Power system control method and system based on conventional power supply configuration

Abstract

The application discloses a power system control method and system based on a conventional power supply configuration, and the method comprises the following steps: based on the power consumption level of a to-be-powered region in a first preset time period, the total power generation of various types of conventional units in the to-be-powered region is calculated; the first target power generation of various types of conventional units in a second preset time period is obtained; when various types of conventional power supply units all reach the corresponding first target power generation in the second preset time period, the average power generation efficiency, average power generation and emission indicators of various types of conventional power supply units in the second preset time period are obtained and used as characteristic parameters of various types of conventional power supply units; and based on the characteristic parameters, the second target power generation and the corresponding power generation weight coefficient of various types of conventional power supply units in a third preset time period are allocated. The application has the beneficial effects that different types of conventional power supplies are coordinated and configured and controlled, the predetermined target power generation requirements are met, and the power generation scheduling problem in the power consumption peak period is solved.

Description

Technical Field

[0001] This invention relates to the field of power configuration technology, and in particular to a power system control method and system based on conventional power supply configuration. Background Technology

[0002] Conventional power sources refer to coal-fired power generation, gas-fired power generation, nuclear power, hydropower, etc., excluding distributed generation. Centralized renewable energy power generation refers to wind power, solar power, biomass power generation, etc., excluding distributed generation. Distributed generation refers to power generation facilities installed at or near the user's site, characterized by user-side self-consumption, surplus electricity fed into the grid, and balancing and regulating the distribution network system, or integrated energy cascade utilization and combined heat and power (CHP) facilities with power output.

[0003] Currently, the energy sector is increasingly inclined to develop the comprehensive utilization of centralized renewable energy power generation. The main characteristic of centralized renewable energy power generation is distributed generation, with power generation equipment mainly for self-consumption by users and installed near the user's site. Although the development of centralized renewable energy power generation can help alleviate the electricity consumption problem in some areas, the management of conventional power generation is currently mostly based on traditional "closed-door" management. That is, each type of conventional power source independently manages its power generation. Under the current electricity consumption situation in most areas, there may be multiple conventional power sources in a specific area. These multiple conventional power sources cannot be coordinated and managed, nor can timely dispatching be achieved during peak electricity consumption periods based on the power generation capacity of different types of conventional power sources.

[0004] Therefore, there is an urgent need for a control scheme for power systems that can configure conventional power sources. Summary of the Invention

[0005] To address the aforementioned problems, this invention proposes a power system control method and system based on conventional power supply configuration, primarily solving the problem of the inability to coordinate and manage multiple conventional power sources within a specific area.

[0006] To address the aforementioned technical problems, the first aspect of this invention proposes a power system control method based on conventional power supply configuration, comprising the following steps:

[0007] Based on the power absorption level of the area to be generated within the first preset time period, calculate the total power generation of various conventional units in the area to be generated.

[0008] Obtain the first target power generation of each type of conventional generating unit within a second preset time period;

[0009] Once all types of conventional power units reach the corresponding first target power generation within the second preset time period, the average power generation efficiency, average power generation, and emission index of all types of conventional power units within the second preset time period are obtained, and the corresponding average power generation efficiency, average power generation, and emission index are used as characteristic parameters of all types of conventional power units.

[0010] Based on the characteristic parameters, the conventional power generation units of each type are allocated a second target power generation within a third preset time period and a corresponding power generation weighting coefficient. The conventional power generation units of each type generate power and operate to the corresponding second target power generation according to the corresponding characteristic parameters and the power generation weighting coefficient.

[0011] In some implementations, the starting point of the second preset time period is the same as the starting point of the first preset time period, the ending point of the second preset time period is the starting point of the third preset time period, the ending point of the third preset time period is the same as the ending point of the first preset time period, and the first preset time period is the sum of the second preset time period and the third preset time period.

[0012] In some embodiments, the conventional power unit includes at least two of the following: coal-fired power generation units, gas-fired power generation units, nuclear power generation units, and hydropower generation units.

[0013] In some implementations, the total power generation of all types of conventional generating units within the power generation area is:

[0014] Q=Q1+Q2+Q3+Q4+a1Q′1+b1Q′2+c1Q′3+d1Q′4

[0015] In the formula, Q represents the total power generation of all types of conventional generating units, Q1 represents the first target power generation of coal-fired generating units in the second preset time period, Q2 represents the first target power generation of gas-fired generating units in the second preset time period, Q3 represents the first target power generation of nuclear power generating units in the second preset time period, Q4 represents the first target power generation of hydropower generating units in the second preset time period, Q'1 represents the second target power generation of coal-fired generating units in the third preset time period, Q'2 represents the second target power generation of gas-fired generating units in the third preset time period, Q'3 represents the second target power generation of nuclear power generating units in the third preset time period, Q'4 represents the second target power generation of hydropower generating units in the third preset time period, a1 represents the power generation weighting coefficient of coal-fired generating units in the third preset time period, b1 represents the power generation weighting coefficient of gas-fired generating units in the third preset time period, c1 represents the power generation weighting coefficient of nuclear power generating units in the third preset time period, and d1 represents the power generation weighting coefficient of hydropower generating units in the third preset time period.

[0016] In some implementations, the sum of the power generation weighting coefficients assigned to each type of conventional power unit during the third preset time period is 1.

[0017] In some implementations, if the first target power generation of any of the conventional power units is zero during the second preset time period, the power generation weight coefficient of the conventional power unit with the first target power generation is set to zero, and the sum of the power generation weight coefficients allocated to the remaining conventional power units is set to 1.

[0018] In some implementations, if the first target power generation of the conventional power unit does not reach the specified value within the second preset time period, the power generation weighting coefficient of the conventional power unit allocated to the third preset time period is at most 0.1.

[0019] In some implementations, the second target power generation of the conventional power unit allocated within a third preset time period is positively correlated with the corresponding power generation weighting coefficient.

[0020] A second aspect of the present invention provides a power system control system based on a conventional power supply configuration, comprising:

[0021] The first power generation acquisition unit is used to calculate the total power generation of various conventional units in the area to be generated based on the power absorption level of the area to be generated within a first preset time period.

[0022] The second power generation acquisition unit is used to acquire the first target power generation of various conventional generating units within a second preset time period.

[0023] The feature parameter acquisition unit acquires the average power generation efficiency, average power generation and emission index of each type of conventional power unit within the second preset time period after all types of conventional power units reach the corresponding first target power generation within the second preset time period, and uses the corresponding average power generation efficiency, average power generation and emission index as feature parameters of each type of conventional power unit.

[0024] A conventional power configuration unit is used to allocate a second target power generation and a corresponding power generation weighting coefficient to various conventional power units within a third preset time period based on the characteristic parameters. Various conventional power units generate power and operate to the corresponding second target power generation according to the corresponding characteristic parameters and the power generation weighting coefficient.

[0025] The beneficial effects of this invention are as follows: Based on the power consumption level in the area to be generated, different types of conventional power sources are coordinated and managed. While different types of conventional power sources complete the predetermined first target power generation, they can also uniformly schedule different types of conventional power sources in the remaining time (third preset time) according to the power generation characteristic parameters of various types of conventional power sources in the second preset time period. On the one hand, it can ensure the predetermined target power generation requirements of each conventional power source, and on the other hand, it can solve the power generation scheduling problem during peak electricity consumption periods. Attached Figure Description

[0026] Figure 1 This is a flowchart illustrating the power system control method based on conventional power supply configuration disclosed in Embodiment 1 of the present invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer and more explicit, the content of this invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to this invention are shown in the accompanying drawings, not all of them.

[0028] This embodiment proposes a power system control method based on conventional power supply configuration, such as... Figure 1 As shown, it includes the following steps:

[0029] S1, based on the power absorption level of the area to be generated within the first preset time period, calculate the total power generation of various conventional units in the area to be generated.

[0030] In S1, the first preset time period can be set according to the actual power generation demand in the area to be generated. Under normal power consumption levels, the first preset time period can be selected as needed, such as during peak electricity consumption periods in special seasons or on special dates, the corresponding peak electricity consumption periods can also be included.

[0031] Generally, since different power generation areas can be defined according to actual needs, these areas can contain various types of conventional power generating units. Each type of conventional power source can have multiple generator sets. Therefore, the power generation area mentioned in this embodiment cannot contain only one type of conventional power generating unit. In one example, the conventional power generating units include at least two of the following: coal-fired generator sets, gas-fired generator sets, nuclear power generator sets, and hydroelectric generator sets. For ease of explanation, in this embodiment, the various types of conventional power generating units can include coal-fired generator sets, gas-fired generator sets, nuclear power generator sets, and hydroelectric generator sets.

[0032] S2, obtain the first target power generation of various conventional units within the second preset time period.

[0033] In general, there will be multiple conventional power units of different types in the area to be generated, and users will also include different groups of electricity users such as residential electricity users and enterprise units. Therefore, it is inevitable that there will be peak electricity consumption periods and normal electricity consumption periods. In this embodiment, the second preset time period can be recorded as the normal electricity consumption period and the third preset time period can be recorded as the peak electricity consumption period (see S4 for details) to provide a detailed description of this embodiment.

[0034] In S2, the user needs to set a time period to obtain the first target power generation. This time period is defined as the second preset time period. The start and end points of this time period should be set with reference to the first preset time period mentioned above and the preset time period described below. The first target power generation corresponds to the set time period, that is, it corresponds to the second preset time period. By obtaining the first target power generation within the second preset time period, the power generation of the power consumption period can be obtained in advance, providing calculation labels for the subsequent S3.

[0035] S3. After all types of conventional power units reach the corresponding first target power generation within the second preset time period, obtain the average power generation efficiency, average power generation and emission indicators of all types of conventional power units within the second preset time period, and use the corresponding average power generation efficiency, average power generation and emission indicators as characteristic parameters of all types of conventional power units.

[0036] In S3, once all types of conventional power units reach their corresponding first target power generation within the second preset time period, it is considered that the power supply and load consumption of the corresponding conventional power units are balanced. Based on this, by using average power generation efficiency, average power generation, and emission indicators as characteristic parameters of various types of conventional power units, the power supply-consumption characteristics during subsequent peak electricity consumption periods can be characterized.

[0037] S4, based on the characteristic parameters, allocate the second target power generation and the corresponding power generation weight coefficient to various conventional power units within the third preset time period. Various conventional power units generate power and operate according to the corresponding characteristic parameters and power generation weight coefficient until the corresponding second target power generation is reached.

[0038] In S4, the product of the second target power generation and the corresponding power generation weight coefficient represents the power supply capacity of the corresponding conventional power source at the service level and during the service period. When various conventional power units generate power according to the corresponding characteristic parameters and power generation weight coefficient to the corresponding second target power generation, it means that the conventional power source can supply power normally at the service level and during the service period, thereby realizing power supply control during peak electricity consumption periods.

[0039] Therefore, in this embodiment, the starting point of the second preset time period is the same as the starting point of the first preset time period, the ending point of the second preset time period is the starting point of the third preset time period, the ending point of the third preset time period is the same as the ending point of the first preset time period, and the first preset time period is the sum of the second preset time period and the third preset time period.

[0040] It is understandable that, for the power generation coordination control strategy of conventional power units in the second preset time period, the average power generation efficiency, average power generation and emission indicators during the second preset time period (power consumption period) can be considered to characterize the power generation characteristics of the corresponding conventional power units. The power generation characteristics of each conventional power unit can be used to determine how to configure conventional power in the third preset time period (peak power consumption period). For conventional power units with strong power generation capacity, more power generation tasks can be assigned to them during peak power consumption period. Therefore, the second target power generation of conventional power units allocated in the third preset time period and the corresponding power generation weight coefficient are positively correlated.

[0041] Specifically, in S1, the total power generation of all types of conventional generating units within the power generation area is:

[0042] Q=Q1+Q2+Q3+Q4+a1Q′1+b1Q′2+c1Q′3+d1Q′4

[0043] In the formula, Q represents the total power generation of all types of conventional generating units, Q1 represents the first target power generation of coal-fired generating units in the second preset time period, Q2 represents the first target power generation of gas-fired generating units in the second preset time period, Q3 represents the first target power generation of nuclear power generating units in the second preset time period, Q4 represents the first target power generation of hydropower generating units in the second preset time period, Q'1 represents the second target power generation of coal-fired generating units in the third preset time period, Q'2 represents the second target power generation of gas-fired generating units in the third preset time period, Q'3 represents the second target power generation of nuclear power generating units in the third preset time period, Q'4 represents the second target power generation of hydropower generating units in the third preset time period, a1 represents the power generation weighting coefficient of coal-fired generating units in the third preset time period, b1 represents the power generation weighting coefficient of gas-fired generating units in the third preset time period, c1 represents the power generation weighting coefficient of nuclear power generating units in the third preset time period, and d1 represents the power generation weighting coefficient of hydropower generating units in the third preset time period.

[0044] Therefore, in this embodiment, during the third preset time period, the sum of the power generation weight coefficients allocated to various conventional power units is 1. During the second preset time period, if any conventional power unit has a first target power generation of zero, the power generation weight coefficient of the conventional power unit with a first target power generation of zero is set to zero, and the sum of the power generation weight coefficients allocated to the remaining conventional power units is set to 1.

[0045] For conventional power units, if the power consumption level and period are within a certain range, a corresponding power generation target value can be set for the conventional power unit. If the target value is reached, it is considered that the conventional power unit has the conditions to undertake more power generation tasks during peak power consumption periods. Otherwise, the conventional power unit does not have the conditions to undertake more power generation tasks during peak power consumption periods. Therefore, in this embodiment, if the first target power generation of the conventional power unit does not reach the target value within the second preset time period, the power generation weighting coefficient of the conventional power unit allocated to the third preset time period is at most 0.1.

[0046] The power system control method based on conventional power source configuration described above can coordinate and manage different types of conventional power sources based on the power absorption level in the area to be generated. While different types of conventional power sources complete the predetermined first target power generation, it can also uniformly schedule different types of conventional power sources in the remaining time (third preset time) according to the power generation characteristic parameters of various types of conventional power sources in the second preset time period. On the one hand, it can ensure the predetermined target power generation requirements of each conventional power source, and on the other hand, it can solve the power generation scheduling problem during peak electricity consumption periods.

[0047] Example 2

[0048] This embodiment proposes a power system control system based on conventional power supply configuration, including:

[0049] The first power generation acquisition unit is used to calculate the total power generation of various conventional units in the area to be generated based on the power absorption level of the area to be generated within the first preset time period.

[0050] The second power generation acquisition unit is used to acquire the first target power generation of various conventional generating units within a second preset time period.

[0051] The feature parameter acquisition unit acquires the average power generation efficiency, average power generation and emission index of various conventional power units within the second preset time period after all types of conventional power units have reached the corresponding first target power generation within the second preset time period, and uses the corresponding average power generation efficiency, average power generation and emission index as feature parameters of various conventional power units.

[0052] The conventional power configuration unit is used to allocate a second target power generation and a corresponding power generation weighting coefficient to various conventional power units within a third preset time period based on characteristic parameters. Various conventional power units generate power and operate to the corresponding second target power generation according to the corresponding characteristic parameters and power generation weighting coefficient.

[0053] In this embodiment, the functions of each unit correspond to S1-S4 in Embodiment 1, and will not be repeated here.

[0054] The above embodiments are merely illustrative of the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made based on the essence of the content of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A power system control method based on conventional power supply configuration, characterized in that, Includes the following steps: Based on the power absorption level of the area to be generated within the first preset time period, calculate the total power generation of various conventional power units in the area to be generated. Obtain the first target power generation of each type of conventional power unit within a second preset time period; Once all types of conventional power units reach the corresponding first target power generation within the second preset time period, the average power generation efficiency, average power generation, and emission index of all types of conventional power units within the second preset time period are obtained, and the corresponding average power generation efficiency, average power generation, and emission index are used as characteristic parameters of all types of conventional power units. Based on the characteristic parameters, the conventional power generation units of each type are allocated a second target power generation within a third preset time period and a corresponding power generation weight coefficient. The conventional power generation units of each type generate power and operate to the corresponding second target power generation according to the corresponding characteristic parameters and the power generation weight coefficient. The starting point of the second preset time period is the same as the starting point of the first preset time period, the ending point of the second preset time period is the starting point of the third preset time period, the ending point of the third preset time period is the same as the ending point of the first preset time period, and the first preset time period is the sum of the second preset time period and the third preset time period. During the third preset time period, the sum of the power generation weighting coefficients assigned to each type of conventional power unit is 1. If, during the second preset time period, the first target power generation of any of the conventional power units is zero, then the power generation weight coefficient of the conventional power unit with the first target power generation is set to zero, and the sum of the power generation weight coefficients allocated to the remaining conventional power units is set to 1. If the first target power generation of the conventional power unit does not reach the specified value within the second preset time period, the power generation weighting coefficient of the conventional power unit allocated within the third preset time period is at most 0.

1.

2. The power system control method based on conventional power supply configuration as described in claim 1, characterized in that, The conventional power units include at least two of the following: coal-fired power generation units, gas-fired power generation units, nuclear power generation units, and hydropower generation units.

3. The power system control method based on conventional power supply configuration as described in claim 2, characterized in that, The total power generation of all types of conventional power units within the power generation area is: In the formula, This represents the total power generation of all types of conventional power units. This represents the first target power generation of the coal-fired power generating unit within the second preset time period. The target power generation of the gas generator set within the second preset time period. The target power generation of the nuclear power generating unit within the second preset time period. The target power generation of the hydroelectric generator unit within the second preset time period. This refers to the second target power generation of the coal-fired power generating unit within the third preset time period. The second target power generation of the gas generator set within the third preset time period. This is the second target power generation of the nuclear power generating unit within the third preset time period. This refers to the second target power generation of the hydropower generator unit within the third preset time period. The weighting coefficient for the power generation of coal-fired power generating units during the third preset time period. This refers to the weighting coefficient of the power generation of the gas generator set during the third preset time period. This refers to the weighting coefficient for the power generation of nuclear power generating units during the third preset time period. This is the weighting coefficient for the power generation of the hydropower generator unit during the third preset time period.

4. The power system control method based on conventional power supply configuration as described in claim 1, characterized in that, The second target power generation of the conventional power unit allocated within the third preset time period is positively correlated with the corresponding power generation weighting coefficient.

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