A cross-regional and cross-basin multi-energy complementary flexible regulation system and method

Abstract

The present invention discloses a cross-regional and cross-basin multi-energy complementary flexible regulation system and method in the field of power system technology, including: obtaining the load characteristics of large regional power grid one and large regional power grid two; judging whether the loads of the two regional power grids have peak-shifting benefits based on the load characteristics of the large regional power grid one and large regional power grid two; judging whether there is a peak-shaving margin between the two regional power grids in response to the loads of the two regional power grids having peak-shaving benefits; determining a transmission power regulation scheme based on the load period of the large regional power grid one and large regional power grid two in response to the peak-shaving margin between the two regional power grids; and performing power regulation between the large regional power grid one and large regional power grid two based on the transmission power regulation scheme. The present invention can clarify the arrangement of cross-regional power grid regulation methods, achieve win-win development of the two regional power grids, and jointly build a new power system.

Description

Technical Field

[0001] The present invention relates to a cross-region and cross-basin multi-energy complementary flexible regulation system and method, belonging to the technical field of power systems. Background Art

[0002] The Northwest region is rich in new energy resources and is the main battlefield for my country's energy transformation. The technically exploitable wind power in the Northwest region accounts for 21.87% (80 meters) and 30% (100 meters) of the country's wind power. The theoretical solar energy reserves in the Northwest region account for 35% of the country's theoretical solar energy reserves, and the technically exploitable solar energy accounts for 59% of the country's technically exploitable solar energy. The installed capacity of new energy in the Northwest has doubled from 60,000MW to 125 million kilowatts, accounting for 40% of the installed capacity. At present, the Northwest has become the regional power grid with the fastest development and the highest proportion of new energy in China.

[0003] Considering the gradual implementation of the "dual carbon" goals, the country's requirements for the proportion of non-fossil energy electricity in the total new electricity and the proportion of new DC channel electricity, Northwest new energy will usher in a new round of large-scale development. At the same time, affected by one province and one coal enterprise in the Northwest, and the early warning of thermal power in the Northwest by the National Energy Administration, combined with various constraints, traditional thermal power sources will gradually stagnate, the grid regulation capacity is stretched, and the grid balance risk is more prominent: First, it is difficult to balance electricity during peak load periods. Northwest new energy maintains a rapid growth momentum, the scale of hydropower is close to saturation, the proportion of conventional power supply is further reduced, and the grid balance is more dependent on new energy. Due to the characteristics of "large fluctuations and strong intermittent" of new energy, even considering the regional benefits of new energy, the power that can reliably participate in the balance does not exceed 10% of the installed capacity of new energy. In the case of surplus electricity in the entire Northwest network, there is a power gap during peak load periods. Second, it is difficult to adjust the peak during the period of large new energy generation. The fluctuation of photovoltaic output on high-load days exceeds the difference between the midday and valley of the Northwest power grid load (internal use + external transmission), and the difficulty of downward adjustment during the noon period increases. Taking into account the fluctuations of new energy sources, when the power grid is switching from the afternoon to the evening peak period, under the most unfavorable conditions, the demand for peak power in a short period of time reaches 30,000-90,000MW. The operation mode is difficult to arrange, and the pressure of real-time operation regulation has doubled. The power balance in Northwest China has changed from the traditional "deterministic balance" to the new form of "probabilistic balance", and balance safety will become the main contradiction in the clean transformation of the Northwest power grid.

[0004] In order to achieve the grid connection and consumption of new energy under the background of "dual carbon", the Northwest Power Grid urgently needs to build peak-shaving power sources to ensure the future peak-shaving and peak-shaving needs of the power grid. However, combined with the actual situation in the Northwest region, there are the following problems in the construction of peak-shaving power sources: First, the construction of peak-shaving power sources is difficult. Thermal power: The regulation space of traditional conventional power sources is small. Thermal power has always been the backbone of the Northwest Power Grid to ensure power balance, power grid security, and new energy peak-shaving. However, due to the current system and mechanism, it is still unable to compensate for the power loss and investment, cost, and coal consumption caused by the deep peak-shaving of thermal power, the existing thermal power flexibility transformation is insufficient. At the same time, the external environment and its own economy have led to insufficient motivation for central enterprises to build new thermal power. Hydropower: The only large-scale hydropower with good regulation capacity in the Northwest hydropower is the three sections of the Yellow River mainstream. However, due to restrictions such as ecological protection, the interests of the two provinces, and the complexity of comprehensive utilization, the unit kilowatt investment is high, and it is difficult to meet the regulations and be put into operation on schedule. The remaining hydropower is mainly small and medium-sized hydropower, mainly distributed in Xinjiang, with high investment and poor regulation capacity. Energy storage power sources: pumped storage, electrochemical energy storage and solar thermal power stations can be adjusted in both directions and are high-quality peak-shaving power sources. However, the construction of pumped storage with relatively mature technology is restricted by natural conditions and construction cycles, and is costly and time-consuming. Electrochemical energy storage and solar thermal are restricted by current technical conditions, and the overall cost is still at a high level. Second, high regulation demand leads to increasing system operating costs. The Northwest region is rich in coal resources and is the region with the lowest electricity price in the country, with electricity prices 0.1-0.2 yuan / kWh lower than other regions. After the parity of new energy access to the grid (Qinghai currently implements an electricity price of 0.2277 yuan / kWh), the lower grid-connected electricity price and abundant new energy resources will offset each other to a certain extent, affecting the development progress of new energy. Under the background of "dual carbon", the scale of thermal power is limited. In order to meet the needs of the system's upward and downward peaking, the Northwest power system needs to build large-scale energy storage peak-shaving power sources. The contradiction between the rising cost on the energy supply side and the lower cost on the demand side is becoming increasingly prominent. The advantage of low electricity prices in the Northwest region will be reduced, affecting the internal use and external transmission of the Northwest power grid.

[0005] The current "new energy + energy storage" energy supply model is difficult to achieve safety, economy and efficiency at the same time in the short term. It is urgent to find other solutions. Under the background of "dual carbon", it is increasingly difficult for a single regional power grid to meet the grid regulation needs, which is bound to cause a large amount of wind and solar power abandonment.

[0006] The Southwest Power Grid is particularly rich in hydropower resources, with technically exploitable capacity reaching 330 million kilowatts, accounting for about 57% of the country. Among them, Tibet and Sichuan rank first and second in the country respectively. The development and transmission of hydropower in the Sichuan-Tibet region is an important support for ensuring the security of the national power supply, and is also the main cornerstone for achieving the non-fossil energy consumption target. The supply and demand of the Southwest Power Grid has always been characterized by "abundance and shortage". During the dry season, it is necessary to purchase electricity to achieve a balance between supply and demand, and there is a large seasonal surplus of electricity during the flood season. From the perspective of power balance, as the proportion of thermal power decreases, the output characteristics of hydropower power in the Southwest Power Grid will become more obvious. The dry season is greatly affected by the water in the basin, and the output is significantly reduced compared with the flood season. The electricity in the driest month is about 55% of the electricity in the richest month. In 2025, under the condition of 1 input and 7 outputs of UHV DC, the Southwest Power Grid will have a surplus of electricity and a shortage of electricity, and there will be a problem of seasonal power shortage in winter. According to the requirements of the weighted index for new energy consumption, the non-hydropower indexes of Sichuan and Chongqing in 2025 will be 11.9% and 9.9% respectively. The annual hydropower shortage in Southwest China will exceed 15 billion kWh, and the gap will increase in the long term. From the perspective of power balance, the maximum output of hydropower in Southwest China is not much different in each month, and the short-term power supply is sufficient. The current annual operation mode shows that except for winter, there is a large amount of idle hydropower capacity in the Southwest Power Grid every month. The winter late peak power balance is mainly due to the lack of hydropower, which makes it impossible for hydropower to be fully utilized. If the power gap is filled, there will also be a large surplus of power.

[0007] In summary, as the proportion of renewable energy in the Northwest Power Grid increases year by year, it brings new challenges to the power balance regulation of the power grid. Generally, energy storage power sources are used to solve this problem. However, the peak-shaving power supply in the Northwest is insufficient. The current "new energy + energy storage" energy supply model is difficult to achieve safety, economy and efficiency at the same time in the short term. It is urgent to seek other solutions. In addition, the Northwest Power Grid currently adopts a single-region power grid balance regulation mode, and there is a large amount of wind and solar abandonment. The Southwest region is rich in hydropower, and there is still a power balance problem during the winter evening peak due to insufficient hydropower. In the past, the peak-shaving of the regional power grid and the power balance problem of another region were considered separately. Summary of the invention

[0008] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a cross-regional and cross-basin multi-energy complementary flexible regulation system and method, clarify the arrangement of cross-regional power grid regulation mode, achieve win-win development of the two major regional power grids, and jointly build a new power system.

[0009] To achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0010] In a first aspect, the present invention provides a cross-regional and cross-basin multi-energy complementary flexible regulation method, comprising:

[0011] Obtaining load characteristics of the first large regional power grid and the second large regional power grid;

[0012] Based on the load characteristics of large regional power grid 1 and large regional power grid 2, determine whether the loads of the two regional power grids have peak shifting benefits;

[0013] In response to the load of the two regional power grids having the peak shifting benefit, determining whether there is a peak shifting margin between the two regional power grids;

[0014] In response to the presence of a peak load margin between the two regional power grids, a transmission power adjustment scheme is determined based on the load periods of the first large regional power grid and the second large regional power grid;

[0015] Power regulation is performed between the large regional power grid 1 and the large regional power grid 2 based on the transmission power regulation scheme.

[0016] Furthermore, based on the load characteristics of large regional power grid one and large regional power grid two, it is judged whether the loads of the two regional power grids have peak-shifting benefits, including: by comparing the load amounts during the peak load day time period of the maximum load month of the two regional power grids, it is determined whether the loads of the two regional power grids have peak-shifting benefits.

[0017] Furthermore, in response to the load of the two regional power grids having the peak-shaving benefit, it is determined whether there is a peak-shaving margin between the two regional power grids, including: by analyzing the power supply structure and regulation capability of the two regional power grids, it is determined whether there is a peak-shaving margin between the two regional power grids, the power supply structure including the installed capacity and proportion of new energy, thermal power and hydropower of the two regional power grids, the regulation capability including the peak-shaving capability of new energy, thermal power and hydropower.

[0018] Further, in response to the presence of peak load margin between the two regional power grids, a transmission power adjustment scheme is determined based on the load periods of the large regional power grid one and the large regional power grid two, including:

[0019] Determine whether the second power grid of the large regional power grid is in a period of high load;

[0020] In response to the large regional power grid No. 2 being in a period of high load, a dispatching mode of large regional power grid No. 1 sending power to large regional power grid No. 2 is adopted;

[0021] In response to the large regional power grid 2 not being in a high load period, determining whether the large regional power grid 1 is in a flood season;

[0022] In response to the large regional power grid being in the flood season, determining whether it is the most difficult time for the large regional power grid to regulate the peak of the second power grid;

[0023] In response to the most difficult moment for the peak load regulation of the large regional power grid No. 2, after adopting the dispatching method of the large regional power grid No. 2 to the large regional power grid No. 1, it is judged whether the power meets the gap of the large regional power grid No. 1; in response to the power having met the gap of the large regional power grid No. 1, the dispatching method of the large regional power grid No. 1 to the large regional power grid No. 2 is adopted for the remaining time periods; in response to the power not meeting the gap of the large regional power grid No. 1, the dispatching method of the large regional power grid No. 2 to the large regional power grid No. 1 is still adopted for the remaining time periods;

[0024] In response to the most difficult peak load moment for the large regional power grid No. 2, a dispatching method of sending power from the large regional power grid No. 1 to the large regional power grid No. 2 is adopted;

[0025] In response to the large regional power grid 1 not being in the flood season, determining whether the large regional power grid 2 has a large amount of new energy;

[0026] In response to a large-scale new energy generation in the large-regional power grid 1, after adopting the dispatching method of large-regional power grid 2 to large-regional power grid 1, it is determined whether the power meets the gap of large-regional power grid 1; in response to the power having met the gap of large-regional power grid 1, the dispatching method of large-regional power grid 1 to large-regional power grid 2 is adopted for the remaining time periods; in response to the power not meeting the gap of large-regional power grid 1, the dispatching method of large-regional power grid 2 to large-regional power grid 1 is still adopted for the remaining time periods;

[0027] In response to the non-large-scale generation of new energy in a large regional power grid, the power transmission mode is flexibly adjusted according to the power generation situation of new energy.

[0028] Furthermore, the transmission power regulation scheme can achieve regulation targets, including meeting the winter evening peak power demand of a large regional power grid, meeting the peak-shaving demand of new energy sources in a large regional power grid, meeting the dry season power demand of a large regional power grid, or meeting the power quota system demand of new energy sources in a large regional power grid.

[0029] Furthermore, the transmission power adjustment scheme satisfies an adjustment principle, and the adjustment principle includes:

[0030] In response to the peak load of large regional power grid 2 in the evening of the month, large regional power grid 1 supplies power to large regional power grid 2;

[0031] In response to the peak period of small load in the evening of the large regional power grid 2, the large regional power grid 1 supplies power to the large regional power grid 2;

[0032] In response to the peak period of renewable energy generation at noon, power is sent from regional power grid 2 to regional power grid 1;

[0033] In response to the flood season of large regional power grid 1 and the late night period, large regional power grid 1 transmits power to large regional power grid 2;

[0034] In response to the two largest load monthly evening peaks of non-large regional power grids, the two smallest load monthly evening peaks of large regional power grids, the peak renewable energy generation period at noon, and any period during the flood season and the late night of large regional power grids, the power transmission mode is flexibly adjusted according to the renewable energy power generation situation.

[0035] Furthermore, power regulation is performed between the large regional power grid one and the large regional power grid two based on the transmission power regulation scheme, including: transmitting power regulated based on the transmission power regulation scheme between the large regional power grid one and the large regional power grid two through a flexible direct current transmission line.

[0036] In a second aspect, the present invention provides a cross-regional and cross-basin multi-energy complementary flexible regulation system, comprising:

[0037] Load characteristic acquisition module: used to obtain the load characteristics of the large regional power grid 1 and the large regional power grid 2;

[0038] Peak shifting benefit judgment module: used to judge whether the loads of the two regional power grids have peak shifting benefits based on the load characteristics of the large regional power grid 1 and the large regional power grid 2;

[0039] Peak load margin judgment module: used to judge whether there is a peak load margin between the two regional power grids in response to the load of the two regional power grids having the peak load shifting benefit;

[0040] A transmission power adjustment scheme determination module: used to determine a transmission power adjustment scheme based on the load periods of the large regional power grid one and the large regional power grid two in response to the presence of a peak regulation margin between the two regional power grids;

[0041] Power regulation module: used for performing power regulation between the large regional power grid 1 and the large regional power grid 2 based on the transmission power regulation scheme.

[0042] In a third aspect, the present invention provides a cross-regional and cross-basin multi-energy complementary flexible regulation device, including a processor and a storage medium;

[0043] The storage medium is used to store instructions;

[0044] The processor is used to operate according to the instructions to execute the steps of any of the methods described above.

[0045] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of any of the above methods when executed by a processor.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] 1. Under the circumstance that the current "new energy + energy storage" energy supply mode is difficult to achieve safety, economy and efficiency at the same time in the short term, the present invention solves the peak-shaving problem caused by the increase in the proportion of new energy; adopts the method of cross-regional power grid coordinated regulation to reduce the phenomenon of wind and solar power abandonment and improve resource utilization; at the same time, it solves the grid dispatching and regulation problems of the two regions. The power grid in one region solves the peak-shaving difficulties, and the power grid in the other region solves the seasonal power shortage problem, thereby improving the safety and stability of the system; the cross-regional power grid realizes resource sharing through regional interconnection. Compared with single-region operation, it can reduce the power grid operation cost, effectively improve the power grid operation reliability, and alleviate the peak-shaving pressure at a relatively small economic cost.

[0048] 2. The present invention uses the complementary characteristics of the load and power structure of the two regional power grids, the characteristics of flexible direct current without power outage reversal, and reverses the direct current power transmission direction twice within a day, so as to realize the sharing of regulation resources and mutual assistance of electricity between the two regional power grids at a relatively low cost. The large regional power grid one is rich in hydropower and has seasonal power shortage problems. The large regional power grid two has a large proportion of new energy and a large peak-shaving demand. The idle capacity of hydropower in the large regional power grid one is used for peak-shaving of the large regional power grid two, reducing the construction scale of the regulatory resources of the large regional power grid two and promoting the development of new energy; the abundant new energy electricity of the large regional power grid two is used to solve the seasonal power shortage problem of the large regional power grid one, and to complete the non-hydro renewable energy indicators. Finally, the solution of "exchanging electricity for electricity" is realized by exchanging the abundant new energy electricity of the large regional power grid two for the idle electricity of hydropower in the large regional power grid one. The cross-regional power grid regulation mode arrangement is clarified, and it is verified from multiple indicators such as economy and new energy consumption, which can achieve the win-win development of the two regional power grids and jointly build a new power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 This is a flexible regulation flow chart suitable for cross-regional and cross-basin multi-energy complementarity provided in the first embodiment of the present invention;

[0050] Figure 2 It is a northwest-southwest conventional DC connection diagram provided in the first embodiment of the present invention;

[0051] Figure 3 This is a schematic diagram of the power supply structure of the Northwest-Southwest power grid in 2025 provided in the first embodiment of the present invention;

[0052] Figure 4 It is a hydropower classification diagram of the Southwest Power Grid provided in the first embodiment of the present invention;

[0053] Figure 5 This is a diagram of hydropower regulation characteristics in the southwest during a normal water year provided by the first embodiment of the present invention;

[0054] Figure 6 This is a northwest-to-southwest power curve diagram provided in the first embodiment of the present invention. DETAILED DESCRIPTION

[0055] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0056] Embodiment 1:

[0057] In order to solve the problems of high-proportion renewable energy power balance and high-proportion hydropower seasonal power shortage, this embodiment proposes a flexible regulation method suitable for cross-regional and cross-basin multi-energy complementarity, which gives full play to the power regulation advantages of each region. The large regional power grid one is rich in hydropower and has seasonal power shortage problems. The large regional power grid two is rich in renewable energy and has a large peak-shaving demand. A flexible DC transmission line with reversible transmission power is added to the connecting line of the two regional power grids. The size and direction of the transmission power between the two regional power grids are adjusted through the line, releasing the hydropower capacity benefit of the large regional power grid one, meeting the peak-shaving demand of the large regional power grid two, and filling the power gap of the large regional power grid one with the large regional power grid two with surplus electricity, that is, a flexible regulation method of "trading electricity with electricity".

[0058] A cross-regional and cross-basin multi-energy complementary flexible regulation method, characterized in that the interconnection line of the two regional power grids includes a flexible direct current transmission line, comprising the following steps:

[0059] S1: By analyzing the annual and daily characteristics of the loads of the large regional power grid 1 and the large regional power grid 2, determine whether the loads of the two regional power grids have the benefit of peak shifting;

[0060] S2: If the loads of the two regional power grids have the benefit of peak shifting, by analyzing the power supply structure and regulation capacity of the two regional power grids, it is determined whether there is a peak shift margin between the two regional power grids;

[0061] S3: If there is a peak-shaving margin between the two regional power grids, according to the flood season months and daily load characteristics of the large regional power grid one, as well as the new energy output or high-load time period or the most difficult time for peak-shaving of the large regional power grid two, with the goal of meeting the winter evening peak power demand of the large regional power grid one and meeting the new energy peak-shaving demand of the large regional power grid two, determine the transmission power adjustment plan of the large regional power grid one and the large regional power grid two, and transmit the adjusted power through the flexible DC transmission line.

[0062] In S1, by comparing the load amounts of the peak load days in the maximum load months of the two regional power grids, it is determined whether the loads of the two regional power grids have the benefit of peak shifting.

[0063] In S2, by analyzing the installed capacity and proportion of renewable energy, thermal power and hydropower in the two regional power grids, combined with the peak-shaving capacity of renewable energy, thermal power and hydropower sources, it is determined whether there is peak-shaving margin between the two regional power grids.

[0064] The regulation targets in S3 also include meeting the power demand of the large regional power grid during the dry season and meeting the power quota system demand of the large regional power grid. In addition, the transmission power of the large regional power grid 1 and the large regional power grid 2 is determined according to the following principles:

[0065] Principle 1: During the peak period of the month with the largest load of large regional grid 2, large regional grid 1 supplies power to large regional grid 2;

[0066] Principle 2: During the peak period of the month when the large regional grid 2 has low load, the large regional grid 1 supplies power to the large regional grid 2;

[0067] Principle 3: During the peak period of renewable energy generation at noon, regional power grid 2 will deliver power to regional power grid 1;

[0068] Principle 4: During the flood season of large regional power grid 1, large regional power grid 1 will supply power to large regional power grid 2 during the late night period;

[0069] Principle 5: During other periods, the power transmission method should be flexibly adjusted according to the power generation situation of renewable energy.

[0070] S3 specifically includes the following steps:

[0071] S31: Determine whether the large regional power grid 2 is in a period of high load. If the large regional power grid 2 is in a period of high load, adopt the dispatching method of large regional power grid 1 to large regional power grid 2; if the large regional power grid 2 is not in a period of high load, determine whether the large regional power grid 1 is in a flood season; if the large regional power grid 1 is in a flood season, go to S32; if the large regional power grid 1 is not in a flood season, go to S34;

[0072] S32: Determine whether it is the most difficult time for the large regional power grid 2 to adjust the peak; if it is the most difficult time for the large regional power grid 2 to adjust the peak, adopt the dispatching method of large regional power grid 2 to large regional power grid 1, and go to S33; if it is not the most difficult time for the large regional power grid 2 to adjust the peak, adopt the dispatching method of large regional power grid 1 to adjust the peak of large regional power grid 2;

[0073] S33: Determine whether the power supply meets the gap of the large regional power grid 1; if the gap of the large regional power grid 1 is met, the dispatching method of large regional power grid 1 to large regional power grid 2 is adopted for the remaining time periods; if the gap of the large regional power grid 1 is not met, the dispatching method of large regional power grid 2 to large regional power grid 1 is still adopted for the remaining time periods;

[0074] S34: Determine whether the new energy of the large regional power grid No. 2 is in large production; if the new energy of the large regional power grid No. 1 is in large production, adopt the dispatching method of large regional power grid No. 2 to large regional power grid No. 1, and go to S33; if the new energy of the large regional power grid No. 2 is not in large production, flexibly adjust the power transmission method according to the new energy power generation situation.

[0075] This embodiment takes the Southwest-Northwest power grid as an example to introduce the cross-regional and cross-basin multi-energy complementary flexible regulation method. As the proportion of new energy in the Northwest power grid increases year by year, it brings new challenges to the peak regulation of the power grid. Generally, energy storage power sources are used to solve the peak regulation problem. However, the peak regulation power source in the Northwest region is insufficient. The current "new energy + energy storage" energy supply mode is difficult to achieve safety, economy and efficiency at the same time in the short term. It is urgent to seek other solutions. In addition, the Northwest power grid currently adopts a single-region power grid peak regulation mode, and there are a large number of wind and light abandonment phenomena. Peak regulation is difficult during the period of large-scale new energy generation. The fluctuation of photovoltaic output on high-load days exceeds the difference between the midday and valley loads of the Northwest power grid (including the Northwest power grid's own load and external transmission power), and the difficulty of lowering during the noon period increases. After comprehensively considering the fluctuations of new energy, during the transition of the power grid operation from the afternoon period to the evening peak period, under the most unfavorable conditions, the demand for peak power in a short period of time reaches 3000-90000MW. The operation mode is difficult to arrange, and the pressure of real-time operation regulation is doubled. The main problem of the Northwest power grid is the power balance problem during the period of large-scale new energy generation.

[0076] The Southwest Power Grid is particularly rich in hydropower resources, with technically exploitable amounts reaching 330 million kilowatts, accounting for about 57% of the country. The supply and demand of the Southwest Power Grid has always been characterized by "abundance and shortage". During the dry season, it is necessary to purchase electricity from outside to achieve supply and demand balance, and there is a large seasonal surplus of electricity during the flood season. From the perspective of power balance, as the proportion of thermal power decreases, the hydropower output characteristics of the Southwest Power Grid will become more obvious. The dry season is greatly affected by the water in the basin, and the output is significantly reduced compared with the flood season. The power in the driest month is about 55% of the power in the richest month, and there is a problem of seasonal power shortage in winter. According to the requirements of the weight index of new energy consumption, the non-water indicators of Sichuan and Chongqing in 2025 will be 11.9% and 9.9% respectively. The annual hydropower shortage in Southwest China will be more than 15 billion kilowatt-hours, and the gap will increase in the long term. From the perspective of power balance, the annual operation mode of the Southwest Power Grid shows that, except in winter, there is a large idle capacity of hydropower in each month of the Southwest Power Grid. The winter late peak power balance is mainly due to the lack of hydropower power, which makes it impossible to fully utilize hydropower power. If the power gap is filled, there will also be a large surplus of power.

[0077] See also Figure 2 At present, the Northwest Power Grid and the Southwest Power Grid are connected through two conventional DC lines: ±500kV Debao DC (Baoji, Shaanxi-Deyang, Sichuan) with a transmission power of 3000MW and ±400kV Chaila DC (Qaidam, Qinghai-Lhasa, Tibet) with a transmission power of 600MW. A new UHV DC line, ±800kV Hami North DC (Hami, Xinjiang-Chongqing) with a transmission power of 8000MW, has been added. All of them are conventional DC lines, with a relatively fixed transmission mode, and cannot be frequently reversed within a day.

[0078] The specific implementation steps of this embodiment are as follows:

[0079] Step 1: Analyze whether the load has the benefit of peak shifting. As shown in Table 1, it is estimated that the annual maximum load utilization hours of the Northwest Power Grid will be 7090 hours in 2025, and the annual maximum load utilization hours of the Southwest Power Grid will be 5119 hours. From the annual characteristics, the Northwest Power Grid has the smallest fluctuation, and the Southwest Power Grid has the largest fluctuation. Under the same load level and equivalent power supply structure, the Northwest Power Grid has a better ability to accept new energy than the Southwest Power Grid.

[0080] Unit: 0MW, billion kWh, hour

[0081] area Total electricity consumption Maximum load Maximum load utilization hours Northwest Power Grid 11198 15793 7090 Southwest Power Grid 5314 10380 5119

[0082] Table 1 Maximum load utilization hours of power grids in various regions in 2025

[0083] Considering the seasonal scale and daily load, as shown in Table 2, the maximum load of the Northwest Power Grid occurs in December, and the maximum load of the Southwest Power Grid occurs in August. When the Northwest Power Grid reaches the peak load of the year, the load of the Southwest Power Grid is only 0.84 of the maximum load. Considering only from the perspective of load characteristics, the peak load regulation potential of the Southwest Power Grid and the Northwest Power Grid is the greatest, and there is a peak shifting benefit.

[0084] Unit: per unit value based on annual maximum load

[0085] Table 2 Annual load characteristics of Northwest-Southwest power grid

[0086] Step 2: Analyze whether the power structure has peak load margin. Figure 3 , the power structure of the Northwest Power Grid is mainly thermal power and new energy, while the power structure of the Southwest Power Grid is mainly hydropower. It is estimated that in 2025, the Northwest's new energy will exceed 200 million and the Southwest's hydropower will be 120 million. The Northwest's new energy accounts for a high proportion and has a large peak-shaving demand. The Southwest Power Grid has a small proportion of new energy and a high proportion of hydropower, so the peak-shaving demand is relatively small and has strong regulation capabilities.

[0087] See also Figure 4 , the proportion of hydropower with regulation performance in the Southwest Power Grid reached 78%, of which annually regulated hydropower accounted for 24%. The hydropower regulation capacity is relatively strong. Figure 5 The regulation characteristics of hydropower in Southwest China in a normal water year are obtained by integrating the hydrological characteristics of each hydropower station, without considering the regulation characteristics of runoff power stations, and their average output is used in the calculation. Figure 5As shown in the figure, the expected output of hydropower in the southwest is above 0.79, while the average output is between 0.33-0.65. Due to the limited hydropower, the southwest power grid has more than 10 million kilowatts of idle hydropower capacity in each month except the flood season. Under the premise of meeting the hydropower demand, the hydropower capacity benefit can be maximized by optimizing the hydropower operation mode. Therefore, the power grid has a peak-shaving margin. That is, by analyzing the installed capacity and proportion of new energy, thermal power, and hydropower in the two regional power grids, combined with the peak-shaving capacity of new energy, thermal power, and hydropower sources, it is judged whether there is a peak-shaving margin between the two regional power grids.

[0088] Step 3: Determine the adjustment method. Determine whether the Northwest Power Grid supplies power to the Southwest Power Grid or the Southwest Power Grid supplies power to the Northwest Power Grid based on the following five principles.

[0089] Principle 1: Power is sent from the southwest to the northwest during the evening peak period of the northwest's heavy load months, which can give full play to the capacity effect of southwest hydropower and utilize the idle capacity of southwest hydropower to alleviate the problem of insufficient peak-shaving capacity of the northwest power grid during heavy load periods.

[0090] Principle 2: Power is sent from Southwest to Northwest during the peak period of the month with small load in Northwest China, which can reduce the startup of conventional power sources in the Northwest power grid, improve the peak-shaving capacity of the power grid, and promote the consumption of new energy.

[0091] Principle three: During the peak period of new energy generation at noon, electricity is sent from the northwest to the southwest, giving full play to the regulation capacity of hydropower in the southwest, solving the problem of insufficient peak-shaving capacity of the northwest power grid, and filling the electricity gap in the southwest.

[0092] Principle 4: During the flood season in southwest China, water is sent from southwest to northwest in the late night period, which increases the duration of water transport from southwest to northwest during the day and promotes hydropower consumption.

[0093] Principle 5: During other periods, the power transmission method should be flexibly adjusted according to the power generation situation of renewable energy.

[0094] On the basis of the above principles, and according to the current time period, load characteristics, and the status of the Northwest Power Grid and Southwest Power Grid, the regulation target for the current time period is determined from the following regulation targets. The regulation targets are as follows:

[0095] (1) Meeting the peak load regulation demand of new energy in the Northwest Power Grid;

[0096] (2) Meeting the winter evening peak power demand of the Southwest Power Grid;

[0097] (3) Meeting the power demand of the Southwest Power Grid during the dry season;

[0098] (4) Meet the requirements of the new energy power quota system of the Southwest Power Grid;

[0099] The regulation targets can be combined, such as (1)(2), (1)(2)(3), (1)(2)(3)(4), etc., and are not limited to (1)(2)(3)(4). According to the regulation target of each time period, the transmission power regulation plan of the Southwest Power Grid and the Northwest Power Grid in each time period is determined, and the various time periods are integrated together to finally form the transmission power regulation plan of the Southwest Power Grid and the Northwest Power Grid in the complete time period. The ±660 kV / 4 million kW flexible direct current transmission technology is adopted, which is flipped twice within a day to transmit the regulated power.

[0100] Based on the above five principles, the following strategies can be adopted:

[0101] Determine whether the Northwest Power Grid is in a period of heavy load. If so, use the dispatching method of the Southwest Power Grid to send power to the Northwest Power Grid.

[0102] If the Northwest Power Grid is not in a period of high load, determine whether the Southwest Power Grid is in the flood season; if the Southwest Power Grid is in the flood season, determine whether it is the most difficult time for the Northwest Power Grid to adjust its peak load; if it is the most difficult time for the Northwest Power Grid to adjust its peak load, adopt the dispatching method of sending the Northwest Power Grid to the Southwest Power Grid; if it is not the most difficult time for the Northwest Power Grid to adjust its peak load, adopt the dispatching method of sending the Southwest Power Grid to the Northwest Power Grid;

[0103] If the Southwest Power Grid is not in flood season, determine whether the Northwest Power Grid has a large amount of renewable energy. If the Northwest Power Grid has a large amount of renewable energy, use the dispatching method of the Northwest Power Grid to send power to the Southwest Power Grid;

[0104] When the method is to send electricity from Northwest to Southwest, determine whether the electricity quantity can meet the gap of Southwest power grid; if the gap of Southwest power grid has been met, the dispatching method of sending electricity from Southwest power grid to Northwest power grid will be adopted for the rest of the time period; if the gap of Southwest power grid has not been met, the dispatching method of sending electricity from Northwest power grid to Southwest power grid will still be adopted for the rest of the time period.

[0105] Based on the above strategy, the expected regulation target at the current moment is obtained. The current regulation target is determined according to the current month, time period and load characteristics. The following power transmission plan is formulated, using ±660 kV / 4000MW flexible DC transmission technology, flipping twice within a day, and proposing a regulation curve as follows: Figure 6 As shown in the figure, combined with the load peak shifting benefits of the Northwest and Southwest power grids, the flexible direct current transmission technology is adopted, and the characteristics of flexible direct current without power outage and flipping are utilized to achieve the purpose of "exchanging electricity for electricity". The specific power transmission scheme is:

[0106] (1) Low-load months during the flood season

[0107] During the period from 23:00 to 08:00, 2000MW of power will be sent from the southwest to the northwest (during the flood season in the southwest, power will be sent from the southwest to the northwest at night to promote hydropower consumption)

[0108] 09:00-17:00: 4000MW of power will be sent from Northwest to Southwest

[0109] During the period from 18:00 to 22:00, 4,000MW of power will be sent from the southwest to the northwest (during the evening peak in the northwest, the southwest will help with peak load regulation)

[0110] (2) Non-flood season high load months

[0111] During the time periods of 23:00-24:00 and 00:00-17:00, 4,000MW of power will be sent from the northwest to the southwest (at other times, the northwest will provide power to the southwest)

[0112] During the period from 18:00 to 22:00, 4,000MW of power is sent from the southwest to the northwest (during the evening peak, the southwest provides peak load regulation to the northwest)

[0113] (3) Non-flood season low-load months

[0114] 2000MW of power will be sent from Northwest to Southwest during the period of 00:00 to 09:00

[0115] 10:00-16:00: 4,000MW of power will be sent from Northwest to Southwest

[0116] From 17:00 to 22:00, 4,000MW of power will be sent from the southwest to the northwest

[0117] (4) Months with high load during the flood season

[0118] 4,000MW of power will be sent from the southwest to the northwest during the period of 00:00 to 08:00

[0119] 09:00-16:00: 4000MW of power will be sent from Northwest to Southwest

[0120] During the period from 17:00 to 24:00, 4000MW of power will be sent from the southwest to the northwest.

[0121] This specification will also verify the technical solution of the present invention from the following aspects and introduce the advantages of the technical solution:

[0122] The starting point of the flexible direct current is selected based on the feasibility of the project and the minimum cost of the project. The starting point of the planned grid on the northwest side is set as the 750 kV Hanzhong substation, which is the closest 750 kV point of the northwest power grid to the southwest power grid, and avoids crossing the Qinling Mountains. On the southwest side, considering the collection and power evacuation of hydropower in the southwest, combined with the southwest UHV AC planning, the flexible direct current station is planned to be selected in the east or north of Chengdu, and the DC line project is expected to be about 450 kilometers.

[0123] Project adaptability: During the flood season in the southwest, the peak load period of each day will reduce the peak load capacity of the northwest power grid by 2.4 million. This can be resolved by raising the power of other low-level DC transmission in the northwest, and promoting the consumption of hydropower in the "Three Hua" power grid. There is a certain contradiction between the evening peak period and the DC transmission direction of Hami North. The contradiction can be alleviated by identifying the supporting thermal power of Hami North as the power source of the southwest power grid and reducing the evening peak DC transmission curve of Hami North.

[0124] After the flexible direct current is put into operation, the grid structure of the northwest and southwest areas will be appropriately strengthened to meet the demand for two-way exchange between the flexible direct current and the main grid during the planning period. Both the northwest and southwest are large-scale sending-end power grids, each receiving 4,000MW of power, and there is no stability problem in the two power grids.

[0125] Project benefits: The area occupied by the flexible DC converter station is equivalent to that of the traditional DC, and the cost of the main equipment is about 1.3 times that of the traditional DC. The investment of the ±660 kV DC line is temporarily estimated at 3 million yuan / km. The grid voltage on the northwest side is 750 kV, and the grid voltage on the southwest side is temporarily considered to be 500 kV. The AC supporting facilities of the converter stations on both sides are about 150 million yuan.

[0126] Overall, as shown in Table 3, the role of flexible direct current is equivalent to that of pumped storage power stations built in the Northwest Power Grid. The investment in the 4000MW flexible direct current built in this application case is equivalent to the investment in a new 1200MW pumped storage power station in the Northwest Power Grid.

[0127]

[0128] Table 3 Cost estimation of ±660kV flexible DC main body

[0129] Flexible direct current with the same capacity is more economical, more efficient, more flexible and more effective than pumped storage power stations. The 4000MW flexible direct current built in the application case does not require additional supporting power sources. All the electricity sent out by the northwest is new energy, and all the electricity received is hydropower, which is 100% clean energy direct current. As far as the northwest power grid is concerned, the idle capacity of hydropower in the southwest is used to alleviate the problem of power shortage during peak load periods, and the daily thermal power startup is reduced by 4000MW. Compared with the new thermal power plan of the same capacity, the maximum new energy consumption space is 5600MW, and the annual consumption of new energy electricity exceeds 15 billion kWh, which is equivalent to more than 10,000MW of new energy consumption. As far as the southwest is concerned, it alleviates the problem of power shortage in the dry season, increases the way to consume hydropower in the flood season, and is conducive to the completion of the non-water-reproducible indicators of the southwest power grid.

[0130] 1200MW Pumped Storage 4000MW flexible direct current Ontology Investment About 8.2 billion yuan About 8.2 billion yuan Peak replacement of thermal power 1200MW 4000MW Increase storage space 1680MW 5600MW efficiency 0.75 >95％ How it works Draw 8 shots 6 Any split throughout the day Annual increase in new energy electricity Maximum 2.6+2.1 billion degrees Estimated to be over 110+470 million degrees Investment Entity State Grid Corporation State Grid Corporation Electricity price guidance Difficult easy

[0131] Table 4 Comparison between flexible direct current and pumped storage in the northwest

[0132] The overall benefits of flexible direct current are far higher than those of building pumped-storage power stations. It takes advantage of natural peak-shifting and mutual assistance between regions, uses flexible adjustment methods, taps the potential of regional power grids, and achieves win-win development.

[0133] Embodiment 2:

[0134] A cross-regional and cross-basin multi-energy complementary flexible regulation system can realize a cross-regional and cross-basin multi-energy complementary flexible regulation method in embodiment 1, including:

[0135] Load characteristic acquisition module: used to obtain the load characteristics of the large regional power grid 1 and the large regional power grid 2;

[0136] Peak shifting benefit judgment module: used to judge whether the loads of the two regional power grids have peak shifting benefits based on the load characteristics of the large regional power grid 1 and the large regional power grid 2;

[0137] Peak load margin judgment module: used to judge whether there is a peak load margin between the two regional power grids in response to the load of the two regional power grids having the peak load shifting benefit;

[0138] A transmission power adjustment scheme determination module: used to determine a transmission power adjustment scheme based on the load periods of the large regional power grid one and the large regional power grid two in response to the presence of a peak regulation margin between the two regional power grids;

[0139] Power regulation module: used for performing power regulation between the large regional power grid 1 and the large regional power grid 2 based on the transmission power regulation scheme.

[0140] Embodiment three:

[0141] The embodiment of the present invention further provides a cross-regional and cross-basin multi-energy complementary flexible regulation device, which can implement a cross-regional and cross-basin multi-energy complementary flexible regulation method in embodiment 1, including a processor and a storage medium;

[0142] The storage medium is used to store instructions;

[0143] The processor is used to operate according to the instructions to perform the steps of the following method:

[0144] Obtaining load characteristics of the first large regional power grid and the second large regional power grid;

[0145] Based on the load characteristics of large regional power grid 1 and large regional power grid 2, determine whether the loads of the two regional power grids have peak shifting benefits;

[0146] In response to the load of the two regional power grids having the peak shifting benefit, determining whether there is a peak shifting margin between the two regional power grids;

[0147] In response to the presence of a peak load margin between the two regional power grids, a transmission power adjustment scheme is determined based on the load periods of the first large regional power grid and the second large regional power grid;

[0148] Power regulation is performed between the large regional power grid 1 and the large regional power grid 2 based on the transmission power regulation scheme.

[0149] Embodiment 4:

[0150] The embodiment of the present invention further provides a computer-readable storage medium, which can implement a cross-regional and cross-basin multi-energy complementary flexible regulation method in embodiment 1, and a computer program is stored thereon, and when the program is executed by a processor, the steps of the following method are implemented:

[0151] Obtaining load characteristics of the first large regional power grid and the second large regional power grid;

[0152] Based on the load characteristics of large regional power grid 1 and large regional power grid 2, determine whether the loads of the two regional power grids have peak shifting benefits;

[0153] In response to the load of the two regional power grids having the peak shifting benefit, determining whether there is a peak shifting margin between the two regional power grids;

[0154] In response to the presence of a peak load margin between the two regional power grids, a transmission power adjustment scheme is determined based on the load periods of the first large regional power grid and the second large regional power grid;

[0155] Power regulation is performed between the large regional power grid 1 and the large regional power grid 2 based on the transmission power regulation scheme.

[0156] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0157] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes 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 generate 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.

[0158] 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.

[0159] 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.

[0160] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A cross-regional and cross-basin multi-energy complementary flexible regulation method, characterized in that: include: Obtaining load characteristics of the first large regional power grid and the second large regional power grid; Based on the load characteristics of large regional power grid 1 and large regional power grid 2, determine whether the loads of the two regional power grids have peak shifting benefits; In response to the load of the two regional power grids having the peak shifting benefit, determining whether there is a peak shifting margin between the two regional power grids; In response to the presence of a peak load margin between the two regional power grids, a transmission power adjustment scheme is determined based on the load periods of the first large regional power grid and the second large regional power grid; Power regulation is performed between the large regional power grid 1 and the large regional power grid 2 based on the transmission power regulation scheme; In response to the presence of peak load margin between the two regional power grids, a transmission power adjustment scheme is determined based on the load periods of the large regional power grid one and the large regional power grid two, including: Determine whether the second power grid of the large regional power grid is in a period of high load; In response to the large regional power grid No. 2 being in a period of high load, a dispatching mode of large regional power grid No. 1 sending power to large regional power grid No. 2 is adopted; In response to the large regional power grid 2 not being in a high load period, determining whether the large regional power grid 1 is in a flood season; In response to the large regional power grid being in the flood season, determining whether it is the most difficult time for the large regional power grid to regulate the peak of the second power grid; In response to the most difficult moment for the peak load regulation of the large regional power grid No. 2, after adopting the dispatching method of the large regional power grid No. 2 to the large regional power grid No. 1, it is judged whether the power meets the gap of the large regional power grid No. 1; in response to the power having met the gap of the large regional power grid No. 1, the dispatching method of the large regional power grid No. 1 to the large regional power grid No. 2 is adopted for the remaining time periods; in response to the power not meeting the gap of the large regional power grid No. 1, the dispatching method of the large regional power grid No. 2 to the large regional power grid No. 1 is still adopted for the remaining time periods; In response to the most difficult peak load moment for the large regional power grid No. 2, a dispatching method of sending power from the large regional power grid No. 1 to the large regional power grid No. 2 is adopted; In response to the large regional power grid 1 not being in the flood season, determining whether the large regional power grid 2 has a large amount of new energy; In response to a large-scale new energy generation in the large-regional power grid 1, after adopting the dispatching method of large-regional power grid 2 to large-regional power grid 1, it is determined whether the power meets the gap of large-regional power grid 1; in response to the power having met the gap of large-regional power grid 1, the dispatching method of large-regional power grid 1 to large-regional power grid 2 is adopted for the remaining time periods; in response to the power not meeting the gap of large-regional power grid 1, the dispatching method of large-regional power grid 2 to large-regional power grid 1 is still adopted for the remaining time periods; In response to the non-large-scale generation of new energy in a large regional power grid, the power transmission mode is flexibly adjusted according to the power generation situation of new energy.

2. The cross-regional and cross-basin multi-energy complementary flexible regulation method according to claim 1 is characterized in that: Based on the load characteristics of large regional power grid one and large regional power grid two, determine whether the loads of the two regional power grids have peak shifting benefits, including: by comparing the load amounts during the peak load day time period of the maximum load month of the two regional power grids, determine whether the loads of the two regional power grids have peak shifting benefits.

3. The cross-regional and cross-basin multi-energy complementary flexible regulation method according to claim 1 is characterized in that: In response to the load of the two regional power grids having the peak-shifting benefit, it is determined whether there is a peak-shaving margin between the two regional power grids, including: by analyzing the power supply structure and regulation capability of the two regional power grids, it is determined whether there is a peak-shaving margin between the two regional power grids, the power supply structure including the installed capacity and proportion of new energy, thermal power, and hydropower of the two regional power grids, and the regulation capability including the peak-shaving capability of new energy, thermal power, and hydropower.

4. The cross-regional and cross-basin multi-energy complementary flexible regulation method according to claim 1 is characterized in that: The transmission power regulation scheme can achieve regulation targets, which include meeting the winter evening peak power demand of a large regional power grid, meeting the new energy peak regulation demand of a large regional power grid, meeting the dry season power demand of a large regional power grid, or meeting the new energy power quota system demand of a large regional power grid.

5. The cross-regional and cross-basin multi-energy complementary flexible regulation method according to claim 1 is characterized in that: The transmission power adjustment scheme satisfies the adjustment principle, and the adjustment principle includes: In response to the peak load of large regional power grid 2 in the evening of the month, large regional power grid 1 supplies power to large regional power grid 2; In response to the peak period of small load in the evening of the large regional power grid 2, the large regional power grid 1 supplies power to the large regional power grid 2; In response to the peak period of renewable energy generation at noon, power is sent from regional power grid 2 to regional power grid 1; In response to the flood season of large regional power grid 1 and the late night period, large regional power grid 1 transmits power to large regional power grid 2; In response to the two largest load monthly evening peaks of non-large regional power grids, the two smallest load monthly evening peaks of large regional power grids, the peak renewable energy generation period at noon, and any period during the flood season and the late night of large regional power grids, the power transmission mode is flexibly adjusted according to the renewable energy power generation situation.

6. The cross-regional and cross-basin multi-energy complementary flexible regulation method according to claim 1 is characterized in that: Power regulation is performed between the large regional power grid one and the large regional power grid two based on the transmission power regulation scheme, including: transmitting power regulated based on the transmission power regulation scheme between the large regional power grid one and the large regional power grid two through a flexible direct current transmission line.

7. A cross-regional and cross-basin multi-energy complementary flexible regulation system, characterized in that: include: Load characteristic acquisition module: used to obtain the load characteristics of the large regional power grid 1 and the large regional power grid 2; Peak shifting benefit judgment module: used to judge whether the loads of the two regional power grids have peak shifting benefits based on the load characteristics of the large regional power grid 1 and the large regional power grid 2; Peak load margin judgment module: used to judge whether there is a peak load margin between the two regional power grids in response to the load of the two regional power grids having the peak load shifting benefit; A transmission power adjustment scheme determination module: used to determine a transmission power adjustment scheme based on the load periods of the large regional power grid one and the large regional power grid two in response to a peak regulation margin between the two large regional power grids; Power regulation module: used for performing power regulation between the large regional power grid 1 and the large regional power grid 2 based on the transmission power regulation scheme; The transmission power adjustment scheme determination module is specifically used for: Determine whether the second power grid of the large regional power grid is in a period of high load; In response to the large regional power grid No. 2 being in a period of high load, a dispatching mode of large regional power grid No. 1 sending power to large regional power grid No. 2 is adopted; In response to the large regional power grid 2 not being in a high load period, determining whether the large regional power grid 1 is in a flood season; In response to the large regional power grid being in the flood season, determining whether it is the most difficult time for the large regional power grid to regulate the peak of the second power grid; In response to the most difficult moment for the peak load regulation of the large regional power grid No. 2, after adopting the dispatching method of the large regional power grid No. 2 to the large regional power grid No. 1, it is judged whether the power meets the gap of the large regional power grid No. 1; in response to the power having met the gap of the large regional power grid No. 1, the dispatching method of the large regional power grid No. 1 to the large regional power grid No. 2 is adopted for the remaining time periods; in response to the power not meeting the gap of the large regional power grid No. 1, the dispatching method of the large regional power grid No. 2 to the large regional power grid No. 1 is still adopted for the remaining time periods; In response to the most difficult peak load moment for the large regional power grid No. 2, a dispatching method of sending power from the large regional power grid No. 1 to the large regional power grid No. 2 is adopted; In response to the large regional power grid 1 not being in the flood season, determining whether the large regional power grid 2 has a large amount of new energy; In response to a large-scale new energy generation in the large-regional power grid 1, after adopting the dispatching method of large-regional power grid 2 to large-regional power grid 1, it is determined whether the power meets the gap of large-regional power grid 1; in response to the power having met the gap of large-regional power grid 1, the dispatching method of large-regional power grid 1 to large-regional power grid 2 is adopted for the remaining time periods; in response to the power not meeting the gap of large-regional power grid 1, the dispatching method of large-regional power grid 2 to large-regional power grid 1 is still adopted for the remaining time periods; In response to the non-large-scale generation of new energy in a large regional power grid, the power transmission mode is flexibly adjusted according to the power generation situation of new energy.

8. A cross-regional and cross-basin multi-energy complementary flexible regulating device, characterized in that: including processor and storage medium; The storage medium is used to store instructions; The processor is used to operate according to the instructions to execute the steps of the method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method described in any one of claims 1 to 6 are implemented.

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