## 4 Results
### Comprehensive Simulation Analysis  
Based on the above research results, a comprehensive simulation analysis is conducted to consider the impact of jointly adjusting the TGC quota ratio and carbon emission cap target on the sustainable development of the electricity market. When the TGC quota ratio increases by 10% or 30% and the carbon emission cap target decreases by 10% or 30%, it has a positive impact on the sustainable development of the electricity market. Therefore, this study sets four scenario control schemes for comprehensive simulation, as shown in Table 4. The comprehensive simulation results are shown in Figure 8.  
The comprehensive simulation design has a significant impact on TGC price, which can quickly increase TGC price. The order of effects is Scenario 4 \(>\) Scenario 3 \(>\) Scenario 2 \(>\) Scenario 1 \(>\) Initial value. In the early stage, Scenario 2 had a more significant impact on increasing TGC prices. In contrast, in the later stage, Scenario 3 had a more pronounced promotion effect on TGC, far exceeding the impact of Scenario 2. When the level of renewable energy generation is low, the TGC price is more significantly affected by the carbon emission cap target. When renewable energy generation reaches a particular scale, the TGC price is more considerably affected by the TGC quota ratio. Due to the small impact of the TGC quota ratio on the CET price, in the comprehensive simulation, the CET price is still mainly affected by changes in the carbon emission cap target. The simulation results are basically consistent with Figure 8b. The electricity sale price shows irregular fluctuations due to the influence of the comprehensive simulation scenario settings. It is mainly affected by Scenario 1 and Scenario 3 in the early stage, which show a relatively \begin{table}
\begin{tabular}{c c c c c} \hline
**Scenario** & **Scenario 1** & **Scenario 2** & **Scenario 3** & **Scenario 4** \\ \hline TGC quota ratio & +10\% & +10\% & +30\% & +30\% \\ Carbon emission cap target & \(-\)10\% & \(-\)30\% & \(-\)10\% & \(-\)30\% \\ \hline \end{tabular}
\end{table} 
Table 4: The setting of a comprehensive simulation scheme. Figure 7: Sensitivity simulation results analysis diagrams. (**a**) Simulation results of TGC price under the influence of TGC quota ratio, (**b**) Simulation results of TGC price under the influence of carbon emission cap target, (**c**) Simulation results of CET price under the influence of TGC quota ratio, (**d**) Simulation results of CET price under the influence of carbon emission cap target, (**e**) Simulation results of electricity sale price under the influence of TGC quota ratio, (**f**) Simulation results of electricity sale price under the influence of carbon emission cap target, (**g**) Simulation results of carbon emissions under the influence of TGC quota ratio, (**h**) Simulation results of carbon emissions under the influence of carbon emission cap target, (**i**) Simulation results of new installed capacity of fossil fuel power generation under the influence of TGC quota ratio, (**j**) Simulation results of new installed capacity of installed capacity of fossil fuel power generation under the influence of carbon emission cap target, (**k**) Simulation results of new installed capacity of renewable energy power generation under the influence of TGC quota ratio, (**l**) Simulation results of new installed capacity of renewable energy power generation under the influence of carbon emission cap target. significant price reduction. With the development of renewable energy and the reduction of electricity production costs, all four scenarios have promoted a sustained decrease in the electricity sale price, ultimately maintaining it at around 0.3 yuan/KWh. The comprehensive simulation design significantly affects carbon emissions, with the order of impact being Scenario 4 > Scenario 2 > Scenario 3 > Scenario 1 > Initial value.