TWI613390B - Multi-energy supply system for microgrid and micro gas network - Google Patents

Description

Multi-energy supply system for microgrid and micro gas network

The invention relates to a multi-energy supply system of a micro-grid and a micro-gas network, in particular to a system for supplying multiple energy sources of gas and electric micro-grids composed of natural gas and fuel cell power generation groups by gasification of a micro gasification station. .

According to the natural gas and electricity, the two main energy sources are indispensable for the people's livelihood. In particular, every household must use natural gas or electricity as the main energy source for cooking food heat or washing hot water. At present, the world is hotly discussing and sharing the most important energy source. However, the conventional natural gas supply network and the power supply network are independent and independent, that is, natural gas is passed by the gas company through the urban underground pipeline network. The road is supplied to the customer, and the power supply network routing power company supplies the power to the power users through the power transmission line and the urban underground or above-ground distribution network through the power plant, and the natural gas and the electric energy are supplied to the power network. With the construction of power supply networks, the high cost of transmission and distribution, and the consideration of commercial interests, it is not possible to spread to low-density and low-developed areas such as remote townships, towns or sparsely populated mountainous areas or coastal areas, and can only rely on limited transportation capacity. With high transport costs for barreled LPG and self-contained expensive generators, therefore, these low population densities and low development In the region, it is impossible to obtain a good natural gas and power supply network extension, which will result in these low population density and low development areas that cannot be effectively developed and produce better economic construction conditions, resulting in insufficient energy supply or economic embarrassment. The cyclical effect is currently the main issue to be solved.

In addition, in the prior art, there are technologies for generating electricity and providing a microgrid by using a fuel cell, such as the invention patent case of the "Fuel Cell Power Control System" of the Republic of China Patent No. I453986 and the "Technical Publication No. I482352" of the Republic of China. The battery-powered method and its fuel cell device invention patent case respectively disclose a power supply system using a fuel cell as a power generation and power supply, thereby providing a power network as a power supply source, but its main source of power generation, It is still necessary to rely on natural gas, and as the above-mentioned natural gas supply network is independent of the power supply network, and is limited by the construction cost and supply and delivery cost of the natural gas supply network, the fuel cell power supply The system cannot be used in such low-density and low-developed areas as remote townships, towns or sparsely populated mountainous areas or coastal areas. At the same time, the two pre-existing cases can only limit the supply of singles in urban or suburban areas. Only power and energy can not achieve the same effect as the supply of natural gas and electricity.

対応

方法(發電系統和相應的方法)」發明專利公開案，則揭示另一種利用液態二氧化碳(CO₂)流來作為液態天然氣的氣化系統主要媒介，並利用一渦輪發電機(3)藉由動力渦輪(2)及液體CO₂泵(5)分別將該燃燒產品流(6)及冷卻CO₂再循環流(22)注入，而能產生發電電能，但同樣地，該專利前案的液態天然氣氣化與發電結構複雜，其設置成本偏高，且需佔用更大的操作廠區土地面積，無法在上述之偏遠鄉、鎮或人口稀少之山區或濱海地區等低人口密度及低開發之地區進行設置，並且，必需耗費相當多之操作、監控與管理人力，且不利於廠區與設備自動化管理，亦不符合將電力與天然氣兩種能源同時供應之經濟效益，而該專利前案所使用的液態二氧化碳流及燃料產品流，並非是環保循環利用之材料，如有洩漏將造成嚴重的環境污染與環保破壞的後遺症，並不能提供給產業大量利用，僅能限制在特定的工業用戶進行使用，因而大幅拘限其產業應用範疇。 In addition, in other prior patent documents, such as the Japanese Patent Laid-Open Publication No. 2014-582833

対応

Method (Power Generation System and Corresponding Method) The invention patent publication reveals another main medium for the gasification system using liquid carbon dioxide (CO ₂ ) flow as liquid natural gas, and utilizes a turbine generator (3) by power The turbine (2) and the liquid CO ₂ pump (5) inject the combustion product stream (6) and the cooled CO ₂ recycle stream (22), respectively, to generate electricity, but similarly, the liquid natural gas of the patent The gasification and power generation structure is complex, its installation cost is high, and it needs to occupy a larger area of the operating plant area. It cannot be carried out in the low-density and low-developed areas such as the remote townships, towns or sparsely populated mountainous areas or coastal areas. It requires a considerable amount of operation, monitoring and management manpower, and is not conducive to the automation of plant and equipment management, nor does it meet the economic benefits of supplying both electric energy and natural gas. The liquid used in the patent case. The flow of carbon dioxide and fuel products is not a material for environmental recycling. If there is a sequela of serious environmental pollution and environmental damage caused by leakage, it cannot be provided to Extensive use of industry can only be used in a particular limitation of industrial users, thus significantly the capture of its industrial application areas.

In addition, as in the new patent case of the "Multiple Energy Power Supply System" of the Republic of China Patent Gazette No. M486689, it discloses integrated power of electric energy sources such as wind turbines, solar cells, and internal combustion engine generators. The supply system, but only provides the provision of a single power source for the power supply network, and cannot provide the supply function of another energy source such as natural gas, and the power supply capacity that the wind turbine and solar battery can provide in the previous case. Lower, the internal combustion engine generator also needs to supply additional fuel to start its power generation function. There are also problems with fuel transportation cost and efficiency, and it is not suitable for use in low-income populations such as remote towns, towns or sparsely populated mountainous areas or coastal areas. Set up and use in areas with low density and low development.

The main purpose of the present invention is to provide a multi-energy supply system for a micro grid and a micro gas grid to eliminate the conventional power supply grid and the gas supply network, which is expensive and difficult to construct and supply network equipment. Economic benefits, but can not be applied in low-density and low-developing areas such as remote townships, towns or sparsely populated mountainous areas or coastal areas, and the patent can only provide a single internal combustion engine generator or fuel cell. The power supply network cannot simultaneously have the micro-network supply function of natural gas and electric power multiple energy sources, resulting in the lack of natural gas and electricity in low-density and low-developed areas such as remote townships, towns or sparsely populated mountainous areas or coastal areas. Supply network construction and energy supply issues and shortcomings.

Therefore, the multi-energy supply system of the microgrid and the micro-gas network of the present invention comprises: at least one micro gasification station, which is connected to at least one column of liquid natural gas transportation train or tank transporting and unloading liquid natural gas, and the The input liquid natural gas is gasified to form natural gas, and a natural gas supply is performed through a natural gas output end to connect at least one micro gas network for supplying natural gas users; at least one gasification controller is connected to the micro gasification station to control the micro gas. The liquid natural gas in the chemical plant is gasified into natural gas output and monitors the pressure of the natural gas output; a fuel cell power generation group is composed of a plurality of fuel cell modules, and the natural gas output end of the micro gasification station is connected to input the natural gas to Each fuel cell module causes each fuel cell module to generate electricity output, and connects at least one microgrid that supplies power to the power supply via a power output terminal, and supplies power, and the hot gas and hot water generated by each fuel cell module By-products, and then feedback to the micro gasification station, as a gasification of liquid natural gas in the micro gasification station a heat source; and at least one power generation group controller respectively connecting the fuel cell power generation group and the gasification controller to control power generation and load state of each fuel cell module of the fuel cell power generation group, and according to the gas The natural gas of the controller monitors the pressure of the natural gas output, and controls the hot gas and hot water by-products of each fuel cell module of the fuel cell power generation group to feed back to the micro gasification station.

The multi-energy supply system of the microgrid and the micro gas network of the present invention, wherein the micro gasification station comprises: at least one heat exchange tank, wherein the heat exchange tank is provided with at least one exchange pipeline, one end of the exchange pipeline Connecting the liquid natural gas to generate heat exchange through hot gas or hot water input to vaporize the liquid natural Gas, and a natural gas output end is formed at the other end of the exchange line to output the gasified natural gas; and at least one pressure sensor is connected to the natural gas output end of the heat exchange tank to sense the pressure of the natural gas output. And generate a corresponding pressure sensing output.

The multi-energy supply system of the microgrid and the micro-gas network of the present invention, wherein the exchange line of the heat exchange tank of the micro gasification station is connected to one end of the liquid natural gas to form a fuel input port, and the fuel input port is provided with a switch. Valve to control the input operation of liquid natural gas.

The multi-energy supply system of the microgrid and the micro-gas network of the present invention, wherein the natural gas output end of the exchange line of the heat exchange tank of the micro gasification station is provided with at least one output control valve respectively connecting the micro gas The net and the at least one activation tank respectively control the natural gas outputting the natural gas to the micro gas network and the temporary storage portion to the activation tank.

The multi-energy supply system of the microgrid and the micro gas network of the present invention, wherein the heat exchange tank of the micro gasification station is provided with at least one hot gas inlet and a hot water inlet for inputting hot gas and hot water to heat exchange. Inside the slot.

The multi-energy supply system of the micro-grid and the micro-gas network of the present invention, wherein the hot gas inlet port of the heat exchange tank of the micro gasification station is connected in series to a hot gas output line, a hot gas output control valve and a hot gas supply pipe. The hot water inlet of the heat exchange tank is connected in series with a hot water output line, a hot water output control valve and a hot water supply line to control the hot gas output control valve and the hot water output respectively. The valve is opened, and the hot gas is separately controlled to be output through the hot water supply line via the hot gas supply line and the hot water.

In the above multi-energy supply system of the microgrid and the micro gas network of the present invention, an electric heater is arranged at the bottom of the heat exchange tank of the micro gasification station to provide the heat exchange tank for auxiliary heating.

In the above multi-energy supply system of the microgrid and the micro gas network of the present invention, a hot water recovery port is provided at the bottom of the heat exchange tank of the micro gasification station to provide hot water recovery and recycling of the heat exchange tank.

In the above multi-energy supply system of the microgrid and the micro gas network of the present invention, a heat exhaust gas discharge port is disposed at a top end of the heat exchange tank of the micro gasification station to provide hot exhaust gas discharge in the heat exchange tank.

The multi-energy supply system of the microgrid and the micro gas network of the present invention, wherein Each fuel cell module of the fuel cell power generation group is provided with a fuel input end for connecting natural gas outputted from the natural gas output end of the micro gasification station.

The multi-energy supply system of the microgrid and the micro-gas network of the present invention, wherein the fuel input end of each fuel cell module of the fuel cell power generation group is provided with at least one input control valve, and the input control valve is coupled to the micro The natural gas output of the gasification station controls the input of the natural gas into the fuel cell module.

In the above-mentioned multi-energy supply system of the microgrid and the micro-gas network of the present invention, each fuel cell module of the fuel cell power generation group is provided with a power generation end, and the power generation end is connected to the power output end.

The multi-energy supply system of the microgrid and the micro-gas network of the present invention, wherein each fuel cell module of the fuel cell power generation group is provided with a hot gas output end and a hot water output end to respectively output hot gas and hot water by-products. Give the micro gasification station.

The multi-energy supply system of the microgrid and the micro-gas network of the present invention, wherein a hot water tank is connected between the hot water output end of the fuel cell module of the fuel cell power generation group and the micro gasification station to temporarily store heat Water and provide hot water by-products.

The multi-energy supply system of the microgrid and the micro-gas network of the present invention, wherein the power output end of the fuel cell power generation group is coupled to at least one power load sensor and the power circuit breaker to sense the power load capacity of the output power. Size and control power output or cut off power output.

The utility of the multi-energy supply system of the microgrid and the micro-gas network of the invention is controlled by the micro gasification station, the gasification controller, the fuel cell power generation group composed of the plurality of fuel cell modules and the power generation group control The equipment consisting of streamlined equipment, low cost, low manpower and a small grid of microgrid and micro gas network, natural gas and electric energy supply system can be conveniently located in the remote township, town or sparsely populated mountainous area or coastal area. The low population density and the railway station or highway entrance that can be reached by railways in low-developing areas do not need to occupy too much land area, which facilitates the acquisition and construction of land rights. At the same time, it can be transported by rail or by convenient train. Carrying high-capacity liquid natural gas through the road network, without having to replenish it frequently, can greatly save transportation costs, and control the micro gasification station to carry out the gasification of the liquid natural gas through a simple and automatically operated gasification controller, and Feedback of hot gas, hot water by-products or even main power products of the fuel cell power generation group composed of the fuel cell module, Examples of the microcomputer to direct gasification station a heat source required for the operation of the gasification gas, and the hot gas and hot water by-products of the fuel cell power generation group may be supplied to the micro gasification station after being supplied to the micro gasification station as a gasification operation. The hot gas and hot water energy required by the micro gas network user or the micro grid user can improve the energy utilization efficiency of the system of the invention, and allow the micro gasification station and the fuel cell power generation group to simultaneously output natural gas and electric energy. To connect to the microgrid supplied by natural gas users in low-density and low-developing areas such as remote rural areas or towns or in sparsely populated mountainous areas or coastal areas, and by the gasification controller And the power generation group controller can automatically adjust the natural gas volume and the power generation capacity respectively output by the micro gasification station and the fuel cell power generation group according to the gas supply pressure of the micro gas network and the power load state of the micro grid respectively. To further improve the efficiency of the application of natural gas and electric energy, and to completely solve the remote township, town or sparsely populated mountainous area or coastal area. In addition to the low population density and the lack of natural gas and electric energy in the low-developing areas, the problems and shortcomings of the general shortage of natural gas and electric power are not only because of the streamlined equipment and low cost of the system of the present invention, but also the mobility and mobility can be used first. In the remote townships, towns or sparsely populated mountainous areas or coastal areas, such as low population density and low development areas, once the market demand for the area where the system of the present invention was originally laid has reached an economic scale, it is worth investing in laying a large-scale formal natural gas network and In the case of the power grid, the entire system of the present invention can be moved to another area for laying at this time without any waste of equipment investment, and the industrial utilization value and economic benefit of the invention can be further improved.

100‧‧‧Multiple energy supply systems

10‧‧‧Micro gasification station

11‧‧‧Heat exchange tank

111‧‧‧Exchange line

111a‧‧‧fuel input

111b‧‧‧ switch valve

111c‧‧‧ natural gas output

810‧‧‧Power input node

113‧‧‧Output control valve

114‧‧‧hot air inlet

115‧‧‧ hot water inlet

116‧‧‧ hot water recovery port

117‧‧‧Hot exhaust gas discharge

12‧‧‧ Pressure Sensor

13‧‧‧liquid natural gas tank

14‧‧‧Electric heater

20‧‧‧ gasification controller

30‧‧‧Fuel Cell Power Generation Group

31‧‧‧ fuel cell module

311‧‧‧fuel input

311a‧‧‧Input control valve

312‧‧‧hot gas output

313‧‧‧ hot water outlet

313a‧‧ hot water tank

313b‧‧‧Electric heater

314‧‧‧Power generation

32‧‧‧ fuel cell module

321‧‧‧fuel input

321a‧‧‧Input control valve

322‧‧‧hot gas output

323‧‧ ‧ hot water outlet

323a‧‧ hot water tank

323b‧‧‧Electric heater

324‧‧‧Power generation

33‧‧‧Electric load sensor

34‧‧‧Circuit breaker

40‧‧‧Power Group Controller

200‧‧‧ Liquid Natural Gas Transport Train

300‧‧‧Slot truck

400‧‧‧liquid natural gas

500‧‧‧ natural gas

510‧‧‧Micro gas network

520‧‧‧ gas source node

530‧‧‧Starting slot

600‧‧‧ hot air

600’‧‧‧ hot exhaust

600a‧‧‧hot gas output line

600b‧‧‧hot gas output control valve

600c‧‧‧hot gas supply pipeline

700‧‧‧ hot water

700a‧‧‧ hot water outlet

700b‧‧‧hot gas output control valve

700c‧‧‧ hot water supply line

800‧‧‧Microgrid

900‧‧‧Power

Beginning at 1000‧‧

1010‧‧‧ Natural gas output pressure detection

1015‧‧‧Fuel cell power generation group load shedding operation

1020‧‧• Is the heat generated by the fuel cell power generation group the largest?

1030‧‧‧Fuel cell power generation group uplift operation

1040‧‧‧Does the fuel cell power generation group generate the largest power capacity?

1045‧‧‧Increased liquid natural gas input flow

1050‧‧‧Control of gasification controller

1060‧‧‧Control condition adjustment of power generation group controller

30a‧‧‧Power output

810‧‧‧Power input node

The first figure is a system block diagram of a multi-energy supply system for a microgrid and a micro gas network of the present invention; the second figure is a detailed block diagram of a first embodiment of a multi-energy supply system for a microgrid and a micro gas grid of the present invention; The third figure is a gasification and power generation control system diagram of the multi-energy supply system of the microgrid and the micro-gas network of the present invention; the fourth figure is the gasification control of the multi-energy supply system of the microgrid and the micro-gas network of the present invention. Flow chart of natural gasification and power generation control of the generator and power generation group controller; 5 is a detailed block diagram of a second embodiment of a multi-energy supply system for a microgrid and a micro gas grid according to the present invention; and a sixth embodiment is a third embodiment of a multi-energy supply system for a microgrid and a micro gas grid of the present invention. Detailed block diagram.

Referring to the first, second and third figures, the first implementation of the multi-energy supply system 100 of the microgrid and the micro gas network of the present invention, wherein the multi-energy supply system 100 comprises at least one micro a gasification station 10, the micro gasification station 10 can be installed in a remote township or town or a sparsely populated mountainous area or a coastal area, and a low-density and low-developing area railway accessible railway station or highway entrance, and the micro The gasification station 10 further includes at least one heat exchange tank 11 and at least one pressure sensor 12, wherein the heat exchange tank 11 is provided with at least one exchange line 111, and one end of the exchange line 111 forms a fuel input port 111a. The fuel input port 111a is provided with an on-off valve 111b for connecting at least one column of the liquid natural gas transport train 200 or the tank truck 300 to transport the unloaded liquid natural gas 400 to control the input operation of the liquid natural gas 400 by the on-off valve 111b. The type of the valve 111b is not limited, and the series of explosion-proof type electromagnetic valves are exemplified in the present invention.

The other end of the exchange line 111 of the heat exchange tank 11 is formed with a natural gas output end 111c for outputting the gasified natural gas 500. The natural gas output end 111c is coupled to the at least one pressure sensor 12 and the at least one output control valve 113. The pressure sensor 12 senses the pressure of the natural gas 500 output and generates a corresponding pressure sensing output. The output control valve 113 is not limited in type. In the present invention, the explosion-proof three-way electromagnetic valve is used. For example, the output control valve 113 is respectively connected to a gas source node 520 of the micro gas grid 510 for supplying natural gas users and at least one activation tank 530 to respectively control the output natural gas 500 to the micro gas grid 510 and the temporary storage portion. The natural gas 500 is in the start-up tank 530, and the micro-gas net 510 can be pre-built in the remote population, the town or the sparsely populated mountainous area or the coastal area, and the low population density and low development area, and the micro gas network 510 The air source node 520 can be disposed near the location of the micro gasification station 10 to connect the output control valve 113 nearby. The activation tank 530 can be a small and medium natural gas storage tank.

The heat exchange tank 111 is provided with at least one hot gas inlet 114 and a hot water inlet 115 for inputting the hot gas 600 and the hot water 700 into the heat exchange tank 11 to make the exchange pipeline The liquid natural gas 400 in the 111 is subjected to a heat exchange gasification operation, so that the natural gas output end 111c at one end of the exchange line 111 can be exported to the gasified natural gas 500, and a hot water recovery is provided at the bottom of the heat exchange tank 11. The port 116 is recycled by the hot water 700 for providing the heat exchange tank 11, and a hot exhaust gas discharge port 117 is provided at the top end of the heat exchange tank 11 to provide the hot exhaust gas 600' in the heat exchange tank 11.

At least one gasification controller 20, connecting the switching valve 111b of the fuel input port 111a of the heat exchange tank 11 of the micro gasification station 10, the pressure sensor 12 and the output control valve 113, thereby respectively controlling the micro gasification station 10 The liquid natural gas 400 is gasified into natural gas 500 output and monitors the pressure of the natural gas 500 output, and the switching output path and timing of the natural gas 500 temporarily stored in the starting tank 530, for example, the pressure sensor 12 senses the micro gas When the supply pressure of the net 510 is insufficient, the gasification controller 20 controls the output control valve 113 to switch the natural gas 500 into which the activation tank 530 inputs 80% of the reserves to the micro gas grid 510 for auxiliary gas supply.

A fuel cell power generation group 30 is composed of a plurality of fuel cell modules 31 and 32. In the present invention, two groups of fuel cell modules 31 and 32 are exemplified, and the fuel cell modules 31 and 32 are The type of the fuel cell module is not limited. In the present invention, the BlueGen series solid oxide fuel cell module (SOFC) produced by the Australian company Ceramic Fuel Cells (CFCL) is taken as an example. 31 and 32 respectively have a fuel input end 311 and 321 , a hot gas output end 312 and 322 , a hot water output end 313 and 323 , and a power generating end 314 and 324 , wherein the fuel input ends 311 and 321 are respectively provided with at least An input control valve 311a and 321a respectively connected to the output control valve 113 of the natural gas output end 111c of the micro gasification station 10 to control the natural gas 500 to be input into the fuel cell modules 31 and 32, so that The power generating terminals 314 and 324 of the fuel cell modules 31 and 32 are configured to perform a power generating operation. The hot gas output terminals 312 and 322 are coupled to the hot gas input port 114 of the micro gasification station 10 to connect the fuel cell modules 31 and 32. For power generation A hot gas 600 as a by-product of the operation process is input into the heat exchange tank 11, and a heat source required for gasification of the liquid natural gas 400 in the exchange line 111 of the heat exchange tank 11 is provided, and the waste heat gas 600' is used by the heat exchange tank The hot exhaust gas outlets 117 and 323 are respectively connected to a hot water tank 313a and 323a. The hot water tanks 313a and 323a are respectively provided with an electric heater 313b and 323b, and the hot water tank 313a and 323a and reconnecting the hot water inlet 115 of the heat exchange tank 11, the heat exchange tank 11 The hot water recovery port 116 is further connected to the hot water tanks 313a and 323a, so that the hot water 700 of the fuel cell modules 31 and 32, which is a by-product of the power generation operation, is input into the heat exchange tank 11, and then passes through the heat. The water recovery port 116 is recycled to the hot water tanks 313a and 323a for reuse, and heating can also be provided by the electric heaters 313b and 323b to control the temperature of the hot water 700 to be raised.

The power terminals 314 and 324 of the fuel cell modules 31 and 32 are connected to a power output terminal 30a. The power output terminal 30a is connected to at least one power load sensor 33 and a circuit breaker 34. The circuit breaker 34 is connected. At least one power input node 810 of the microgrid 800 of the power user is provided, and the power supply 900, such as 220 volts/60 Hz, is supplied from the power generating terminals 314 and 324 to output the microgrid through the power output terminal 30a and the circuit breaker 34. 800 or by the circuit breaker 34 to cut off the power supply of the micro grid 800, the micro grid 800 can be pre-built in the remote township, town or sparsely populated mountainous area or coastal area such as low population density and low development area or the area The old grid, and the microgrid 800 type can also be a smart grid or a community-type grid, such as the smart grid power supply mode disclosed in the invention patent of the "Virtual Power Plant" No. I478459 of the Republic of China Patent Gazette. A power input node 810 of the microgrid 800 is disposed proximate to the location of the fuel cell power generation group 30 to connect the circuit breaker 34 in the vicinity to place the power 900 nearby into the microgrid 800.

At least one power generation group controller 40, which is not limited in type, may be composed of a programmable controller, an industrial control computer or a small unmanned control station, and the power generation group controller 40 is respectively coupled to the gasification controller 20 and the fuel cell The input control valves 311a and 321a of the power generation group 30, the electric heaters 313b and 323b in the hot water tanks 313a and 323a, the electric load sensor 33 and the circuit breaker 34 to be micro-gasified according to the gasification controller 20 The natural gas 500 of the pressure sensor 12 of the station 10 outputs a pressure amount corresponding to the intake air amount of the fuel cell modules 31 and 32 of the fuel cell power generation group 30 corresponding to the natural gas 500 that controls the input control valves 311a and 321a, and And controlling the electric heaters 313b and 323b in the hot water tanks 313a and 323a to heat the temperature of the hot water 700, thereby controlling the gasification speed of the liquid natural gas 400 via the micro gasification station 10 and the output of the produced natural gas 500, and Further controlling the power generation amount of the fuel cell power generation group 30, the functional relationship is as follows: f(C ₁ , C ₂ , C ₃ )=[E+(H _W +H _A )] (A), wherein the C ₁ representative of a fuel cell power group of the fuel 30 is electrically Sum module 31 and the generating capacity of 32; C ₂ representative of a group of fuel cell power generation of the fuel cell module 31 of the total energy generated and 32 of 30; C ₃ groups representative of fuel cell power generation of the fuel cell module 30 and 32 is 31 Natural gas 500 intake air amount; E represents the sum of the power generated by the fuel cell modules 31 and 32 of the fuel cell power generation group 30; H _W represents the fuel cell modules 31 and 32 of the fuel cell power generation group 30 The thermal energy of the hot water 700; H _A represents the thermal energy of the hot gas 600 generated by the fuel cell modules 31 and 32 of the fuel cell power generation group 30, wherein the C ₁ and C ₂ may be fixed coefficients, and C ₃ is a variable variable that controls the fuel cell module of the fuel cell power generation group 30 by controlling the amount of natural gas 500 of the fuel cell modules 31 and 32 of the fuel cell power generation group 30. 31 and 32 actually generate the sum of the power of 900, the heat of the hot water 700 and the heat of the hot gas 600, and the sum of the variable E and the variables H _W and H _A can be designed in a fixed ratio mode at the factory.

由上表數據所示，吾人可經由該函數關係式(A)的內容來控制調配不同時段的燃料電池發電群組30之燃料電池模組31及32發電電力900之發電量升載或降載操作，以使該燃料電池發電群組30效能可以進一步提昇，並達到最佳的電力經濟調度效率，其中，可以明顯看到所列舉之尖峰用電時段AM8：00-PM4：00可以產生較大值的電力900輸出發電量90千瓦供電，在次峰(一般)用電時段PM4：00-AM8：00則產生中間值之電力900輸出發電量75KW供電，在離峰用電時段AM0：00-AM8：00則產生較小值之電力900輸出發電量45KW供電，當然這些用電時段需求是可以隨著應用地區、氣候、季節不同，而可以作不同的調整與設計，同樣可藉由上述之函數關係式(A)的內容作不同的設計與調整。 Further, according to the above-mentioned functional relationship (A), the power generation group controller 40 controls the parallel operation power generation modes of the fuel cell modules 31 and 32 of the fuel cell power generation group 30 and their different power consumption periods ( The power economy dispatch mode including the best power generation efficiency control including the peak period, the general period and the off-peak period provides a practical example, wherein the fuel cell modules 31 and 32 have a rated power generation capacity of 100 kilowatts (KW), respectively. And 20 kW, the actual power generation of power 900 in each period is shown in the following table:

As shown by the data in the above table, the power consumption of the fuel cell modules 31 and 32 of the fuel cell power generation group 30 of the fuel cell power generation group 30 for different time periods can be controlled to be boosted or de-loaded by the content of the function relationship (A). The operation is such that the performance of the fuel cell power generation group 30 can be further improved, and the optimal power economy dispatching efficiency is achieved, wherein it can be clearly seen that the enumerated peak power consumption period AM8:00-PM4:00 can generate a larger The value of the power 900 output power generation 90 kW power supply, in the secondary peak (general) power consumption period PM4:00-AM8:00, the intermediate value of the power 900 output power generation 75KW power supply, during the peak power period AM0:00- AM8:00 produces a smaller value of power 900 output power generation 45KW power supply, of course, these power consumption period requirements can be adjusted and designed according to the application area, climate, season, etc., also by the above The content of the functional relationship (A) is designed and adjusted differently.

The power generation group controller 40 described above may further perform the operation of the gasification natural gas 500 of the liquid natural gas 400 for each micro gasification station 10 to further activate the fuel cell modules 31 and 32 of the fuel cell power generation group 30. The generation of the power 900 main product and the generation of the hot gas 600 and the hot water 700 by-products provide the heat source required for the gasification operation of the micro gasification station 10, that is, the natural gas 500 that is temporarily stored in the start tank 530 with a minimum reserve of 20%. The fuel input terminals 311 and 321 are controlled to open the control valves 311a and 321a to control the fuel cell modules 31 and 32 to generate power 900 main products and generate hot gas 600 and hot water 700 by-products to provide each micro The gasification station 10 re-executes the thermal energy and power 900 required for the operation of the gasification natural gas 500 of the liquid natural gas 400.

Please refer to the fourth figure, showing the control flow diagram of the multi-energy supply system 100 of the microgrid and the micro gas network of the present invention, the steps including steps 1000 to 1060, wherein: (1000) starts; (1010) natural gas output pressure Size detection? That is, the pressure sensing is monitored by the gasification controller 20 The pressure value of the natural gas 500 outputted by the device 12 to the micro gas grid 510 is increased. If the pressure value is normal, the step 1010 is repeated. If the pressure value is too high, the step 1015 is performed. If the pressure value is too low, the pressure value is too low. Step 1020; (1015) fuel cell power generation group de-loading operation, that is, the gas quantity of the natural gas 500 input through the fuel input ends 311 and 321 of the fuel cell modules 31 and 32 is reduced, so that the fuel cell modules 31 and 32 are The produced power 900 capacity, hot gas 600 and hot water 700 by-product production are relatively reduced, and returns to step 1010; (1020) Is the thermal energy generated by the fuel cell power generation group maximum? That is, the power generation group controller 40 checks whether the production of the hot gas 600 and the hot water 700 heat by-product generated by the fuel cell modules 31 and 32 is maximum, and if so, proceeds to step 1050, and if not, proceeds to step 1030: (1030) The fuel cell power generation group lifting operation, that is, the gas generated by the fuel cell modules 31 and 32 is increased by the gas volume of the natural gas 500 input through the fuel input terminals 311 and 321 of the fuel cell modules 31 and 32. The output of 900 power generation, hot gas 600 and hot water 700 by-products increased relatively; (1040) Is the fuel cell power generation group generating the largest power capacity? That is, the power generation group controller 40 senses whether the output capacity of the power 900 input to the microgrid 800 is maximum according to the power load sensor 33, and if yes, proceeds to step 1050, and if not, proceeds to step 1045; 1045) Increasing the liquid natural gas input flow rate, that is, the gasification controller 20 controls the switching valve 111b of the fuel input port 111a to increase the flow rate of the liquid natural gas 400 input to the exchange line 111 of the heat exchange tank 11 and return Step 1010; (1050) control condition adjustment of the gasification controller, that is, adjusting the input flow rate of the liquid natural gas 400 of the gasification controller 20 and the output flow of the natural gas 500 through the gasification controller 20; (1060) The control condition of the group controller is adjusted, that is, the natural gas 500 air intake of the fuel cell modules 31 and 32 of the fuel cell power generation group 30 is controlled by the power generation group controller 40 according to the above functional relationship (A). And correspondingly controlling the sum of the power 900 actually generated by the fuel cell modules 31 and 32 of the fuel cell power generation group 30, and the hot water 700 The thermal energy and the thermal energy of the hot gas 600 are returned to step 1010. The above steps 1000~1060 can be written and stored in the gasification controller 20 and the power generation group controller 40 by using a software or control program mode, and can be controlled by the gasification controller 20 and the power generation group. The device 40 performs an automatic control operation.

Referring to FIG. 5 again, the second embodiment of the multi-energy supply system 100 for the microgrid and the micro gas network of the present invention, wherein the on-off valve 111b of the fuel input port 111a of the micro gasification station 10 is externally connected At least one liquid natural gas tank 13 is further provided for the liquid natural gas transport train 200 or the tank transport 300 to unload the liquid natural gas 400 for temporary storage, taking a liquid natural gas transport train 200 as an example, one at a time A liquid natural gas 400 of up to 50 metric tons is temporarily stored in the liquid natural gas tank 13; and the tank truck 300 can also temporarily store 20 tons of liquid natural gas 400 in the liquid natural gas tank 13, and 1 metric ton of liquid natural gas 400 can be The micro gasification station 10 gasifies and outputs 1,440 m cubic meters (m ³ ) of natural gas 500. For example, the natural gas 500 used for cooking and bathing hot water for three meals per household per day is about 1 m cubic meter. The amount of 50 metric tons of liquid natural gas 400 carried by the liquid natural gas transport train 200 can be used by about 72,000 households per day, which can greatly reduce the cost of reciprocating the liquid natural gas 400. The liquid natural gas 400 can be provided to the micro gasification station 10 for gasification treatment to produce the output of the natural gas 500. In addition, an electric heater 14 is disposed at the bottom of the heat exchange tank 11 of the micro gasification station 10, and the electric heater is provided. 14 and connecting the gasification controller 20 to be controlled by the gasification controller 20 to provide the heat exchange tank 11 for auxiliary heating to accelerate the gasification of the liquid natural gas 400 in the exchange line 111 of the heat exchange tank 11 into natural gas. The speed of 500.

Please refer to the sixth embodiment, which is a third implementation of the multi-energy supply system 100 of the microgrid and the micro-gas network of the present invention, wherein the hot gas input port 114 of the heat exchange tank 11 is connected in series to connect a hot gas output. a pipeline 600a, a hot gas output control valve 600b, and a hot gas supply pipeline 600c. The hot gas output control valve 600b is a solenoid valve and is electrically connected to the power generation group controller 40 to be controlled by the power generation group controller 40. The control is turned on or off, and after the hot gas 600 required by the heat exchange tank 11 of the micro gasification station 10, if there is excess heat of the hot gas 600, the hot gas output control valve 600b can be opened through the hot gas supply. The pipeline 600c is supplied to the user of the micro gas grid 510 and the user of the micro grid 800. Similarly, the hot water inlet 115 of the micro gasification station 10 is connected in series to connect a hot water outlet line 700a and hot water output. Control valve 700b and hot water a supply line 700c, the hot water output control valve 700b is a solenoid valve, and is electrically connected to the power generation group controller 40 to be turned on or off under the control of the power generation group controller 40, and the fuel cell is After the hot water tanks 313a and 323a of the modules 31 and 32 provide the hot water 700 required for the heat exchange tank 11 of the micro gasification station 10, if there is excess output of hot water 700, the hot water output control valve 700b can pass through the hot water output control valve 700b. Turning on, through the hot water supply line 700c, the user of the micro gas grid 510 and the user of the micro grid 800 can achieve the effective use of the excess hot gas 600 and the hot water 700 and the energy supply. .

The multi-energy supply system 100 of the microgrid and the micro-gas network of the present invention is shown in the above first to sixth figures, wherein the related description and the drawings are merely for clarifying the technical content and technology of the present invention. The present invention is not limited to the scope of the invention, and the scope of the invention is not limited thereto, and the scope of the invention is not limited by the spirit and scope of the invention. The scope of the following patent application is defined.

100‧‧‧Multiple energy supply systems

10‧‧‧Micro gasification station

111a‧‧‧fuel input

111b‧‧‧ switch valve

111c‧‧‧ natural gas output

113‧‧‧Output control valve

12‧‧‧ Pressure Sensor

20‧‧‧ gasification controller

30‧‧‧Fuel Cell Power Generation Group

30a‧‧‧Power output

33‧‧‧Electric load sensor

34‧‧‧Circuit breaker

40‧‧‧Power Group Controller

200‧‧‧ Liquid Natural Gas Transport Train

300‧‧‧Slot truck

400‧‧‧liquid natural gas

500‧‧‧ natural gas

510‧‧‧Micro gas network

520‧‧‧ gas source node

530‧‧‧Starting slot

600‧‧‧ hot air

700‧‧‧ hot water

800‧‧‧Microgrid

810‧‧‧Power input node

900‧‧‧Power

Claims (14)

A multi-energy supply system for a micro-grid and a micro-gas network includes: at least one micro gasification station, which is connected to at least one liquid natural gas transport train or tank transporting and unloading liquid natural gas, and the liquid natural gas input is input Gasification to form natural gas, and outputting at least one micro gas network for supplying natural gas users through a natural gas output terminal for natural gas supply; at least one gasification controller connecting the micro gasification station to control liquid state in the micro gasification station Natural gas is gasified into natural gas output and monitors the pressure of the natural gas output; a fuel cell power generation group is composed of a plurality of fuel cell modules, and the natural gas output end of the micro gasification station is connected to input the natural gas to each fuel cell module. Each fuel cell module generates electric power to generate electric power, and connects at least one microgrid for supplying electric power users via a power output terminal, performs power supply, and generates hot gas and hot water by-products of each fuel cell module, and then Feedback to the micro gasification station as a heat source for liquid natural gas gasification in a micro gasification station And at least one power generation group controller respectively connecting the fuel cell power generation group and the gasification controller to control power generation and load status of each fuel cell module of the fuel cell power generation group, and according to the gasification controller The natural gas monitors the pressure of the natural gas output, and the hot gas and hot water by-products of each fuel cell module that controls the fuel cell power generation group are fed back to the micro gasification station. The multi-energy supply system of the micro-grid and the micro-gas network according to claim 1, wherein the micro-gasification station comprises: at least one heat exchange tank, wherein at least one exchange pipeline is disposed in the heat exchange tank One end of the exchange line is connected to the liquid natural gas to generate heat exchange gas through the hot gas or hot water input to form the natural gas output, and a natural gas output end is formed at the other end of the exchange line to output the gasified natural gas; A pressure sensor is coupled to the natural gas output of the heat exchange tank to sense the pressure of the natural gas output and generate a corresponding pressure sensing output. The multi-energy supply system of the micro-grid and the micro-gas network described in claim 2, wherein the exchange line of the heat exchange tank of the micro gasification station is connected to one end of the liquid natural gas to form a fuel input port, The fuel input port is provided with an on-off valve to control the input operation of the liquid natural gas. The multi-energy supply system of the microgrid and the micro gas network described in claim 2, wherein the natural gas output end of the exchange line of the heat exchange tank of the micro gasification station is provided with at least one output control valve. And respectively connecting the micro gas network and the at least one activation tank to respectively control the natural gas outputting the natural gas to the micro gas network and the temporary storage portion to the activation tank. The multi-energy supply system of the micro-grid and the micro-gas network described in claim 2, wherein the heat exchange tank of the micro-gasification station is provided with at least one hot gas inlet and a hot water inlet for inputting hot air. And hot water to the heat exchange tank. For example, the multi-energy supply system of the micro-grid and the micro-gas network described in claim 5, wherein the hot gas inlet port of the heat exchange tank of the micro gasification station is connected in series to a hot gas output line and hot gas output. a control valve and a hot gas supply line, and a hot water input port of the heat exchange tank, connected in series by a hot water output line, a hot water output control valve and a hot water supply line, respectively, to be respectively controlled via the hot gas output The valve and the hot water output control valve are opened, and the hot gas is separately controlled to be output through the hot water supply line via the hot gas supply line and the hot water. The multi-energy supply system of the micro-grid and the micro-gas network according to claim 2, wherein an electric heater is arranged at the bottom of the heat exchange tank of the micro gasification station to provide the heat exchange tank for auxiliary heating. . The multi-energy supply system of the micro-grid and the micro-gas network described in claim 2, wherein a hot exhaust gas discharge port and a hot water recovery port are respectively arranged at the top and the bottom of the heat exchange tank of the micro gasification station. To provide hot water recovery and recycling of the hot exhaust gas discharge and heat exchange tanks in the heat exchange tank, respectively. For example, the multi-energy supply system of microgrid and micro gas network mentioned in item 1 of the patent application scope Each of the fuel cell modules of the fuel cell power generation group is provided with a fuel input end for connecting natural gas outputted from the natural gas output end of the micro gasification station. The multi-energy supply system of the micro-grid and the micro-gas network according to claim 9 , wherein the fuel input end of each fuel cell module of the fuel cell power generation group is provided with at least one input control valve, An input control valve is coupled to the natural gas output of the micro gasification station to control the natural gas input to the fuel cell module. The multi-energy supply system of the micro-grid and the micro-gas network according to claim 1, wherein each fuel cell module of the fuel cell power generation group is provided with a power generation end, and the power generation end is connected to the power output end. The multi-energy supply system of the micro-grid and the micro-gas network according to the first aspect of the patent application, wherein each fuel cell module of the fuel cell power generation group is provided with a hot gas output end and a hot water output end for respectively outputting Hot gas and hot water by-products are given to the micro gasification station. The multi-energy supply system of the micro-grid and the micro-gas network described in claim 12, wherein a hot water connection between the hot water output end of the fuel cell module of the fuel cell power generation group and the micro gasification station is connected The sink is used to temporarily store hot water and provide hot water by-products. The multi-energy supply system of the micro-grid and the micro-gas network according to claim 1, wherein the power output end of the fuel cell power generation group is connected to at least one electric load sensor and the electric circuit breaker for sensing The power load capacity of the output power is controlled and the power output is controlled or the power output is cut off.