CAJ | 학술논문

大电网发展的耦合化、容性化，使得电力系统无功电压调控的难度越来越大，具体表现为省地电网间的调控失配问题。考虑分级调度机制的影响，对调控失配问题进行机理分析，得到调控目标、调控需求与调控能力之间的配合特性，提出三维分析方法，从空间、时间与目标3个维度上剖析省地调控配合的关系，得到调控失配问题的解决思路与方向。结合AVC/VQC控制的特点，在就地校正控制中引入变压器高压侧电压判据，兼顾上下层调控的需求，优化调控效果。实例分析验证了解决思路与解决策略的合理性与有效性。
대전망발전적우합화、용성화，사득전력계통무공전압조공적난도월래월대，구체표현위성지전망간적조공실배문제。고필분급조도궤제적영향，대조공실배문제진행궤리분석，득도조공목표、조공수구여조공능력지간적배합특성，제출삼유분석방법，종공간、시간여목표3개유도상부석성지조공배합적관계，득도조공실배문제적해결사로여방향。결합AVC/VQC공제적특점，재취지교정공제중인입변압기고압측전압판거，겸고상하층조공적수구，우화조공효과。실례분석험증료해결사로여해결책략적합이성여유효성。
The close-coupled and high-capacitive characters of large-scale power grid are concomitant with its development, it make the reactive power and voltage control more difficult, and as a result the mismatching between voltage control in provincial power grid and that in regional power network appears. Considering the influence of hierarchical scheduling mechanism, the voltage control mismatching is analyzed to obtain the coordination characteristics among control objective, control demand and control capability. A three-dimensional analysis method is proposed to dissect the coordination relation between the voltage control of provincial power grid and that of regional power network in three dimensionalities of space, time and objective and to attain the thinking for the solution of the control mismatching. Combining with the features of AVC/VQC control, a voltage criterion at the 220kV side of transformers in the substations is led into the local corrective control to consider the demands from voltage control in power grid and that in power network to optimize the result of voltage control. The effectiveness and reasonableness of the thinking and strategy to solve this problem are verified by case study.