Urban solid waste co-combustion power generation system

Abstract

The application discloses a kind of urban solid waste synergic incineration power generation system, and the present application relates to incineration power generation technical field, by constructing power generation association group, incinerator is associated with steam turbine generator unit, and forms incinerator sequence;In incinerator optimization module, system starts incineration with benchmark feeding rate, after hearth temperature reaches standard, gradually regulates and control incinerator feeding rate, determines optimal feeding rate interval according to power generation fluctuation curve;Synergic feedback adjustment module is based on this interval, in turn regulates and control the feeding rate of each incinerator in incinerator sequence, and real-time monitoring power generation and power, dynamically adjusts to meet preset power generation demand, while avoiding exceeding steam turbine generator unit rated power;If all incinerator feeding rate has reached the upper limit of optimal interval, power generation is still insufficient and power is not over limit, system will issue a notice, prompt control has reached maximum limit;Whole system aims at optimizing urban solid waste incineration power generation process, improves power generation efficiency and stability.

Description

Technical Field

[0001] This invention belongs to the field of incineration power generation technology, specifically, it relates to a co-incineration power generation system for urban solid waste. Background Technology

[0002] With the acceleration of global urbanization, the amount of urban solid waste emissions is also increasing, giving rise to waste-to-energy incineration systems, which provide support for urban resource recycling and environmental management.

[0003] Existing technologies for urban solid waste incineration power generation have several shortcomings. First, they lack automated design and rely heavily on manual control, resulting in poor coordination between the incinerator and generator unit, hindering efficient resource integration and impacting overall power generation efficiency. Second, existing technologies are not precise enough in incinerator operation control, often using manually set fixed feed rates that cannot be adjusted in real time based on furnace temperature and power generation, leading to insufficient energy utilization, large fluctuations in power generation, and difficulty in meeting stable power supply demands. Third, they lack effective feedback and adjustment mechanisms, making it difficult to adjust in time when power generation or output is abnormal, easily causing uncontrolled power generation or energy waste. In addition, existing technologies lack flexibility when multiple incinerators work together, making it difficult to dynamically adjust the feed rate range according to demand, and failing to optimize energy utilization while meeting power generation needs.

[0004] To address the aforementioned problems, this invention proposes a co-incineration power generation system for urban solid waste. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a co-incineration power generation system for urban solid waste, solving the problems of low power generation efficiency and poor power generation stability in existing technologies for urban solid waste incineration power generation.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A co-incineration power generation system for municipal solid waste, the system comprising:

[0008] The power generation association group construction module determines all the incinerators and their associated steam turbine generators in any target incineration power generation unit, arranges each incinerator, constructs an incinerator sequence, and combines it with the steam turbine generators associated with each incinerator to construct a target power generation association group.

[0009] The incinerator optimization module, when all incinerators in the target power generation associated group start incinerating municipal solid waste and the furnace temperature reaches the reference temperature, selects the target control incinerator based on the incinerator sequence to perform preliminary control, determines the optimal power generation processing characteristics, and further determines the optimal feed rate range in combination with the power generation of the steam turbine generator set.

[0010] The collaborative feedback control module, based on the determined optimal feed rate range, sequentially controls all incinerators in the incinerator sequence and monitors the power generation of the turbine generator set in real time. Based on the feedback results of power generation, it performs feedback control on the corresponding incinerators.

[0011] As a further aspect of the present invention, in the power generation association group construction module, the specific method for arranging each incinerator and constructing the incinerator sequence is as follows:

[0012] Obtain the target incineration generator set determined by the operator, and denote it as A;

[0013] Obtain all incinerators in the target incineration generator set A, and denote them as the incinerator sequence B={B1,B2,...,Bj} in the order of acquisition, where j is the total number of incinerators;

[0014] Label any incinerator in the incinerator sequence B as Bi, where i is the counting index, 1≤i≤j.

[0015] As a further aspect of the present invention, the specific method for constructing the target power generation association group in the power generation association group construction module is as follows:

[0016] Obtain the steam turbine generator set in the target incineration generator set A, denoted as C;

[0017] The incinerator sequence B is combined with the steam turbine generator set C, and denoted as the target power generation association group F[B,C].

[0018] As a further aspect of the present invention, the specific method by which the incinerator optimization module selects a target based on the incinerator sequence to perform preliminary control of the incinerator is as follows:

[0019] Obtain the incinerator sequence B in the target power generation association group F[B,C];

[0020] When the target power generation associated group F[B,C] generates electricity, the municipal solid waste is incinerated at the preset reference feed rate v_min as the feed rate of the j incinerators, and the furnace temperature of the j incinerators is monitored in real time.

[0021] When the furnace temperature of all j incinerators reaches the reference temperature, preliminary control is performed.

[0022] As a further aspect of the present invention, the specific method of selecting a target and controlling the incinerator to perform preliminary control based on the incinerator sequence in the incinerator optimization module further includes:

[0023] Get the current time, denoted as t1;

[0024] The power generation of steam turbine generator set C at time t1 is obtained in real time using a smart meter associated with steam turbine generator set C, and denoted as p1.

[0025] Extract any one incinerator Bi from incinerator sequence B as the target controlled incinerator;

[0026] The feed rate of the incinerator Bi is denoted as V_Bi, and at time t1, V_Bi = v_min;

[0027] The feed rate V_Bi of the incinerator Bi is controlled based on the reference feed rate v_min and increases monotonically until the feed rate V_Bi reaches the preset maximum feed rate v_max, where the monotonically increasing rate is a preset value.

[0028] Determine the total number of time intervals from the reference feed rate v_min to the maximum feed rate v_max, denoted as m, and construct the time sequence t1, t2, ..., tm;

[0029] Determine the feed rate V_Bi corresponding to each time step in the time sequence t1, t2, ..., tm of the incinerator Bi, and construct the feed rate sequence V1_Bi, V2_Bi, ..., Vm_Bi, where V1_Bi = v_min and Vm_Bi = v_max;

[0030] The power generation of turbine generator set C at each time moment is determined based on the smart meter, and the power generation sequence p1, p2, ..., pm is constructed in time order, where pn corresponds to tn, n is the counting index, and 1≤n≤m.

[0031] As a further aspect of the present invention, the specific method for determining the optimal power generation processing characteristics in the incinerator optimization module is as follows:

[0032] Obtain the power generation sequence p1, p2, ..., pm, the feed rate sequence V1_Bi, V2_Bi, ..., Vm_Bi, and the time sequence t1, t2, ..., tm;

[0033] Construct a two-dimensional coordinate system with time as the horizontal axis and power generation as the vertical axis;

[0034] The power generation sequence p1, p2, ..., pm is plotted in a two-dimensional coordinate system in the form of data points according to the time sequence, resulting in m data points. A curve is obtained by fitting the curve, which is denoted as the power generation fluctuation curve S_Bi.

[0035] Determine the first time point t1 on the horizontal axis, and construct a straight line perpendicular to the horizontal axis and parallel to the vertical axis through time point t1. Denote this as the first time point line L1.

[0036] The first timeline L1 simultaneously crosses the horizontal axis and the power generation fluctuation curve S_Bi;

[0037] Taking time t1 as the first time point, extend k consecutive times in the positive direction of the horizontal axis, and construct a straight line perpendicular to the horizontal axis and parallel to the vertical axis after passing through the last time point of the extension. This line is called the second time point line L2, where k is a preset integer and k > 0.

[0038] Obtain the time interval formed by the first time line L1 and the second time line L2, and denote it as the first time interval FM1;

[0039] Repeat the above steps to construct a timeline and determine time intervals until time tm.

[0040] Obtain the total number of time intervals, denoted as o. Denote the o time intervals in time order as the time interval sequence FM1, FM2, ..., FMo. The first time interval FM1 is composed of the first time line L1 and the second time line L2, the second time interval FM2 is composed of the second time line L2 and the third time line L3, and so on.

[0041] Take any time interval FMu from the time interval sequence, where u is the counting index, 1≤u≤o;

[0042] The area value of the closed region formed by the two time lines associated with the time interval FMu, the horizontal axis, and the power generation fluctuation curve S_Bi is denoted as the power generation processing feature FZu associated with the time interval FMu.

[0043] Similarly, determine the power generation processing characteristics associated with the remaining time intervals, and construct the power generation processing characteristic sequence FZ1, FZ2, ..., FZo in time order;

[0044] The power generation processing feature FZu with the largest value in the power generation processing feature sequence is marked as the optimal power generation processing feature.

[0045] As a further aspect of the present invention, the specific method for determining the optimal feed rate range in the incinerator optimization module, in conjunction with the power generation of the steam turbine generator set, is as follows:

[0046] Take the time interval FMu where the optimal power generation processing characteristic is located, determine the feed rate of the incinerator Bi in the time interval FMu, and form the feed rate interval [Vmin_Bi, Vmax_Bi].

[0047] [Vmin_Bi,Vmax_Bi]∈V1_Bi,V2_Bi,...,Vm_Bi;

[0048] Identify the portion of the power generation fluctuation curve S_Bi within the time interval FMu where the slope is greater than 0, extract the time interval corresponding to this portion, and mark it as the time interval FMu';

[0049] The feed rate interval [Vmin_Bi, Vmax_Bi] is truncated according to the time interval FMu' to obtain the optimal feed rate interval [Vmin_Bi', Vmax_Bi'].

[0050] As a further aspect of the present invention, the specific method by which the coordinated feedback adjustment module sequentially adjusts all incinerators in the incinerator sequence and performs feedback adjustment on the corresponding incinerators based on the feedback results of power generation is as follows:

[0051] Obtain the first incinerator B1 in the incinerator sequence B={B1,B2,...,Bj};

[0052] The feed rate of incinerator B1 is adjusted to the minimum value Vmin_Bi' in the optimal feed rate range [Vmin_Bi', Vmax_Bi'], and the power generation p and power output P of turbine generator set C are obtained in real time.

[0053] If the power generation p is greater than or equal to the preset power generation demand, control will be stopped.

[0054] Conversely, repeat the above steps, adjusting the feed rate of the subsequent incinerators in turn, until the power generation p is greater than or equal to the preset power generation demand, then stop adjusting.

[0055] As a further aspect of the present invention, in the collaborative feedback regulation module, during the regulation process, if the power generation P of the steam turbine generator set C is greater than or equal to the rated power generation Pe of the steam turbine generator set C, the regulation is stopped.

[0056] As a further aspect of the present invention, in the collaborative feedback adjustment module, during the adjustment process, when the feed rate of all incinerators in the incinerator sequence is adjusted to Vmin_Bi', and the power generation p < the preset demand power generation and the power generation P < the rated power generation Pe, the feed rate of each incinerator is adjusted sequentially, increasing from Vmin_Bi' to Vmax_Bi', until the power generation p ≥ the preset demand power generation or the power generation P ≥ the rated power generation Pe, and the adjustment is stopped, wherein the increasing rate is a preset value;

[0057] When the feed rate of all incinerators is adjusted to Vmax_Bi', and the power generation p < the required power generation and the power generation P < the rated power generation Pe, a notification message is issued to the operators to inform them that the control has reached its maximum limit.

[0058] The beneficial effects of this invention are:

[0059] (1) This invention organizes the collaborative relationship between the incinerator and the steam turbine generator set through the power generation association group construction module, forming a target power generation association group, which ensures the overall management of multiple incinerators and lays the foundation for efficient operation; the incinerator optimization module performs preliminary regulation after the furnace temperature reaches the standard, determines the optimal power generation processing characteristics and feed rate range, significantly improves power generation efficiency and energy recovery rate, and reduces energy waste in the waste treatment process; the collaborative feedback adjustment module dynamically regulates the incinerator sequence based on the optimal range and monitors the power generation in real time for feedback adjustment, which enhances the stability and adaptability of the system, avoids operational fluctuations, realizes automated feedback control, improves power generation and energy utilization rate, reduces manual intervention costs, and improves the sustainability and economy of urban solid waste treatment;

[0060] (2) This invention monitors the furnace temperature and feed rate of the incinerator sequence in real time and starts with a benchmark feed rate to ensure stable initialization of the incineration process and avoid initial operational fluctuations. Subsequently, the feed rate of the target incinerator is monotonically increased and controlled, and combined with the power generation sequence analysis, a power generation fluctuation curve is constructed to identify the optimal power generation processing characteristics and the optimal feed rate range. Data-driven decision-making maximizes energy output, enhances the system's adaptability, and reduces operating costs. At the same time, by precisely controlling the feed rate, the waste incineration process is optimized, the energy recovery rate is improved, and the system is ensured to operate continuously in the best condition, achieving a dual improvement in economic and environmental benefits.

[0061] (3) This invention starts by regulating the incinerator sequence based on the minimum value of the optimal feed rate range, and gradually adjusts the incinerator sequence to ensure that the power generation meets the preset requirements. At the same time, it automatically stops when the power generation reaches the rated value, effectively preventing equipment overload and improving system safety and stability. In addition, when the minimum regulation is insufficient, the system can flexibly increase the feed rate to maximize resource utilization. When the limit is reached but the requirements are still not met, the operator is notified in time to avoid blind operation and improve response efficiency. While optimizing energy utilization efficiency, it reduces energy waste and ultimately ensures the stable operation and economic benefits of the power generation process. Attached Figure Description

[0062] The invention will now be further described with reference to the accompanying drawings.

[0063] Figure 1 This is a schematic diagram of the system described in this invention;

[0064] Figure 2 This is a flowchart illustrating the method described in Embodiment 3 of the present invention;

[0065] Figure 3 This is a flowchart illustrating the method described in Embodiment 3 of the present invention. Detailed Implementation

[0066] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0067] Example 1

[0068] A co-incineration power generation system for urban solid waste, such as Figure 1 As shown, this system includes the following:

[0069] This system is a co-incineration power generation system for urban solid waste. It is an intelligent urban solid waste incineration power generation solution based on data-driven and collaborative optimization. It breaks the isolated operation mode of each incinerator in traditional incineration power generation, which is "each fighting its own battle". By establishing a target power generation correlation group between the incinerator and the steam turbine generator set, and introducing a feedforward-feedback composite control strategy, it realizes global and real-time optimization of the entire power generation system. The ultimate goal is to maximize the total power generation efficiency and economic benefits of the system while ensuring stable and environmentally friendly operation.

[0070] It should be noted that in this plan, municipal solid waste needs to be pre-treated, including conventional fermentation, drying, and crushing. In addition, the municipal solid waste described in this plan needs to undergo further fine crushing, mixing, and die casting on the basis of preliminary crushing, in order to ensure that the difference in calorific value between municipal solid wastes in the same batch is minimized and to prevent it from affecting the plan.

[0071] This solution mainly includes the following modules: power generation association group construction module, incinerator optimization module, and collaborative feedback regulation module;

[0072] In the power generation association group construction module, firstly, based on the physical pipeline design in the incineration power plant, the incinerators associated with any steam turbine generator set are determined (based on the characteristics of most incineration power plants, the relationship between incinerators and steam turbine generator sets is many-to-one, that is, multiple incinerators correspond to the same steam turbine generator set). The incinerators are arranged to construct an incinerator sequence, and combined with the steam turbine generator sets associated with each incinerator to construct the target power generation association group, forming an "incinerator-steam turbine generator set" topology network in this incineration power plant, which is equivalent to a virtual power plant unit. A waste-to-energy plant can include one or more such virtual power plant units.

[0073] In the incinerator optimization module, when all incinerators in the target power generation associated group start incinerating municipal solid waste and the furnace temperature reaches the reference temperature, the target control incinerator is selected based on the incinerator sequence to perform preliminary control, determine the optimal power generation processing characteristics, and further determine the optimal feed rate range in combination with the power generation of the steam turbine generator set. Specifically, the reference temperature represents the minimum safe temperature for complete combustion of waste and efficient decomposition of dioxins. In practice, it is generally taken as above 850°C and held for 2 seconds. In this scheme, 880°C is used to ensure the environmental bottom line.

[0074] Next, any one incinerator is selected as the target incinerator for initial control. The feed rate of the incinerator is controlled using the gradient ascent method to determine the optimal power generation characteristics. The optimal feed rate range is further determined by combining the power generation of the steam turbine generator set. It should be noted that since the municipal solid waste burned in each incinerator is from the same batch, any one incinerator can be directly selected for testing and control. In addition, all incinerators must be of the same specification.

[0075] When adjusting the feed rate of the incinerator, all other relevant parameters of the incinerator are adaptively adjusted by the operator.

[0076] In the aforementioned collaborative feedback adjustment module, based on the determined optimal feed rate range, all incinerators in the incinerator sequence are sequentially adjusted, and the power generation of the turbine generator set is monitored in real time. Based on the feedback results of power generation, the corresponding incinerators are adjusted accordingly. Specifically, after finding the optimal range, the feed rate of other incinerators in the incinerator sequence is gradually adjusted to that optimal range to avoid drastic fluctuations in the turbine generator set caused by simultaneous adjustment of all furnaces, which would affect turbine safety and power generation stability, thus embodying the concept of "order" in collaboration.

[0077] Secondly, real-time monitoring of the power generation and rated power of the steam turbine generator set is used as a feedback signal to control the incinerator, ultimately maximizing economic efficiency while ensuring safety.

[0078] If any abnormal situation occurs during the above control process, or if the control cannot meet the requirements, the sound and light alarm device integrated into this system will send a notification to the operator.

[0079] Example 2

[0080] This embodiment, based on Embodiment 1, further discloses a method for constructing an incinerator sequence and a target power generation association group in the power generation association group construction module, specifically including the following:

[0081] Based on the content described in Example 1, a target incineration generator set determined by the operator is first obtained and denoted as A, i.e., target incineration generator set A.

[0082] Next, all incinerators in the target incineration generator set A are obtained, and based on the order in which the incinerators are obtained, they are recorded as an incinerator sequence, represented as: B={B1,B2,...,Bj}, where j is the total number of incinerators.

[0083] Take any one incinerator from the determined incinerator sequence B={B1,B2,...,Bj} and label it as Bi, where i is the counting index, and the value range is from 1 to j.

[0084] As described in Example 1, the incinerator and the turbine generator set in the target incineration generator set A have a many-to-one relationship. Therefore, the turbine generator set associated with the incinerator sequence B={B1,B2,...,Bj} is obtained and denoted as C, i.e., turbine generator set C.

[0085] The incinerator sequence B={B1,B2,...,Bj} determined above is combined with the steam turbine generator set C, and the combined result is recorded as the target power generation association group, denoted as F[B,C], where B represents the incinerator sequence B={B1,B2,...,Bj} and C represents the steam turbine generator set C.

[0086] Example 3

[0087] This embodiment, based on embodiment 2, further discloses a method for determining the optimal feed rate range of the incinerator in the incinerator optimization module, such as... Figure 2 As shown, it specifically includes the following:

[0088] Based on the content described in Example 2, the target power generation association group F[B,C] is obtained, that is, the incinerator sequence B={B1,B2,...,Bj} and the steam turbine generator set C;

[0089] First, select a target incinerator from the incinerator sequence and perform preliminary control on it, as follows:

[0090] Real-time monitoring of all incinerators in the incinerator sequence B={B1,B2,...,Bj}; when the target power generation associated group F[B,C] needs to perform power generation operation, the baseline feed rate v_min preset by the operator based on the actual situation is obtained.

[0091] Using the baseline feed rate v_min as the feed rate of j incinerators in the incinerator sequence B={B1,B2,...,Bj}, the incineration of municipal solid waste begins. Furthermore, the furnace temperature of all incinerators is monitored in real time. If the furnace temperature of all j incinerators reaches the baseline temperature (880℃), the initial control operation is initiated.

[0092] First, obtain the time when the furnace temperature of j incinerators reaches the reference temperature and record it as t1;

[0093] At time t1, the power generation of turbine generator set C is obtained in real time using the smart meter associated with the turbine generator set C, and recorded as p1. The power generation p1 corresponds to the current time t1. It should be explained that the power generation p1 of turbine generator set C at the current time refers to the power generation at this moment. For example, if the power generation recorded at the end of the previous moment was 1000 kWh, and the power generation recorded at the end of this moment is 1010 kWh, then the power generation at this moment p1 = 1010 kWh - 1000 kWh = 10 kWh.

[0094] Obtain any one incinerator Bi from the incinerator sequence B={B1,B2,...,Bj}, and use incinerator Bi as the target incinerator for preliminary control.

[0095] The feed rate of the incinerator Bi at the current moment is marked as V_Bi, and the feed rate V_Bi is equal to the reference feed rate v_min.

[0096] Next, the feed rate V_Bi of the incinerator Bi is initially adjusted in a monotonically increasing manner. The rate of increase is determined by the operator based on the actual situation. The monotonically increasing stops when the feed rate V_Bi of the incinerator Bi reaches the maximum feed rate v_max preset by the operator.

[0097] Then, the total number of time intervals during which the feed rate V_Bi increases monotonically from the base feed rate v_min to the maximum feed rate v_max is obtained and recorded as m. The total number of time intervals m is affected by the increment rate preset by the operator. The larger the increment rate, the smaller the total number of time intervals m, and vice versa.

[0098] The acquired m time points are represented as a time sequence: t1, t2, ..., tm, including the current time t1;

[0099] Obtain the value of the feed rate V_Bi of the incinerator Bi at each time point in the time sequence t1, t2, ..., tm, for a total of m feed rates. Sort the m feed rates according to the time sequence t1, t2, ..., tm to obtain the feed rate sequence, represented as: V1_Bi, V2_Bi, ..., Vm_Bi, where the first feed rate V1_Bi is equal to the base feed rate v_min, and the last feed rate Vm_Bi is equal to the maximum feed rate v_max.

[0100] The power generation associated with each time step in the time sequence t1, t2, ..., tm is obtained and sorted according to the order of the time sequence t1, t2, ..., tm to obtain the power generation sequence, represented as p1, p2, ..., pm. At this time, the feed rate of all incinerators except incinerator Bi is the reference feed rate v_min. Therefore, the influence of other incinerators on the turbine generator set C can be regarded as constant. The change in the power generation of turbine generator set C comes from the preliminary adjustment of the feed rate of incinerator Bi.

[0101] In the power generation sequence p1, p2, ..., pm, pn corresponds to tn, where n is the counting index, and its value ranges from 1 to m.

[0102] Thus, the power generation sequence p1, p2, ..., pm, the feed rate sequence V1_Bi, V2_Bi, ..., Vm_Bi, and the time sequence t1, t2, ..., tm were determined. Based on these three sequences, the optimal power generation processing characteristics were determined as follows:

[0103] Construct a two-dimensional coordinate system, where the horizontal axis of the two-dimensional coordinate system is the time line (time), and the vertical axis is the power generation of the steam turbine generator set C;

[0104] The power generation sequence p1, p2, ..., pm is plotted sequentially in the form of data points in the constructed two-dimensional coordinate system according to the time sequence. This yields m data points corresponding to the m power generation in the power generation sequence p1, p2, ..., pm. By fitting the m data points with a curve, a curve is obtained, which is denoted as the power generation fluctuation curve S_Bi, representing the power generation fluctuation curve associated with the operation of controlling the incinerator Bi.

[0105] Next, obtain the first time t1 on the horizontal axis of the constructed two-dimensional coordinate system. Construct a straight line perpendicular to the horizontal axis and parallel to the vertical axis after time t1, and denote it as the first time line L1. It should be noted that the first time line L1 passes through both the horizontal axis and the power generation fluctuation curve S_Bi.

[0106] Taking time t1 as the first time point, extend k consecutive times in the positive direction of the horizontal axis (including the first time point t1), and obtain the last time point after the extension (here, the kth time point). After this last time point, construct a straight line perpendicular to the horizontal axis and parallel to the vertical axis, and denote it as the second time point line L2, where k is an integer preset by the operator based on the actual situation, and k > 0.

[0107] Determine the time interval formed between the first time line L1 and the second time line L2 on the horizontal axis, and denote it as the first time interval FM1.

[0108] Next, obtain the last time of the first time interval FM1, continue the operation of extending k time intervals, and determine a new time interval until the extension reaches the last time tm on the horizontal axis, then stop the extension operation;

[0109] The total number of time intervals on the horizontal axis is counted and denoted as o. Then, the o time intervals are denoted as time interval sequence according to time order, represented as FM1, FM2, ..., FMo. As mentioned above, the first time interval FM1 is composed of the first time line L1 and the second time line L2, the second time interval FM2 is composed of the second time line L2 and the third time line L3, and so on.

[0110] Obtain any time interval FMu from the determined time interval sequence FM1,FM2,...,FMo, where u is the counting index, with a value ranging from 1 to 0.

[0111] Obtain the two time lines associated with the time interval FMu. At this time, these two time lines will form a closed region with the horizontal axis and the power generation fluctuation curve S_Bi. Calculate the area of ​​this closed region and record the calculated value as the power generation processing feature associated with the time interval FMu, labeled as FZu.

[0112] Repeat the above steps to determine the power generation processing characteristics associated with each time interval in the time interval sequence FM1, FM2, ..., FMo, and sort them according to the order of the time interval sequence FM1, FM2, ..., FMo to obtain the power generation processing characteristic sequence, denoted as: FZ1, FZ2, ..., FZo.

[0113] Extract the power generation processing feature FZu with the largest value from the determined power generation processing feature sequence FZ1, FZ2, ..., FZo, and mark this power generation processing feature FZu as the optimal power generation processing feature.

[0114] Next, the time interval FMu in which this optimal power generation processing characteristic is located is obtained, and then the feed rate interval of the incinerator Bi in the time interval FMu is obtained by combining the feed rate sequence V1_Bi,V2_Bi,...,Vm_Bi, and labeled as [Vmin_Bi,Vmax_Bi], where [Vmin_Bi,Vmax_Bi]∈V1_Bi,V2_Bi,...,Vm_Bi.

[0115] Next, in the constructed two-dimensional coordinate system, determine the part of the power generation fluctuation curve S_Bi within the time interval FMu, and further determine the time interval corresponding to the part with a slope greater than 0 in this part, and denote this time interval as time interval FMu'. It should be noted that if the slope of the part of the power generation fluctuation curve S_Bi within the time interval FMu is greater than 0, then the time interval FMu' is equal to the time interval FMu.

[0116] Next, determine the feed rate interval [Vmin_Bi, Vmax_Bi] of the incinerator Bi. At this time, the corresponding time interval FMu is determined. Then, the part corresponding to the time interval FMu' is determined from the time interval FMu, and this part is truncated. The feed rate interval obtained after truncation is marked as the optimal feed rate interval [Vmin_Bi', Vmax_Bi'].

[0117] Example 4

[0118] This embodiment, based on embodiment 3, further discloses a method for sequentially regulating all incinerators in the incinerator sequence within the collaborative feedback regulation module, and for performing feedback regulation on the corresponding incinerators based on the feedback results of power generation. Figure 3 As shown, it specifically includes the following:

[0119] Once the optimal feed rate range [Vmin_Bi', Vmax_Bi'] is determined, all incinerators in the incinerator sequence can be controlled sequentially.

[0120] First, based on the target power generation association group F[B,C], the incinerator sequence B={B1,B2,...,Bj} is determined. The first incinerator B1 in the incinerator sequence B={B1,B2,...,Bj} is obtained, and the feed rate of the first incinerator B1 is regulated. The feed rate of incinerator B1 is regulated to the minimum value Vmin_Bi' in the optimal feed rate interval [Vmin_Bi',Vmax_Bi'] (incrementing to Vmin_Bi', the increment rate is determined by the operator). During this regulation process, the power generation p and power output P of the turbine generator set C are monitored in real time. If, at any moment during this regulation process, the power generation p of the turbine generator set C satisfies the condition that the power generation p is greater than or equal to the preset demand power generation, the regulation operation is stopped, indicating that the regulation operation has met the target.

[0121] Conversely, if the following conditions are not met, the subsequent incinerators, namely incinerators B2, B3, ..., Bj, are obtained, and the above steps are repeated to regulate the feed rate of the subsequent incinerators until the power generation p of the turbine generator set C is greater than or equal to the preset power generation demand, at which point the regulation operation is stopped.

[0122] It should be noted that during the control operation, if at any moment the power generation P of the turbine generator set C is greater than or equal to the rated power generation Pe of the turbine generator set C, the control operation shall be stopped immediately, and the operator shall be notified to manually control the turbine generator set C through an audible and visual alarm device.

[0123] If, during the control operation, the feed rate of all incinerators in the incinerator sequence B={B1,B2,...,Bj} is adjusted to the minimum value in the optimal feed rate range [Vmin_Bi',Vmax_Bi'], and the power generation p is less than the preset demand power generation, and the power generation P is less than the rated power generation Pe of the turbine generator set C, then the feed rate of all incinerators in the incinerator sequence B={B1,B2,...,Bj} is sequentially adjusted, monotonically increasing from Vmin_Bi' to Vmax_Bi' (the rate of increase is determined by the operator based on the actual situation), until the power generation p of the turbine generator set C satisfies either: the power generation p is greater than or equal to the preset demand power generation or the power generation P is greater than or equal to the rated power generation Pe of the turbine generator set C, at which point the control is stopped.

[0124] If the feed rate of all incinerators is adjusted to the maximum value in the optimal feed rate range [Vmin_Bi', Vmax_Bi'], and the power generation p of turbine generator set C is less than the preset demand power generation, and the power generation P of turbine generator set C is less than the rated power generation Pe of turbine generator set C, a notification message will be issued through the audible and visual alarm device to notify the operator that the adjustment has reached the maximum limit and cannot be adjusted further, and manual adjustment by the operator is required.

[0125] All data in the formulas described above are numerical calculations performed with dimensions removed. Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0126] The above description is merely an example and illustration of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

[0127] It should be stated that all user data collected in this application was collected with the user's consent and authorization. Furthermore, the uses of user data are legal and compliant, and the use and processing of user data comply with the relevant laws, regulations, and standards of the relevant regions.

Claims

1. A co-incineration power generation system for urban solid waste, characterized in that, The system includes: The power generation association group construction module determines all the incinerators and their associated steam turbine generators in any target incineration power generation group A, arranges each incinerator, constructs the incinerator sequence B={B1,B2,...,Bj}, and combines it with the steam turbine generators associated with each incinerator to construct the target power generation association group F[B,C], where C is the steam turbine generator in the target incineration power generation group A; The incinerator optimization module, when all incinerators in the target power generation associated group begin incinerating municipal solid waste and the furnace temperature reaches the reference temperature, selects the target incinerator based on the incinerator sequence to perform preliminary control in the following manner: Get the current time, denoted as t1; The power generation of steam turbine generator set C at time t1 is obtained in real time using a smart meter associated with steam turbine generator set C, and denoted as p1. Extract any one incinerator Bi from incinerator sequence B as the target controlled incinerator; The feed rate of the incinerator Bi is denoted as V_Bi, and at time t1, V_Bi = v_min; The feed rate V_Bi of the incinerator Bi is controlled based on the reference feed rate v_min and increases monotonically until the feed rate V_Bi reaches the preset maximum feed rate v_max, where the monotonically increasing rate is a preset value. Determine the total number of time intervals from the reference feed rate v_min to the maximum feed rate v_max, denoted as m, and construct the time sequence t1, t2, ..., tm; Determine the feed rate V_Bi corresponding to each time step in the time sequence t1, t2, ..., tm of the incinerator Bi, and construct the feed rate sequence V1_Bi, V2_Bi, ..., Vm_Bi, where V1_Bi = v_min and Vm_Bi = v_max; The power generation of turbine generator set C at each time moment is determined based on the smart meter, and the power generation sequence p1, p2, ..., pm is constructed in time order, where pn corresponds to tn, n is the counting index, and 1≤n≤m; The specific method for determining the optimal power generation processing characteristics is as follows: Obtain the power generation sequence p1, p2, ..., pm, the feed rate sequence V1_Bi, V2_Bi, ..., Vm_Bi, and the time sequence t1, t2, ..., tm; Construct a two-dimensional coordinate system with time as the horizontal axis and power generation as the vertical axis; The power generation sequence p1, p2, ..., pm is plotted in a two-dimensional coordinate system in the form of data points according to the time sequence, resulting in m data points. A curve is obtained by fitting the curve, which is denoted as the power generation fluctuation curve S_Bi. Determine the first time point t1 on the horizontal axis, and construct a straight line perpendicular to the horizontal axis and parallel to the vertical axis through time point t1. Denote this as the first time point line L1. The first timeline L1 simultaneously crosses the horizontal axis and the power generation fluctuation curve S_Bi; Taking time t1 as the first time point, extend k consecutive times in the positive direction of the horizontal axis, and construct a straight line perpendicular to the horizontal axis and parallel to the vertical axis after passing through the last time point of the extension. This line is called the second time point line L2, where k is a preset integer and k > 0. Obtain the time interval formed by the first time line L1 and the second time line L2, and denote it as the first time interval FM1; Repeat the above steps to construct a timeline and determine time intervals until time tm. Obtain the total number of time intervals, denoted as o. Denote the o time intervals in time order as the time interval sequence FM1, FM2, ..., FMo. The first time interval FM1 is composed of the first time line L1 and the second time line L2, the second time interval FM2 is composed of the second time line L2 and the third time line L3, and so on. Take any time interval FMu from the time interval sequence, where u is the counting index, 1≤u≤o; The area value of the closed region formed by the two time lines associated with the time interval FMu, the horizontal axis, and the power generation fluctuation curve S_Bi is denoted as the power generation processing feature FZu associated with the time interval FMu. Similarly, determine the power generation processing characteristics associated with the remaining time intervals, and construct the power generation processing characteristic sequence FZ1, FZ2, ..., FZo in time order; The power generation processing feature FZu with the largest value in the power generation processing feature sequence is marked as the optimal power generation processing feature; The specific method for further determining the optimal feed rate range based on the power generation of the steam turbine generator set is as follows: Take the time interval FMu where the optimal power generation processing characteristic is located, determine the feed rate of the incinerator Bi in the time interval FMu, and form the feed rate interval [Vmin_Bi, Vmax_Bi]. [Vmin_Bi,Vmax_Bi]∈V1_Bi,V2_Bi,...,Vm_Bi; Identify the portion of the power generation fluctuation curve S_Bi within the time interval FMu where the slope is greater than 0, extract the time interval corresponding to this portion, and mark it as the time interval FMu'; The feed rate interval [Vmin_Bi, Vmax_Bi] is truncated according to the time interval FMu' to obtain the optimal feed rate interval [Vmin_Bi', Vmax_Bi']. The collaborative feedback control module, based on the determined optimal feed rate range, sequentially controls all incinerators in the incinerator sequence and monitors the power generation of the turbine generator set in real time. Based on the feedback results of power generation, it performs feedback control on the corresponding incinerators.

2. The system according to claim 1, characterized in that, In the power generation association group construction module, the specific method for arranging each incinerator and constructing the incinerator sequence is as follows: Obtain the target incineration generator set determined by the operator, and denote it as A; Obtain all incinerators in the target incineration generator set A, and denote them as the incinerator sequence B={B1,B2,...,Bj} in the order of acquisition; Label any incinerator in the incinerator sequence B as Bi, where i is the counting index, 1≤i≤j.

3. The system according to claim 2, characterized in that, The specific method for constructing the target power generation association group in the power generation association group construction module is as follows: Obtain the steam turbine generator set C in the target incineration generator set A; The incinerator sequence B is combined with the steam turbine generator set C, and denoted as the target power generation association group F[B,C].

4. The system according to claim 3, characterized in that, In the incinerator optimization module, the specific methods for selecting a target and controlling the incinerator based on the incinerator sequence to perform preliminary control include: Obtain the incinerator sequence B in the target power generation association group F[B,C]; When the target power generation associated group F[B,C] generates electricity, the municipal solid waste is incinerated at the preset reference feed rate v_min as the feed rate of the j incinerators, and the furnace temperature of the j incinerators is monitored in real time. When the furnace temperature of all j incinerators reaches the reference temperature, preliminary control is performed.

5. The system according to claim 4, characterized in that, In the aforementioned collaborative feedback control module, the specific method for sequentially controlling all incinerators in the incinerator sequence and adjusting the corresponding incinerators based on the feedback results of power generation is as follows: Obtain the first incinerator B1 in the incinerator sequence B={B1,B2,...,Bj}; The feed rate of incinerator B1 is adjusted to the minimum value Vmin_Bi' in the optimal feed rate range [Vmin_Bi', Vmax_Bi'], and the power generation p and power output P of turbine generator set C are obtained in real time. If the power generation p is greater than or equal to the preset power generation demand, control will be stopped. Conversely, repeat the above steps, adjusting the feed rate of the subsequent incinerators sequentially until the power generation p is greater than or equal to the preset power generation demand, then stop adjusting.

6. The system according to claim 5, characterized in that, In the collaborative feedback regulation module, during the regulation process, if the power generation P of the steam turbine generator set C is greater than or equal to the rated power generation Pe of the steam turbine generator set C, the regulation is stopped.

7. The system according to claim 6, characterized in that, In the aforementioned collaborative feedback adjustment module, during the adjustment process, when the feed rate of all incinerators in the incinerator sequence is adjusted to Vmin_Bi', and the power generation p < the preset demand power generation and the power generation P < the rated power generation Pe, the feed rate of each incinerator is adjusted sequentially, increasing from Vmin_Bi' to Vmax_Bi', until the power generation p ≥ the preset demand power generation or the power generation P ≥ the rated power generation Pe, and the adjustment stops. The increasing rate is a preset value. When the feed rate of all incinerators is adjusted to Vmax_Bi', and the power generation p < the required power generation and the power generation P < the rated power generation Pe, a notification message is issued to the operators to inform them that the control has reached its maximum limit.

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