Method and system for configuring active device of hydrogen-electricity coupling system

Abstract

The invention discloses a method and a system for configuring an active device of a hydrogen-electricity coupling system, and belongs to the technical field of active configuration. The method comprises the following steps: determining limiting factors of the hydrogen-electric coupling system for active device configuration; selecting specific typical operation mode data of the hydrogen-electricity coupling system, and configuring the installed capacity and the output of the new energy unit based on the limiting factors under the specific typical operation mode data; under the specific typical operation mode data, on the basis of limiting factors, simulation calculation is conducted on the hydrogen-electricity coupling system with the configured installed capacity of the new energy unit and the configured output of the new energy unit, a simulation result is judged, and a configuration scheme is output according to the judgment result; and performing active device configuration on the hydrogen-electricity coupling system according to the configuration scheme. Reasonable active configuration can be carried out on the hydrogen-electricity coupling system, and it is ensured that no operation risk occurs after grid connection of the hydrogen-electricity coupling system.

Description

Technical Field

[0001] The present invention relates to the technical field of active power configuration, and more particularly, to a method and system for configuring active power devices in a hydrogen-electricity coupling system. Background Art

[0002] Hydrogen fuel is an environmentally friendly energy that uses hydrogen and oxygen to react to generate energy. It has the characteristics of high efficiency and zero emissions, so it has gradually attracted attention. Especially in coastal areas with dense industry and commerce, there is a strong demand for nearby hydrogen, and hydrogen-electricity coupled microgrids have good application prospects. As the demand for hydrogen fuel grows, hydrogen production technology is bound to usher in a leap forward. Hydrogen is generally produced by electrolysis of water, accompanied by the production of oxygen.

[0003] In addition, because hydrogen production requires a lot of electricity, combined with the development of today's power system, that is, the vigorous development of new energy generation such as photovoltaics, wind power and other clean energy forms, a new hydrogen-electricity coupling system is proposed, that is, photovoltaics, wind power, hydrogen production loads and supporting equipment are bundled into a whole, and then connected to the grid and connected to the traditional AC power grid. Whether it is from the internal consideration of the hydrogen-electricity coupling system or the impact of the hydrogen-electricity coupling system on the overall power grid after grid connection, there must be a reasonable active configuration to ensure the stable operation of the power system. Summary of the invention

[0004] In view of the above problems, the present invention proposes a method for configuring active devices of a hydrogen-electricity coupling system, comprising:

[0005] Determine the limiting factors for active device configuration in hydrogen-electricity coupling systems;

[0006] Selecting specific typical operation mode data of the hydrogen-electric coupling system, and configuring the installed capacity and output of the new energy generator set based on the limiting factors under the specific typical operation mode data;

[0007] Under the specific typical operation mode data, based on the limiting factors, the hydrogen-electric coupling system configured with the installed capacity of the new energy generator and the output of the new energy generator is simulated and calculated, the simulation results are judged, and the configuration plan is output according to the judgment results;

[0008] Active devices of the hydrogen-electricity coupling system are configured according to the configuration scheme.

[0009] Optional limiting factors include: thermal stability limit of AC lines, short-circuit current level of busbars, and risk of new energy high-voltage grid disconnection.

[0010] Optional, simulation results, including:

[0011] Simulation results of short-circuit current of busbars within the hydrogen-electricity coupling system and busbars near the hydrogen-electricity coupling system;

[0012] Simulation calculation results of renewable energy transient voltage after various AC and DC faults in the vicinity of hydrogen-electric coupling system.

[0013] Optionally, under the specific typical operation mode data, based on the limiting factors, the hydrogen-electric coupling system configured with the installed capacity of the new energy generator and the output of the new energy generator is simulated and calculated, the simulation results are judged, and the configuration plan is output according to the judgment results, including:

[0014] Step 1: using the specific typical operation mode data, simulate and calculate the short-circuit current of the busbar in the hydrogen-electricity coupling system and the busbar in the vicinity of the hydrogen-electricity coupling system, and determine whether the short-circuit current of the busbar in the hydrogen-electricity coupling system and the busbar in the vicinity of the hydrogen-electricity coupling system exceeds the standard. If it exceeds the standard, reselect the specific typical operation mode data until the short-circuit current of the busbar in the hydrogen-electricity coupling system and the busbar in the vicinity of the hydrogen-electricity coupling system does not exceed the standard, and then enter step 2;

[0015] Step 2: Determine the re-selected specific typical operation mode data as the final mode data, use the final mode data to simulate and calculate the transient voltage of the new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system, and determine whether the transient voltage of the new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If it is within a reasonable range, determine the installed capacity and output of the new energy, and configure it according to the thermal stability limit of the hydrogen-electricity coupling system and the main grid interconnection line. If it is not within a reasonable range, proceed to step 3;

[0016] Step 3: After adding one phase regulator in the hydrogen-electricity coupling system, simulate and calculate to obtain the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system, and judge whether the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If not, continue to increase the number of phase regulators until the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range, and re-simulate and calculate to obtain the bus short-circuit current in the hydrogen-electricity coupling system and in the vicinity of the hydrogen-electricity coupling system, and judge whether the bus short-circuit current in the hydrogen-electricity coupling system and in the vicinity of the hydrogen-electricity coupling system exceeds the standard. If not, output the active power configuration of the hydrogen-electricity coupling system, and output the configuration plan according to the active power configuration. If it exceeds the standard, enter step 4;

[0017] Step 4: in the hydrogen-electricity coupling system after adding the phase regulator in step 3, one phase regulator is reduced until the short-circuit current of the busbar in the hydrogen-electricity coupling system and the hydrogen-electricity coupling system near the area does not exceed the standard. After determining the total number of phase regulators, it is determined whether the transient voltage of the new energy after various AC and DC faults in the hydrogen-electricity coupling system near the area is within a reasonable range. If it is within a reasonable range, the active power configuration of the hydrogen-electricity coupling system is output, and according to the active power configuration, a configuration plan is output. If it is not within a reasonable range, step 5 is performed;

[0018] Step 5: Reduce the output of new energy in the hydrogen-electricity coupling system, simulate and calculate the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system, and determine whether the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If not, continue to reduce the output of new energy in the hydrogen-electricity coupling system until the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range, output the active power configuration of the hydrogen-electricity coupling system, and output a configuration plan based on the active power configuration.

[0019] In another aspect, the present invention further provides a system for configuring active devices of a hydrogen-electricity coupling system, comprising:

[0020] Initial unit for determining limiting factors for active device configuration in hydrogen-electricity coupling systems;

[0021] A data selection unit, used to select specific typical operation mode data of the hydrogen-electric coupling system, and configure the installed capacity and output of the new energy generator set based on the limiting factors under the specific typical operation mode data;

[0022] A simulation calculation unit is used to perform simulation calculation on the hydrogen-electric coupling system configured with the installed capacity of the new energy generator and the output of the new energy generator under the specific typical operation mode data based on the limiting factors, judge the simulation result, and output the configuration plan according to the judgment result;

[0023] A configuration unit is used to configure active devices of the hydrogen-electricity coupling system according to the configuration scheme.

[0024] Optional limiting factors include: thermal stability limit of AC lines, short-circuit current level of busbars, and risk of new energy high-voltage grid disconnection.

[0025] Optional, simulation results, including:

[0026] Simulation results of short-circuit current of busbars within the hydrogen-electricity coupling system and busbars near the hydrogen-electricity coupling system;

[0027] Simulation calculation results of renewable energy transient voltage after various AC and DC faults in the vicinity of hydrogen-electric coupling system.

[0028] Optionally, the simulation calculation unit performs simulation calculation on the hydrogen-electric coupling system configured with the installed capacity of the new energy generator and the output of the new energy generator based on the limiting factors under the specific typical operation mode data, judges the simulation result, and outputs the configuration plan according to the judgment result, including:

[0029] Step 1: using the specific typical operation mode data, simulate and calculate the short-circuit current of the busbar in the hydrogen-electricity coupling system and the busbar in the vicinity of the hydrogen-electricity coupling system, and determine whether the short-circuit current of the busbar in the hydrogen-electricity coupling system and the busbar in the vicinity of the hydrogen-electricity coupling system exceeds the standard. If it exceeds the standard, reselect the specific typical operation mode data until the short-circuit current of the busbar in the hydrogen-electricity coupling system and the busbar in the vicinity of the hydrogen-electricity coupling system does not exceed the standard, and then enter step 2;

[0030] Step 2: Determine the re-selected specific typical operation mode data as the final mode data, use the final mode data to simulate and calculate the transient voltage of the new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system, and determine whether the transient voltage of the new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If it is within a reasonable range, determine the installed capacity and output of the new energy, and configure it according to the thermal stability limit of the hydrogen-electricity coupling system and the main grid interconnection line. If it is not within a reasonable range, proceed to step 3;

[0031] Step 3: After adding one phase regulator in the hydrogen-electricity coupling system, simulate and calculate to obtain the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system, and judge whether the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If not, continue to increase the number of phase regulators until the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range, and re-simulate and calculate to obtain the bus short-circuit current in the hydrogen-electricity coupling system and in the vicinity of the hydrogen-electricity coupling system, and judge whether the bus short-circuit current in the hydrogen-electricity coupling system and in the vicinity of the hydrogen-electricity coupling system exceeds the standard. If not, output the active power configuration of the hydrogen-electricity coupling system, and output the configuration plan according to the active power configuration. If it exceeds the standard, enter step 4;

[0032] Step 4: in the hydrogen-electricity coupling system after adding the phase regulator in step 3, one phase regulator is reduced until the short-circuit current of the busbar in the hydrogen-electricity coupling system and the hydrogen-electricity coupling system near the area does not exceed the standard. After determining the total number of phase regulators, it is determined whether the transient voltage of the new energy after various AC and DC faults in the hydrogen-electricity coupling system near the area is within a reasonable range. If it is within a reasonable range, the active power configuration of the hydrogen-electricity coupling system is output, and according to the active power configuration, a configuration plan is output. If it is not within a reasonable range, step 5 is performed;

[0033] Step 5: Reduce the output of new energy in the hydrogen-electricity coupling system, simulate and calculate the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system, and determine whether the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If not, continue to reduce the output of new energy in the hydrogen-electricity coupling system until the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range, output the active power configuration of the hydrogen-electricity coupling system, and output a configuration plan based on the active power configuration.

[0034] In yet another aspect, the present invention further provides a computing device, comprising: one or more processors;

[0035] a processor for executing one or more programs;

[0036] When the one or more programs are executed by the one or more processors, the above-described method is implemented.

[0037] In yet another aspect, the present invention further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed, the method described above is implemented.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] The present invention provides a method for configuring active devices of a hydrogen-electric coupling system, including: determining limiting factors for configuring active devices of the hydrogen-electric coupling system; selecting specific typical operating mode data of the hydrogen-electric coupling system, and configuring the installed capacity of new energy units and the output of new energy units based on the limiting factors under the specific typical operating mode data; performing simulation calculations on the hydrogen-electric coupling system after configuring the installed capacity of new energy units and the output of new energy units based on the limiting factors under the specific typical operating mode data, judging the simulation results, and outputting a configuration plan according to the judgment results; configuring active devices of the hydrogen-electric coupling system with the configuration plan. The present invention can reasonably configure the active power of the hydrogen-electric coupling system, ensuring that there will be no operating risks after the hydrogen-electric coupling system is connected to the grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a flow chart of the method of the present invention;

[0041] Figure 2 is a flow chart of an embodiment of the method of the present invention;

[0042] Figure 3 A diagram of the near-area power grid structure of a hydrogen-electric coupling system in scenario 1 of an embodiment of the method of the present invention;

[0043] Figure 4A diagram of the near-area power grid structure of a scenario dihydrogen-electric coupling system according to an embodiment of the method of the present invention;

[0044] Figure 5 It is a schematic diagram of the voltage at the Qingsihe New Energy machine terminal when a DC "3+1" fault occurs when no phase regulator is configured in an embodiment of the method of the present invention;

[0045] Figure 6 This is a schematic diagram of the voltage at the Qingsihe New Energy machine terminal when two phase regulators are configured in a DC "3+1" fault in an embodiment of the method of the present invention;

[0046] Figure 7 A schematic diagram of the voltage at the Qingsihe New Energy machine terminal of a DC "3+1" fault in an embodiment of the method of the present invention;

[0047] Figure 8 It is a structural diagram of the system of the present invention. DETAILED DESCRIPTION

[0048] Now, exemplary embodiments of the present invention are described with reference to the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely and to fully convey the scope of the present invention to those skilled in the art. The terms used in the exemplary embodiments shown in the accompanying drawings are not intended to limit the present invention. In the accompanying drawings, the same units / elements are marked with the same reference numerals.

[0049] Unless otherwise specified, the terms (including technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it is understood that the terms defined in commonly used dictionaries should be understood to have the same meanings as those in the context of the relevant fields, and should not be understood as idealized or overly formal meanings.

[0050] Embodiment 1:

[0051] The present invention proposes a method for configuring active devices of a hydrogen-electric coupling system, such as Figure 1 As shown, including:

[0052] Step 1, determine the limiting factors for active device configuration of the hydrogen-electricity coupling system;

[0053] Step 2: Select specific typical operation mode data of the hydrogen-electric coupling system, and configure the installed capacity and output of the new energy generator set based on the limiting factors under the specific typical operation mode data;

[0054] Step 3: Under the specific typical operation mode data, based on the limiting factors, simulate the hydrogen-electric coupling system configured with the installed capacity of the new energy generator and the output of the new energy generator, judge the simulation results, and output the configuration plan according to the judgment results;

[0055] Step 4: configuring active devices of the hydrogen-electricity coupling system according to the configuration scheme.

[0056] Among them, the limiting factors include: the thermal stability limit of the AC line, the short-circuit current level of the busbar, and the risk of new energy high-voltage grid disconnection.

[0057] The simulation results include:

[0058] Simulation results of short-circuit current of busbars within the hydrogen-electricity coupling system and busbars near the hydrogen-electricity coupling system;

[0059] Simulation calculation results of renewable energy transient voltage after various AC and DC faults in the vicinity of hydrogen-electric coupling system.

[0060] Wherein, under the specific typical operation mode data, based on the limiting factors, the hydrogen-electric coupling system configured with the installed capacity of the new energy generator and the output of the new energy generator is simulated and calculated, the simulation results are judged, and the configuration scheme is output according to the judgment results, including:

[0061] Step 1: using the specific typical operation mode data, simulate and calculate the short-circuit current of the busbar in the hydrogen-electricity coupling system and the busbar in the vicinity of the hydrogen-electricity coupling system, and determine whether the short-circuit current of the busbar in the hydrogen-electricity coupling system and the busbar in the vicinity of the hydrogen-electricity coupling system exceeds the standard. If it exceeds the standard, reselect the specific typical operation mode data until the short-circuit current of the busbar in the hydrogen-electricity coupling system and the busbar in the vicinity of the hydrogen-electricity coupling system does not exceed the standard, and then enter step 2;

[0062] Step 2: Determine the re-selected specific typical operation mode data as the final mode data, use the final mode data to simulate and calculate the transient voltage of the new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system, and determine whether the transient voltage of the new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If it is within a reasonable range, determine the installed capacity and output of the new energy, and configure it according to the thermal stability limit of the hydrogen-electricity coupling system and the main grid interconnection line. If it is not within a reasonable range, proceed to step 3;

[0063] Step 3: After adding one phase regulator in the hydrogen-electricity coupling system, simulate and calculate to obtain the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system, and judge whether the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If not, continue to increase the number of phase regulators until the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range, and re-simulate and calculate to obtain the bus short-circuit current in the hydrogen-electricity coupling system and in the vicinity of the hydrogen-electricity coupling system, and judge whether the bus short-circuit current in the hydrogen-electricity coupling system and in the vicinity of the hydrogen-electricity coupling system exceeds the standard. If not, output the active power configuration of the hydrogen-electricity coupling system, and output the configuration plan according to the active power configuration. If it exceeds the standard, enter step 4;

[0064] Step 4: in the hydrogen-electricity coupling system after adding the phase regulator in step 3, one phase regulator is reduced until the short-circuit current of the busbar in the hydrogen-electricity coupling system and the hydrogen-electricity coupling system near the area does not exceed the standard. After determining the total number of phase regulators, it is determined whether the transient voltage of the new energy after various AC and DC faults in the hydrogen-electricity coupling system near the area is within a reasonable range. If it is within a reasonable range, the active power configuration of the hydrogen-electricity coupling system is output, and according to the active power configuration, a configuration plan is output. If it is not within a reasonable range, step 5 is performed;

[0065] Step 5: Reduce the output of new energy in the hydrogen-electricity coupling system, simulate and calculate the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system, and determine whether the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If not, continue to reduce the output of new energy in the hydrogen-electricity coupling system until the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range, output the active power configuration of the hydrogen-electricity coupling system, and output a configuration plan based on the active power configuration.

[0066] The present invention will be further described below in conjunction with specific embodiments:

[0067] Example steps Figure 2 As shown, including:

[0068] Step 1: Select specific typical operation mode data. In this mode data, firstly, configure the installed capacity and output of new energy units according to the thermal stability limit of the hydrogen-electricity coupling system and the main grid interconnection line;

[0069] Step 2: Use the data of this mode to simulate and calculate whether the short-circuit current of the bus in the hydrogen-electric coupling system and the bus in the vicinity of the hydrogen-electric coupling system exceeds the standard. If the short-circuit current of the bus in the hydrogen-electric coupling system or the bus in the vicinity of the hydrogen-electric coupling system exceeds the standard, reselect the typical operation mode data until the short-circuit current of the bus in the hydrogen-electric coupling system and the bus in the vicinity of the hydrogen-electric coupling system does not exceed the standard, and then proceed to step 3;

[0070] Step 3: After determining the final mode data, calculate whether the transient voltage of the new energy source after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range, that is, determine whether the new energy unit has the risk of being disconnected from the grid. If the transient voltage of the new energy source after the fault is within a reasonable range, it can be considered that the unit installation and output of the new energy source can be configured according to the thermal stability limit of the interconnection line between the hydrogen-electricity coupling system and the main grid. If the transient voltage of the new energy source after the fault is not within a reasonable range, that is, the new energy source is at risk of being disconnected from the grid, then consider step 4;

[0071] Step 4: Add one more phase regulator to the hydrogen-electricity coupling system, and then calculate whether the transient voltage of the new energy source is within a reasonable range after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system. If not, continue to increase the number of phase regulators until the transient voltage of the new energy source is within a reasonable range after the fault. After the transient voltage of the new energy source is within a reasonable range, recalculate whether the short-circuit current of the busbar in the hydrogen-electricity coupling system and the vicinity of the hydrogen-electricity coupling system exceeds the standard. If the short-circuit current does not exceed the standard, finally output the active configuration of the hydrogen-electricity coupling system. If the short-circuit current exceeds the standard, proceed to step 5;

[0072] Step 5: Based on step 4, one phase regulator is reduced in the hydrogen-electricity coupling system until the short-circuit current of the busbar in the hydrogen-electricity coupling system and the hydrogen-electricity coupling system near the system does not exceed the standard. At this time, there is a total number of phase regulators, and then it is determined whether the transient voltage of the new energy after various AC and DC faults in the hydrogen-electricity coupling system near the system is within a reasonable range. If it is within a reasonable range, the active configuration of the hydrogen-electricity coupling system can be output at this time. If it is not within a reasonable range, proceed to step 6;

[0073] Step 6: Reduce the output of renewable energy in the hydrogen-electricity coupling system, and then calculate whether the transient voltage of renewable energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If not, continue to reduce the output of renewable energy in the hydrogen-electricity coupling system until the transient voltage of renewable energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range, and finally output the active configuration of the hydrogen-electricity coupling system.

[0074] In the PSD power system simulation software tool (PSD Power Tools), the small system data is used to establish two examples, scenario 1 and scenario 2. Scenario 1 and scenario 2 are as follows: Figure 3 and Figure 4 As shown;

[0075] Scenario 1: Configuration of new energy units in a 330kV hydrogen-electric coupling system with a weak grid structure

[0076] Build simulation data for the infinite system of new energy transmission. The Qingyu DC model is used as the UHV DC model. The DC voltage is ±800kV, the DC transmission power is 8000MW, and the AC power grids at the sending and receiving ends adopt the infinite system. The new energy collection station is connected to the sending end AC system through a 750kV line, and is connected to the UHV converter station through three 750kV lines. Qinggonghe, Qingerhe, and Qingsanhe are conventional new energy stations, and Qingsihe is a hydrogen-electricity coupling system station.

[0077] According to the active power configuration process, the installed capacity and output of Qingsihe's new energy generators are first configured according to the thermal stability limit of the hydrogen-electricity coupling system and the main grid interconnection line. The installed capacity of new energy is 1500MW, and the output is arranged to be 1200MW (80%), which is equivalent to the thermal stability limit of the 330kV line (the thermal stability limit of a single 330kV AC line is considered to be 1200MW).

[0078] Then, the short-circuit current of 750kV and 330kV busbars in the vicinity is calculated after Qingsihe station is connected to the power grid. The results are shown in Table 1. The rated breaking current of 750kV and 330kV busbars are both considered to be 63kA.

[0079] Table 1

[0080]

[0081] According to Table 1, the short-circuit current of the near-area busbar of the hydrogen-electric coupling system meets the requirements. The system stability and transient voltage rise of the new energy unit after various AC and DC faults are further calculated. Among them, the more serious fault is the "3+1" fault of DC. After the "3+1" fault of DC occurs, the transient voltage rise of the new energy unit in the hydrogen-electric coupling system reaches 0.319pu, and the new energy is at risk of disconnection from the grid, as shown in 5. At this time, the number of phase-shifting units configured is 0.

[0082] After configuring two 50MVar condensers, the transient voltage rise of the new energy unit is controlled within 0.3pu. Figure 6 shown.

[0083] The short-circuit current of the hydrogen-electric coupling system and the nearby busbar after the two phase-converting units are further checked and calculated. As shown in Table 2, it can be seen that the short-circuit current of the busbar does not exceed its rated breaking current.

[0084] Table 2

[0085]

[0086] From the above analysis, it can be seen that the configuration of the hydrogen-electricity coupling system is: the installed capacity of new energy is 1500MW, according to its 80% output of 1200MW, the hydrogen production load is 1200MW, and the thermal stability limit of the 330kV AC line is considered as 1200MW. In order to prevent the risk of new energy being disconnected from the grid, two 50MVar phase-shifting condensers are configured. The bus short-circuit current does not exceed its rated breaking current. The active configuration of the hydrogen-electricity coupling system meets the requirements.

[0087] Scenario 2: Configuration of new energy units in a 750kV hydrogen-electric coupling system with a weak grid structure

[0088] Build simulation data for the infinite system of new energy transmission. The Qingyu DC model is used as the UHV DC model. The DC voltage is ±800kV, the DC transmission power is 8000MW, and the AC power grids at the sending and receiving ends adopt the infinite system. The new energy collection station is connected to the sending end AC system through 3 750kV lines, and connected to the UHV converter station through 3 750kV lines. Qingyihe, Qingerhe, and Qingsihe are all hydrogen-electricity coupling system stations.

[0089] According to the active power configuration process, the installed capacity and output of Qingsihe's new energy generators are first configured according to the thermal stability limit of the hydrogen-electricity coupling system and the main grid tie line. The installed capacity of new energy generators is 1500MW, and the output is arranged to be 1200MW (80%), which is equivalent to the thermal stability limit of the 330kV line. Qingyihe, Qingerhe and Qingsihe have the same configuration.

[0090] Then, the short-circuit current of 750kV and 330kV busbars in the vicinity of Qingyihe, Qingerhe and Qingsihe stations are calculated after they are connected to the power grid. The results are shown in Table 3.

[0091] Table 3

[0092]

[0093] The short-circuit current of the near-area busbar of the hydrogen-electric coupling system meets the requirements, and the system stability and transient voltage rise at the machine end of the new energy unit after various AC and DC faults occur are further calculated.

[0094] After a DC "3+1" fault occurs, the transient voltage rise at the generator end of the new energy unit in the hydrogen-electric coupling system reaches 0.117pu, meeting the requirement that the transient voltage rise after the fault is within 0.3pu. Figure 7 shown.

[0095] From the above analysis, it can be seen that the configuration of the hydrogen-electricity coupling system is as follows: the installed capacity of new energy is 1500MW, according to its 80% output of 1200MW, the hydrogen production load is 1200MW, the thermal stability limit of the 330kV AC line is considered to be 1200MW, there is no risk of new energy being disconnected from the grid, and the busbar short-circuit current does not exceed its rated interrupting current. Three identical hydrogen-electricity coupling systems are configured at the collection station, and the active configuration of the collection station and the hydrogen-electricity coupling system meets the requirements.

[0096] Embodiment 2:

[0097] The present invention also proposes a system 200 for configuring active devices of a hydrogen-electricity coupling system, such as Figure 8 As shown, including:

[0098] Initial unit 201, used to determine the limiting factors for active device configuration of the hydrogen-electricity coupling system;

[0099] The data selection unit 202 is used to select specific typical operation mode data of the hydrogen-electric coupling system, and configure the installed capacity and output of the new energy generator set based on the limiting factors under the specific typical operation mode data;

[0100] The simulation calculation unit 203 is used to perform simulation calculation on the hydrogen-electric coupling system configured with the installed capacity of the new energy generator and the output of the new energy generator based on the limiting factors under the specific typical operation mode data, judge the simulation result, and output the configuration plan according to the judgment result;

[0101] The configuration unit 204 is used to configure active devices of the hydrogen-electricity coupling system according to the configuration scheme.

[0102] Among them, the limiting factors include: the thermal stability limit of the AC line, the short-circuit current level of the busbar, and the risk of new energy high-voltage grid disconnection.

[0103] The simulation results include:

[0104] Simulation results of short-circuit current of busbars within the hydrogen-electricity coupling system and busbars near the hydrogen-electricity coupling system;

[0105] Simulation calculation results of renewable energy transient voltage after various AC and DC faults in the vicinity of hydrogen-electric coupling system.

[0106] The simulation calculation unit 203 performs simulation calculation on the hydrogen-electric coupling system configured with the installed capacity of the new energy generator and the output of the new energy generator based on the limiting factors under the specific typical operation mode data, judges the simulation results, and outputs the configuration plan according to the judgment results, including:

[0107] Step 1: using the specific typical operation mode data, simulate and calculate the short-circuit current of the busbar in the hydrogen-electricity coupling system and the busbar in the vicinity of the hydrogen-electricity coupling system, and determine whether the short-circuit current of the busbar in the hydrogen-electricity coupling system and the busbar in the vicinity of the hydrogen-electricity coupling system exceeds the standard. If it exceeds the standard, reselect the specific typical operation mode data until the short-circuit current of the busbar in the hydrogen-electricity coupling system and the busbar in the vicinity of the hydrogen-electricity coupling system does not exceed the standard, and then enter step 2;

[0108] Step 2: Determine the re-selected specific typical operation mode data as the final mode data, use the final mode data to simulate and calculate the transient voltage of the new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system, and determine whether the transient voltage of the new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If it is within a reasonable range, determine the installed capacity and output of the new energy, and configure it according to the thermal stability limit of the hydrogen-electricity coupling system and the main grid interconnection line. If it is not within a reasonable range, proceed to step 3;

[0109] Step 3: After adding one phase regulator in the hydrogen-electricity coupling system, simulate and calculate to obtain the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system, and judge whether the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If not, continue to increase the number of phase regulators until the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range, and re-simulate and calculate to obtain the bus short-circuit current in the hydrogen-electricity coupling system and in the vicinity of the hydrogen-electricity coupling system, and judge whether the bus short-circuit current in the hydrogen-electricity coupling system and in the vicinity of the hydrogen-electricity coupling system exceeds the standard. If not, output the active power configuration of the hydrogen-electricity coupling system, and output the configuration plan according to the active power configuration. If it exceeds the standard, enter step 4;

[0110] Step 4: in the hydrogen-electricity coupling system after adding the phase regulator in step 3, one phase regulator is reduced until the short-circuit current of the busbar in the hydrogen-electricity coupling system and the hydrogen-electricity coupling system near the area does not exceed the standard. After determining the total number of phase regulators, it is determined whether the transient voltage of the new energy after various AC and DC faults in the hydrogen-electricity coupling system near the area is within a reasonable range. If it is within a reasonable range, the active power configuration of the hydrogen-electricity coupling system is output, and according to the active power configuration, a configuration plan is output. If it is not within a reasonable range, step 5 is performed;

[0111] Step 5: Reduce the output of new energy in the hydrogen-electricity coupling system, simulate and calculate the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system, and determine whether the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If not, continue to reduce the output of new energy in the hydrogen-electricity coupling system until the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range, output the active power configuration of the hydrogen-electricity coupling system, and output a configuration plan based on the active power configuration.

[0112] The present invention can reasonably configure the active power of the hydrogen-electricity coupling system, ensuring that no operation risk will occur after the hydrogen-electricity coupling system is connected to the grid.

[0113] Embodiment 3:

[0114] Based on the same inventive concept, the present invention also provides a computer device, which includes a processor and a memory, wherein the memory is used to store a computer program, the computer program includes program instructions, and the processor is used to execute the program instructions stored in the computer storage medium. The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. It is the computing core and control core of the terminal, which is suitable for implementing one or more instructions, and is specifically suitable for loading and executing one or more instructions in the computer storage medium to implement the corresponding method flow or corresponding functions, so as to implement the steps of the method in the above embodiment.

[0115] Embodiment 4:

[0116] Based on the same inventive concept, the present invention also provides a storage medium, specifically a computer-readable storage medium (Memory), which is a memory device in a computer device for storing programs and data. It is understandable that the computer-readable storage medium here can include both a built-in storage medium in a computer device and an extended storage medium supported by the computer device. The computer-readable storage medium provides a storage space, which stores the operating system of the terminal. In addition, one or more instructions suitable for being loaded and executed by a processor are also stored in the storage space, and these instructions can be one or more computer programs (including program codes). It should be noted that the computer-readable storage medium here can be a high-speed RAM memory or a non-volatile memory, such as at least one disk memory. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the steps of the method in the above embodiment.

[0117] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes. The schemes in the embodiments of the present invention may be implemented in various computer languages, for example, object-oriented programming language Java and literal scripting language JavaScript, etc.

[0118] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0119] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0120] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0121] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0122] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for configuring active devices in a hydrogen-electricity coupling system, characterized in that: include: Determine the limiting factors for active device configuration in hydrogen-electricity coupling systems; Selecting specific typical operation mode data of the hydrogen-electric coupling system, and configuring the installed capacity and output of the new energy generator set based on the limiting factors under the specific typical operation mode data; Under the specific typical operation mode data, based on the limiting factors, the hydrogen-electric coupling system configured with the installed capacity of the new energy generator and the output of the new energy generator is simulated and calculated, the simulation results are judged, and the configuration plan is output according to the judgment results; Active devices of the hydrogen-electricity coupling system are configured according to the configuration scheme.

2. The method according to claim 1, characterized in that The limiting factors include: thermal stability limit of AC lines, short-circuit current level of busbars and risk of new energy high voltage disconnection from the grid.

3. The method according to claim 1, characterized in that The simulation results include: Simulation results of short-circuit current of busbars within the hydrogen-electricity coupling system and busbars near the hydrogen-electricity coupling system; Simulation calculation results of renewable energy transient voltage after various AC and DC faults in the vicinity of hydrogen-electric coupling system.

4. The method according to claim 1, characterized in that: Under the specific typical operation mode data, based on the limiting factors, the hydrogen-electric coupling system configured with the installed capacity of the new energy generator and the output of the new energy generator is simulated and calculated, the simulation results are judged, and the configuration plan is output according to the judgment results, including: Step 1: using the specific typical operation mode data, simulate and calculate the short-circuit current of the busbar in the hydrogen-electricity coupling system and the busbar in the vicinity of the hydrogen-electricity coupling system, and determine whether the short-circuit current of the busbar in the hydrogen-electricity coupling system and the busbar in the vicinity of the hydrogen-electricity coupling system exceeds the standard. If it exceeds the standard, reselect the specific typical operation mode data until the short-circuit current of the busbar in the hydrogen-electricity coupling system and the busbar in the vicinity of the hydrogen-electricity coupling system does not exceed the standard, and then enter step 2; Step 2: Determine the re-selected specific typical operation mode data as the final mode data, use the final mode data to simulate and calculate the transient voltage of the new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system, and determine whether the transient voltage of the new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If it is within a reasonable range, determine the installed capacity and output of the new energy, and configure it according to the thermal stability limit of the hydrogen-electricity coupling system and the main grid interconnection line. If it is not within a reasonable range, proceed to step 3; Step 3: After adding one phase regulator in the hydrogen-electricity coupling system, simulate and calculate to obtain the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system, and judge whether the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If not, continue to increase the number of phase regulators until the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range, and re-simulate and calculate to obtain the bus short-circuit current in the hydrogen-electricity coupling system and in the vicinity of the hydrogen-electricity coupling system, and judge whether the bus short-circuit current in the hydrogen-electricity coupling system and in the vicinity of the hydrogen-electricity coupling system exceeds the standard. If not, output the active power configuration of the hydrogen-electricity coupling system, and output the configuration plan according to the active power configuration. If it exceeds the standard, enter step 4; Step 4: in the hydrogen-electricity coupling system after adding the phase regulator in step 3, one phase regulator is reduced until the short-circuit current of the busbar in the hydrogen-electricity coupling system and the hydrogen-electricity coupling system near the area does not exceed the standard. After determining the total number of phase regulators, it is determined whether the transient voltage of the new energy after various AC and DC faults in the hydrogen-electricity coupling system near the area is within a reasonable range. If it is within a reasonable range, the active power configuration of the hydrogen-electricity coupling system is output, and according to the active power configuration, a configuration plan is output. If it is not within a reasonable range, step 5 is performed; Step 5: Reduce the output of new energy in the hydrogen-electricity coupling system, simulate and calculate the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system, and determine whether the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If not, continue to reduce the output of new energy in the hydrogen-electricity coupling system until the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range, output the active power configuration of the hydrogen-electricity coupling system, and output a configuration plan based on the active power configuration.

5. A system for configuring active devices of a hydrogen-electricity coupling system, characterized in that: include: Initial unit for determining limiting factors for active device configuration in hydrogen-electricity coupling systems; A data selection unit, used to select specific typical operation mode data of the hydrogen-electric coupling system, and configure the installed capacity and output of the new energy generator set based on the limiting factors under the specific typical operation mode data; A simulation calculation unit is used to perform simulation calculation on the hydrogen-electric coupling system configured with the installed capacity of the new energy generator and the output of the new energy generator under the specific typical operation mode data based on the limiting factors, judge the simulation result, and output the configuration plan according to the judgment result; A configuration unit is used to configure active devices of the hydrogen-electricity coupling system according to the configuration scheme.

6. The system according to claim 5, characterized in that The limiting factors include: thermal stability limit of AC lines, short-circuit current level of busbars and risk of new energy high voltage disconnection from the grid.

7. The system according to claim 5, characterized in that The simulation results include: Simulation results of short-circuit current of busbars within the hydrogen-electricity coupling system and busbars near the hydrogen-electricity coupling system; Simulation calculation results of renewable energy transient voltage after various AC and DC faults in the vicinity of hydrogen-electric coupling system.

8. The system according to claim 5, characterized in that The simulation calculation unit performs simulation calculation on the hydrogen-electric coupling system configured with the installed capacity of the new energy generator and the output of the new energy generator based on the limiting factors under the specific typical operation mode data, judges the simulation results, and outputs the configuration plan according to the judgment results, including: Step 1: using the specific typical operation mode data, simulate and calculate the short-circuit current of the busbar in the hydrogen-electricity coupling system and the busbar in the vicinity of the hydrogen-electricity coupling system, and determine whether the short-circuit current of the busbar in the hydrogen-electricity coupling system and the busbar in the vicinity of the hydrogen-electricity coupling system exceeds the standard. If it exceeds the standard, reselect the specific typical operation mode data until the short-circuit current of the busbar in the hydrogen-electricity coupling system and the busbar in the vicinity of the hydrogen-electricity coupling system does not exceed the standard, and then enter step 2; Step 2: Determine the re-selected specific typical operation mode data as the final mode data, use the final mode data to simulate and calculate the transient voltage of the new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system, and determine whether the transient voltage of the new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If it is within a reasonable range, determine the installed capacity and output of the new energy, and configure it according to the thermal stability limit of the hydrogen-electricity coupling system and the main grid interconnection line. If it is not within a reasonable range, proceed to step 3; Step 3: After adding one phase regulator in the hydrogen-electricity coupling system, simulate and calculate to obtain the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system, and judge whether the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If not, continue to increase the number of phase regulators until the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range, and re-simulate and calculate to obtain the bus short-circuit current in the hydrogen-electricity coupling system and in the vicinity of the hydrogen-electricity coupling system, and judge whether the bus short-circuit current in the hydrogen-electricity coupling system and in the vicinity of the hydrogen-electricity coupling system exceeds the standard. If not, output the active power configuration of the hydrogen-electricity coupling system, and output the configuration plan according to the active power configuration. If it exceeds the standard, enter step 4; Step 4: in the hydrogen-electricity coupling system after adding the phase regulator in step 3, one phase regulator is reduced until the short-circuit current of the busbar in the hydrogen-electricity coupling system and the hydrogen-electricity coupling system near the area does not exceed the standard. After determining the total number of phase regulators, it is determined whether the transient voltage of the new energy after various AC and DC faults in the hydrogen-electricity coupling system near the area is within a reasonable range. If it is within a reasonable range, the active power configuration of the hydrogen-electricity coupling system is output, and according to the active power configuration, a configuration plan is output. If it is not within a reasonable range, step 5 is performed; Step 5: Reduce the output of new energy in the hydrogen-electricity coupling system, simulate and calculate the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system, and determine whether the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range. If not, continue to reduce the output of new energy in the hydrogen-electricity coupling system until the transient voltage of new energy after various AC and DC faults in the vicinity of the hydrogen-electricity coupling system is within a reasonable range, output the active power configuration of the hydrogen-electricity coupling system, and output a configuration plan based on the active power configuration.

9. A computer device, characterized in that: include: one or more processors; a processor for executing one or more programs; When the one or more programs are executed by the one or more processors, the method according to any one of claims 1 to 4 is implemented.

10. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed, the method according to any one of claims 1 to 4 is implemented.

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