Intelligent wind power and energy storage integrated adjusting system

Abstract

The invention relates to the technical field of wind power energy storage regulation, in particular to an intelligent wind power energy storage integrated regulation system, which comprises a monitoring module used for monitoring the magnitude of current # imgabs0 # of a power grid and outputting the magnitude of current # imgabs1 # of the power grid; the judgment module is used for receiving the magnitude of current # imgabs2 of the power grid output by the monitoring module and comparing the magnitude of current # imgabs3 of the power grid with a magnitude of current # imgabs4; the adjusting module is used for adjusting an electric energy output line of the wind power generation module based on a comparison result of the judging module, and when # imgabs5 is smaller than # imgabs6, it is proved that the electric energy demand of the power grid is in a low load condition at the moment, original power generation equipment of the power grid is sufficient to support the electric energy demand of the market, and the power generation equipment of the power grid is sufficient to support the electric energy demand of the market. And when the # imgabs7 is larger than the # imgabs8, it is proved that the electric energy demand of the power grid is in a high load condition at the moment, and at the moment, the daily stored electric energy converted from wind power generation is input to the power grid.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power energy storage regulation, and in particular to an intelligent wind power energy storage integrated regulation system. Background Art

[0002] Wind power and energy storage integration is a technology that combines wind power generation and energy storage technology. Wind power is the process of converting wind energy into electrical energy through wind turbines; energy storage technology refers to the technology of temporarily storing electrical energy so that it can be released when needed. The regulation system is used to control the destination of the electric energy in the wind power storage. There are two destinations for the electric energy: one is to connect directly to the power grid, and the other is to temporarily store the electric energy so that it can be released when needed. The traditional wind power regulation system has relatively simple functions. It is unable to adjust the storage and transfer of electric energy according to the needs of the power grid and the power generation of wind power equipment. It is also difficult to transmit electric energy to the power grid at a constant power. As a result, the power grid needs to perform additional regulation when receiving wind power, which increases the regulatory burden of the power grid. Summary of the invention

[0003] To this end, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the regulation system function is relatively simple and cannot adjust the storage and transfer of electric energy according to the needs of the power grid and the power generation of the wind power equipment. It is also difficult to achieve the effect of transmitting electric energy to the power grid at a constant power, resulting in the power grid needing additional regulation when receiving wind power, which increases the regulation burden of the power grid.

[0004] In order to solve the above technical problems, the present invention provides an intelligent wind power energy storage integrated regulation system, comprising: Monitoring module: The monitoring module is used to monitor the current of the power grid , and output the current of the power grid ; If the demand for electricity increases, the current in the grid will increase accordingly; according to the calculation formula for electricity (where U is voltage, I is current, t is time, and e is electrical energy). When the voltage is relatively stable, the current is proportional to the electrical energy demand. Judgment module: The judgment module receives the current of the power grid output by the monitoring module , and compare the current of the power grid With current threshold ; Adjustment module: the adjustment module adjusts the power output line of the wind power generation module based on the comparison result of the judgment module; Among them, when Less than or equal to When the wind power generation module is powered, the electric energy is delivered to the grid at a constant power B, and the remaining electric energy is delivered to the energy storage module for storage; when Greater than When the power of the energy storage module and the power of the wind power generation module are simultaneously transmitted to the power grid; In the above embodiment, the wind power generation module is used to convert wind energy into electrical energy and regulate the voltage of the electrical energy. The power grid usually operates at a higher voltage level. After the voltage output by the wind turbine is boosted, it can better match the power grid system and meet the grid connection requirements. Specifically, the wind power generation module can be selected from the existing wind power generation equipment. The energy storage module is used to store the electrical energy converted by the wind power generation module, and can be a chemical storage battery. Wind power energy storage integration is a technology that combines wind power generation and energy storage technology. Wind power is the process of converting wind energy into electrical energy through wind turbines; energy storage technology refers to the technology of temporarily storing electrical energy so that it can be released when needed; the regulation system is to regulate the destination of electrical energy in wind power energy storage. There are two destinations for electrical energy: one is to connect directly to the power grid, and the other is to temporarily store electrical energy so that it can be released when needed. Current threshold The setting can be set to 70% of the regional historical power grid peak load; because the annual threshold All are adjusted based on data from previous years, because the high-load power situation of the power grid is not fixed, but is dynamically adjusted based on the real-time power supply and demand situation, power grid operating conditions, and external environmental factors. The advantage of this is that it reduces the long-term non-update of data. As infrastructure construction increases year by year, the maximum load that the power grid can withstand is also increasing year by year; In the embodiment of the present invention, when Less than When the load is low, it means that the power demand of the power grid is low and the original power generation equipment of the power grid is sufficient to support the market power demand. At this time, only part of the power needs to be transmitted to the power grid at a constant power, and the remaining power needs to be transmitted to the energy storage module for storage. when Greater than It proves that the power demand of the power grid is under high load. At this time, the electric energy converted from daily stored wind power is input into the power grid, which not only relieves the pressure on the power grid, but also reduces the combustion of thermal power generation. Since wind power generation is a clean energy, it has lower cost and less pollution to the environment than thermal power generation. The above treatment method not only relieves the load on the power grid, but also reduces the pollution to the environment.

[0005] Since the power generation power of the wind power generation module is affected by factors such as the environment and is difficult to maintain constant, the power output of the wind power generation module is a variable value; if the environmental wind force is strong, the power generation power of the wind power generation module is large, and when the environmental wind force is weak, the power generation power of the wind power generation module is small; therefore, it is difficult to transmit relatively stable electric energy to the power grid, resulting in the complexity of the power grid allocation process. Based on this, the above embodiment controls the electric energy of the wind power generation module to be transmitted to the power grid at a constant power B, which is convenient for power grid allocation.

[0006] In one embodiment of the present invention, the monitoring module can also be used to monitor the electric power N at the output end of the wind power generation module, and output the electric power N value at the output end of the wind power generation module to the judgment module; The judgment module is also used to compare the numerical values ​​of the electric power N at the output end of the wind power generation module and the constant power B; specifically: When the electric energy power N at the output end of the wind power generation module is greater than the constant power B, the regulating module transmits the excess electric energy generated by the wind power generation module to the energy storage module for energy storage; When the electric energy power N at the output end of the wind power generation module is equal to the constant power B, the regulating module transmits the electric energy generated by the wind power generation module to the power grid; When the electric energy power N at the output end of the wind power generation module is less than the constant power B, the energy storage module and the wind power generation module simultaneously transmit electric energy to the power grid to keep the transmission power constant.

[0007] In the above embodiment, the electric power N at the output end of the wind power generation module is the electric power actually output when the wind power generation module performs power generation operation; When the electric energy N at the output end of the wind power generation module is greater than the constant power B, it means that the power generation power of the wind power generation module is large. At this time, the remaining electric energy can be sent to the energy storage module for energy storage; When the electric energy power N at the output end of the wind power generation module is equal to the constant power B, it means that the power generation power of the wind power generation module can basically maintain the transmission of electric energy to the power grid, and the energy storage module does not participate in the energy storage operation at this time; When the electric energy power N at the output end of the wind power generation module is less than the constant power B, the power generation power of the wind power generation module is small and less than the demand of the power grid; In the above embodiment, when the electric energy power N at the output end of the wind power generation module is greater than the constant power B or when the electric energy power N at the output end of the wind power generation module is equal to the constant power B, the output electric energy power of the wind power generation module can meet the output of the constant power B to the power grid. At this time, the regulating component directly retrieves the required electric energy power B from N and transmits it to the power grid; when the electric energy power N at the output end of the wind power generation module is less than the constant power B, in order to maintain a constant electric energy power B to the power grid, part of the electric energy is retrieved from the energy storage module, the retrieved electric energy is combined with N, and the combined electric energy power value is equal to B before it is transmitted to the power grid; through the above processing method, the stable transmission of electric energy to the power grid can be guaranteed, reducing the difficulty of regulating the power grid.

[0008] In one embodiment of the present invention, the calculation method of the constant power B output by the wind power generation module to the power grid is: The average power generation power M of the wind power generation module per unit time is obtained; first, the instantaneous power generation power of the wind power generation module is obtained; the acquisition method is to measure the instantaneous voltage and instantaneous current of the wind power generation module through a traditional measurement setting, and then measure the instantaneous phase difference between the voltage and the current, and multiply the three to obtain the instantaneous power, and the obtained value is the data of the previous year; the unit time can be one year, and all the instantaneous powers in one year are accumulated, and then divided by the time interval, which can be one day, to obtain the average power of the wind power generation module in one year; According to the formula:

[0009] Where K is the loss coefficient; the loss coefficient is determined by the use time, mechanical loss and electrical loss of the wind power module, and K is less than or equal to 1; C is the influence coefficient of the energy storage module; according to the storage capacity of the energy storage module, the value of the constant power B is adjusted. If the energy storage module is fully charged and the electric power N at the output end of the wind power generation module is greater than B, there will be a problem that the excess power has nowhere to go. Therefore, it is necessary to adjust the value of B appropriately according to the storage capacity of the energy storage module to reduce the occurrence of such situations.

[0010] The value of the constant power B in the above embodiment is linked to the average power generation of the wind power generation equipment in the previous year. This ensures that, during the year, the constant power B continuously transmitted by the wind power equipment multiplied by the total time is roughly equivalent to the total power generation of the previous year, thereby reducing the problem of excessive power output leading to insufficient power generation, or too little power output leading to excessive energy storage in the energy storage module.

[0011] The above formula is based on the annual average power generation M of the wind power generation module in the previous year. This data is the actual recorded data at the end of the previous year. Based on the average power of the previous year, the foundation of constant power B can be laid. The selection of constant power B based on the average value of the previous year is based on the premise that if the regional wind power fluctuation is maintained within a certain range, the power generation of the wind power generation module can stably meet the needs of the power grid; and the loss coefficient K is determined according to the use time of the equipment and the electrical loss, because as the use time increases, there will be deviations in various data between this year's equipment and last year's equipment. The calculated data can offset the data errors caused by mechanical loss and other reasons. On this basis, the influence coefficient C of the energy storage module is further introduced. If the energy storage module is fully charged and the electric power N at the output end of the wind power generation module is greater than B, there will be a problem that the excess power has nowhere to go. Therefore, it is necessary to adjust the value of B appropriately according to the storage capacity of the energy storage module to reduce the occurrence of such situations. This can better fit the actual situation of each year, and thus more accurately formulate the constant power B. The B obtained by multiplying the three can ensure that the calculated B is more in line with the actual situation.

[0012] In one embodiment of the present invention, the influence coefficient C of the energy storage module is determined according to the energy storage condition of the energy storage module; First, obtain the percentage value x of the energy storage in the energy storage module; Set minimum threshold and the maximum threshold ;in Less than ; When x is less than When x is greater than When x is located at and When between, C takes 1; x is less than Indicates that the energy storage module is insufficient. At this time, the influence coefficient C of the energy storage module decreases, which will reduce the constant power B; x is less than It also means that the external wind force is low, the power provided by the wind cannot meet the constant power B, and energy storage cannot be performed. Reducing the constant power B can extend the time of transmitting electricity to the grid. When x is greater than When , it indicates that the energy storage module has sufficient energy storage. At this time, the influence coefficient C of the energy storage module increases, which can increase the constant power B and prevent the energy storage module from being saturated too early. You can take 35. You can take 65, then Indicates 35% of power. It indicates that the power is 65%. When the area continues to have strong winds, the energy storage module will continue to store energy. If the constant power B is maintained, it is easy to cause the energy storage module to be quickly filled. If the strong wind continues next month, the energy storage module may fail to store energy and can only be replaced or the excess power may be transmitted to the grid in a fluctuating manner. If the area continues to be windless, the energy storage module will maintain a constant power B to output to the outside, and the power will be quickly exhausted. It cannot provide timely support when the grid is under high load. Therefore, the influence coefficient C of the energy storage module is used to change the value of the constant power B regularly, so that the storage capacity in the energy storage module can be maintained within a certain range for a long time to adapt to various conditions. The adjustment time of the constant power B can be once a month to reduce the problem of frequent adjustments and cumbersome grid regulation.

[0013] In one embodiment of the present invention, the specific calculation method of the influence coefficient C of the energy storage module is: according to the formula:

[0014] Where p is the growth coefficient of the energy storage module. When the wind speed in the area is always low, it is meaningless to store electricity for a long time, and it is easy to cause the electricity to be lost in the energy storage module. C is adjusted once a month. If the wind speed is low for a long time, the electricity of the energy storage module will be exhausted within two months. The advantage of this is that most of the electricity is effectively used in the power grid instead of being lost in vain. However, when the wind speed in the area is always strong, the energy storage module will be fully charged, and the remaining power can only be added to the grid directly without paying attention to the constant power value, which makes grid regulation difficult. In addition, the energy storage module is in an oversaturated state for a long time, which will lead to a high safety risk. Therefore, the energy storage module growth coefficient p is set; The above formula partitions x before calculation. It means that the energy storage module has a moderate amount of energy at around 50%. Since the energy storage module has sufficient energy for both energy storage and energy release, C is set to 1, which does not affect The value of This means that the energy storage module has less power at this time, and B cannot be kept at a high value, otherwise the energy storage module will be consumed quickly, and there will be no power supply when the grid needs it; ,because They are all percentage values, so The value is too small. Add 0.5 to keep the value above 0.5 and below 1, and then substitute In the formula, the value of B can be appropriately reduced; It means that the energy storage module has more power at this time. In order to prevent the energy storage module from being filled up quickly, B is appropriately increased. In this way, most of the power of the wind power generation module will be supplemented to the power grid, and the amount transmitted to the energy storage module will be reduced, so that the energy storage module will not be filled up quickly. , the final value can be maintained between 1 and 2, so that the value of B can be appropriately increased.

[0015] In one embodiment of the present invention, the specific method for the energy storage module to obtain the module growth coefficient p is: according to the formula:

[0016] Get the value of the module growth coefficient p; in Indicates the percentage value change of the energy storage module per unit time; Indicates the amount of change per unit time; the unit time can be one hour; Where N represents the electric power at the output end of the wind power generation module; and is the weight coefficient; the weight coefficient is used to indicate the importance or influence of the variable in the calculation; s represents the correction coefficient; the correction coefficient is used to correct the value of N; since N represents the output power of the wind power generation module, the data is relatively large, so N is corrected by s to make N a single-digit unit, and the value is determined based on the average power generation of the wind power generation module in previous years; like Take 1, which means one hour. It is 0.1, which means that the change in energy storage in 1 hour is 0.1, which is 1 after multiplying by 10. The reason why N is included is that when the energy storage is high, but the external wind force is small and B is adjusted once a month, if B is greatly increased at this time, the energy storage will be consumed quickly, so the output power N of the wind power generation module needs to be included.

[0017] In one embodiment of the present invention, the weight coefficient and The method of obtaining is: According to the formula:

[0018]

[0019] Get the weight coefficient and ; Where N represents the electric power at the output end of the wind power generation module; M represents the average power generation of the wind power module per unit time; Get weight coefficient and ;when Therefore, the wind power module has a large power at this time, and B can be greatly increased according to the amount of energy storage, so that the energy storage module will not be consumed quickly. Take 0, so the value of p is calculated only based on the change of the energy storage module per unit time. If the value of p exceeds 1, it will be substituted , which leads to an increase in the value of C, and thus an increase in the value of B. In this way, the electric energy generated by the wind power generation module will be transmitted to the power grid in large quantities, alleviating the problem of overflow caused by rapid energy storage in the energy storage module; when ,At this time, the electric power of the wind power generation module is relatively small, and the data proportion of the energy storage module is reduced; and It indicates the difference between the power generation of the wind power generation module at this time and the average power generation in previous years. If the difference is large, it means that the external wind volume is low at this time. The larger the proportion, the less likely the energy storage module will be consumed quickly.

[0020] In one embodiment of the present invention, the maximum energy storage threshold of the energy storage module is set at ; When the energy storage value of the energy storage module exceeds the set maximum energy storage threshold, all the power output of the wind power generation module is supplied to the grid. At the same time, during the energy supply process, the output power is fixed at , where w represents the maximum power generation of the wind power module; When the wind power module is at its maximum power generation, the remaining power is still stored in the energy storage module. When the energy storage module outputs the stored electric energy to the grid together with the wind power generation module, and the output power is still maintained at ; Through the above processing method, since it is impossible for the wind power generation module to maintain the maximum power generation at all times, the output power can be kept in an extremely high range, so the electric energy in the energy storage module can be consumed in time. Because it exceeds the threshold, it proves that the energy storage module is almost full at this time. In order not to waste electricity, the electric energy of the energy storage module can only be consumed quickly; The power generation of wind power modules is lower than When the energy storage module outputs the stored electric energy to the grid together with the wind power generation module, the purpose is to ensure a constant output process to the grid and reduce the regulation process of the grid; V can be 90, 90% of the output, which not only maintains high output but also has some adjustable space; The judgment process is a real-time judgment. When the energy storage value of the energy storage module exceeds the set maximum energy storage threshold, the above solution is directly executed; when it is lower than, it returns to the original output method.

[0021] In one embodiment of the present invention, a wind monitoring module is provided outside the wind power generation module, and the wind monitoring module is used to monitor regional wind speed and wind speed duration; According to the wind speed at which the wind power generation module outputs the maximum power generation power, the wind speed threshold is obtained; The wind monitoring module monitors the wind speed in the area in previous years and obtains the duration H of the wind speed exceeding the threshold and maintaining above the threshold; Obtain b according to the duration and the maximum power generation of the wind power generation module, where b represents the power generation of the wind turbine generator in H under the maximum wind force; Set the maximum energy storage value threshold of the energy storage module according to b ; Through the above processing method, the data of b represents how long the maximum wind speed in the local area lasted in previous years, and how much electricity the wind turbines in the area generated. By inferring from this data, sufficient space can be reserved in the energy storage module, so that the energy storage module will not be filled up quickly, but will continue to stably supply constant power to the power grid.

[0022] In one embodiment of the present invention, the The specific calculation method is:

[0023] Where E represents the maximum energy storage value of the energy storage module; Where w represents the maximum power generation of the wind power module; H represents the duration that the wind speed exceeds the threshold and remains above the threshold; b represents the power generation of the wind turbine in H under the maximum wind force; Calculated by this method , which happens to be the remaining electric energy after the wind power generation module outputs 90% of its power when there were strong winds in the region in previous years. If the annual maximum wind duration is not refreshed, the energy storage module can ensure that, in a continuous strong wind environment, the remaining energy storage value of the energy storage module can store excess electric energy, thereby avoiding the problem of excessive electric energy being transmitted to the grid without regulation, resulting in grid regulation difficulties; The above formula calculates The value represents the maximum power generation of the wind turbine when the external wind force is the strongest, minus the power generation transmitted to the grid; that is, the power that needs to be transmitted to the energy storage module; Through this calculation, it is possible to calculate how much energy storage equipment has left to fully absorb the inventory in continuous strong winds under previous years' conditions (because the value of H is detected in previous years); In this way, it can be in line with the regional weather conditions and the actual energy storage conditions of the energy storage module to develop a suitable .

[0024] The above technical solution of the present invention has the following advantages compared with the prior art: According to the present invention, by comparing the current amount of the power grid With current threshold method, when Less than When , it proves that the power demand of the power grid is at a low load, and the original power generation equipment of the power grid is sufficient to support the market power demand. At this time, only part of the power needs to be transmitted to the power grid at a constant power, and the remaining power needs to be transmitted to the energy storage module for storage; when Greater than When the power demand of the power grid is high, the power converted from the daily stored wind power is input into the power grid, which not only relieves the pressure on the power grid, but also reduces the combustion of thermal power. Since wind power is a clean energy, it has lower cost and less pollution to the environment than thermal power. The above treatment method not only relieves the load of the power grid, but also reduces the pollution to the environment. By comparing the numerical values ​​of the electric power N at the output end of the wind power generation module and the constant power B, when N is greater than B, it means that the power generation of the wind power generation module is large, and the remaining electric energy can be sent to the energy storage module for energy storage; when N is equal to B, it means that the power generation of the wind power generation module can basically maintain the power transmission to the power grid, and the energy storage module does not participate in the energy storage operation; when N is less than B, the power generation of the wind power generation module is small and less than the demand of the power grid; in the above embodiment, when N is greater than B or when N is equal to B, the output electric power of the wind power generation module can meet the output of the constant power B to the power grid, and the regulating component can directly transfer the required electric power B from N to the power grid; when N is less than B, in order to maintain the constant electric power B to the power grid, part of the electric energy is transferred from the energy storage module, the transferred electric energy is combined with N, and the combined electric power value is equal to B before it is transferred to the power grid; through the above processing method, the stable transmission of electric energy to the power grid can be guaranteed, and the difficulty of regulating the power grid can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0026] Figure 1 It is a system diagram of the present invention. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0028] Reference Figure 1 As shown, an intelligent wind power energy storage integrated regulation system of the present invention comprises: Monitoring module: The monitoring module is used to monitor the current of the power grid , and output the current of the power grid ; If the demand for electricity increases, the current in the grid will increase accordingly; according to the calculation formula for electricity (where U is voltage, I is current, t is time, and e is electrical energy). When the voltage is relatively stable, the current is proportional to the electrical energy demand. Judgment module: The judgment module receives the current of the power grid output by the monitoring module , and compare the current of the power grid With current threshold ; Adjustment module: the adjustment module adjusts the power output line of the wind power generation module based on the comparison result of the judgment module; Among them, when Less than or equal to When the wind power generation module is powered, the electric energy is delivered to the grid at a constant power B, and the remaining electric energy is delivered to the energy storage module for storage; when Greater than When the power of the energy storage module and the power of the wind power generation module are simultaneously transmitted to the power grid; In the above embodiment, the wind power generation module is used to convert wind energy into electrical energy and regulate the voltage of the electrical energy. The power grid usually operates at a higher voltage level. After the voltage output by the wind turbine is boosted, it can better match the power grid system and meet the grid connection requirements. Specifically, the wind power generation module can be selected from the existing wind power generation equipment. The energy storage module is used to store the electrical energy converted by the wind power generation module, and can be a chemical storage battery. Wind power energy storage integration is a technology that combines wind power generation and energy storage technology. Wind power is the process of converting wind energy into electrical energy through wind turbines; energy storage technology refers to the technology of temporarily storing electrical energy so that it can be released when needed; the regulation system is to regulate the destination of electrical energy in wind power energy storage. There are two destinations for electrical energy: one is to connect directly to the power grid, and the other is to temporarily store electrical energy so that it can be released when needed. Current threshold The setting can be set to 70% of the regional historical power grid peak load; because the annual threshold All are adjusted based on data from previous years, because the high-load power situation of the power grid is not fixed, but is dynamically adjusted based on the real-time power supply and demand situation, power grid operating conditions, and external environmental factors. The advantage of this is that it reduces the long-term non-update of data. As infrastructure construction increases year by year, the maximum load that the power grid can withstand is also increasing year by year; In the embodiment of the present invention, when Less than When the load is low, it means that the power demand of the power grid is low and the original power generation equipment of the power grid is sufficient to support the market power demand. At this time, only part of the power needs to be transmitted to the power grid at a constant power, and the remaining power needs to be transmitted to the energy storage module for storage. when Greater than When the power demand of the power grid is high, the power converted from the daily stored wind power is input into the power grid, which not only relieves the pressure on the power grid, but also reduces the combustion of thermal power. Since wind power is a clean energy, it has lower cost and less pollution to the environment than thermal power. The above treatment method not only relieves the load of the power grid, but also reduces the pollution to the environment. Since the power generation of the wind power generation module is affected by factors such as the environment and is difficult to maintain constant, the power output by the wind power generation module is a variable value; if the environmental wind force is strong, the power generation of the wind power generation module is large, and when the environmental wind force is weak, the power generation of the wind power generation module is small; therefore, it is difficult to transmit relatively stable electric energy to the power grid, resulting in the complexity of the power grid allocation process. Based on this, the above embodiment controls the electric energy of the wind power generation module to be transmitted to the power grid at a constant power B, which is convenient for the power grid allocation; When the wind power generation module inputs non-constant power to the grid without adjustment, the power of the grid is regulated according to regional demand, and the required power is obtained from multiple power generation modules connected to the grid. If the wind power generation module transmits non-constant power to the grid, the grid will need to constantly adjust the electricity obtained from other power generation modules, making the grid allocation complicated.

[0029] The monitoring module can also be used to monitor the electric power N at the output end of the wind power generation module, and output the electric power N value at the output end of the wind power generation module to the judgment module; The judgment module is also used to compare the numerical values ​​of the electric power N at the output end of the wind power generation module and the constant power B; specifically: When the electric energy power N at the output end of the wind power generation module is greater than the constant power B, the regulating module transmits the excess electric energy generated by the wind power generation module to the energy storage module for energy storage; When the electric energy power N at the output end of the wind power generation module is equal to the constant power B, the regulating module transmits the electric energy generated by the wind power generation module to the power grid; When the electric energy power N at the output end of the wind power generation module is less than the constant power B, the energy storage module and the wind power generation module simultaneously transmit electric energy to the power grid to keep the transmission power constant.

[0030] In the above embodiment, the electric power N at the output end of the wind power generation module is the electric power actually output when the wind power generation module performs power generation operation; When the electric energy N at the output end of the wind power generation module is greater than the constant power B, it means that the power generation power of the wind power generation module is large. At this time, the remaining electric energy can be sent to the energy storage module for energy storage; When the electric energy power N at the output end of the wind power generation module is equal to the constant power B, it means that the power generation power of the wind power generation module can basically maintain the transmission of electric energy to the power grid, and the energy storage module does not participate in the energy storage operation at this time; When the electric energy power N at the output end of the wind power generation module is less than the constant power B, the power generation power of the wind power generation module is small and less than the demand of the power grid; In the above embodiment, when the electric energy power N at the output end of the wind power generation module is greater than the constant power B or when the electric energy power N at the output end of the wind power generation module is equal to the constant power B, the output electric energy power of the wind power generation module can meet the output of the constant power B to the power grid. At this time, the regulating component directly retrieves the required electric energy power B from N and transmits it to the power grid; when the electric energy power N at the output end of the wind power generation module is less than the constant power B, in order to maintain a constant electric energy power B to the power grid, part of the electric energy is retrieved from the energy storage module, the retrieved electric energy is combined with N, and the combined electric energy power value is equal to B before it is transmitted to the power grid; through the above processing method, the stable transmission of electric energy to the power grid can be guaranteed, reducing the difficulty of regulating the power grid.

[0031] The calculation method of the constant power B output by the wind power generation module to the power grid is: The average power generation power M of the wind power generation module per unit time is obtained; first, the instantaneous power generation power of the wind power generation module is obtained; the acquisition method is to measure the instantaneous voltage and instantaneous current of the wind power generation module through a traditional measurement setting, and then measure the instantaneous phase difference between the voltage and the current, and multiply the three to obtain the instantaneous power, and the obtained value is the data of the previous year; the unit time can be one year, and all the instantaneous powers in one year are accumulated, and then divided by the time interval, which can be one day, to obtain the average power of the wind power generation module in one year; According to the formula: Where K is the loss coefficient; the loss coefficient is determined by the use time, mechanical loss and electrical loss of the wind power module, and K is less than or equal to 1; C is the influence coefficient of the energy storage module; according to the storage capacity of the energy storage module, the value of the constant power B is adjusted. If the energy storage module is fully charged and the electric power N at the output end of the wind power generation module is greater than B, there will be a problem that the excess power has nowhere to go. Therefore, it is necessary to adjust the value of B appropriately according to the storage capacity of the energy storage module to reduce the occurrence of such situations.

[0032] The value of the constant power B in the above embodiment is linked to the average power generation of the wind power generation equipment in the previous year. This ensures that, during the year, the constant power B continuously transmitted by the wind power equipment multiplied by the total time is roughly equivalent to the total power generation of the previous year, thereby reducing the problem of excessive power output leading to insufficient power generation, or too little power output leading to excessive energy storage in the energy storage module.

[0033] The above formula is based on the annual average power generation M of the wind power generation module in the previous year. This data is the actual recorded data at the end of the previous year. Based on the average power of the previous year, the foundation of constant power B can be laid. The selection of constant power B based on the average value of the previous year is based on the premise that if the regional wind power fluctuation is maintained within a certain range, the power generation of the wind power generation module can stably meet the needs of the power grid; and the loss coefficient K is determined according to the use time of the equipment and the electrical loss, because as the use time increases, there will be deviations in various data between this year's equipment and last year's equipment. The calculated data can offset the data errors caused by mechanical loss and other reasons. On this basis, the influence coefficient C of the energy storage module is further introduced. If the energy storage module is fully charged and the electric power N at the output end of the wind power generation module is greater than B, there will be a problem that the excess power has nowhere to go. Therefore, it is necessary to adjust the value of B appropriately according to the storage capacity of the energy storage module to reduce the occurrence of such situations. This can better fit the actual situation of each year, and thus more accurately formulate the constant power B. The B obtained by multiplying the three can ensure that the calculated B is more in line with the actual situation.

[0034] The influence coefficient C of the energy storage module is determined according to the energy storage condition of the energy storage module; First, obtain the percentage value x of the energy storage in the energy storage module; Set minimum threshold and the maximum threshold ;in Less than ; When x is less than When x is greater than When x is located at and When between, C takes 1; x is less than Indicates that the energy storage module is insufficient. At this time, the influence coefficient C of the energy storage module decreases, which will reduce the constant power B; x is less than It also means that the external wind force is low, the power provided by the wind cannot meet the constant power B, and energy storage cannot be performed. Reducing the constant power B can extend the time of transmitting electricity to the grid. When x is greater than When , it indicates that the energy storage module has sufficient energy storage. At this time, the influence coefficient C of the energy storage module increases, which can increase the constant power B and prevent the energy storage module from being saturated too early. You can take 35. You can take 65, then Indicates 35% of power. It indicates that the power is 65%. When the area continues to have strong winds, the energy storage module will continue to store energy. If the constant power B is maintained, it is easy to cause the energy storage module to be quickly filled. If the strong wind continues next month, the energy storage module may fail to store energy and can only be replaced or the excess power may be transmitted to the grid in a fluctuating manner. If the area continues to be windless, the energy storage module will maintain a constant power B to output to the outside, and the power will be quickly exhausted. It cannot provide timely support when the grid is under high load. Therefore, the influence coefficient C of the energy storage module is used to change the value of the constant power B regularly, so that the storage capacity in the energy storage module can be maintained within a certain range for a long time to adapt to various conditions. The adjustment time of the constant power B can be once a month to reduce the problem of frequent adjustments and cumbersome grid regulation.

[0035] The specific calculation method of the influence coefficient C of the energy storage module is: according to the formula:

[0036] Where p is the growth coefficient of the energy storage module. When the wind speed in the area is always low, it is meaningless to store electricity for a long time, and it is easy to cause the electricity to be lost in the energy storage module. C is adjusted once a month. If the wind speed is low for a long time, the electricity of the energy storage module will be exhausted within two months. The advantage of this is that most of the electricity is effectively used in the power grid instead of being lost in vain. However, when the wind speed in the area is always strong, the energy storage module will be fully charged, and the remaining electric energy can only be added directly to the grid without paying attention to the constant power value, which makes grid regulation difficult. In addition, the energy storage module is in an oversaturated state for a long time, which will lead to a higher safety risk. Therefore, the energy storage module growth coefficient p is set.

[0037] The above formula partitions x before calculation. It means that the energy storage module has a moderate amount of energy at around 50%. Since the energy storage module has sufficient energy for both energy storage and energy release, C is set to 1, which does not affect The value of This means that the energy storage module has less power at this time, and B cannot be kept at a high value, otherwise the energy storage module will be consumed quickly, and there will be no power supply when the grid needs it; ,because They are all percentage values, so The value is too small. Add 0.5 to keep the value above 0.5 and below 1, and then substitute In the formula, the value of B can be appropriately reduced; It means that the energy storage module has more power at this time. In order to prevent the energy storage module from being filled up quickly, B is appropriately increased. In this way, most of the power of the wind power generation module will be supplemented to the power grid, and the amount transmitted to the energy storage module will be reduced, so that the energy storage module will not be filled up quickly. , the final value can be maintained between 1 and 2, so that the value of B can be appropriately increased.

[0038] The specific method for the energy storage module to obtain the module growth coefficient p is: according to the formula:

[0039] Get the value of the module growth coefficient p; in Indicates the percentage value change of the energy storage module per unit time; Indicates the amount of change per unit time; the unit time can be one hour; Where N represents the electric power at the output end of the wind power generation module; and is the weight coefficient; the weight coefficient is used to indicate the importance or influence of the variable in the calculation; s represents the correction coefficient; the correction coefficient is used to correct the value of N; since N represents the output power of the wind power generation module, the data is relatively large, so N is corrected by s to make N a single-digit unit, and the value is determined based on the average power generation of the wind power generation module in previous years; like Take 1, which means one hour. It is 0.1, which means that the change in energy storage in 1 hour is 0.1, which is 1 after multiplying by 10. The reason why N is included is that when the energy storage is high, but the external wind force is small and B is adjusted once a month, if B is greatly increased at this time, the energy storage will be consumed quickly, so the output power N of the wind power generation module needs to be included.

[0040] The weight coefficient and The method of obtaining is: According to the formula:

[0041]

[0042] Get the weight coefficient and ; Where N represents the electric power at the output end of the wind power generation module; M represents the average power generation of the wind power module per unit time; Get weight coefficient and ;when Therefore, the wind power module has a large power at this time, and B can be greatly increased according to the amount of energy storage, so that the energy storage module will not be consumed quickly. Take 0, so the value of p is calculated only based on the change of the energy storage module per unit time. If the value of p exceeds 1, it will be substituted This causes the value of C to increase, which in turn causes the value of B to increase. In this way, the electricity generated by the wind power generation module will be transmitted to the power grid in large quantities, alleviating the problem of overflow caused by rapid energy storage in the energy storage module. when ,At this time, the electric power of the wind power generation module is relatively small, and the data proportion of the energy storage module is reduced; and It indicates the difference between the power generation of the wind power generation module at this time and the average power generation in previous years. If the difference is large, it means that the external wind volume is low at this time. The larger the proportion, the less likely the energy storage module will be consumed quickly.

[0043] The maximum energy storage threshold of the energy storage module is set at ; When the energy storage value of the energy storage module exceeds the set maximum energy storage threshold, all the power output of the wind power generation module is supplied to the grid. At the same time, during the energy supply process, the output power is fixed at , where w represents the maximum power generation of the wind power module; When the wind power module is at its maximum power generation, the remaining power is still stored in the energy storage module. When the energy storage module outputs the stored electric energy to the grid together with the wind power generation module, and the output power is still maintained at ; Through the above processing method, since it is impossible for the wind power generation module to maintain the maximum power generation at all times, the output power can be kept in an extremely high range, so the electric energy in the energy storage module can be consumed in time. Because it exceeds the threshold, it proves that the energy storage module is almost full at this time. In order not to waste electricity, the electric energy of the energy storage module can only be consumed quickly; The power generation of wind power modules is lower than When the energy storage module outputs the stored electric energy to the grid together with the wind power generation module, the purpose is to ensure a constant output process to the grid and reduce the regulation process of the grid; V can be 90, 90% of the output, which not only maintains high output but also has some adjustable space; The judgment process is a real-time judgment. When the energy storage value of the energy storage module exceeds the set maximum energy storage threshold, the above solution is directly executed; when it is lower than, it returns to the original output method.

[0044] A wind monitoring module is provided outside the wind power generation module, and the wind monitoring module is used to monitor regional wind speed and wind speed duration; According to the wind speed at which the wind power generation module outputs the maximum power generation power, the wind speed threshold is obtained; The wind monitoring module monitors the wind speed in the area in previous years and obtains the duration H of the wind speed exceeding the threshold and maintaining above the threshold; According to the duration and the maximum power generation power of the wind power generation module, a value b of the power generation amount of the wind power generation module within the duration is obtained; Set the maximum energy storage value threshold of the energy storage module according to b ; Through the above processing method, the data of b represents how long the maximum wind speed in the local area lasted in previous years, and how much electricity the wind turbines in the area generated. By inferring from this data, sufficient space can be reserved in the energy storage module, so that the energy storage module will not be filled up quickly, but will continue to stably supply constant power to the power grid.

[0045] Said The specific calculation method is:

[0046] Where E represents the maximum energy storage value of the energy storage module; Where w represents the maximum power generation of the wind power module; H represents the duration that the wind speed exceeds the threshold and remains above the threshold; b represents the power generation of the wind turbine in H under the maximum wind force; Calculated by this method , which happens to be the remaining electric energy after the wind power generation module outputs 90% of its power when there were strong winds in the region in previous years. If the annual maximum wind duration is not refreshed, the energy storage module can ensure that, in a continuous strong wind environment, the remaining energy storage value of the energy storage module can store excess electric energy, thereby avoiding the problem of excessive electric energy being transmitted to the grid without regulation, resulting in grid regulation difficulties; The above formula represents the value remaining after deducting the power generated by the wind turbine to the grid when the external wind force is the strongest; that is, the power that needs to be transmitted to the energy storage module. Through this calculation, it is possible to calculate how much energy storage equipment has left to fully absorb the inventory in continuous strong winds under previous years' conditions (because the value of H is detected in previous years); In this way, it can be in line with the regional weather conditions and the actual energy storage conditions of the energy storage module to develop a suitable .

[0047] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. An intelligent wind power energy storage integrated regulation system, characterized in that: include: Monitoring module: The monitoring module is used to monitor the current of the power grid , and output the current of the grid ; Judgment module: The judgment module receives the current of the power grid output by the monitoring module , and compare the current of the power grid With current threshold ; Adjustment module: the adjustment module adjusts the power output line of the wind power generation module based on the comparison result of the judgment module; Among them, when Less than or equal to When the wind power generation module is powered, the electric energy is delivered to the grid at a constant power B, and the remaining electric energy is delivered to the energy storage module for storage; when Greater than When the power is in the form of a wind turbine, the electric energy of the energy storage module and the electric energy of the wind power generation module are simultaneously transmitted to the power grid.

2. The intelligent wind power energy storage integrated regulation system according to claim 1, characterized in that: The monitoring module can also be used to monitor the electric power N at the output end of the wind power generation module, and output the electric power N value at the output end of the wind power generation module to the judgment module; The judgment module is also used to compare the numerical values ​​of the electric power N at the output end of the wind power generation module and the constant power B; specifically: When the electric energy power N at the output end of the wind power generation module is greater than the constant power B, the regulating module transmits the excess electric energy generated by the wind power generation module to the energy storage module for energy storage; When the electric energy power N at the output end of the wind power generation module is equal to the constant power B, the regulating module transmits the electric energy generated by the wind power generation module to the power grid; When the electric energy power N at the output end of the wind power generation module is less than the constant power B, the energy storage module and the wind power generation module simultaneously transmit electric energy to the power grid to keep the transmission power constant.

3. The intelligent wind power energy storage integrated regulation system according to claim 2 is characterized in that: The calculation method of the constant power B output by the wind power generation module to the power grid is: Obtain the average power generation M of the wind power generation module per unit time; According to the formula: ； Where K is the loss coefficient; C is the influence coefficient of the energy storage module.

4. The intelligent wind power energy storage integrated regulation system according to claim 3 is characterized in that: The influence coefficient C of the energy storage module is determined according to the energy storage condition of the energy storage module; First, obtain the percentage value x of the energy storage in the energy storage module; Set minimum threshold and the maximum threshold ;in Less than ; When x is less than When x is greater than When x is located at and When , C is 1.

5. The intelligent wind power energy storage integrated regulation system according to claim 4 is characterized in that: The specific calculation method of the influence coefficient C of the energy storage module is: according to the formula: ； Where p is the growth coefficient of the energy storage module.

6. The intelligent wind power energy storage integrated regulation system according to claim 5, characterized in that: The specific method for the energy storage module to obtain the module growth coefficient p is: according to the formula: ； Get the value of the module growth coefficient p; in Indicates the percentage value change of the energy storage module per unit time; Indicates the amount of change per unit time; Where N represents the electric power at the output end of the wind power generation module; u1 and u2 are weight coefficients; The weight coefficient is used to indicate the importance or influence of a variable in the calculation.

7. The intelligent wind power energy storage integrated regulation system according to claim 6, characterized in that: The weight coefficient and The method of obtaining is: According to the formula: ； ； Get the weight coefficient and ; Where N represents the electric power at the output end of the wind power generation module; M represents the average power generation of the wind power generation module per unit time.

8. The intelligent wind power energy storage integrated regulation system according to claim 7, characterized in that: The maximum energy storage threshold of the energy storage module is set at ; When the energy storage value of the energy storage module exceeds the set maximum energy storage threshold, all the power output of the wind power generation module is supplied to the grid. At the same time, during the energy supply process, the output power is fixed at , where w represents the maximum power generation of the wind power module; When the wind power module is at its maximum power generation, the remaining power is still stored in the energy storage module. When the energy storage module outputs the stored electric energy to the grid together with the wind power generation module, and the output power is still maintained at .

9. The intelligent wind power energy storage integrated regulation system according to claim 8, characterized in that: A wind monitoring module is provided outside the wind power generation module, and the wind monitoring module is used to monitor regional wind speed and wind speed duration; According to the wind speed at which the wind power generation module outputs the maximum power generation power, the wind speed threshold is obtained; The wind monitoring module monitors the wind speed in the area in previous years and obtains the duration H of the wind speed exceeding the threshold and maintaining above the threshold; Obtain a value b of the power generation amount of the wind power generation module within the duration according to the duration and the maximum power generation power of the wind power generation module; Set the maximum energy storage value threshold of the energy storage module according to b .

10. The intelligent wind power energy storage integrated regulation system according to claim 9, characterized in that: Said The specific calculation method is: ； Where E represents the maximum energy storage value of the energy storage module; Where w represents the maximum power generation of the wind power module; H represents the duration that the wind speed exceeds the threshold and remains above the threshold; b represents the power generation of the wind turbine in H under maximum wind force.

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