a private wired communication line 50 (described later) and performs optimal power control based on the amount of power generated and power demand. In addition, by acquiring the real-time power consumption status of each consumer from measuring instruments such as smart meters installed on the demand side (not shown) via the private wired communication line 50, the supply side can perform precise control in response to demand fluctuations. This enables a rapid response to demand fluctuations and more accurate adjustment of the supply-demand balance. For example, when the amount of demand is low, surplus power is stored in the energy storage system 20 and discharged when the amount of demand increases, thereby achieving a stable power supply. As a result, the power supply management device 30 can determine an appropriate charge and discharge schedule according to the demand and power generation status and achieve optimal power operation. 【0029】 Furthermore, the power supply management device 30 plays a role in supplying power to the demand side via the private power line 40, which will be described later. It enables a stable energy supply while minimizing dependence on grid power by understanding the power supply situation in real time. In addition, the power supply management device 30 can also predict future power generation by utilizing a predictive algorithm and analyzing past power generation data and weather data, thereby enabling more efficient power management. 【0030】 <Control Unit 31> The control unit 31 plays a central role in the power supply management device 30, and is a device that integrates and controls the power from the power generation unit 10 and the energy storage system 20 in real time. The control unit 31 monitors the operating status of the power generation unit 10 and the energy storage system 20 via the private wired communication line 50 described later, and determines the optimal power supply schedule according to the amount of power generated and the remaining amount of energy stored in each. This prevents power surpluses and shortages in response to fluctuations in demand, and realizes efficient energy management. 【0031】 Furthermore, the control unit 31 precisely controls the charging and discharging of the batteries 21 and 22, thereby suppressing battery degradation and improving the stability of power supply. In addition, the control unit 31 can analyze past power consumption data and weather data using a prediction algorithm to predict future power demand. This makes it possible to adjust power storage and generation in advance based on the prediction, further improving the efficiency of power supply. 【0032】 The control unit 31 optimizes the power supply from the power generation unit 10, the discharge from the energy storage system 20, and the distribution of power to the demand side via the private power line 40 based on real-time data. This ensures a stable power supply while maintaining a balance between supply and demand by storing surplus power in the energy storage system 20 when power generation is high and discharging power from the energy storage system 20 when power generation is low. 【0033】 <Private power lines 40> The private power line 40 is a transmission line in the power supply system 1 of the present invention that connects the aforementioned power generation unit 10, energy storage system 20, and power supply management device 30, and plays a role in supplying power. By using the private power line 40, independent power supply becomes possible without relying on the transmission network (grid lines) of conventional major power companies. This enables optimal energy operation for each region and reduces transmission costs. In addition, the private power line 40 is managed in real time by the power supply management device 30, enabling appropriate power distribution according to demand. 【0034】 <Private wired communication line 50> The private wired communication line 50 is a communication means for communicating data regarding the power supply status and the operating status of each device and apparatus in real time between the aforementioned power generation unit 10, energy storage system 20, and power supply management device 30 in the power supply system 1 of the present invention. In other words, since the private wired communication line 50 is independent of the external communication network, it is possible to communicate data between the demand side and the supply side in real time without being affected by communication delays or failures in the external network. This enables highly accurate power control that can immediately respond to fluctuations in demand, which was previously difficult. In addition, as the private wired communication line 50, for example, a fiber optic communication line or a metal communication line such as copper wire can be used. In particular, fiber optic communication lines are more suitable than metal communication lines for applications such as the present invention, where real time and reliability are required to a higher degree, as they enable high-speed and high-capacity data transmission and are less susceptible to the influence of external electromagnetic noise. 【0035】 Furthermore, since real-time data communication regarding the power supply status and the operating status of each device and equipment is performed between the aforementioned power generation unit 10, energy storage system 20, and power supply management device 30, data on the power consumption status on the demand side is acquired and communicated in real time with the power supply management device 30, enabling optimal power supply control in response to fluctuations in demand. By using the private wired communication line 50, the power supply management device 30 can instantly grasp the amount of power generated and the energy storage status and perform optimal power control. This makes it possible to respond quickly to fluctuations in power supply and demand and minimize the loss of surplus power. In addition, the private wired communication line 50 can also be linked with external power management systems and smart meters to further improve the optimization of power supply. 【0036】 As described above, the power supply system 1 of the present invention enables the power generation unit 10, the energy storage system 20, and the power supply management device 30 to work together in cooperation with each other, and to optimize power supply and demand in real time via a private wired communication line 50 installed along the private power line 40. With such a system configuration, it is possible to efficiently manage the electricity generated by solar power and realize a stable power supply. 【0037】 Next, by devising the arrangement and shape of the solar cell panels 11 that constitute the power generation unit 10, it is possible to further improve power generation efficiency and enable a more stable power supply. Therefore, the following describes specific embodiments of the arrangement of solar cell panels in the second to fourth inventions described above. 【0038】 (Second embodiment: arrangement of solar panels) A second embodiment of the solar cell panel, which constitutes part of the power supply system of the present invention, includes a power generation unit 10 shown in Figure 1, which comprises a plurality of solar cell panels 11A, 11B, and 11C whose light-receiving surfaces face different directions. A schematic diagram showing the arrangement of the solar cell panels 11A, 11B, and 11C according to the second embodiment is shown in Figure 2. Specifically, as shown in Figure 2, the configuration includes a first solar cell panel 11A facing south, a second solar cell panel 11B facing east, and a third solar cell panel 11C facing west. This arrangement extends the power generation time from sunrise to sunset, making maximum use of the amount of electricity generated by solar power. 【0039】 For example, the east-facing second solar panel 11B efficiently receives sunlight in the morning and begins generating electricity. During the day, the south-facing first solar panel 11A is primarily responsible for generating electricity, and in the evening, the west-facing third solar panel 11C continues to generate electricity. This reduces the uneven distribution of power generation that occurred during certain times of the day with a single south-facing solar panel, enabling a more even power supply (leveling of power supply). 【0040】 Furthermore, the electricity generated by the power generation unit 10 is sent to the aforementioned power supply management device 30, where power supply and demand are optimized in real time. If surplus power is generated, it is stored in the energy storage system 20 and discharged according to demand, enabling a stable power supply. In addition, the power generation status of each solar panel 11A to 11C is transmitted to the power supply management device 30 via the private wired communication line 50 described later, and appropriate control is performed. 【0041】 (Third embodiment: arrangement of solar panels) Figure 3 shows a schematic diagram illustrating the arrangement of the solar cell panel 12 according to the third embodiment. In the third embodiment relating to the solar cell panel that constitutes part of the power supply system of the present invention, as shown in Figure 3, the light-receiving surface of the solar cell panel 12 is formed in a curved shape and has a convex shape toward the outward direction. In other words, the light-receiving surfaces of the solar cell panel 12 are arranged continuously from eastward to southward and then to westward. This configuration makes it possible to efficiently receive light over a wider range in response to changes in the angle at which sunlight moves. For example, in conventional flat solar cell panels, there were times when the power generation efficiency decreased due to changes in the angle of sunlight, but in this embodiment, because the solar cell panel 12 is curved, it can always receive light at the optimal angle according to the movement of the sun. 【0042】 In this embodiment, conventional planar solar panels cannot be directly applied; therefore, flexible solar cells are required. For example, perovskite solar cells have a thin-film structure and can be easily applied to curved surfaces by using plastic or metal foil as the substrate. Organic thin-film solar cells (OPVs) also have increased flexibility through molecular-level structural design, and can be adapted to various shapes by being deposited on a plastic substrate. Furthermore, CIGS (copper-indium-gallium-selenium) thin-film solar cells can also be adapted to curved structures by using flexible metal foil instead of a glass substrate. 【0043】 By using these solar cells, they can be installed along curved surfaces that are convex outwards, enabling highly efficient power generation. The power generated by the power generation unit 10 is managed in real time via the power supply management device 30. Furthermore, the power generation status of the solar cell panels 12 is monitored through data communication using the aforementioned private wired communication line 50, and appropriate power control is performed according to fluctuations in demand. The curved panel structure of this embodiment improves power generation efficiency, enabling a stable power supply, especially during the morning and evening hours when the sun's altitude changes. 【0044】 (Fourth embodiment: Arrangement of solar panels) Figure 4 shows a schematic diagram illustrating the arrangement of the solar cell panel 13 according to the fourth embodiment. The fourth embodiment of the solar cell panel, which constitutes a part of the power supply system of the present invention, is similar to the third embodiment in that the light-receiving surface of the solar cell panel 13 is formed in a curved shape, as shown in Figure 4. However, it differs in that the light-receiving surface is concave inward. In the power generation unit 10, the light-receiving surfaces are arranged continuously from eastward to southward and then to westward, and the curved solar cell panels 13 are formed in a concave shape inward. This configuration allows for efficient collection of sunlight and improves the amount of power generated across the entire light-receiving surface. In particular, by making the light-receiving surface concave, light reflection can be efficiently utilized internally, resulting in higher power generation efficiency compared to a flat panel of the same area. 【0045】 In this embodiment as well, conventional flat solar panels cannot be used, and it is necessary to apply solar cells that can be freely curved. For example, perovskite solar cells are very flexible due to their thin-film structure, and by using metal foil or plastic substrates, they can be made to conform to concave shapes. Organic thin-film solar cells (OPVs), by utilizing polymer materials, are lightweight and highly flexible, and have the characteristic of being adaptable to concave curved surfaces. 【0046】 Furthermore, CIGS thin-film solar cells can be formed on metal foil or polyimide substrates without using glass substrates, and can be applied to curved structures like those in this embodiment. By using these flexible solar cells, they can be installed in close contact with concave curved surfaces, thereby achieving a higher light-gathering effect. 【0047】 The power generated by the power generation unit 10 is sent to the power supply management device 30, where power is optimized in real time. Furthermore, the power generation status of the solar panels 13 is monitored in real time via data communication using a private wired communication line 50, and appropriate control is performed according to weather and fluctuations in power demand. In this embodiment, the concave curved surface structure allows for concentrated reception of sunlight, thus maintaining a relatively high power generation amount even in low-light environments. For example, even on cloudy days or during periods of weak sunlight, sufficient power can be secured due to the light-concentrating effect. In addition, because of the high power generation efficiency, more power can be generated even when installing solar panels of the same area. 【0048】 As described above, the power supply system of the present invention can maximize power generation efficiency and achieve stable power supply by devising the arrangement and shape of the solar panels. However, due to the characteristics of solar power generation, the amount of power generated depends on the weather and time of day, so it is unavoidable that there will be surpluses or shortages of generated power. In particular, when using electricity generated during the day at night, or in order to provide flexible power supply in response to fluctuations in demand, not only an energy storage system but also further means of utilizing energy are required. Therefore, as one embodiment of the present invention, by incorporating a system that uses a portion of the generated electricity to electrolyze water and produce and store hydrogen, it is possible to make effective use of electricity. The embodiments relating to hydrogen production and storage of the present invention will be described below. 【0049】 (Fifth Embodiment: Hydrogen Production and Storage Embodiment) Figure 5 shows a schematic overall diagram of the fifth embodiment of the power supply system 2. In this embodiment, a hydrogen generator 60 and a hydrogen storage tank 61 are provided, which use a portion of the electricity obtained from the power generation unit 10 shown in Figure 1 to electrolyze water and produce hydrogen as shown in Figure 5. The hydrogen generator 60 works in conjunction with the power generation unit 10 and the energy storage system 20 shown in Figure 1, and the power supply is controlled by the power supply management device 30. Specifically, during times when the amount of electricity generated exceeds the demand, surplus electricity is used to electrolyze water and produce hydrogen. The produced hydrogen is stored in the hydrogen storage tank 61 and used as needed. 【0050】 The aforementioned hydrogen generation system is characterized not only by its ability to serve as a means of power storage, but also by its ability to accommodate a variety of uses for hydrogen energy. For example, the stored hydrogen can be reused as electricity using a fuel cell, playing a role in supplementing power generation at night or during peak electricity demand. Furthermore, since hydrogen can be used as fuel for fuel cell vehicles (FCVs) by installing hydrogen stations in urban areas, introducing this system can significantly expand the range of renewable energy use. The hydrogen generation device 60 is connected to the power supply management device 30 via a private power line 40 and a private wired communication line 50, making it possible to monitor and control the hydrogen generation status in real time. For example, when the amount of power generated becomes excessive, hydrogen generation can be started immediately, and appropriate storage control can be performed to prevent the waste of surplus electricity. 【0051】 Furthermore, in this embodiment, by employing a highly efficient electrolytic cell in the hydrogen generator 60, it is possible to improve the conversion efficiency from electricity to hydrogen. In particular, by using a polymer electrolyte (PEM) electrolytic cell or an alkaline water electrolytic cell, stable hydrogen production can be achieved at low temperatures and low pressures. In addition, by using a high-pressure hydrogen storage tank in combination as needed, the hydrogen storage density can be increased, enabling long-term energy storage. 【0052】 Thus, in this embodiment, by effectively utilizing the surplus power from the power generation unit 10 and storing the energy as hydrogen for the long term, the balance of power supply and demand can be optimized, and the energy management capabilities of the solar power generation system can be improved. This makes it possible to provide a more flexible and stable energy supply that could not be achieved with conventional battery storage systems alone. 【0053】 (Sixth Embodiment: Hydrogen Production and Storage Embodiment) The aforementioned hydrogen generation system can also be applied to large-scale power generation facilities. In particular, utilizing hydrogen as part of the fuel in thermal power plants can contribute to reducing CO2 emissions. In recent years, greenhouse gas emissions from the combustion of fossil fuels have become a problem in conventional thermal power plants, and by co-firing hydrogen with fossil fuels such as coal and heavy oil, it becomes possible to generate electricity with a lower environmental impact. In this system, as shown in Figure 5, hydrogen can be generated using surplus electricity generated by solar power generation, and that hydrogen can be supplied to the thermal power plant 71. 【0054】 For example, in gas turbine power generation, introducing "hydrogen co-firing power generation," which involves burning a mixture of natural gas and hydrogen, can significantly reduce CO2 emissions during power generation. Furthermore, in the future, it will be possible to transition to hydrogen-only power generation, thereby realizing a clean power generation method that emits no CO2 at all. The power supply system of the present invention enables hybrid operation of solar and thermal power generation, compensating for the instability of renewable energy while ensuring a stable power supply. 【0055】 (Seventh Embodiment: Hydrogen Production and Storage Embodiment) The aforementioned hydrogen generation system can also be applied to household and commercial cogeneration (cogeneration) systems 72, as shown in Figure 5. Cogeneration is a system that utilizes waste heat generated during power generation for hot water supply and heating, and boasts high energy utilization efficiency. In this embodiment, distributed energy supply can be realized by supplying hydrogen generated using surplus electricity to fuel cell systems in homes, buildings, factories, etc. 【0056】 For example, by utilizing fuel cell cogeneration systems (such as EneFarm), it is possible to generate electricity and supply hot water simultaneously, minimizing energy waste. In particular, commercial cogeneration systems utilize hydrogen in large-scale facilities such as buildings, hospitals, and factories, enabling reductions in energy costs and their use as emergency power sources. 【0057】 For example, in the event of a disaster, stored hydrogen can be used to generate electricity, ensuring continued power supply even during blackouts, thus contributing to improved resilience (disaster response capabilities). By introducing the power supply system of this invention, it becomes possible to supply household and commercial energy using hydrogen energy, contributing to the realization of a sustainable energy society. [Explanation of symbols] 【0058】 1,2: Power supply system, 10: Power generation unit, 11,11A~11C,12,13: Solar panels, 20: Energy storage system, 21,22: Storage batteries, 30: Power supply management device, 31: Control unit, 40: Private power lines, 50: Private wired communication lines, 60: Hydrogen generation device, 61: Hydrogen storage tank, 71: Thermal power plant, 72: Cogeneration system

Claims

[Claim 1] A power generation unit equipped with solar panels, A power storage system comprising multiple batteries connected in parallel, which store and discharge the power generated by the aforementioned power generation unit, A power supply management device comprising a control unit that integrally manages the power from the power generation unit and the energy storage system and controls the power supply in real time, Multiple demand-side facilities that receive electricity, It has, The power generation unit, the energy storage system, the power supply management device, and the demand-side equipment are interconnected via private power lines laid independently of the existing commercial power grid. Even when disconnected from the grid power, power can be supplied and controlled via the private power line. Furthermore, data communication is connected via a private wired communication line laid along the aforementioned private power line. The aforementioned private wired communication line is also connected to the demand side, and by enabling real-time communication between the demand side and the supply side, power supply control that responds to fluctuations in power supply and demand is possible. The power supply management device controls the power supply via the private power line based on real-time communication between the demand side and the supply side via the private wired communication line, and controls the power supply to adjust the power supply to the plurality of demand-side facilities. [Claim 2] In the power supply system according to claim 1, The aforementioned solar panel is The first solar panel is installed with its light-receiving surface facing south, The second solar panel is installed with its light-receiving surface facing east, The third solar panel is installed with its light-receiving surface facing west, A power supply system characterized by including the following. [Claim 3] In the power supply system according to claim 1, The aforementioned solar panels are arranged so that their light-receiving surfaces are continuously curved from east to south and then to west, so that they can continuously capture sunlight from sunrise to sunset. A power supply system characterized in that the light-receiving surface is formed to be convex toward the outward direction. [Claim 4] In the power supply system according to claim 1, The aforementioned solar panels are arranged so that their light-receiving surfaces are continuously curved from east to south and then to west, so that they can continuously capture sunlight from sunrise to sunset. A power supply system characterized in that the light-receiving surface is formed to be concave inward. [Claim 5] In the power supply system according to any one of claims 1 to 4, A hydrogen generator that uses electricity supplied from the aforementioned power supply management device to electrolyze water and produce hydrogen, A hydrogen storage tank for storing the hydrogen produced by the hydrogen generator, Furthermore, it has, The power supply management device and the hydrogen generation device are connected such that power is supplied via the private power line and data communication is performed via the private wired communication line. The power supply system is characterized in that the hydrogen generated is used to generate electricity in a fuel cell or used directly as a heat source, enabling cogeneration for hot water supply and heating.

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