New energy and thermal power cooperative capability evaluation system and method

Abstract

The invention discloses a new energy and thermal power cooperation capability evaluation system. The system comprises a new energy utilization rate analysis module which calculates a new energy utilization rate through a new energy actual output and a new energy installed capacity of a selected area; the new energy output deviation analysis module calculates the new energy output deviation through the new energy actual output and the planned output of the selected area; the matching analysis module counts the maximum fluctuation of the actual output of the new energy in the selected area in the set time period, calculates the adjustment rate of each thermal power generating unit in the selected area in the set time period to obtain the sum of the adjustment rates of all the thermal power generating units, and obtains a matching coefficient by comparing the two values; and the cooperative capability comprehensive evaluation module obtains a comprehensive evaluation value through the new energy utilization rate, the new energy output deviation and the matching coefficient of the selected region, and compares the comprehensive evaluation value with a set threshold value to judge the new energy and thermal power cooperative capability. The stability and efficiency of the power system are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power grid dispatching automation, and specifically refers to a new energy and thermal power collaborative capacity evaluation system and method. Background Art

[0002] With the transformation of the global energy structure and the rapid development of clean energy, the proportion of new energy in the power system has been increasing year by year. However, the volatility and uncertainty of new energy are the main technical challenges in its grid-connected application. How to effectively cope with the volatility of new energy and maintain the stability and security of the power grid has become a key issue in power dispatching management.

[0003] The output of new energy is affected by factors such as climate, season, and weather, and usually has large volatility. Especially for wind power and photovoltaic power generation, there may be large output changes in a short period of time. This volatility not only affects the power balance of the power system, but also may pose a threat to the safe operation of the power grid. To ensure the stable operation of the power grid, the regulation ability of traditional thermal power plants, that is, thermal power, plays a key role when new energy generation fluctuates.

[0004] Thermal power has strong regulation ability and can quickly respond to the change of grid load, playing a role in balancing the load and coping with the fluctuation of new energy. However, there is still great uncertainty in the matching between the volatility of new energy and the regulation ability of thermal power. In the case of large fluctuations in new energy generation, whether the rapid regulation of thermal power can keep up in a timely and sufficient manner is directly related to the safety and economy of the power grid. How to effectively analyze the fluctuation of new energy, evaluate the regulation ability of thermal power and make reasonable dispatching is an important topic for improving the safety and operation efficiency of the power grid. Summary of the Invention

[0005] The purpose of the present invention is to provide a new energy and thermal power collaborative capacity evaluation system and method, which can improve the stability and efficiency of the power system.

[0006] To achieve this purpose, the new energy and thermal power collaborative capacity evaluation system designed by the present invention includes:

[0007] The new energy utilization rate analysis module is used to calculate the new energy utilization rate of the selected area by the actual output of new energy and the installed capacity of new energy in the selected area;

[0008] The new energy output deviation analysis module is used to calculate the new energy output deviation of the selected area by the actual output and the planned output of new energy in the selected area;

[0009] The matching analysis module is used to count the maximum fluctuation of the actual output of new energy in the selected area within a set time period, calculate the regulation rate of each thermal power unit in the selected area within the set time period, so as to obtain the total sum of the regulation rates of all thermal power units in the selected area within the set time period. By comparing the maximum fluctuation of the actual output of new energy and the total sum of the regulation rates of all thermal power units in the selected area within the set time period, the matching coefficient is obtained;

[0010] The comprehensive evaluation module for collaborative ability is used to obtain the comprehensive evaluation value of the collaborative ability between new energy and thermal power through the utilization rate of new energy and the output deviation of new energy in the selected area, as well as the matching coefficient, and compare the comprehensive evaluation value with the set threshold to judge the collaborative ability between new energy and thermal power.

[0011] Preferably, the specific process of calculating the utilization rate of new energy in the selected area by the actual output of new energy and the installed capacity of new energy in the selected area is as follows:

[0012] The calculation formula of the utilization rate of new energy is as follows:

[0013] Utilization rate of new energy = actual output of new energy / installed capacity of new energy * 100%

[0014] Among them, the actual output of new energy represents the electric power output actually generated by new energy power generation equipment within a certain time; the installed capacity of new energy represents the maximum power generation capacity that new energy power generation equipment can reach; the utilization rate of new energy represents the ratio between the actual power generation and the theoretical maximum power generation capacity, reflecting the actual power generation efficiency of new energy equipment.

[0015] Preferably, the output deviation is used to measure the difference between the actual power generation and the expected power generation of new energy power generation equipment. The output deviation includes positive deviation and negative deviation. Among them, the positive deviation means that the actual output is greater than the planned output. At this time, the actual power generation exceeds the expected power generation, and the new energy power generation equipment provides too much power, but there are problems in dispatching or the risk of overload of the power grid; the negative deviation means that the actual output is less than the planned output. At this time, the actual power generation is lower than the expected power generation, and the power generation of the new energy power generation equipment decreases. It is necessary to adjust the power generation of thermal power units in the power system to supplement the insufficient power.

[0016] Preferably, the specific process of calculating the output deviation of new energy in the selected area by the actual output and the planned output of new energy in the selected area is as follows:

[0017] The calculation formula of the output deviation is as follows:

[0018] Output deviation = (actual output of new energy - planned output) / planned output * 100%

[0019] Among them, the actual output of new energy represents the electricity actually generated by new energy power generation equipment within a specific time; the planned output represents the electricity that the new energy power generation equipment should generate according to the prediction within this time period.

[0020] Preferably, the specific process of statistically analyzing the maximum fluctuation of the actual output of new energy is as follows:

[0021] Within the set time period M, the maximum fluctuation of the actual output of new energy is denoted as a. There are X set time periods M in a day. Statistically analyze the fluctuations of the actual output of new energy within each set time period M and select the maximum fluctuation a of the actual output of new energy.

[0022] Preferably, the specific process of calculating the regulation rate of each thermal power unit in the selected area within the set time period and thus obtaining the total sum of the regulation rates of all thermal power units in the selected area within the set time period is as follows:

[0023] The calculation formula for the regulation rate of a thermal power unit is as follows:

[0024] K = 2 - (P max - P min ) / (P n * Δf)

[0025] Among them, K represents the regulation rate of the thermal power unit, P max is the maximum value of the output power of the thermal power unit, P min is the minimum value of the output power of the thermal power unit, P n is the rated power of the thermal power unit, and Δf is the frequency deviation of the automatic generation control signal;

[0026] Calculate the regulation rate of each thermal power unit in the selected area within the set time period M, and add up the regulation rates of all thermal power units in the selected area within the set time period M to obtain the total sum b of the regulation rates of all thermal power units in the selected area within the set time period M.

[0027] Preferably, the specific process of obtaining the matching coefficient by comparing the maximum fluctuation of the actual output of new energy and the total sum of the regulation rates of all thermal power units in the selected area within the set time period is as follows:

[0028] Within the set time period M, when the maximum fluctuation a of the actual output of new energy is less than or equal to the total sum b of the regulation rates of all thermal power units, the regulation ability of the thermal power unit matches the supporting ability of the fluctuation demand of new energy, and the regulation ability of the thermal power unit can meet the fluctuation demand of new energy; when the maximum fluctuation a of the actual output of new energy is greater than the total sum b of the regulation rates of all thermal power units, the regulation ability of the thermal power unit does not match the supporting ability of the fluctuation demand of new energy, and the regulation ability of the thermal power unit cannot meet the fluctuation demand of new energy;

[0029] Since there are X set time periods M within a day, the calculation formula for the matching coefficient is:

[0030] Matching coefficient = n / X

[0031] Where n represents the number of hours during which the regulation capacity of the thermal power unit matches the fluctuating demand of the new energy;

[0032] When the matching coefficient ≥ H, it indicates that the matching capacity between the regulation capacity of the thermal power unit and the fluctuating demand of the new energy within a day is strongly matched;

[0033] When I ≤ matching coefficient < H, it indicates that the matching capacity between the regulation capacity of the thermal power unit and the fluctuating demand of the new energy within a day is moderately matched;

[0034] When the matching coefficient < I, it indicates that the matching capacity between the regulation capacity of the thermal power unit and the fluctuating demand of the new energy within a day is weakly matched.

[0035] Preferably, the specific process of obtaining the comprehensive evaluation value of the new energy and thermal power coordination ability through the new energy utilization rate, output deviation, and matching coefficient in the selected area, and comparing the comprehensive evaluation value with the set threshold to judge the new energy and thermal power coordination ability is as follows:

[0036] The comprehensive evaluation value of the new energy and thermal power coordination ability is calculated by the following formula:

[0037] Coordination ability = w 1 · New energy utilization rate + w 2 · Output deviation + w 3 · Matching coefficient

[0038] Where w 1 is the weight of the new energy utilization rate, w 2 is the weight of the output deviation, w 3 is the weight of the matching coefficient;

[0039] When the coordination ability > threshold Y, the new energy and thermal power have a strong coordination ability;

[0040] When threshold Z ≤ coordination ability ≤ threshold Y, the new energy and thermal power have a medium coordination ability;

[0041] When the coordination ability is less than threshold Z, the new energy and thermal power have a weak coordination ability.

[0042] A method for evaluating the coordination ability of new energy and thermal power, which includes the following steps:

[0043] Calculate the new energy utilization rate of the selected area by dividing the actual output of the new energy in the selected area by the installed capacity of the new energy;

[0044] The new - energy actual output and planned output in the selected area are used to calculate the new - energy output deviation in the selected area.

[0045] The maximum fluctuation of the new - energy actual output in the selected area within the set time period is statistically analyzed, and the regulation rate of each thermal power unit in the selected area within the set time period is calculated, so as to obtain the total sum of the regulation rates of all thermal power units in the selected area within the set time period. By comparing the magnitude of the maximum fluctuation of the new - energy actual output and the total sum of the regulation rates of all thermal power units in the selected area within the set time period, a matching coefficient is obtained.

[0046] Based on the new - energy utilization rate, new - energy output deviation in the selected area, and the matching coefficient, a comprehensive evaluation value of the new - energy and thermal - power collaborative ability is obtained, and the comprehensive evaluation value is compared with the set threshold to judge the new - energy and thermal - power collaborative ability.

[0047] A computer program product includes a computer program. When the computer program is executed by a processor, the steps of the above - mentioned method are implemented.

[0048] Advantages of the present invention:

[0049] The present invention can effectively help the power dispatching department formulate a more scientific and reasonable dispatching plan according to the evaluation results of the new - energy and thermal - power collaborative ability. In the case of strong collaborative ability, new - energy power generation can be preferentially dispatched to reduce the thermal - power output; in the case of weak collaborative ability, the overall system's collaborative ability can be improved by enhancing the regulation ability of thermal power units or optimizing the dispatching strategy of new energy; the present invention can enhance the stability and efficiency of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is a structural schematic diagram of the present invention;

[0051] Figure 2 is a flowchart of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0052] The following further details the present invention in conjunction with the drawings and specific embodiments:

[0053] Embodiment 1

[0054] An evaluation system for new - energy and thermal - power collaborative ability, as Figure 1 shown, includes:

[0055] The new energy utilization rate analysis module is used to calculate the new energy utilization rate of the selected area by the actual output of new energy (new energy includes wind power generation and solar power generation) and the new energy installed capacity in the selected area (selected control area). This design can evaluate the actual efficiency and potential of new energy power generation, determine whether the new energy resources are fully utilized, and whether there is room for optimization;

[0056] The new energy output deviation analysis module is used to calculate the new energy output deviation of the selected area by the actual output and planned output of new energy in the selected area. This design can analyze the deviation between the actual power generation of new energy and the predicted power generation, and reveal the volatility of new energy and the inaccuracy of prediction;

[0057] The matching analysis module is used to statistically analyze the maximum fluctuation of the actual output of new energy in the selected area within a set time period, calculate the regulation rate of each thermal power unit in the selected area within the set time period, so as to obtain the total sum of the regulation rates of all thermal power units in the selected area within the set time period. By comparing the magnitude of the maximum fluctuation of the actual output of new energy and the total sum of the regulation rates of all thermal power units in the selected area within the set time period (the unit of the maximum fluctuation of the actual output of new energy and the total sum of the regulation rates of all thermal power units is mw / 5min, where mw is megawatt), the matching coefficient is obtained. This design can evaluate whether the regulation ability of thermal power units (the regulation ability of thermal power units refers to their ability to quickly adjust the output power to compensate for the power supply fluctuations caused by new energy fluctuations) is sufficient to cope with the fluctuations of new energy power generation;

[0058] The comprehensive evaluation module of collaborative ability is used to obtain the comprehensive evaluation value of the collaborative ability of new energy and thermal power through the new energy utilization rate, new energy output deviation, and matching coefficient in the selected area, and compare the comprehensive evaluation value with the set threshold to judge the collaborative ability of new energy and thermal power. This design can comprehensively understand the characteristics of new energy power generation, evaluate its impact on the power grid, and determine whether thermal power units can provide sufficient support, so as to obtain a comprehensive evaluation result of the collaborative ability of new energy and thermal power.

[0059] In the above technical solution, the specific process of calculating the new energy utilization rate of the selected area by the actual output of new energy and the new energy installed capacity in the selected area is as follows:

[0060] The calculation formula of the new energy utilization rate is as follows:

[0061] New energy utilization rate = actual output of new energy / new energy installed capacity * 100%

[0062] Among them, the actual output of new energy represents the electric power output actually generated by new energy power generation equipment within a certain period of time; the installed capacity of new energy represents the maximum power generation capacity that new energy power generation equipment can reach; the utilization rate of new energy represents the ratio between the actual power generation and the theoretical maximum power generation capacity, reflecting the actual power generation efficiency of new energy equipment;

[0063] When the utilization rate of new energy is lower than A (A is 40%), the collaborative ability between new energy and thermal power is weak (at this time, the utilization rate of new energy is low (unstable output), indicating that thermal power units have to be frequently dispatched to supplement the shortage of new energy, resulting in excessive utilization of thermal power resources and increased carbon emissions); when the utilization rate of new energy is higher than B (B is 60%) and lower than C (C is 80%), the collaborative ability between new energy and thermal power is strong (a higher utilization rate of new energy means that thermal power units can be flexibly adjusted to reduce output when the output of new energy is high, thus minimizing fuel consumption and carbon emissions to the greatest extent); the above design is used to evaluate the actual efficiency and potential of new energy power generation, help determine whether new energy is fully utilized, and provide necessary background information for subsequent analysis of output deviation and matching analysis.

[0064] In the above technical solution, the output deviation is used to measure the difference between the actual power generation and the expected power generation of new energy power generation equipment. The output deviation includes positive deviation and negative deviation. Among them, the positive deviation means that the actual output is greater than the planned output. At this time, the actual power generation exceeds the expected power generation, and the new energy power generation equipment provides too much power, but there are problems in dispatching or risks of grid overload; the negative deviation means that the actual output is less than the planned output. At this time, the actual power generation is lower than the expected power generation, and the power generation of the new energy power generation equipment decreases, and it is necessary for the power system to adjust the power generation of thermal power units to supplement the insufficient power.

[0065] In the above technical solution, the specific process of calculating the output deviation of new energy in the selected area through the actual output and planned output of new energy in the selected area is as follows:

[0066] The calculation formula of the output deviation is as follows:

[0067] Output deviation = (Actual output of new energy - Planned output) / Planned output * 100%

[0068] Among them, the actual output of new energy represents the electric power actually generated by new energy power generation equipment within a specific period of time; the planned output represents the electric power that new energy power generation equipment should generate according to the prediction during this time period;

[0069] When the output deviation is higher than D (D is 30%), the collaborative ability between new energy and thermal power is weak (at this time, the output deviation is large, which means that thermal power units need to cope with greater uncertainty and the collaborative ability is weak); when the output deviation is higher than E (E is 10%) and lower than F (F is 20%), the collaborative ability between new energy and thermal power is strong (the prediction accuracy of new energy is relatively high, which means that the system can be scheduled more precisely and thermal power units can also respond effectively); the above design is used to clarify the deviation of new energy power generation, provide basic data for subsequent matching analysis, help evaluate the matching of the regulation ability between thermal power units and new energy, and further optimize the dispatching strategy of the power grid and improve the overall efficiency of the system.

[0070] In the above technical solution, the specific process of statistically analyzing the maximum fluctuation of the actual output of the new energy is as follows:

[0071] During the set time period M (M is 5 minutes), the maximum fluctuation of the actual output of the new energy is denoted as a. There are X (X is 288, and there are 288 five-minute time periods in a day (24h * 60min / 5min)) set time periods M in a day. Statistically analyze the output fluctuation of the new energy within each set time period M and select the maximum fluctuation a of the actual output of the new energy; the above design is used to obtain the maximum fluctuation of the actual output of the new energy and provide data support for subsequent matching analysis.

[0072] In the above technical solution, the specific process of calculating the regulation rate of each thermal power unit in the selected area within the set time period and thus obtaining the total sum of the regulation rates of all thermal power units in the selected area within the set time period is as follows:

[0073] The calculation formula for the regulation rate of the thermal power unit is as follows:

[0074] K = 2 - (P max - P min ) / (P n * Δf)

[0075] where K represents the regulation rate of the thermal power unit, P max is the maximum value of the output power of the thermal power unit, P min is the minimum value of the output power of the thermal power unit, P n is the rated power of the thermal power unit, and Δf is the frequency deviation of the automatic generation control signal;

[0076] Calculate the regulation rate of each thermal power unit in the selected area within the set time period M, and add up the regulation rates of all thermal power units in the selected area within the set time period M to obtain the total sum b of the regulation rates of all thermal power units in the selected area within the set time period M; the above design is used to obtain the total sum of the regulation rates of all thermal power units in the selected area and provide data support for subsequent comparison with the maximum fluctuation of the actual output of the new energy for matching analysis.

[0077] In the above technical solution, the specific process of obtaining the matching coefficient by comparing the maximum fluctuation of the actual output of new energy in the selected area within a set time period with the total adjustment rate of all thermal power units is as follows:

[0078] Within the set time period M, when the maximum fluctuation a of the actual output of new energy is less than or equal to the total adjustment rate b of all thermal power units, the adjustment ability of the thermal power units matches the supporting ability of the fluctuation demand of new energy, and the adjustment ability of the thermal power units can meet the fluctuation demand of new energy (at this time, the thermal power units can balance the system by increasing or decreasing the power to reduce the impact of fluctuations on the power grid); when the maximum fluctuation a of the actual output of new energy is greater than the total adjustment rate b of all thermal power units, the adjustment ability of the thermal power units does not match the supporting ability of the fluctuation demand of new energy, and the adjustment ability of the thermal power units cannot meet the fluctuation demand of new energy (other measures (such as enhancing energy storage, grid interconnection, or introducing a more quickly responsive standby power supply) need to be taken to maintain the stability of the power system).

[0079] Since there are X set time periods M in a day, the calculation formula for the matching coefficient is:

[0080] Matching coefficient = n / X

[0081] Where n represents the number of time periods when the adjustment ability of the thermal power units matches the supporting ability of the fluctuation demand of new energy (the higher the matching degree, the fewer the non-matching time periods);

[0082] When the matching coefficient ≥ H (H is 0.85), it indicates that the adjustment ability of the thermal power units and the supporting ability of the fluctuation demand of new energy in a day have a strong matching degree;

[0083] When I (I is 0.70) ≤ matching coefficient < H, it indicates that the adjustment ability of the thermal power units and the supporting ability of the fluctuation demand of new energy in a day have a medium matching degree;

[0084] When the matching coefficient < I, it indicates that the adjustment ability of the thermal power units and the supporting ability of the fluctuation demand of new energy in a day have a weak matching degree; the above design can help power system dispatching personnel and planning personnel evaluate the impact of new energy power generation on the stability of the power system and reasonably arrange the output adjustment ability of thermal power units or adjust the dispatching strategy of the power system.

[0085] In the above technical solution, the specific process of obtaining the comprehensive evaluation value of the coordination ability between new energy and thermal power through the new energy utilization rate and output deviation in the selected area, as well as the matching coefficient, and comparing the comprehensive evaluation value with the set threshold to judge the coordination ability between new energy and thermal power is as follows:

[0086] The comprehensive evaluation value of the coordination ability between new energy and thermal power is calculated by the following formula:

[0087] Synergy ability = w 1 · New energy utilization rate + w 2 · Output deviation + w 3 · Matching coefficient

[0088] Among them, w 1 is the weight of the new energy utilization rate, w 2 is the weight of the output deviation, w 3 is the weight of the matching coefficient (we can take w 1 = 0.4, w 2 = 0.3, w 3 = 0.3; where the new energy utilization rate reflects the usage efficiency of new energy in the system. In the collaborative evaluation of new energy and thermal power, the usage efficiency of new energy is usually one of the most important factors. A high new energy utilization rate means that new energy is fully utilized during the power generation process, thus reducing the dependence on thermal power. Therefore, the new energy utilization rate usually has a relatively large weight; the output deviation affects the stability of the system, but it does not directly determine the overall contribution of new energy. Therefore, its weight is slightly lower than that of the new energy utilization rate; the matching plays an important role in enhancing the synergy ability. However, relatively speaking, the new energy utilization rate is still the core factor affecting the system performance. Therefore, the weight of the matching is similar to that of the output deviation and slightly lower than that of the new energy utilization rate; by setting the weights to 0.4, 0.3, and 0.3, it can reasonably reflect the different contributions of different indicators to the synergy ability, making the comprehensive evaluation result not only highlight the utilization efficiency of new energy but also consider the stability and dispatching adaptability during the power generation process, thus obtaining a more scientific evaluation result of the synergy ability. This distribution method helps to reasonably optimize the dispatching strategy and improve the overall efficiency and stability of the system);

[0089] When the synergy ability > threshold Y (Y is 0.7), the new energy and thermal power have a strong synergy ability;

[0090] When threshold Z (Z is 0.5) ≤ synergy ability ≤ threshold Y, the new energy and thermal power have a medium synergy ability;

[0091] When the synergy ability is less than threshold Z, the new energy and thermal power have a weak synergy ability; The above design can effectively help the power dispatching department formulate a more scientific and reasonable dispatching plan according to the evaluation result of the synergy ability between new energy and thermal power, and improve the stability and efficiency of the power system.

[0092] Example 2

[0093] A method for evaluating the synergy ability between new energy and thermal power, such as Figure 2As shown, the new energy utilization rate is calculated by the actual output of new energy and the installed capacity of new energy in the selected area; the deviation of new energy output is calculated by the actual output and the planned output of new energy in the selected area; the maximum fluctuation of the actual output of new energy in the selected area within a set time period is statistically analyzed, the regulation rate of each thermal power unit in the selected area within the set time period is calculated, and the total regulation rate of all thermal power units in the selected area is obtained. By comparing the magnitudes of the two, the matching coefficient is obtained; the comprehensive evaluation value is obtained through the new energy utilization rate, the new energy output deviation, and the matching coefficient in the selected area, and the comprehensive evaluation value is compared with the set threshold to judge the collaborative ability of new energy and thermal power.

[0094] The specific method for evaluating the collaborative ability of new energy and thermal power includes the following steps:

[0095] The new energy utilization rate in the selected area is calculated by the actual output of new energy and the installed capacity of new energy in the selected area;

[0096] The deviation of new energy output in the selected area is calculated by the actual output and the planned output of new energy in the selected area;

[0097] The maximum fluctuation of the actual output of new energy in the selected area within a set time period is statistically analyzed, the regulation rate of each thermal power unit in the selected area within the set time period is calculated, and thus the total regulation rate of all thermal power units in the selected area within the set time period is obtained. By comparing the magnitudes of the maximum fluctuation of the actual output of new energy and the total regulation rate of all thermal power units in the selected area within the set time period, the matching coefficient is obtained;

[0098] The comprehensive evaluation value of the collaborative ability of new energy and thermal power is obtained through the new energy utilization rate, the new energy output deviation, and the matching coefficient in the selected area, and the comprehensive evaluation value is compared with the set threshold to judge the collaborative ability of new energy and thermal power.

[0099] Embodiment 3

[0100] A computer program product includes a computer program, characterized in that when the computer program is executed by a processor, the steps of the method described in Embodiment 2 are implemented.

[0101] The content not detailedly described in this specification belongs to the prior art well-known to those skilled in the art.

Claims

1. A new energy and thermal power synergy capability assessment system, characterized in that: It includes: The new energy utilization rate analysis module is used to calculate the new energy utilization rate of the selected area by calculating the actual output of new energy in the selected area and the installed capacity of new energy; The new energy output deviation analysis module is used to calculate the new energy output deviation of the selected area through the actual new energy output and planned output of the selected area; The matching analysis module is used to count the maximum fluctuation of the actual output of new energy in the selected area within the set time period, calculate the regulation rate of each thermal power unit in the selected area within the set time period, and thus obtain the sum of the regulation rates of all thermal power units in the selected area within the set time period, and obtain the matching coefficient by comparing the maximum fluctuation of the actual output of new energy in the selected area within the set time period with the sum of the regulation rates of all thermal power units; The comprehensive evaluation module of synergy capability is used to obtain the comprehensive evaluation value of the synergy capability of new energy and thermal power through the new energy utilization rate and new energy output deviation of the selected area, as well as the matching coefficient, and compare the comprehensive evaluation value with the set threshold to judge the synergy capability of new energy and thermal power.

2. The new energy and thermal power synergy capability evaluation system according to claim 1 is characterized by: The specific process of calculating the utilization rate of new energy in the selected area by the actual output of new energy in the selected area and the installed capacity of new energy is as follows: The calculation formula for the utilization rate of new energy is as follows: New energy utilization rate = actual output of new energy / installed capacity of new energy * 100% Among them, the actual output of new energy refers to the actual power output generated by new energy power generation equipment within a certain period of time; the installed capacity of new energy refers to the maximum power generation capacity that new energy power generation equipment can achieve; the utilization rate of new energy refers to the ratio between actual power generation and theoretical maximum power generation capacity, reflecting the actual power generation efficiency of new energy equipment.

3. The new energy and thermal power synergy capability assessment system according to claim 1 is characterized by: The output deviation is used to measure the difference between the actual power generation of new energy power generation equipment and the expected power generation. The output deviation includes positive deviation and negative deviation. A positive deviation means that the actual output is greater than the planned output. At this time, the actual power generation exceeds the expected power generation, and the new energy power generation equipment provides too much power, but there is a scheduling problem or the risk of overload of the power grid; a negative deviation means that the actual output is less than the planned output. At this time, the actual power generation is lower than the expected power generation, the power generation of the new energy power generation equipment is reduced, and the power system needs to adjust the power generation of the thermal power units to supplement the insufficient power.

4. The new energy and thermal power synergy capability assessment system according to claim 1 is characterized by: The specific process of calculating the output deviation of new energy in the selected area by the actual output and planned output of new energy in the selected area is as follows: The calculation formula of output deviation is as follows: Output deviation = (actual output of new energy - planned output) / planned output * 100% where: The actual output of renewable energy refers to the electricity actually generated by renewable energy power generation equipment within a specific period of time; the planned output refers to the electricity that renewable energy power generation equipment should generate during that period of time according to forecasts.

5. The new energy and thermal power synergy capability assessment system according to claim 1 is characterized by: The specific process of calculating the maximum fluctuation of the actual output of the new energy is as follows: The maximum fluctuation of the actual output of new energy in the set time period M is recorded as a. There are X set time periods M in a day. The fluctuation of the actual output of new energy in each set time period M is counted and the maximum fluctuation a of the actual output of new energy is selected.

6. The new energy and thermal power synergy capability assessment system according to claim 1 is characterized by: The specific process of calculating the regulation rate of each thermal power unit in the selected area within the set time period, thereby obtaining the sum of the regulation rates of all thermal power units in the selected area within the set time period is: The calculation formula for the regulation rate of thermal power units is as follows: K=2-(P max -P min ) / (P n *Δf) Where K represents the regulation rate of the thermal power unit, P max is the maximum output power of the thermal power unit, P min is the minimum output power of the thermal power unit, P n is the rated power of the thermal power unit, Δf is the frequency deviation of the automatic generation control signal; The regulation rate of each thermal power unit in the selected area within the set time period M is calculated, and the regulation rates of all thermal power units in the selected area within the set time period M are added together to obtain the total regulation rate b of all thermal power units in the selected area within the set time period M.

7. The new energy and thermal power synergy capability assessment system according to claims 5 and 6 is characterized in that: By comparing the maximum fluctuation of the actual output of renewable energy in the selected area within the set time period and the sum of the regulation rates of all thermal power units, the specific process of obtaining the matching coefficient is as follows: In the set time period M, when the maximum fluctuation a of the actual output of new energy is less than or equal to the sum of the regulation rates b of all thermal power units, the regulation capacity of the thermal power units matches the supporting capacity of the fluctuation demand of new energy, and the regulation capacity of the thermal power units can meet the fluctuation demand of new energy; when the maximum fluctuation a of the actual output of new energy is greater than the sum of the regulation rates b of all thermal power units, the regulation capacity of the thermal power units does not match the supporting capacity of the fluctuation demand of new energy, and the regulation capacity of the thermal power units cannot meet the fluctuation demand of new energy; Since there are X set time periods M in a day, the matching coefficient calculation formula is: Matching coefficient = n / X Among them, n represents the number of times that the regulation capacity of thermal power units matches the matching capacity of the fluctuating demand of new energy; When the matching coefficient ≥ H, it means that the regulation capacity of thermal power units within a day is highly matched with the matching capacity of the fluctuating demand of new energy; When I≤matching coefficient<H, it means that the regulation capacity of thermal power units within a day and the matching capacity of the fluctuating demand of new energy have a moderate match; When the matching coefficient is less than I, it means that the regulation capacity of thermal power units within a day is weakly matched with the supporting capacity of the fluctuating demand of new energy.

8. The new energy and thermal power synergy capability assessment system according to claims 2, 4 and 7 is characterized in that: The comprehensive evaluation value of the coordination ability of new energy and thermal power is obtained by selecting the utilization rate and output deviation of new energy in the selected area, as well as the matching coefficient. The specific process of comparing the comprehensive evaluation value with the set threshold to judge the coordination ability of new energy and thermal power is as follows: The comprehensive evaluation value of the synergy between new energy and thermal power is calculated by the following formula: Synergy capability = w1·new energy utilization rate + w2·output deviation + w3·matching coefficient Among them, w1 is the weight of the utilization rate of new energy, w2 is the weight of the output deviation, and w3 is the weight of the matching coefficient; When the synergy capability is greater than the threshold value Y, the synergy capability between new energy and thermal power is strong; When threshold Z≤synergy capacity≤threshold Y, new energy and thermal power have medium synergy capacity; When the synergy capacity is less than the threshold Z, the synergy capacity between new energy and thermal power is weak.

9. A method for evaluating the synergy between new energy and thermal power, characterized in that: It includes the following steps: The utilization rate of new energy in the selected area is calculated by calculating the actual output of new energy in the selected area and the installed capacity of new energy; The output deviation of new energy in the selected area is obtained by calculating the actual output and planned output of new energy in the selected area; The maximum fluctuation of the actual output of new energy in the selected area within the set time period is counted, and the regulation rate of each thermal power unit in the selected area within the set time period is calculated, so as to obtain the sum of the regulation rates of all thermal power units in the selected area within the set time period, and the matching coefficient is obtained by comparing the maximum fluctuation of the actual output of new energy in the selected area within the set time period with the sum of the regulation rates of all thermal power units; The comprehensive evaluation value of the synergy between new energy and thermal power is obtained by selecting the new energy utilization rate and new energy output deviation in the selected area, as well as the matching coefficient. The comprehensive evaluation value is compared with the set threshold to judge the synergy between new energy and thermal power.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method described in claim 9 are implemented.

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