CN106208047B - A kind of power grid unit output method of adjustment considering energy-saving and emission-reduction benefit - Google Patents
A kind of power grid unit output method of adjustment considering energy-saving and emission-reduction benefit Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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Abstract
一种考虑节能减排效益的电网机组出力调整方法。其包括利用加权系数法对本地机组进行排序编号；设置电网分区的标识Iter＝0；令Iter＝Iter+1；判断标识Iter是否大于电网运行部门提供的电网分区数Itermax；将标识为Iter的电网分区内的所有机组构成一个集合；选取编号最大机组；利用潮流计算工具BPA计算电网潮流；判断Iter电网分区机组集合中编号最大的机组出力是否为0；选取Iter电网分区机组集合中编号最大的机组，设置该机组出力等于该机组目前出力加上该机组额定容量的百分之五等步骤；本发明能够有效降低本地机组排放，减少环境污染，为当前环保压力与日俱增的城市电网运行提供有益借鉴。
A power grid unit output adjustment method considering the benefits of energy saving and emission reduction. It includes utilizing the weighting coefficient method to sort and number the local units; setting the grid partition mark Iter=0; making Iter=Iter+1; judging whether the mark Iter is greater than the grid partition number Itermax provided by the power grid operation department; All units in the partition form a set; select the unit with the largest number; use the power flow calculation tool BPA to calculate the grid power flow; judge whether the output of the unit with the largest number in the unit set of the Iter grid division is 0; select the unit with the largest number in the unit set of the Iter grid division , setting the output of the unit equal to the current output of the unit plus 5% of the rated capacity of the unit; the invention can effectively reduce the emission of the local unit, reduce environmental pollution, and provide a useful reference for the current urban power grid operation with increasing environmental protection pressure.
Description
技术领域technical field
本发明属于电力系统调度运行技术领域，特别是涉及一种考虑节能减排效益的电网机组出力调整方法。The invention belongs to the technical field of power system dispatching operation, and in particular relates to a method for adjusting the output of power grid units considering the benefits of energy saving and emission reduction.
背景技术Background technique
近年来，我国一些城市地区的环境问题不断加剧，雾霾天气日益严重，迫切需要转变能源发展方式，调整能源生产结构。降低煤炭消费比重，大力发展清洁能源，优化电源结构和布局，提高城市受端电网外受电比例是治理雾霾的重要策略。另外，在制定本地机组出力策略时，也应充分考虑本地机组单位电量下的能源消耗量、排放情况等。因此，为有效缓解城市地区环境问题，首先应充分提高外来电力比例，其次降低本地机组排放。即应在保证城市电网安全稳定运行的前提下，充分考虑本地机组一次能源消耗、排放等情况，制定本地机组出力调整策略，使得在接受外来电力最大化的同时尽量降低本地机组排放，缓解城市环境和雾霾问题。然而，目前尚无一种通用的考虑节能减排效益的城市电网本地机组出力调整方法。In recent years, the environmental problems in some urban areas of our country have been intensified, and the smog weather has become increasingly serious. It is urgent to change the energy development mode and adjust the energy production structure. Reducing the proportion of coal consumption, vigorously developing clean energy, optimizing the structure and layout of power sources, and increasing the proportion of power received outside the power grid at the receiving end of the city are important strategies for controlling smog. In addition, when formulating the output strategy of local units, the energy consumption and emissions of the local units should also be fully considered. Therefore, in order to effectively alleviate environmental problems in urban areas, firstly, the proportion of external power should be fully increased, and secondly, the emission of local units should be reduced. That is, under the premise of ensuring the safe and stable operation of the urban power grid, the primary energy consumption and emissions of the local units should be fully considered, and the output adjustment strategy of the local units should be formulated to minimize the emissions of the local units while maximizing the acceptance of external power and alleviate the urban environment. and smog problems. However, there is currently no universal output adjustment method for local units in urban power grids that considers the benefits of energy conservation and emission reduction.
发明内容Contents of the invention
为了解决上述问题，本发明的目的在于提供一种考虑节能减排效益的电网机组出力调整方法。In order to solve the above problems, the object of the present invention is to provide a method for adjusting the output of power grid units considering the benefits of energy saving and emission reduction.
为了达到上述目的，本发明提供的考虑节能减排效益的电网机组出力调整方法包括按顺序执行的下列步骤：In order to achieve the above object, the power grid unit output adjustment method considering the benefits of energy saving and emission reduction provided by the present invention includes the following steps executed in sequence:
步骤1)根据某城市电网本地机组单位电量下的一次能源消耗量、碳排放量，利用加权系数法对本地机组进行排序编号；Step 1) According to the primary energy consumption and carbon emissions of the local units in a certain city power grid, the local units are sorted and numbered using the weighting coefficient method;
步骤2)设置电网分区的标识Iter＝0；Step 2) set the sign Iter=0 of the grid partition;
步骤3)令Iter＝Iter+1；Step 3) make Iter=Iter+1;
步骤4)判断标识Iter是否大于电网运行部门提供的电网分区数Itermax，若是，则进入步骤10)，本流程至此结束，否则进入步骤5)；其中电网运行部门提供的电网分区数Itermax的数值是由电网运行部门经计算分析电网短路水平确定；Step 4) judge whether the identification Iter is greater than the grid partition number Itermax provided by the power grid operation department, if so, then enter step 10), the flow process ends here, otherwise enter step 5); wherein the value of the grid partition number Itermax provided by the power grid operation department is Determined by the grid operation department through calculation and analysis of the grid short-circuit level;
步骤5)将标识为Iter的电网分区内的所有机组构成一个集合，称之为Iter电网分区机组集合，并设置Iter电网分区机组集合中的所有机组均满出力运行；Step 5) form a collection of all units identified as Iter in the grid partition, called Iter grid partition unit set, and set all units in the Iter grid partition unit set to run at full capacity;
步骤6)选取Iter电网分区机组集合中编号最大的机组，并设置该机组出力等于该机组目前出力减去该机组额定容量的百分之五；Step 6) Select the unit with the largest number in the Iter grid partition unit set, and set the output of the unit to be equal to the current output of the unit minus five percent of the rated capacity of the unit;
步骤7)利用潮流计算工具BPA计算电网潮流，以判断标识为Iter的电网分区是否满足“N-1”校验，若是，则进入步骤8)，否则进入步骤9)；Step 7) Utilize the power flow calculation tool BPA to calculate the grid power flow, to judge whether the grid partition identified as Iter satisfies the "N-1" check, if so, then enter step 8), otherwise enter step 9);
步骤8)判断Iter电网分区机组集合中编号最大的机组出力是否为0，若是，则将该机组从Iter电网分区机组集合中剔除，然后转入步骤6)，否则直接转入步骤6)；Step 8) judge whether the output of the unit with the largest number in the Iter grid partition unit set is 0, if so, then remove the unit from the Iter grid partition unit set, and then proceed to step 6), otherwise directly proceed to step 6);
步骤9)选取Iter电网分区机组集合中编号最大的机组，设置该机组出力等于该机组目前出力加上该机组额定容量的百分之五，然后转入步骤3)；Step 9) select the unit with the largest number in the Iter grid partition unit set, set the output of the unit to be equal to the current output of the unit plus five percent of the rated capacity of the unit, and then proceed to step 3);
步骤10)结束。Step 10) ends.
在步骤1)中，所述加权系数法指的是将机组单位电量下的一次能源消耗量、碳排放量权重均设置为0.5，并加权求和得到各机组的综合权重结果，根据综合权重结果，对各机组开始依次编号，综合权重结果越大的机组，编号越大，代表机组节能减排效益越差。In step 1), the weighting coefficient method refers to setting the weight of the primary energy consumption and carbon emissions under the unit electricity of the unit to 0.5, and weighting and summing to obtain the comprehensive weight result of each unit, according to the comprehensive weight result , start to number each unit sequentially, and the unit with a larger comprehensive weight result has a larger number, which means that the unit’s energy-saving and emission-reduction benefits are worse.
在步骤7)中，所述的满足“N-1”校验是指标识为Iter的电网分区内的任一发电机、线路或主变无故障断开时，能保持电网的稳定运行，且不致使其它元件超过规定的事故过负荷和电压允许偏差的要求。In step 7), when the "N-1" verification is satisfied, it means that any generator, line or main transformer in the grid partition identified as Iter can maintain the stable operation of the grid when it is disconnected without fault, and Do not cause other components to exceed the specified accident overload and voltage tolerance requirements.
本发明提供的考虑节能减排效益的电网机组出力调整方法的有益效果：Beneficial effects of the power grid unit output adjustment method considering the benefits of energy saving and emission reduction provided by the present invention:
与现有技术相比，本发明通过最大化的降低机组出力以获得最大的外来电力比例，同时在降低机组出力时充分考虑了机组节能减排效益，制定了可量化、易实施的机组出力调整策略。该机组出力调整策略能够有效降低本地机组排放，减少环境污染，为当前环保压力与日俱增的城市电网运行提供有益借鉴。Compared with the prior art, the present invention maximizes the reduction of unit output to obtain the largest proportion of external power, and at the same time fully considers the energy saving and emission reduction benefits of the unit when reducing the unit output, and formulates a quantifiable and easy-to-implement unit output adjustment Strategy. The unit output adjustment strategy can effectively reduce the emission of local units, reduce environmental pollution, and provide a useful reference for the current urban power grid operation with increasing environmental protection pressure.
附图说明Description of drawings
图1为本发明提供的考虑节能减排效益的电网机组出力调整方法的流程图。Fig. 1 is a flow chart of the method for adjusting the output of power grid units considering the benefits of energy saving and emission reduction provided by the present invention.
具体实施方式Detailed ways
下面结合附图和具体实施例对本发明提供的考虑节能减排效益的电网机组出力调整方法进行详细说明。The following describes in detail the method for adjusting the output of power grid units considering the benefits of energy saving and emission reduction provided by the present invention with reference to the accompanying drawings and specific embodiments.
如图1所示，本发明提供的考虑节能减排效益的电网机组出力调整方法包括按顺序执行的下列步骤：As shown in Figure 1, the power grid unit output adjustment method considering the benefits of energy saving and emission reduction provided by the present invention includes the following steps executed in sequence:
步骤1)根据某城市电网本地机组单位电量下的一次能源消耗量、碳排放量，利用加权系数法对本地机组进行排序编号；Step 1) According to the primary energy consumption and carbon emissions of the local units in a city power grid, the weighting coefficient method is used to sort and number the local units;
步骤2)设置电网分区的标识Iter＝0；Step 2) set the sign Iter=0 of the grid partition;
步骤3)令Iter＝Iter+1；Step 3) make Iter=Iter+1;
步骤4)判断标识Iter是否大于电网运行部门提供的电网分区数Itermax，若是，则进入步骤10)，本流程至此结束，否则进入步骤5)；其中电网运行部门提供的电网分区数Itermax的数值是由电网运行部门经计算分析电网短路水平确定；Step 4) judge whether the identification Iter is greater than the grid partition number Itermax provided by the power grid operation department, if so, then enter step 10), the flow process ends here, otherwise enter step 5); wherein the value of the grid partition number Itermax provided by the power grid operation department is Determined by the grid operation department through calculation and analysis of the grid short-circuit level;
步骤5)将标识为Iter的电网分区内的所有机组构成一个集合，称之为Iter电网分区机组集合，并设置Iter电网分区机组集合中的所有机组均满出力运行；Step 5) form a collection of all units identified as Iter in the grid partition, called Iter grid partition unit set, and set all units in the Iter grid partition unit set to run at full capacity;
步骤6)选取Iter电网分区机组集合中编号最大的机组，并设置该机组出力等于该机组目前出力减去该机组额定容量的百分之五；Step 6) Select the unit with the largest number in the Iter grid partition unit set, and set the output of the unit to be equal to the current output of the unit minus five percent of the rated capacity of the unit;
步骤7)利用潮流计算工具BPA计算电网潮流，以判断标识为Iter的电网分区是否满足“N-1”校验，若是，则进入步骤8)，否则进入步骤9)；Step 7) Utilize the power flow calculation tool BPA to calculate the grid power flow, to judge whether the grid partition identified as Iter satisfies the "N-1" check, if so, then enter step 8), otherwise enter step 9);
步骤8)判断Iter电网分区机组集合中编号最大的机组出力是否为0，若是，则将该机组从Iter电网分区机组集合中剔除，然后转入步骤6)，否则直接转入步骤6)；Step 8) judge whether the output of the unit with the largest number in the Iter grid partition unit set is 0, if so, then remove the unit from the Iter grid partition unit set, and then proceed to step 6), otherwise directly proceed to step 6);
步骤9)选取Iter电网分区机组集合中编号最大的机组，设置该机组出力等于该机组目前出力加上该机组额定容量的百分之五，然后转入步骤3)；Step 9) select the unit with the largest number in the Iter grid partition unit set, set the output of the unit to be equal to the current output of the unit plus five percent of the rated capacity of the unit, and then proceed to step 3);
步骤10)结束。Step 10) ends.
在步骤1)中，所述加权系数法指的是将机组单位电量下的一次能源消耗量、碳排放量权重均设置为0.5，并加权求和得到各机组的综合权重结果，根据综合权重结果，对各机组开始依次编号，综合权重结果越大的机组，编号越大，代表机组节能减排效益越差。In step 1), the weighting coefficient method refers to setting the weight of the primary energy consumption and carbon emissions under the unit electricity of the unit to 0.5, and weighting and summing to obtain the comprehensive weight result of each unit, according to the comprehensive weight result , start to number each unit sequentially, and the unit with a larger comprehensive weight result has a larger number, which means that the unit’s energy-saving and emission-reduction benefits are worse.
在步骤7)中，所述的满足“N-1”校验是指标识为Iter的电网分区内的任一发电机、线路或主变无故障断开时，能保持电网的稳定运行，且不致使其它元件超过规定的事故过负荷和电压允许偏差的要求。In step 7), when the "N-1" verification is satisfied, it means that any generator, line or main transformer in the grid partition identified as Iter can maintain the stable operation of the grid when it is disconnected without fault, and Do not cause other components to exceed the specified accident overload and voltage tolerance requirements.
本发明在保证电网安全稳定运行的前提下，一方面最大化的接纳外来电力，一方面充分考虑城市电网本地机组单位电量下的能源消耗量、排放情况等，降低本地机组排放，制定了一种考虑节能减排效益的城市电网本地机组出力调整策略。该发明制定的机组出力调整策略，有利于缓解城市地区环境日益加剧和雾霾天气问题，为城市电网机组运行提供有益借鉴。On the premise of ensuring the safe and stable operation of the power grid, the present invention, on the one hand, maximizes the acceptance of external power, on the other hand, fully considers the energy consumption and emission of the local unit of the urban power grid, and reduces the emission of the local unit, and formulates a The output adjustment strategy of local units in urban power grid considering the benefits of energy saving and emission reduction. The unit output adjustment strategy formulated by the invention is conducive to alleviating the increasingly aggravated environment and haze weather problems in urban areas, and provides a useful reference for the operation of urban power grid units.
本领域的技术人员容易理解，以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。It is easy for those skilled in the art to understand that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, All should be included within the protection scope of the present invention.
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| CN102930351A (en) * | 2012-10-26 | 2013-02-13 | 安徽省电力公司 | Comprehensive energy-conservation optimal operation daily plan generation method |
| CN104484543A (en) * | 2014-07-10 | 2015-04-01 | 国家电网公司 | Unit comprehensive operation evaluation method taking energy saving and emission reduction and just, fair and open scheduling into consideration |
| CN105528466A (en) * | 2014-09-28 | 2016-04-27 | 国家电网公司 | Wind power optimal planning modeling method considering adaptability and economy of power system |
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| CN102930351A (en) * | 2012-10-26 | 2013-02-13 | 安徽省电力公司 | Comprehensive energy-conservation optimal operation daily plan generation method |
| CN104484543A (en) * | 2014-07-10 | 2015-04-01 | 国家电网公司 | Unit comprehensive operation evaluation method taking energy saving and emission reduction and just, fair and open scheduling into consideration |
| CN105528466A (en) * | 2014-09-28 | 2016-04-27 | 国家电网公司 | Wind power optimal planning modeling method considering adaptability and economy of power system |
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