CN115001392A - Direct-supply mixed-network type solar hybrid power supply method - Google Patents
Direct-supply mixed-network type solar hybrid power supply method Download PDFInfo
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Abstract
本发明涉及太阳能供电技术领域，具体涉及一种直供混网式太阳能混合供电方法，包括测试并记录被测太阳能电池组件的初始数据；储存不同纬度不同时刻的太阳照射角度并进行实时记录；当检测到太阳能内部某一干扰信号导致供电内网压力值变化时，压力测量仪表实时检测并把信号传至控制核心；比较干扰信号与给定信号，根据比较结果调整变频器工作状态；对每个供电站选定模糊控制周期T，根据标准供电曲线确定供电给定值；根据模块程序偏差值计算供电输出的隶属补偿，切换供电模式；调节信号控制调节阀，输出太阳能供电流量；本发明解决了现有的直供混输式由于工艺复杂、全面的自动控制很难实现的问题。
The invention relates to the technical field of solar power supply, in particular to a direct-supply hybrid-grid solar hybrid power supply method, which includes testing and recording initial data of a solar cell module to be tested; storing and recording the sun irradiation angles at different latitudes and different moments in real time; When it is detected that a certain interference signal inside the solar energy causes the pressure value of the power supply network to change, the pressure measuring instrument detects in real time and transmits the signal to the control core; compares the interference signal with the given signal, and adjusts the working state of the inverter according to the comparison result; The power supply station selects the fuzzy control period T, and determines the power supply given value according to the standard power supply curve; calculates the subordination compensation of the power supply output according to the module program deviation value, and switches the power supply mode; adjusts the signal to control the regulating valve, and outputs the solar power supply flow; the invention solves the problem of The existing direct supply and mixed transmission type is difficult to realize due to the complex process and comprehensive automatic control.
Description
技术领域technical field
本发明涉及太阳能供电技术领域，具体涉及一种直供混网式太阳能混合供电方法。The invention relates to the technical field of solar power supply, in particular to a direct-supply hybrid-grid solar hybrid power supply method.
背景技术Background technique
一般在太阳能发电(PV'photovoltaic，光伏)系统中，会设置容量大于电力调节器(PCS、power condit1ning system，电力调节系统)的额定容量的PV模块。PV模块的发电量超过PCS的额定容量时，要将PCS的输出限制在额定容量以下。另一方面，为了控制被称为百万瓦级太阳能的数百万瓦至数千万瓦的大容量PV系统，有时会导入主站点控制器(MSC、main site controller) JSC除了对百万瓦级太阳能内的多个PCS进行集中监视以外，还会进行百万瓦级太阳能的发电控制。但是，由于PCS会将通过PV模块产生的电力限制在额定容量以下，所以即使MSC实施上述电力限制控制，也无法充分运用PV系统的发电能力。Generally, in a solar power generation (PV'photovoltaic, photovoltaic) system, a PV module with a capacity greater than the rated capacity of a power conditioner (PCS, power conditioning system, power conditioning system) is provided. When the power generation of the PV module exceeds the rated capacity of the PCS, limit the output of the PCS to the rated capacity or less. On the other hand, in order to control a large-capacity PV system of several megawatts to tens of millions of watts called megawatt solar, a main site controller (MSC, main site controller) JSC is sometimes introduced in addition to megawatts. In addition to the centralized monitoring of multiple PCSs in the solar energy of the megawatt class, it also controls the power generation of the solar energy of the megawatt class. However, since the PCS limits the power generated by the PV modules to be less than the rated capacity, even if the MSC implements the above-described power limit control, the power generation capacity of the PV system cannot be fully utilized.
太阳能作为新能源的使用非常有意义，传统新能源在使用过程中，都经过多重转换，最终以交流形式应用于终端目标电器中，不仅带来转换的效率问题，繁多的转换设备带来诸多空间，费用问题诸多。The use of solar energy as a new energy source is very meaningful. In the process of using traditional new energy sources, they undergo multiple conversions and are finally applied to the terminal target electrical appliances in the form of AC, which not only brings about the problem of conversion efficiency, but also brings a lot of space for various conversion equipment. , there are many cost issues.
发明内容SUMMARY OF THE INVENTION
针对现有技术的不足，本发明公开了一种直供混网式太阳能混合供电方法，用于解决现有的直供混输式由于工艺复杂、全面的自动控制很难实现的问题；Aiming at the deficiencies of the prior art, the present invention discloses a direct-supply hybrid-grid solar hybrid power supply method, which is used to solve the problem that the existing direct-supply and hybrid-transmission type is difficult to realize due to complex processes and comprehensive automatic control;
本发明通过以下技术方案予以实现：The present invention is achieved through the following technical solutions:
本发明公开了一种直供混网式太阳能混合供电方法，包括以下步骤：The invention discloses a direct-supply hybrid-grid solar hybrid power supply method, comprising the following steps:
Step1：将多片太阳能板串联方式进行组网连接，进行太阳板数量的学习与记忆；Step1: Connect multiple solar panels in series to form a network to learn and memorize the number of solar panels;
Step2：测试并记录被测太阳能电池组件的初始数据；Step2: Test and record the initial data of the solar cell module under test;
Step3：储存不同纬度不同时刻的太阳照射角度并进行实时记录；Step3: Store the sun irradiation angles at different latitudes and different moments and record them in real time;
Step4：当检测到太阳能内部某一干扰信号导致供电内网压力值变化时，压力测量仪表实时检测并把信号传至控制核心；Step4: When it is detected that a certain interference signal inside the solar energy causes the pressure value of the power supply network to change, the pressure measuring instrument detects in real time and transmits the signal to the control core;
Step5：比较干扰信号与给定信号，根据比较结果调整变频器工作状态；Step5: Compare the interference signal and the given signal, and adjust the working state of the inverter according to the comparison result;
Step6：对每个供电站选定模糊控制周期T，根据标准供电曲线确定供电给定值；Step6: Select the fuzzy control period T for each power supply station, and determine the power supply given value according to the standard power supply curve;
Step7：根据模块程序偏差值计算供电输出的隶属补偿，切换供电模式；Step7: Calculate the membership compensation of the power supply output according to the deviation value of the module program, and switch the power supply mode;
Step8：调节信号控制调节阀，输出太阳能供电流量。Step8: Adjust the signal to control the regulating valve and output the solar power supply flow.
更进一步地，所述步骤Step5的判断结果为干扰信号强于给定信号时，包括以下步骤：Further, when the judgment result of the step Step5 is that the interference signal is stronger than the given signal, the following steps are included:
Step501：依据所述供电内网运算输出一个负值，叠加在原来的干扰信号上,致使控制核心输出减少，所述变频器接收到减少的信号后使供电回路频率减少；Step501: output a negative value according to the power supply internal network operation, superimpose it on the original interference signal, so that the output of the control core is reduced, and the frequency converter reduces the frequency of the power supply circuit after receiving the reduced signal;
Step502：随之电机的转数下降,电机的输出压力降低，并使得测量点处的压力相应降低。Step502: With the decrease of the rotation number of the motor, the output pressure of the motor decreases, and the pressure at the measurement point decreases accordingly.
更进一步地，所述步骤Step5的判断结果为干扰信号弱于给定信号时，包括以下步骤：Further, when the judgment result of the step Step5 is that the interference signal is weaker than the given signal, the following steps are included:
Step503：依据所述供电内网运算输出一个正值，叠加在原来的干扰信号上,致使控制核心输出增加，所述变频器接收到增加的信号后使供电回路频率增加；Step 503: output a positive value according to the power supply intranet operation, superimpose it on the original interference signal, so that the output of the control core increases, and the frequency converter increases the frequency of the power supply circuit after receiving the increased signal;
Step504：随之电机的转数下降,电机的输出压力降低，并使得测量点处的压力相应升高。Step504: With the decrease of the rotation number of the motor, the output pressure of the motor decreases, and the pressure at the measurement point increases accordingly.
更进一步地，所述步骤step5中，重复上述过程满足所述给定信号与所述干扰信号相同，则反馈到所述控制核心进行调节，直至达到新的平衡。Further, in the step 5, if the above process is repeated to satisfy that the given signal is the same as the interference signal, it is fed back to the control core for adjustment until a new balance is reached.
更进一步地，所述步骤Step6中，所述隶属补偿偏差与输出的隶属步长越小,反之则隶属步长越大；所述隶属步长控制调节阀调节系数；所述调节系数选用等百分比特性和线性特性。Further, in the step Step6, the smaller the membership step size of the membership compensation deviation and the output, the larger the membership step size is; the membership step length controls the adjustment valve adjustment coefficient; the adjustment coefficient is selected as equal percentage. characteristics and linear characteristics.
更进一步地，所述步骤Step6中，所述标准供电曲线为所述控制核心中电力控制的给定值；所述给定值由所述供电内网定值调节，将供电曲线对应编程并实时修正供电曲线更新所述标准供电曲线。Further, in the step Step6, the standard power supply curve is the given value of the power control in the control core; the given value is adjusted by the fixed value of the power supply network, and the power supply curve is correspondingly programmed and real-time. The modified power supply curve updates the standard power supply curve.
更进一步地，所述标准供电曲线针对所述供电内网每个供电站所带太阳能的具体情况确定；所述具体情况包括太阳能结构、年限和散热方式。Further, the standard power supply curve is determined according to the specific conditions of the solar energy carried by each power supply station of the power supply intranet; the specific conditions include the solar energy structure, age and heat dissipation method.
更进一步地，当所述干扰信号使供电温度升高时，通过温度测量环节传递到所述控制核心，所述控制核心比较后一定输出工作负荷降低值叠加在原有的信号上，通过关阀使所述供电温度朝降低方向发展；循环直至实测温度与所述干扰信号调整合格并处于平衡状态。Further, when the interference signal increases the power supply temperature, it is transmitted to the control core through the temperature measurement link. After the comparison, the control core outputs a certain workload reduction value and superimposes it on the original signal. The power supply temperature develops in a decreasing direction; the cycle is repeated until the measured temperature and the interference signal are adjusted and are in a balanced state.
更进一步地，所述控制核心分别控制温度控制系统与压力控制系统，所述温度控制系统与压力控制系统均可输出所述干扰信号，所述干扰信号基于所述温度控制系统与所述压力控制系统相互作用下建立供电平衡。Further, the control core controls the temperature control system and the pressure control system respectively, and both the temperature control system and the pressure control system can output the interference signal, and the interference signal is based on the temperature control system and the pressure control system. The power supply balance is established under the interaction of the system.
更进一步地，所述步骤Step8下级为了防止调节阀机械故障,所述控制核心设定所述干扰信号输出上限和输出下限，当超出预设范围时，确认出现供电故障，反馈至供电人员进行人工排障。Further, in order to prevent the mechanical failure of the regulating valve, the control core sets the upper limit and lower limit of the output of the interference signal. When the preset range is exceeded, it is confirmed that there is a power supply failure, and feedback is sent to the power supply personnel for manual operation. Troubleshoot.
本发明的有益效果为：The beneficial effects of the present invention are:
1、本发明采用直供混输系统，直接混网供电，供电效率高，损失小，一级网沿程供电损失小，可利用热源厂一级网供电压力向用户供电，减少动力输出，耗电少。本发明的工艺流程简单，操作步骤少，设备及设备种类少，建设投资少。1. The present invention adopts a direct-supply and mixed-transmission system, which directly mixes the grid to supply power, with high power supply efficiency, small loss, and small power loss along the primary grid. Low power. The technological process of the invention is simple, the operation steps are few, the equipment and equipment types are few, and the construction investment is low.
2、本发明使用变频技术、计算机技术、自控技术、网络技术的融合发展，提高供电泵站的控制策略，使得供电日臻完善，自动化水平不断提高。供电泵站的监控系统也在多数供电企业也建立并投入使用。一次投资少，运行费用低的直供混输供电系统发展较快。2. The present invention uses the integrated development of frequency conversion technology, computer technology, automatic control technology and network technology to improve the control strategy of the power supply pumping station, so that the power supply is improved day by day and the automation level is continuously improved. The monitoring system of the power supply pumping station has also been established and put into use in most power supply enterprises. The direct-supply and mixed-transmission power supply system with less one-time investment and low operating cost develops rapidly.
3、本发明是一种智能化、模块化、机械化的系统，太阳能温差发电装置属于固态能量转换过程，将直供混网技术与温差发电技术结合，使用清洁无污染太阳能作为热源，集热板中心位置能流密度分布最高且均匀，太阳能温差发电技术投资及使用费用较低。3. The present invention is an intelligent, modular, and mechanized system. The solar thermoelectric power generation device belongs to the solid-state energy conversion process. It combines the direct-supply mixed grid technology with the thermoelectric power generation technology, and uses clean and pollution-free solar energy as the heat source. The energy flow density distribution at the central location is the highest and uniform, and the investment and use costs of solar thermoelectric power generation technology are low.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.
图1是本发明一种直供混网式太阳能混合供电方法的流程示意图；1 is a schematic flowchart of a direct-supply hybrid-grid solar hybrid power supply method according to the present invention;
图2是本发明一种直供混网式太阳能混合供电方法的步骤4流程示意图。FIG. 2 is a schematic flowchart of step 4 of a direct-supply hybrid-grid solar hybrid power supply method according to the present invention.
具体实施方式Detailed ways
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
实施例1Example 1
本实施例提供一种直供混网式太阳能混合供电方法，请参阅图1，根据本发明实施例1的一种直供混网式太阳能混合供电方法，其步骤如下：This embodiment provides a direct-supply hybrid-grid solar hybrid power supply method. Please refer to FIG. 1 . According to a direct-supply hybrid-grid solar hybrid power supply method according to Embodiment 1 of the present invention, the steps are as follows:
Step1：将多片太阳能板串联方式进行组网连接，进行太阳板数量的学习与记忆；Step1: Connect multiple solar panels in series to form a network to learn and memorize the number of solar panels;
Step2：测试并记录被测太阳能电池组件的初始数据；Step2: Test and record the initial data of the solar cell module under test;
Step3：储存不同纬度不同时刻的太阳照射角度并进行实时记录；Step3: Store the sun irradiation angles at different latitudes and different moments and record them in real time;
Step4：当检测到太阳能内部某一干扰信号导致供电内网压力值变化时，压力测量仪表实时检测并把信号传至控制核心；Step4: When it is detected that a certain interference signal inside the solar energy causes the pressure value of the power supply network to change, the pressure measuring instrument detects in real time and transmits the signal to the control core;
Step5：比较干扰信号与给定信号，根据比较结果调整变频器工作状态；Step5: Compare the interference signal and the given signal, and adjust the working state of the inverter according to the comparison result;
Step6：对每个供电站选定模糊控制周期T，根据标准供电曲线确定供电给定值；Step6: Select the fuzzy control period T for each power supply station, and determine the power supply given value according to the standard power supply curve;
Step7：根据模块程序偏差值计算供电输出的隶属补偿，切换供电模式；Step7: Calculate the membership compensation of the power supply output according to the deviation value of the module program, and switch the power supply mode;
Step8：调节信号控制调节阀，输出太阳能供电流量。Step8: Adjust the signal to control the regulating valve and output the solar power supply flow.
本发明根据具体情况采取不同的控制策略，使直供混输系统自动化水平成熟与完善。所述步骤Step8下级为了防止调节阀机械故障,所述控制核心设定所述干扰信号输出上限和输出下限，当超出预设范围时，确认出现供电故障，反馈至供电人员进行人工排障。The invention adopts different control strategies according to specific conditions, so that the automation level of the direct supply and mixed transportation system is mature and perfect. In order to prevent the mechanical failure of the regulating valve, the lower level of Step 8 sets the upper limit and lower limit of the output of the interference signal. When it exceeds the preset range, it is confirmed that there is a power supply failure, and it is fed back to the power supply personnel for manual troubleshooting.
实施例2Example 2
本实施例公开了实施例1的一种直供混网式太阳能混合供电方法外， 请参阅图1和图2，所述步骤Step5的判断结果为干扰信号强于给定信号时，包括以下步骤：This embodiment discloses a direct-supply hybrid-grid solar hybrid power supply method according to Embodiment 1. Please refer to FIG. 1 and FIG. 2. When the judgment result of Step 5 is that the interference signal is stronger than the given signal, the following steps are included. :
Step501：依据所述供电内网运算输出一个负值，叠加在原来的干扰信号上,致使控制核心输出减少，所述变频器接收到减少的信号后使供电回路频率减少；Step501: output a negative value according to the power supply internal network operation, superimpose it on the original interference signal, so that the output of the control core is reduced, and the frequency converter reduces the frequency of the power supply circuit after receiving the reduced signal;
Step502：随之电机的转数下降,电机的输出压力降低，并使得测量点处的压力相应降低。Step502: With the decrease of the rotation number of the motor, the output pressure of the motor decreases, and the pressure at the measurement point decreases accordingly.
所述步骤Step5的判断结果为干扰信号弱于给定信号时，包括以下步骤：When the judgment result of the step Step5 is that the interference signal is weaker than the given signal, the following steps are included:
Step503：依据所述供电内网运算输出一个正值，叠加在原来的干扰信号上,致使控制核心输出增加，所述变频器接收到增加的信号后使供电回路频率增加；Step 503: output a positive value according to the power supply intranet operation, superimpose it on the original interference signal, so that the output of the control core increases, and the frequency converter increases the frequency of the power supply circuit after receiving the increased signal;
Step504：随之电机的转数下降,电机的输出压力降低，并使得测量点处的压力相应升高。Step504: With the decrease of the rotation number of the motor, the output pressure of the motor decreases, and the pressure at the measurement point increases accordingly.
所述步骤step4中，重复上述过程满足所述给定信号与所述干扰信号相同，则反馈到所述控制核心进行调节，直至达到新的平衡。In the step step4, if the above process is repeated to satisfy that the given signal is the same as the interference signal, it is fed back to the control core for adjustment until a new balance is reached.
实施例3Example 3
本实施例公开了实施例2的一种直供混网式太阳能混合供电方法外， 所述步骤Step6中，所述隶属补偿偏差与输出的隶属步长越小,反之则隶属步长越大；所述隶属步长控制调节阀调节系数；所述调节系数选用等百分比特性和线性特性。This embodiment discloses a direct-supply hybrid-grid solar hybrid power supply method of Embodiment 2, in the step Step 6, the smaller the membership step size of the membership compensation deviation and the output, the larger the membership step size is; The subordinate step length controls the adjustment coefficient of the regulating valve; the adjustment coefficient adopts equal percentage characteristic and linear characteristic.
所述步骤Step6中，所述标准供电曲线为所述控制核心中电力控制的给定值；所述给定值由所述供电内网定值调节，将供电曲线对应编程并实时修正供电曲线更新所述标准供电曲线。In the step Step6, the standard power supply curve is the given value of the power control in the control core; the given value is adjusted by the power supply intranet fixed value, the power supply curve is correspondingly programmed and the power supply curve is updated in real time. the standard power supply curve.
所述标准供电曲线针对所述供电内网每个供电站所带太阳能的具体情况确定；所述具体情况包括太阳能结构、年限和散热方式。The standard power supply curve is determined according to the specific conditions of the solar energy carried by each power supply station in the power supply intranet; the specific conditions include solar energy structure, age and heat dissipation method.
当所述干扰信号使供电温度升高时，通过温度测量环节传递到所述控制核心，所述控制核心比较后一定输出工作负荷降低值叠加在原有的信号上，通过关阀使所述供电温度朝降低方向发展；循环直至实测温度与所述干扰信号调整合格并处于平衡状态。When the interference signal increases the power supply temperature, it is transmitted to the control core through the temperature measurement link. After the control core compares, a certain output workload reduction value is superimposed on the original signal, and the power supply temperature is increased by closing the valve. Develop in a decreasing direction; cycle until the measured temperature and the interference signal are adjusted and in equilibrium.
所述控制核心分别控制温度控制系统与压力控制系统，所述温度控制系统与压力控制系统均可输出所述干扰信号，所述干扰信号基于所述温度控制系统与所述压力控制系统相互作用下建立供电平衡。The control core controls the temperature control system and the pressure control system respectively, and both the temperature control system and the pressure control system can output the interference signal, and the interference signal is based on the interaction between the temperature control system and the pressure control system. Establish power balance.
综上所述，本发明采用直供混输系统，直接混网供电，供电效率高，损失小，一级网沿程供电损失小，可利用热源厂一级网供电压力向用户供电，减少动力输出，耗电少。本发明的工艺流程简单，操作步骤少，设备及设备种类少，建设投资少。To sum up, the present invention adopts the direct supply and mixed transmission system, which directly mixes the grid to supply power, with high power supply efficiency, small loss, and small power loss along the primary grid. output, low power consumption. The technological process of the invention is simple, the operation steps are few, the equipment and equipment types are few, and the construction investment is low.
本发明使用变频技术、计算机技术、自控技术、网络技术的融合发展，提高供电泵站的控制策略，使得供电日臻完善，自动化水平不断提高。供电泵站的监控系统也在多数供电企业也建立并投入使用。一次投资少，运行费用低的直供混输供电系统发展较快。The invention uses the integrated development of frequency conversion technology, computer technology, automatic control technology and network technology to improve the control strategy of the power supply pumping station, so that the power supply is improved day by day and the automation level is continuously improved. The monitoring system of the power supply pumping station has also been established and put into use in most power supply enterprises. The direct-supply and mixed-transmission power supply system with less one-time investment and low operating cost develops rapidly.
本发明是一种智能化、模块化、机械化的系统，太阳能温差发电装置属于固态能量转换过程，将直供混网技术与温差发电技术结合，使用清洁无污染太阳能作为热源，集热板中心位置能流密度分布最高且均匀，太阳能温差发电技术投资及使用费用较低。The invention is an intelligent, modular, and mechanized system. The solar thermoelectric power generation device belongs to the solid-state energy conversion process. It combines the direct supply and mixed grid technology with the thermoelectric power generation technology, uses clean and pollution-free solar energy as the heat source, and the central position of the heat collector plate. The distribution of energy flow density is the highest and uniform, and the investment and use cost of solar thermoelectric power generation technology are low.
以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The recorded technical solutions are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
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