establishment of a corporate governance mechanism 
with  statutory  powers  and  responsibilities, 
transparent  powers and  responsibilities,  coordinated 
operation, and efficient checks and balances." 
3.2  The Group Management and 
Control System 
Firstly, the essence of group management and control 
is  a  set  of  management  methods  and  institutional 
arrangements  established  by  the  enterprise  group 
based on the property connection between parent and 
subsidiary companies. By implementing management 
control and resource coordination and allocation for 
subordinate enterprises or departments, resources can 
be effectively deployed in a wider range to achieve 
efficient  utilization  and  strategic  coordination.  The 
group control mode determines the allocation of core 
resources such as people and property. 
Secondly,  the  group  management  and  control 
system is the key to efficient operation of enterprise 
group.  Influenced  by  enterprise  attributes  and 
resource  endowments,  the  management  and  control 
mode  selection,  organizational  structure  and 
responsibility design of the enterprise group need to 
comprehensively  consider  the  positioning  of  the 
group  headquarters  and  the  governance  and 
management  capabilities  of  its  subsidiaries. 
Generally,  it  can  be  divided  into  indirect  control 
relationship  and  direct  control  relationship.  The 
indirect control relationship refers to that the parent 
company  mainly controls  the operating  activities of 
the subsidiary through the board of directors of  the 
subsidiary, and the control of the parent company is 
only reflected at the level of the board of directors. 
Direct control refers to that the members of the board 
of  directors  of  the  subsidiary  are  all  executive 
directors  from  the  parent  company,  and  the  parent 
company's board of directors directly nominates the 
senior  management  of  the  subsidiary,  which  can 
directly affect the operation and management of the 
subsidiary. 
3.3  The Operation Management 
System 
Firstly,  in  a  narrow  sense,  enterprise  operation 
management  refers  to  the  general  term  for  the 
planning,  organization,  implementation  and  control 
of  business  activities  such  as  product  or  business 
supply,  research,  production  and  marketing.  It  is  a 
command and coordination management system that 
runs  through  all  systems  of  enterprise  business 
creation.  In  a  broad  sense,  enterprise  operation 
management is a management activity that focuses on 
the  whole  process  of  enterprise  business  value 
creation, takes the enterprise business value chain as 
the  center,  strategic  planning  as  the  starting  point, 
planning management as the leader, and performance 
incentive  as  the  core,  systematically  drives  the 
management  of  all  links  and  functions  of  the 
enterprise  value  chain,  and  ensures  the  coordinated 
operation of all kinds of resources and functions, so 
as  to  maximize  the  operating  efficiency  of  the 
enterprise and continuously improve the working 
efficiency.  The  overall  enterprise  operation 
management  system  can  include  strategic 
management,  business  management,  functional 
management, digital management, corporate  culture 
management, etc. 
Secondly,  the  operation  management  system  is 
relatively  independent,  but  it  is  directly  affected  by 
the  group's  control  system  and  business  attributes. 
Under  diverse  corporate  governance  systems  and 
group  management  and  control  systems,  there  are 
significant  differences  in  the  vertical  design  and 
functional  soundness  of  the  operation  management 
system.  Generally,  for  subsidiaries  with  mature 
products,  complete  systems,  efficient  management 
and single shareholder, more emphasis is placed on 
centralized, institutionalized and standardized group 
management and control mode. For subsidiaries with 
more  product  innovation,  low  management 
standardization  and  multiple  shareholders,  more 
authorization  and  on-site  decision-making  authority 
are  required.  The  parent  company  participates  in 
corporate governance as a shareholder. 
On  the  basis  of  Mintzberg's  prototype  of 
enterprise  organizational  structure  and  Porter's 
concept  of  enterprise  value  chain  activities , this 
research explores and  constructs the basic model of 
modern governance system of power grid enterprises, 
as Table 1 presents: