nodal energy price in hydrogen-blended integrated electricity and gas systems
王教授您好，
拜读了您多篇文献，对氢注入节点这样处理天然气成分，非常感兴趣。在您的《Carbon-Embedded Nodal Energy Price in
Hydrogen-Blended Integrated Electricity and Gas Systems With Heterogeneous Gas Compositions》这篇文献中有一些问题
1.凸凹近似处理weymouth 方程式子45的系数矩阵C不是负定矩阵，所以式子45可能不能保证是凹函数，因此有疑惑，具体是怎么处理呢。（并且我拜读了您的代码GEopf_alternativeGas_largeCase中也没有包含这个约束的子部分。）
2.您在文中求解过程中暂且将weymouth的方程气体常数视作常数，但是将其进行式子45进行处理时系数矩阵D是包含变量（组成成分x）与q的平方相乘依旧是一个多变量非线性项，你具体是如何处理的呢？
希望您可以在百忙之中看到我的问题，解惑后辈的疑问，最后祝您身体健康，学术长青。
期待您的回复！！
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