Control method and control device of power supply system and power supply system

Abstract

The invention relates to a control method and device of a power supply system and the power supply system. The method comprises the steps that under the condition that an energy storage unit is in a rechargeable state, the output power of a gas turbine power generation unit is adjusted according to the output power condition of the gas turbine power generation unit and the operation state of a standby power generation unit, so that charging of the energy storage unit is completed; according to the method, under the conditions that the energy storage unit is in the rechargeable state and the current output power of the gas turbine power generation unit is smaller than the rated output power, the waste heat utilization technology is adopted, and the standby power generation unit can be charged according to the operation state of the standby power generation unit. And the output power of the gas turbine power generation unit is adjusted according to the difference value between the current output power and the rated output power of the gas turbine power generation unit, so that the energy storage unit is charged, and the power supply stability is improved.

Description

Technical Field

[0001] The present application relates to the field of electric power technology, and in particular to a control method, a control device and a power supply system. Background Art

[0002] In the fields of petroleum and natural gas, chemical industry, energy and electricity, gas turbines and energy storage devices are usually used to supply power to electrical equipment. When the energy storage device needs to be charged, the gas turbine will allocate a part of the output electricity to charge the energy storage device.

[0003] However, when operating in winter or in areas with extremely cold or changeable temperatures, energy storage equipment is affected by the ambient temperature and needs to be charged frequently. At this time, due to the output limitation of the gas turbine and the lack of assistance from the energy storage equipment, once the gas turbine extracts part of its power to charge the energy storage equipment, there may be a risk of insufficient available power during critical operations, resulting in poor power supply stability. Summary of the invention

[0004] Based on this, it is necessary to provide a control method, a control device and a power supply system for a power supply system that can improve power supply stability in order to address the above technical problems.

[0005] In a first aspect, the present application provides a control method for a power supply system, the power supply system comprising an energy storage unit, and a gas turbine power generation unit and a standby power generation unit respectively connected to the energy storage unit; the method comprises:

[0006] When the energy storage unit is in a chargeable state, comparing the current output power of the gas turbine power generation unit with the rated output power of the gas turbine power generation unit;

[0007] When the current output power of the gas turbine power generation unit is less than the rated output power, the output power of the gas turbine power generation unit is adjusted based on the operating status of the standby power generation unit and the difference between the current output power and the rated output power of the gas turbine power generation unit until the energy storage unit enters an unchargeable state.

[0008] In one embodiment, based on the operating state of the standby power generation unit and the difference between the current output power and the rated output power of the gas turbine power generation unit, adjusting the output power of the gas turbine power generation unit includes:

[0009] If the standby power generation unit is in the power generation state, the output power of the gas turbine power generation unit is adjusted to the rated output power, and the output power of the standby power generation unit is reduced, wherein the output power of the standby power generation unit is reduced by an amount equal to the difference;

[0010] If the standby power generation unit is in an idle state, the output power of the gas turbine power generation unit is adjusted to the rated output power.

[0011] In one embodiment, the method further comprises:

[0012] When the current output power of the gas turbine power generation unit is equal to the rated output power, it is determined whether to control the standby power generation unit to enter the power generation state according to the operation requirements, and when it is determined that the standby power generation unit enters the power generation state, the step of comparing the current output power of the gas turbine power generation unit with the rated output power of the gas turbine power generation unit is returned to execute the above-mentioned step of comparing the current output power of the gas turbine power generation unit with the rated output power of the gas turbine power generation unit.

[0013] In one embodiment, the method further comprises:

[0014] When confirming that the current output power of the gas turbine power generation unit meets the operation requirements, compare the current output power of the gas turbine power generation unit with the rated output power;

[0015] When the current output power of the gas turbine power generation unit is less than the rated output power, the output power of the gas turbine power generation unit is increased to ensure that the current output power of the gas turbine power generation unit meets the operating requirements. When the current output power of the gas turbine power generation unit is equal to the rated output power, it is determined whether the energy storage unit is in a chargeable state.

[0016] In one embodiment, the method further comprises:

[0017] When it is confirmed that the current output power of the gas turbine power generation unit does not meet the operation requirements, when the energy storage unit is in a dischargeable state, the energy storage power supply mode is entered. The energy storage power supply mode is used to represent the joint power generation of the gas turbine power generation unit and the energy storage unit;

[0018] When it is confirmed that the current output power of the gas turbine power generation unit does not meet the operational requirements and the energy storage unit is in a non-dischargeable state, it is confirmed to enter the backup power supply mode based on the operating state of the backup power generation unit. The backup power supply mode is used to represent that the gas turbine power generation unit and the backup power generation unit generate electricity together.

[0019] In one embodiment, the method further comprises:

[0020] When the current output power of the gas turbine power generation unit is less than the rated output power, the output power of the gas turbine power generation unit is increased to ensure that the current output power of the gas turbine power generation unit meets the operating requirements. When the current output power of the gas turbine power generation unit is less than the rated output power, the output power of the gas turbine power generation unit continues to be increased, and the process returns to execute the above-mentioned step of comparing the current output power of the gas turbine power generation unit with the rated output power.

[0021] In a second aspect, the present application further provides a control device for a power supply system, the power supply system comprising an energy storage unit, and a gas turbine power generation unit and a standby power generation unit respectively connected to the energy storage unit; the device comprises:

[0022] A comparison module, used for comparing the current output power of the gas turbine power generation unit with the rated output power of the gas turbine power generation unit when the energy storage unit is in a chargeable state;

[0023] The adjustment module is used to adjust the output power of the gas turbine power generation unit when the current output power of the gas turbine power generation unit is less than the rated output power, based on the operating state of the standby power generation unit and the difference between the current output power of the gas turbine power generation unit and the rated output power, until the energy storage unit enters an unchargeable state.

[0024] In a third aspect, the present application further provides a control system, including a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above method when executing the computer program.

[0025] In a fourth aspect, the present application also provides a power distribution device, including the above-mentioned control system.

[0026] In a fifth aspect, the present application further provides a power supply system, the power supply system comprising:

[0027] Gas turbine power generation unit;

[0028] Standby power generation unit;

[0029] The energy storage unit is connected to the gas turbine power generation unit and the standby power generation unit respectively;

[0030] A control unit, configured to execute the steps of the above method;

[0031] The power distribution equipment is respectively connected to the control unit, the energy storage unit, the gas turbine power generation unit and the standby power generation unit. The power distribution equipment is also used to connect the operating power equipment, and to selectively control the on and off of the electrical connection between the energy storage unit, the gas turbine power generation unit, the standby power generation unit and the operating power equipment based on the instructions output by the control unit.

[0032] In one embodiment, the gas turbine power generation unit includes a plurality of gas turbine generator sets, each of which is connected to a power distribution device via a cable;

[0033] The energy storage unit includes a plurality of battery sub-skids and a plurality of energy storage control sub-skids, each battery sub-skid is connected to each energy storage control sub-skid one by one, and each battery sub-skid is connected to the power distribution equipment through a first cable;

[0034] The backup power generation unit includes a plurality of backup power generation devices, each of which is connected to each energy storage control sub-skid via a second cable and a pipeline, and each of which is connected to each battery sub-skid via a pipeline.

[0035] In one of the embodiments, the power supply system further includes a first supply unit and a second supply unit, wherein the first supply unit and the second supply unit are both used to provide fuel;

[0036] The first supply unit is connected to each gas turbine generator set respectively, and the second supply unit is connected to each standby power generation equipment respectively.

[0037] In one embodiment, the first supply unit includes a first fuel processing device, and the second supply unit includes a second fuel processing device;

[0038] The first fuel processing equipment is connected to each gas turbine generator set through a first pipeline, and the second fuel processing equipment is connected to each standby power generation equipment through a second pipeline.

[0039] In one of the embodiments, the power supply system further includes a first supply unit and a second supply unit, wherein the first supply unit and the second supply unit are both used to provide fuel;

[0040] The first supply unit is connected to each gas turbine generator set and the second supply unit respectively, and the second supply unit is connected to each standby power generation equipment.

[0041] In one embodiment, the first supply unit includes a first fuel processing device, and the second supply unit includes a second fuel processing device;

[0042] The first fuel processing equipment is connected to each gas turbine generator set and the second fuel processing equipment through a first pipeline, and the second fuel processing equipment is connected to each standby power generation equipment through a second pipeline.

[0043] In one of the embodiments, the power supply system further comprises a supply unit, wherein the supply unit is used to provide fuel;

[0044] The supply unit is connected to each gas turbine generator set and each standby power generation equipment respectively.

[0045] In one embodiment, the supply unit includes a fuel processing device;

[0046] The fuel processing equipment is connected to each gas turbine generator set and each standby power generation equipment through a first pipeline.

[0047] The control method, control device and power supply system of the power supply system above adjust the output power of the gas turbine generator unit according to the output power of the gas turbine generator unit and the operating state of the standby generator unit when the energy storage unit is in a chargeable state, so as to complete the charging of the energy storage unit. In the present application, when the energy storage unit is in a chargeable state and the current output power of the gas turbine generator unit is less than the rated output power, the waste heat utilization technology is adopted to adjust the output power of the gas turbine generator unit according to the operating state of the standby generator unit and the difference between the current output power and the rated output power of the gas turbine generator unit, so as to realize the charging of the energy storage unit. Compared with the traditional power supply operation of the gas turbine combined with the energy storage, when the energy storage needs to be charged, the gas turbine will divide a part of the output electricity to charge the energy storage, thereby causing the problem of poor power supply stability. The waste heat of the gas turbine generator unit is used to improve the operating environment temperature of the energy storage unit, thereby improving the power supply stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0049] Figure 1 is a structural block diagram of a power supply system in one embodiment;

[0050] Figure 2 is a connection diagram of a power supply system in one embodiment;

[0051] Figure 3 is a flow chart of a control method of a power supply system in one embodiment;

[0052] Figure 4 is a flow chart of a control method of a power supply system in one embodiment;

[0053] Figure 5 is a flow chart of a control method of a power supply system in another embodiment;

[0054] Figure 6 is a structural block diagram of a control device of a power supply system in one embodiment;

[0055] Figure 7 is an internal structure diagram of a computer device in one embodiment;

[0056] Figure 8 is a connection diagram of a power supply system including two supply units in one embodiment;

[0057] Fig. 9 is a connection diagram of a power supply system including two supply units in another embodiment;

[0058] Fig.10 FIG. 1 is a connection diagram of a power supply system including a supply unit in an embodiment. DETAILED DESCRIPTION

[0059] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0061] It can be understood that the terms "first", "second", etc. used in the present application can be used in this article to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element.

[0062] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0063] It can be understood that “at least one” means one or more, “plurality” means two or more, and “at least a portion of an element” means a part or all of an element.

[0064] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0065] Among the related technologies, the current status of gas turbine generator technology is as follows: ① From its establishment to the commercialization stage, the core technology mainly solves the problems of high construction project investment cost and low maturity of technical solutions. Since its rise in the 1970s, the technology of gas turbine generator sets has just emerged. Due to the immaturity of technical solutions, the project investment is greater than the traditional heating solution, which is not easily accepted by the market. At this time, the innovative technology revolves around how to reduce construction costs and obtain relevant technological progress. Through the continuous advancement of technology, electric heating has gradually developed into a competitive solution. ② From commercial application to the present, the main problems to be solved are how to improve the degree of automation through innovation, develop heating products suitable for various fields (such as explosion-proof measures for flammable and explosive places, self-limiting temperature technology with over-temperature hazards, etc.), focus on further reducing the cost of engineering construction, and improving the modularization and standardization of components. At present, it has been widely used in the fields of petroleum and natural gas, chemical industry, civil and commercial, energy and electricity. Similar to the above standard application scenarios, the existing gas turbine generator technology is relatively mature; but for specific application technologies in certain fields, further innovation and exploration are needed.

[0066] In the fields of oil and gas, chemical industry, energy and electricity, especially in the process of oil / gas electric fracturing and drilling operations, the power supply system is often composed of gas turbines and energy storage equipment to supply power to electrical equipment, such as Figure 1 As shown, the gas turbine 130 (hereinafter referred to as the gas turbine) cooperates with the energy storage device 120 to supply power to the electrical equipment 110. When the energy storage device 120 needs to be charged, the gas turbine 130 uses a portion of the output electricity to charge the energy storage device 120. In addition, some operation sites use black start diesel generators in cooperation with gas turbines for power supply operations, especially North American electric fracturing operation sites. However, according to the current international average cost per unit calorific value of oil and gas, the unit price of diesel is higher than that of gas, and the black start diesel generator only supplies power to the outside, which has a high cost problem.

[0067] In the prior art, in the power supply operation of the gas turbine in conjunction with the energy storage device, in order to save equipment investment and increase system utilization, the energy storage device will be used as a peak-shaving and valley-filling application. When the energy storage device needs to be charged, it will adjust its control mode and transfer a part of the power originally supplied by the gas turbine to charge the energy storage device; in actual operation, at least the following problems are included: ① In the emergency link of the operation, such as the critical moment of seam making, the peak power consumption stage, the gas turbine high load and the energy storage device need to supply power to the outside. Many operations are continuous operations, and it is not possible to match the discharge period of the energy storage with the peak power consumption period. It often happens that during the peak power consumption of the operation, the energy storage device needs to be charged due to power consumption. At this time, due to the output limitation of the gas turbine and the lack of the assistance of the energy storage device, once part of the power is extracted to charge the energy storage device, there is a risk of insufficient power available for key operations. Once this happens, it will affect the stability of power supply for fracturing or drilling, etc., or even affect the interruption of key construction, and even cause the occurrence of machine tripping, with the risk of well blockage. ② By setting up a waste heat utilization device, the power supply burden of the gas turbine can be reduced. However, most of the waste heat utilization system devices are fixed and need to be broken up and transported to the site for assembly. The equipment of these gas turbine waste heat utilization technologies is large in size and medium in weight. Taking a 15MW gas turbine as an example, a waste heat utilization device of a certain model with conventional technology has a waste heat boiler that is 26m long and 25m high. If it is broken up and assembled on site, on-site installation and commissioning will take a long time, and there is a problem that it cannot adapt to the current mainstream fracturing and drilling operations. The current business needs require rapid installation and construction, and then rapid departure from the site for the next operation. The existing waste heat utilization devices cannot meet the above needs. ③ When working in winter or in areas with extremely cold or changeable temperatures, if the ambient temperature is very low, it is necessary to increase the charging and discharging time of the energy storage equipment, and the gas turbine generator set needs to reduce the power output to the outside, preheat the energy storage equipment and charge it more frequently. The frequency of discharging and charging of the energy storage equipment is switched more frequently, and there are objective conditions that are difficult to predict, which aggravates the increase in the risk of affecting the stable power supply of key operations in the existing technology, or the existing technology heats the ambient temperature first and then charges the energy storage equipment when charging, resulting in the problem of too long charging time for the energy storage equipment. ④ Diesel generator sets are equipped for some on-site operations to power the gas turbine function or charge the energy storage. However, the diesel generator set has a single function and has the problem of high fuel cost and fuel utilization. When using energy storage equipment to power the gas turbine, one purpose is to increase the gas-to-electricity ratio of the gas turbine generator set, thereby reducing the operating cost. However, due to the high price of diesel relative to gas, if a diesel generator set is used for auxiliary power supply, the attractiveness of energy storage with the gas turbine will be greatly reduced, affecting the application of this existing technology.

[0068] In order to solve the above problems, the present application relates to the technical field of gas turbine power generation and waste heat utilization. Specifically, it provides a low-cost control method and power supply system that utilizes waste heat from power generation to solve the problem of poor power supply stability caused by the gas turbine in the energy storage device cooperating with the gas turbine generator set once the gas turbine extracts part of the power to charge the energy storage device.

[0069] The control method of the power supply system provided in the embodiment of the present application can be applied to Figure 2 In the application environment shown. Among them, the gas turbine power generation unit 0-5101 and the energy storage unit 0-4101 are connected to the power distribution equipment 502 through the cable 0-503, the standby power generation unit 0-1101 is connected to the energy storage unit 0-4101 through the cable 105-1, the standby power generation unit 0-1101 is connected to the pump unit 107, the pump unit 107 is connected to the energy storage unit 0-4101 through the pipeline 103-1 to realize the input of the hot fluid for heating of the energy storage unit 0-4101, the standby power generation unit 0-1101 is connected to the fuel processing equipment 102 through the pipeline 101-2, the fuel processing equipment 102 is connected to the fuel 100 through the pipeline 101-1, the power distribution equipment 502 is connected to the operating power equipment 0-6101, and the operating power equipment 0-6101 is connected to the operated object 50 (such as a wellhead with fracturing) through the line 6110; in this application, the energy storage unit 0-4101 is in a rechargeable state, and the gas turbine power generation unit 0-510 1 is less than the rated output power, the waste heat utilization technology is used to improve the operating environment temperature of the energy storage unit 0-5101, and the output power of the gas turbine generating unit 0-5101 is adjusted according to the operating state of the standby power generation unit 0-1101 and the difference between the current output power of the gas turbine generating unit 0-5101 and the rated output power, so as to realize the charging of the energy storage unit 0-5101. Compared with the traditional gas turbine combined with energy storage in the power supply operation, when the energy storage needs to be charged, the gas engine will divide a part of the output power to charge the energy storage, which leads to the problem of poor power supply stability. The waste heat of the standby power generation unit 0-1101 is used to improve the operating environment temperature of the energy storage unit 0-5101, and the power supply stability is improved. At the same time, a low-cost waste heat utilization device, that is, the standby power generation unit 0-1101, is adopted to realize the mobility and rapid commissioning and withdrawal of the charging and waste heat utilization devices.

[0070] In an exemplary embodiment, Figure 3 As shown, a control method for a power supply system is provided, and the method is applied to Figure 2 The power distribution equipment in the example is used as an example to illustrate the method, which includes:

[0071] S302: When the energy storage unit is in a chargeable state, compare the current output power of the gas turbine power generation unit with the rated output power of the gas turbine power generation unit.

[0072] Among them, the rated output power of the gas turbine power generation unit can be set according to actual conditions and is not limited in the embodiments of the present application; it should be noted that the rated output power is the maximum output power of the gas turbine power generation unit under current conditions, which is different from the rated power set at the factory. The maximum output power will be affected by temperature, humidity, conditions of the gas turbine itself, etc.

[0073] Specifically, the power distribution equipment can detect the current power of the energy storage unit and the current output power of the gas turbine power generation unit, determine whether the energy storage unit is in a rechargeable range based on the power (set according to actual conditions), and when it is determined that the energy storage unit is in a rechargeable range, that is, when the energy storage unit is in a rechargeable state, compare the current output power of the gas turbine power generation unit with the rated output power of the gas turbine power generation unit.

[0074] S304, when the current output power of the gas turbine power generation unit is less than the rated output power, the output power of the gas turbine power generation unit is adjusted based on the operating state of the standby power generation unit and the difference between the current output power of the gas turbine power generation unit and the rated output power until the energy storage unit enters an unchargeable state.

[0075] Specifically, if the current output power of the gas turbine generator unit is less than the rated output power, the difference between the current output power of the gas turbine generator unit and the rated output power can be converted into the charging part, and the difference is utilized, and combined with the operating status of the standby power generation unit, the output power of the gas turbine generator unit is adjusted until the energy storage unit feedback is full prompt, at which time the energy storage unit enters a non-rechargeable state.

[0076] In the control method of the above-mentioned power supply system, when the energy storage unit is in a rechargeable state and the current output power of the gas turbine power generation unit is less than the rated output power, the waste heat utilization technology is adopted to adjust the output power of the gas turbine power generation unit according to the operating state of the standby power generation unit and the difference between the current output power of the gas turbine power generation unit and the rated output power, so as to realize the charging of the energy storage unit. Compared with the traditional power supply operation of the gas turbine combined with energy storage, when the energy storage needs to be charged, the gas turbine will divide a part of the output electricity to charge the energy storage, which leads to the problem of poor power supply stability. The waste heat of the standby power generation unit is used to improve the ambient temperature of the energy storage unit, reduce the charging frequency of the energy storage unit, and improve the power supply stability.

[0077] In one embodiment, based on the operating state of the standby power generation unit and the difference between the current output power and the rated output power of the gas turbine power generation unit, adjusting the output power of the gas turbine power generation unit includes:

[0078] If the standby power generation unit is in the power generation state, the output power of the gas turbine power generation unit is adjusted to the rated output power, and the output power of the standby power generation unit is reduced, wherein the output power of the standby power generation unit is reduced by an amount equal to the difference;

[0079] If the standby power generation unit is in an idle state, the output power of the gas turbine power generation unit is adjusted to the rated output power.

[0080] Specifically, the power distribution equipment can directly obtain the operating status of the standby power generation unit. If the standby power generation unit is in the power generation state, because the current output power of the gas turbine power generation unit is less than the rated output power, the gas turbine power generation unit still has spare power to charge the energy storage unit. The output power of the gas turbine power generation unit is adjusted to the rated output power, and the output power of the standby power generation unit is reduced. The reduced output power is the difference between the current output power of the gas turbine power generation unit and the rated output power, thereby realizing the utilization of waste heat. If the standby power generation unit is in an idle state, the output power of the gas turbine power generation unit is directly adjusted to the rated output power, and the excess output power is used to charge the energy storage unit, thereby realizing the utilization of waste heat.

[0081] In the embodiment of the present application, the output power of the gas turbine power generation unit is adjusted according to the different operating states of the standby power generation unit to achieve waste heat utilization and improve power supply stability.

[0082] In one embodiment, the method further comprises:

[0083] When the current output power of the gas turbine power generation unit is equal to the rated output power, it is determined whether to control the standby power generation unit to enter the power generation state according to the operation requirements, and when it is determined that the standby power generation unit enters the power generation state, the step of comparing the current output power of the gas turbine power generation unit with the rated output power of the gas turbine power generation unit is returned to execute the above-mentioned step of comparing the current output power of the gas turbine power generation unit with the rated output power of the gas turbine power generation unit.

[0084] Exemplarily, the operation demand can be represented by a load demand, wherein the load demand can be obtained based on actual conditions and is not limited in the embodiments of the present application.

[0085] Specifically, when the current output power of the gas turbine power generation unit is equal to the rated output power, it can be understood that at this time the gas turbine power generation unit has no spare power to charge the energy storage unit. At this time, it can be determined whether to control the standby power generation unit to enter the power generation state according to the load demand.

[0086] In practical applications, when the current output power of the gas turbine power generation unit is equal to the rated output power, the standby power generation unit can enter the power generation state or not. When the load demand is less than or equal to the current output power, the standby power generation unit does not enter the power generation state. When the load demand is greater than the current output power, the standby power generation unit is controlled to enter the power generation state.

[0087] Taking the determination of controlling the standby power generation unit to enter the power generation state as an example, in the process of the standby power generation unit charging the energy storage unit, the output power of the gas turbine power generation unit may change according to the change of the ambient temperature, and it is necessary to re-execute the above-mentioned step of comparing the current output power of the gas turbine power generation unit with the rated output power of the gas turbine power generation unit to re-judge whether the gas turbine power generation unit has spare power for power generation. In the embodiment of the present application, when the current output power of the gas turbine power generation unit is equal to the rated output power and the operation demand is greater than the current output power, the standby power generation unit is controlled to enter the power generation state to supply power to the energy storage unit, and the current output power of the gas turbine power generation unit is re-compared with the rated output power, so that the standby power generation unit is used to charge the energy storage unit when the gas turbine power generation unit has no spare power, thereby improving the power supply stability.

[0088] In order to facilitate the understanding of those skilled in the art, the control method of the power supply system is described below with reference to a specific example. Figure 4 As shown, the energy storage is represented as an energy storage unit, the gas engine is represented as a gas engine power generation unit, and the standby gas engine is represented as a standby power generation unit.

[0089] The power distribution equipment checks the current power of the energy storage and determines whether the energy storage is in the chargeable range based on the power. If not, it returns to the step of re-detecting the current power of the energy storage (B0). If so, it determines whether the processing of the gas turbine can be converted to the charging part, that is, the current output power of the gas turbine power generation unit is compared with the rated output power of the gas turbine power generation unit.

[0090] When the output of the gas turbine can be converted to a charging part, that is, the current output power of the gas turbine power generation unit is less than the rated output power, it is determined whether the standby gas generator is being charged. If so, the power generation of the standby gas generator is reduced by the difference between the current output power of the gas turbine power generation unit and the rated output power, and the output power of the gas turbine power generation unit is adjusted to the rated output power; if not, the output power of the gas turbine power generation unit is directly adjusted to the rated output power. The power distribution equipment determines whether the current energy storage is full. If it is full, it gives feedback that the energy storage is full, and stops the charging action of the current charging part (gas turbine and / or standby gas turbine). If it is not full, it returns to the above step (B1) of determining whether the gas turbine processing can be converted to a charging part.

[0091] When the output of the gas engine does not have a part that can be converted to charging, that is, the current output power of the gas engine power generation unit is equal to the rated output power, the standby gas engine is called for charging, and the process returns to the above step of determining whether the gas engine processing has a part that can be converted to charging (B1) or rechecks the current power of the energy storage.

[0092] In one embodiment, the method further comprises:

[0093] When confirming that the current output power of the gas turbine power generation unit meets the operation requirements, compare the current output power of the gas turbine power generation unit with the rated output power;

[0094] When the current output power of the gas turbine power generation unit is less than the rated output power, the output power of the gas turbine power generation unit is increased to ensure that the current output power of the gas turbine power generation unit meets the operating requirements. When the current output power of the gas turbine power generation unit is equal to the rated output power, it is determined whether the energy storage unit is in a chargeable state.

[0095] Among them, the operation requirements can be set according to actual conditions and are not limited in the embodiments of the present application.

[0096] Specifically, when confirming that the current output power of the gas turbine power generation unit meets the operating requirements, the current output power of the gas turbine power generation unit is compared with the rated output power. Because the current output power of the gas turbine power generation unit may be affected by external factors, such as ambient temperature, which may lead to the situation that the operating requirements cannot be met, when the current output power of the gas turbine power generation unit is less than the rated output power, the output power of the gas turbine power generation unit is increased to ensure that the current output power of the gas turbine power generation unit meets the operating requirements; in the process of increasing the power output, when the current output power of the gas turbine power generation unit is equal to the rated output power, it can be understood that the upper limit of the output power of the gas turbine power generation unit has been reached at this time, then it is determined whether the energy storage unit is in a chargeable state. If the energy storage unit is in a chargeable state, the above-mentioned step of comparing the current output power of the gas turbine power generation unit with the rated output power of the gas turbine power generation unit is executed. If the energy storage unit is not in a chargeable state, the current power of the energy storage unit is repeatedly detected until the energy storage unit is in a chargeable state.

[0097] In an embodiment of the present application, by comparing the current output power of the gas turbine power generation unit with the rated output power after confirming that the current output power of the gas turbine power generation unit meets the operational requirements, when the current output power of the gas turbine power generation unit is less than the rated output power, in order to cope with the influence of external factors such as cold weather, the output power of the gas turbine power generation unit is increased to ensure that the current output power of the gas turbine power generation unit meets the operational requirements, and when the current output power of the gas turbine power generation unit is equal to the rated output power, it is confirmed whether the energy storage unit needs to be charged to avoid the problem of insufficient power during critical operations, thereby improving the power supply stability.

[0098] In one embodiment, the method further comprises:

[0099] When it is confirmed that the current output power of the gas turbine power generation unit does not meet the operation requirements, when the energy storage unit is in a dischargeable state, the energy storage power supply mode is entered. The energy storage power supply mode is used to represent the joint power generation of the gas turbine power generation unit and the energy storage unit;

[0100] When it is confirmed that the current output power of the gas turbine power generation unit does not meet the operational requirements and the energy storage unit is in a non-dischargeable state, it is confirmed to enter the backup power supply mode based on the operating state of the backup power generation unit. The backup power supply mode is used to represent that the gas turbine power generation unit and the backup power generation unit generate electricity together.

[0101] Specifically, when it is confirmed that the current output power of the gas turbine power generation unit does not meet the operational requirements, the energy storage unit is required to supply power at the same time. By obtaining the operating status of the energy storage unit, when the energy storage unit is in a dischargeable state, the energy storage power supply mode is entered, instructing the gas turbine power generation unit and the energy storage unit to supply power at the same time; when the energy storage unit is in a non-dischargeable state, it is determined whether the standby power generation unit is in a power supply state. If so, the standby power supply mode is entered, and the gas turbine power generation unit and the standby power generation unit supply power at the same time. If not, it is fed back that the current total output has reached its peak and the operational requirements need to be adjusted.

[0102] In the embodiment of the present application, by judging whether to enter the energy storage power supply mode or the backup power supply mode according to the respective operating states of the energy storage unit and the backup power generation unit, it is ensured that the operational requirements are met, power shortages are avoided, and the stability of power supply is improved.

[0103] In one embodiment, the method further comprises:

[0104] When the current output power of the gas turbine power generation unit is less than the rated output power, the output power of the gas turbine power generation unit is increased to ensure that the current output power of the gas turbine power generation unit meets the operating requirements. When the current output power of the gas turbine power generation unit is less than the rated output power, the output power of the gas turbine power generation unit continues to be increased, and the process returns to execute the above-mentioned step of comparing the current output power of the gas turbine power generation unit with the rated output power.

[0105] Specifically, when the current output power of the gas turbine power generation unit is less than the rated output power, the output power of the gas turbine power generation unit is increased to ensure that the current output power of the gas turbine power generation unit meets the operating requirements; in the process of increasing the power output, if the current output power of the gas turbine power generation unit is less than the rated output power, the output power of the gas turbine power generation unit continues to be increased to ensure the smooth progress of the power supply operation, and return to execute the above-mentioned step of comparing the current output power of the gas turbine power generation unit with the rated output power.

[0106] In an embodiment of the present application, when the current output power of the gas turbine generator unit is less than the rated output power, in order to cope with the influence of external factors such as cold weather, the output power of the gas turbine generator unit is increased to ensure that the current output power of the gas turbine generator unit meets the operational requirements, and when the current output power of the gas turbine generator unit is less than the rated output power, the output power of the gas turbine generator unit continues to be increased until the current output power of the gas turbine generator unit is equal to the rated output power, thereby avoiding the problem of insufficient power during critical operations and improving the stability of power supply.

[0107] In order to facilitate the understanding of those skilled in the art, the control method of the power supply system is described below in conjunction with another specific example. Figure 5 As shown, energy storage is represented as an energy storage unit, the gas turbine is represented as a gas turbine power generation unit, and the standby gas power generation is represented as a standby power generation unit.

[0108] The power distribution equipment checks the current operation demand. When it is determined that the total power demand is less than the current state of the gas turbine output, that is, confirms that the current output power of the gas turbine power generation unit meets the operation demand, and determines whether the gas turbine processing has reached the upper limit. If not, the output power of the gas turbine power generation unit is increased to ensure that the current output power of the gas turbine power generation unit meets the operation demand. After the gas turbine processing reaches the current demand, it is determined whether there is no surplus. If there is no surplus, the above-mentioned Figure 4 In step B0, if there is any surplus, the output power of the gas turbine power generation unit is increased, and the current output power of the gas turbine power generation unit is compared with the rated output power of the gas turbine power generation unit again (A4). If the gas turbine processing reaches the upper limit, it is determined whether the energy storage is in a dischargeable state (A3).

[0109] When it is determined that the total power demand is greater than the current state of the gas turbine output, that is, the current output power of the gas turbine power generation unit does not meet the operation demand, the power distribution equipment determines whether the energy storage is in a dischargeable state. If so, it enters the energy storage power supply mode and always detects the operation state of the energy storage (A2); if not, it determines whether the standby gas power generation is in a power supply state. If so, it enters the standby gas power generation power supply mode (standby power supply mode). If not, it feedbacks that the current total output has reached the peak and the operation demand needs to be adjusted, and returns to the step of checking the current operation demand (A0). The existing technology is operated in winter or in areas with severe or changeable temperatures. If the ambient temperature is very low, the charging time and the discharge time of the energy storage are increased, and the gas turbine generator set needs to reduce the useful external output power, preheat the energy storage and charge more frequently. The frequency of switching from discharge to charging is more frequent, and there are objective situations that are difficult to predict, which aggravates the risk of the existing technology affecting the stable power supply of key operations when switching from the gas turbine to the energy storage, and the problem that the ambient temperature is heated first and then charged during charging in the existing technology, resulting in a long charging time.

[0110] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0111] Based on the same inventive concept, the embodiment of the present application also provides a control device for a power supply system for implementing the control method of the power supply system involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiments of the control device for one or more power supply systems provided below can refer to the limitations of the control method for the power supply system above, and will not be repeated here.

[0112] In an exemplary embodiment, Figure 6 As shown, a control device 600 of a power supply system is provided, the power supply system includes an energy storage unit, and a gas turbine power generation unit and a standby power generation unit respectively connected to the energy storage unit; the device 600 includes:

[0113] A comparison module 601 is used to compare the current output power of the gas turbine power generation unit with the rated output power of the gas turbine power generation unit when the energy storage unit is in a chargeable state;

[0114] The adjustment module 602 is used to adjust the output power of the gas turbine power generation unit when the current output power of the gas turbine power generation unit is less than the rated output power, based on the operating state of the standby power generation unit and the difference between the current output power of the gas turbine power generation unit and the rated output power, until the energy storage unit enters an unchargeable state.

[0115] In one embodiment, the adjustment module 602 is further configured to adjust the output power of the gas turbine power generation unit to the rated output power and reduce the output power of the backup power generation unit if the backup power generation unit is in the power generation state, wherein the output power of the backup power generation unit is reduced by an amount equal to the difference;

[0116] If the standby power generation unit is in an idle state, the output power of the gas turbine power generation unit is adjusted to the rated output power.

[0117] In one embodiment, the device 600 also includes a control module for determining whether to control the standby power generation unit to enter a power generation state according to the operation requirements when the current output power of the gas turbine power generation unit is equal to the rated output power, and when it is determined that the standby power generation unit enters the power generation state, returning to execute the above-mentioned step of comparing the current output power of the gas turbine power generation unit with the rated output power of the gas turbine power generation unit.

[0118] In one embodiment, the device 600 further includes a control module, which is used to compare the current output power of the gas turbine power generation unit with the rated output power when confirming that the current output power of the gas turbine power generation unit meets the operation demand;

[0119] When the current output power of the gas turbine power generation unit is less than the rated output power, the output power of the gas turbine power generation unit is increased to ensure that the current output power of the gas turbine power generation unit meets the operating requirements. When the current output power of the gas turbine power generation unit is equal to the rated output power, it is determined whether the energy storage unit is in a chargeable state.

[0120] In one of the embodiments, the control module is further used to enter the energy storage power supply mode when it is confirmed that the current output power of the gas turbine power generation unit does not meet the operation requirements and the energy storage unit is in a dischargeable state. The energy storage power supply mode is used to characterize that the gas turbine power generation unit and the energy storage unit generate electricity together;

[0121] When it is confirmed that the current output power of the gas turbine power generation unit does not meet the operational requirements and the energy storage unit is in a non-dischargeable state, it is confirmed to enter the backup power supply mode based on the operating state of the backup power generation unit. The backup power supply mode is used to represent that the gas turbine power generation unit and the backup power generation unit generate electricity together.

[0122] In one of the embodiments, the control module is also used to increase the output power of the gas turbine power generation unit when the current output power of the gas turbine power generation unit is less than the rated output power to ensure that the current output power of the gas turbine power generation unit meets the operating requirements. When the current output power of the gas turbine power generation unit is less than the rated output power, the output power of the gas turbine power generation unit continues to be increased, and the step of comparing the current output power of the gas turbine power generation unit with the rated output power is returned to execute.

[0123] Each module in the control device of the above power supply system can be implemented in whole or in part by software, hardware and a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute the operations corresponding to each module.

[0124] In an exemplary embodiment, a control system is provided. The control system may be a server in a computer device, and its internal structure diagram may be as shown in FIG. Figure 7 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store job demand data. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a control method for a power supply system is implemented.

[0125] Exemplarily, the control system is disposed in the power supply system, and is not limited to within which device in the power supply system.

[0126] Those skilled in the art will understand that Figure 7 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0127] In an exemplary embodiment, a power distribution device is provided, comprising the above-mentioned control system.

[0128] Specifically, the power distribution equipment can be used to execute the above-mentioned control method of the power supply system.

[0129] In an exemplary embodiment, a power supply system is provided, the power supply system comprising:

[0130] Gas turbine power generation unit;

[0131] Standby power generation unit;

[0132] The energy storage unit is connected to the gas turbine power generation unit and the standby power generation unit respectively;

[0133] A control unit, configured to execute the steps of the above method;

[0134] The power distribution equipment is respectively connected to the control unit, the energy storage unit, the gas turbine power generation unit and the standby power generation unit. The power distribution equipment is also used to connect the operating power equipment, and to selectively control the on and off of the electrical connection between the energy storage unit, the gas turbine power generation unit, the standby power generation unit and the operating power equipment based on the instructions output by the control unit.

[0135] Among them, the type of operating electrical equipment can be set according to actual conditions and is not limited in the embodiments of the present application.

[0136] Specifically, the power distribution equipment is respectively connected to the control unit, the operating power equipment, the energy storage unit and the gas turbine power generation unit; the gas turbine power generation unit, the energy storage unit and the standby power generation unit are connected in sequence; wherein, the control unit controls the power distribution equipment according to the control method of the above-mentioned power supply system, thereby selectively controlling the on and off of the electrical connection between the energy storage unit, the gas turbine power generation unit, the standby power generation unit and the operating power equipment, and controlling the adjustment of the corresponding output power.

[0137] In one embodiment, if Figure 8 As shown, the gas turbine power generation unit 0-5101 includes multiple gas turbine generator sets (5101, 5201...5P01), and each gas turbine generator set is connected to the power distribution equipment 502 through a cable;

[0138] The energy storage unit 0-4101 includes a plurality of battery sub-skids (4101-1, 4201-1...4Q01-1) and a plurality of energy storage control sub-skids (4101-2, 4201-2...4Q01-2), each battery sub-skid and each energy storage control sub-skid are connected one by one, and each battery sub-skid is connected to the power distribution device 502 via a first cable;

[0139] The backup power generation unit 0-1101 includes a plurality of backup power generation devices (1101, 1201 ... 1N01), each of the backup power generation devices and each of the energy storage control sub-skids are connected via a second cable (1101-1, 1201-1 ... 1N01-1, 105-1) and a pipeline (103-1, 103-2, 103-3), and each of the backup power generation devices and each of the battery sub-skids are connected via a pipeline (103-1, 103-2, 103-3).

[0140] Wherein, N, P and Q are all integers greater than or equal to 1, and are not limited in the embodiments of the present application.

[0141] Specifically, if Figure 8As shown, the operating power-consuming equipment 0-6101 includes the first power-consuming equipment A (6101-1), the second power-consuming equipment A (6201-1) ... the Mth power-consuming equipment A (6M01-1) and the first power-consuming equipment B (6101-2), the second power-consuming equipment B (6201-2) ... the Mth power-consuming equipment B (6M01-2), wherein M is an integer greater than or equal to 1; the power distribution equipment 502 is connected to the first power-consuming equipment A (6101-1), the second power-consuming equipment A (6201-1) ... the Mth power-consuming equipment A (6M01-1), the first power-consuming equipment B (6101-2), the second power-consuming equipment B (6201-2) ... the Mth power-consuming equipment B (6M01-2) of the operating power-consuming equipment 0-6101 through the power cable 603-1 to realize the power transmission of the operating power.

[0142] The operating electrical equipment 0-6101 and the operated object 50 (such as a wellhead with fracturing) are also connected through the first liquid supply pipeline A (6101-3), the second liquid supply pipeline A (6201-3)...the Mth liquid supply pipeline A (6M01-3); at the same time, they are also connected through the first liquid supply pipeline B (6101-4), the second liquid supply pipeline A (6201-4)...the Mth liquid supply pipeline A (6M01-4) to meet the operating fluid supply under fracturing conditions. If it is drilling or sand mixing, the corresponding components can be replaced and will not be repeated; wherein M is an integer greater than or equal to 1.

[0143] It should be noted that the power distribution equipment 502 is used to execute one or more gas turbine generator sets and one or more battery sub-skids to perform operations such as power output distribution and safety protection at the same time or in different orders.

[0144] In the embodiment of the present application, a backup power generation unit is provided in the power supply system to solve the problem of insufficient power in the emergency operation. At the same time, the backup power generation unit provided in the embodiment of the present application supports mobility and rapid production and withdrawal, has a small size and low cost, and can adapt to the current mainstream fracturing and drilling operations.

[0145] It is understandable that the standby power generation equipment in the embodiment of the present application can be used to start or assist the power supply system to supply power. Among them, the standby power generation equipment can be a fuel oil generator set or a gas turbine generator set.

[0146] In one of the embodiments, the power supply system further includes a first supply unit and a second supply unit, wherein the first supply unit and the second supply unit are both used to provide fuel;

[0147] The first supply unit is connected to each gas turbine generator set respectively, and the second supply unit is connected to each standby power generation equipment respectively.

[0148] Specifically, the first supply unit is used to supply fuel to each gas turbine generator set; the second supply unit supplies fuel to each standby power generation equipment to ensure power stability during operation.

[0149] For example, the gas turbine generator set and the standby power generation equipment use the same fuel to generate electricity, which reduces the problem of high fuel costs required for the standby power generation equipment and reduces operating costs for users.

[0150] In the embodiment of the present application, a first supply unit and a second supply unit are provided to respectively provide fuel to each gas turbine generator set and each standby power generation equipment, thereby ensuring a stable fuel source during operation and improving power supply stability; at the same time, compared with the traditional technology of equipping a diesel generator set to supply energy for energy storage, the fuel cost is reduced, thereby reducing the operating cost of the power supply system.

[0151] In one embodiment, if Figure 8 As shown, the first supply unit includes a first fuel processing device 5-102, and the second supply unit includes a second fuel processing device 102;

[0152] The first fuel processing equipment 5-102 is connected to each gas turbine generator set (5101, 5201...5P01) through a first pipeline (5-101-2, 5-101-3), and the second fuel processing equipment 102 is connected to each standby power generation equipment (1101, 1201...1N01) through a second pipeline (101-3, 1101-2...1N01-2).

[0153] Among them, the types of the first pipeline and the second pipeline can be set according to actual conditions. In the embodiment of the present application, the C1 pipeline is taken as an example for explanation; P and N are both integers greater than or equal to 1.

[0154] Specifically, Figure 8 As shown, the first fuel processing equipment 5-102 is connected to the fuel 5-100 through the pipeline 5-101-1, and the second fuel processing equipment 102 is connected to the fuel 100 through the pipeline 101-1, so as to realize the fuel supply for each gas turbine generator set (5101, 5201...5P01) and each standby power generation equipment (1101, 1201...1N01).

[0155] Exemplarily, the fuel processing equipment may be a gas processing module, and the fuel may be fuel gas.

[0156] In one of the embodiments, the power supply system further includes a first supply unit and a second supply unit, wherein the first supply unit and the second supply unit are both used to provide fuel;

[0157] The first supply unit is connected to each gas turbine generator set and the second supply unit respectively, and the second supply unit is connected to each standby power generation equipment.

[0158] Specifically, the first supply unit is used to supply fuel to each gas turbine generator set; the first supply unit supplies fuel to each standby power generation equipment through the second supply unit to ensure power stability during operation.

[0159] For example, the gas turbine generator set and the standby power generation equipment use the same fuel to generate electricity, which reduces the problem of high fuel costs required for the standby power generation equipment and reduces operating costs for users.

[0160] In the embodiment of the present application, a first supply unit and a second supply unit are provided to respectively provide fuel to each gas turbine generator set and each standby power generation equipment, thereby ensuring a stable fuel source during operation and improving power supply stability; at the same time, compared with the traditional technology of equipping a diesel generator set to supply energy for energy storage, the fuel cost is reduced, thereby reducing the operating cost of the power supply system.

[0161] In one embodiment, if Fig. 9 As shown, the first supply unit includes a first fuel processing device 102, and the second supply unit includes a second fuel processing device 103;

[0162] The first fuel processing equipment 102 is connected to each gas turbine generator set (5101, 5201...5P01) and the second fuel processing equipment 103 through the first pipeline (5-101-2, 5-101-3, 5-101-4), and the second fuel processing equipment 103 is connected to each standby power generation equipment (1101, 1201...1N01) through the second pipeline (1101-2, 1201-2...1N01-2).

[0163] Among them, the types of the first pipeline and the second pipeline can be set according to actual conditions. In the embodiment of the present application, the C1 pipeline is taken as an example for explanation; P and N are both integers greater than or equal to 1.

[0164] Specifically, Fig. 9 As shown, the first fuel processing equipment 102 is connected to the fuel 100 via the pipeline 101-1, and the second fuel processing equipment 103 is connected to the first fuel processing equipment 102 via the pipeline 101-4, so as to realize the fuel supply for each gas turbine generator set (5101, 5201...5P01) and each standby power generation equipment (1101, 1201...1N01).

[0165] Exemplarily, the fuel processing equipment may be a gas processing module, and the fuel may be fuel gas.

[0166] In one of the embodiments, the power supply system further comprises a supply unit, wherein the supply unit is used to provide fuel;

[0167] The supply unit is connected to each gas turbine generator set and each standby power generation equipment respectively.

[0168] Specifically, the supply unit is used to provide fuel to each gas turbine generator set and each standby power generation equipment to ensure power stability during operation.

[0169] For example, the gas turbine generator set and the standby power generation equipment use the same fuel to generate electricity, which reduces the problem of high fuel costs required for the standby power generation equipment and reduces operating costs for users.

[0170] In the embodiment of the present application, a supply unit is provided to provide fuel to each gas turbine generator set and each standby power generation equipment respectively, thereby ensuring a stable fuel source during operation and improving the stability of power supply; at the same time, compared with the traditional technology of equipping a diesel generator set to supply energy for energy storage, the fuel cost is reduced, thereby reducing the operating cost of the power supply system.

[0171] In one embodiment, if Fig.10 As shown, the supply unit includes a fuel processing device 102;

[0172] The fuel processing equipment 102 is connected to each gas turbine generator set (5101, 5201...5P01) and each standby power generation equipment (1101, 1201...1N01) through the first pipeline (101-2, 101-3, 101-4).

[0173] Among them, the type of the first pipeline can be set according to actual conditions. In the embodiment of the present application, the C1 pipeline is taken as an example for explanation; P and N are both integers greater than or equal to 1.

[0174] Specifically, Fig.10 As shown, the first fuel processing equipment 102 is connected to the fuel 100 via the pipeline 101 - 1 to realize the fuel supply to each gas turbine generator set ( 5101 , 5201 . . . 5P01 ) and each standby power generation equipment ( 1101 , 1201 . . . 1N01 ).

[0175] Exemplarily, the fuel processing equipment may be a gas processing module, and the fuel may be fuel gas.

[0176] In an exemplary embodiment, a control system is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the control method of the power supply system when executing the computer program.

[0177] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the control method of the power supply system described above is implemented.

[0178] In one embodiment, a computer program product is provided, including a computer program, which implements the control method of the power supply system when executed by a processor.

[0179] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0180] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0181] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0182] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the present application. It should be noted that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A control method for a power supply system, characterized in that: The power supply system includes an energy storage unit, and a gas turbine power generation unit and a standby power generation unit respectively connected to the energy storage unit; the method includes: When the energy storage unit is in a chargeable state, comparing the current output power of the gas turbine power generation unit with the rated output power of the gas turbine power generation unit; When the current output power of the gas turbine power generation unit is less than the rated output power, the output power of the gas turbine power generation unit is adjusted based on the operating state of the standby power generation unit and the difference between the current output power of the gas turbine power generation unit and the rated output power until the energy storage unit enters an unchargeable state.

2. The method according to claim 1, characterized in that: Based on the operating state of the standby power generation unit and the difference between the current output power of the gas turbine power generation unit and the rated output power, adjusting the output power of the gas turbine power generation unit includes: If the standby power generation unit is in a power generation state, the output power of the gas turbine power generation unit is adjusted to the rated output power, and the output power of the standby power generation unit is reduced, wherein the output power of the standby power generation unit is reduced by an amount equal to the difference; If the standby power generation unit is in an idle state, the output power of the gas turbine power generation unit is adjusted to the rated output power.

3. The method according to claim 1, characterized in that The method further comprises: When the current output power of the gas turbine power generation unit is equal to the rated output power, it is determined whether to control the standby power generation unit to enter the power generation state according to the operation requirements, and when it is determined that the standby power generation unit enters the power generation state, the step of comparing the current output power of the gas turbine power generation unit with the rated output power of the gas turbine power generation unit is returned to execute.

4. The method according to claim 1, characterized in that The method further comprises: When confirming that the current output power of the gas turbine power generation unit meets the operation requirements, comparing the current output power of the gas turbine power generation unit with the rated output power; When the current output power of the gas turbine power generation unit is less than the rated output power, the output power of the gas turbine power generation unit is increased to ensure that the current output power of the gas turbine power generation unit meets the operating requirements. When the current output power of the gas turbine power generation unit is equal to the rated output power, it is determined whether the energy storage unit is in the rechargeable state.

5. The method according to claim 4, characterized in that The method further comprises: When it is confirmed that the current output power of the gas turbine power generation unit does not meet the operation requirement, when the energy storage unit is in the dischargeable state, the energy storage power supply mode is entered, and the energy storage power supply mode is used to indicate that the gas turbine power generation unit and the energy storage unit generate electricity together; When it is confirmed that the current output power of the gas turbine power generation unit does not meet the operating requirements, when the energy storage unit is in the non-dischargeable state, it is confirmed to enter the backup power supply mode based on the operating state of the backup power generation unit. The backup power supply mode is used to characterize that the gas turbine power generation unit and the backup power generation unit generate electricity together.

6. The method according to claim 4, characterized in that The method further comprises: When the current output power of the gas turbine power generation unit is less than the rated output power, the output power of the gas turbine power generation unit is increased to ensure that the current output power of the gas turbine power generation unit meets the operating requirements. When the current output power of the gas turbine power generation unit is less than the rated output power, the output power of the gas turbine power generation unit continues to be increased, and the process returns to execute the above step of comparing the current output power of the gas turbine power generation unit with the rated output power.

7. A control device for a power supply system, characterized in that: The power supply system includes an energy storage unit, and a gas turbine power generation unit and a standby power generation unit respectively connected to the energy storage unit; the device includes: A comparison module, used for comparing the current output power of the gas turbine power generation unit with the rated output power of the gas turbine power generation unit when the energy storage unit is in a chargeable state; The adjustment module is used to adjust the output power of the gas turbine power generation unit when the current output power of the gas turbine power generation unit is less than the rated output power, based on the operating state of the standby power generation unit and the difference between the current output power of the gas turbine power generation unit and the rated output power, until the energy storage unit enters an unchargeable state.

8. A control system, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A power distribution device, characterized in that: Includes the control system described in claim 8.

10. A power supply system, characterized in that: The power supply system comprises: Gas turbine power generation unit; Standby power generation unit; An energy storage unit, connected to the gas turbine power generation unit and the standby power generation unit respectively; A control unit for executing the method according to any one of claims 1 to 6; The power distribution equipment is respectively connected to the control unit, the energy storage unit, the gas turbine power generation unit and the backup power generation unit. The power distribution equipment is also used to connect the operating power equipment, and to selectively control the on and off of the electrical connection between the energy storage unit, the gas turbine power generation unit, the backup power generation unit and the operating power equipment based on the instructions output by the control unit.

11. The power supply system according to claim 10, characterized in that: The gas turbine power generation unit comprises a plurality of gas turbine generator sets, each of which is connected to the power distribution equipment via a cable; The energy storage unit includes a plurality of battery sub-skids and a plurality of energy storage control sub-skids, each of the battery sub-skids and each of the energy storage control sub-skids are connected one by one, and each of the battery sub-skids is connected to the power distribution equipment via a first cable; The backup power generation unit includes a plurality of backup power generation devices, each of the backup power generation devices and each of the energy storage control sub-skids are connected via a second cable and a pipeline respectively, and each of the backup power generation devices and each of the battery sub-skids are connected via the pipeline.

12. The power supply system according to claim 11, characterized in that: The power supply system further comprises a first supply unit and a second supply unit, wherein the first supply unit and the second supply unit are both used for providing fuel; The first supply unit is connected to each of the gas turbine generator sets respectively, and the second supply unit is connected to each of the standby power generation equipment respectively.

13. The power supply system according to claim 12, characterized in that: The first supply unit includes a first fuel processing device, and the second supply unit includes a second fuel processing device; The first fuel processing equipment is connected to each of the gas turbine generator sets through a first pipeline, and the second fuel processing equipment is connected to each of the standby power generation equipment through a second pipeline.

14. The power supply system according to claim 11, characterized in that: The power supply system further comprises a first supply unit and a second supply unit, wherein the first supply unit and the second supply unit are both used for providing fuel; The first supply unit is connected to each of the gas turbine generator sets and the second supply unit respectively, and the second supply unit is connected to each of the standby power generation equipment.

15. The power supply system according to claim 14, characterized in that: The first supply unit includes a first fuel processing device, and the second supply unit includes a second fuel processing device; The first fuel processing equipment is connected to each of the gas turbine generator sets and each of the standby power generation equipment through a first pipeline, and the second fuel processing equipment is connected to each of the standby power generation equipment through a second pipeline.

16. The power supply system according to claim 11, characterized in that: The power supply system further comprises a supply unit, wherein the supply unit is used to provide fuel; The supply unit is connected to each of the gas turbine generator sets and each of the standby power generation equipment respectively.

17. The power supply system according to claim 16, characterized in that: The supply unit includes a fuel processing device; The fuel processing equipment is respectively connected to each of the gas turbine generator sets and each of the standby power generation equipment through a first pipeline.

Images