Scenario-based stability analysis and check of new energy generation planning in sending power grid
A large amount of new energy generation connected to the grid changes the stability problem of the power transmission system.New types of stability problems and new mechanisms appear,which fundamentally affect the feasibility of the planning scheme.However,only the transient stability simulation for the large power grid is em-ployed to check the power supply planning schemes because the traditional transient stability simulation is not appli-cable to the new stability forms.Due to the enormous workload and high complexity,the electromagnetic transient simulation is unsuitable for checking new energy generation planning schemes for actual power systems.Thus,based on a review of the new stability problems of the power grid containing a high proportion of new energy genera-tion,this paper summarizes three scenarios where new stability problems emerge in the new energy planning schemes.Then the mechanism of the stability problems restricting the new energy sending and transmission is ana-lyzed.Furthermore,quantitative risk assessment methods are proposed indicators for assessing stability risk that are more efficient and feasible than existing assessment methods.Finally,the simulation verifies the existence of three types of new stability risks,and also verifies that the methods proposed in this paper can quickly and effectively as-sess the stability risks.
new energy planningtransient stability in bundled generation scenariosub-synchronous resonance/oscillationbroadband oscillationstability check
万方数据
维普
